ha_ndbcluster.cc 133 KB
Newer Older
unknown's avatar
unknown committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
/* Copyright (C) 2000-2003 MySQL AB

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
*/

/*
  This file defines the NDB Cluster handler: the interface between MySQL and
  NDB Cluster
*/

#ifdef __GNUC__
#pragma implementation                          // gcc: Class implementation
#endif

#include "mysql_priv.h"

#ifdef HAVE_NDBCLUSTER_DB
#include <my_dir.h>
#include "ha_ndbcluster.h"
#include <ndbapi/NdbApi.hpp>
#include <ndbapi/NdbScanFilter.hpp>

// Default value for parallelism
36
static const int parallelism= 0;
unknown's avatar
unknown committed
37

38 39
// Default value for max number of transactions
// createable against NDB from this handler
40 41
static const int max_transactions= 256;

42
// connectstring to cluster if given by mysqld
unknown's avatar
unknown committed
43
const char *ndbcluster_connectstring= 0;
44

45 46
static const char *ha_ndb_ext=".ndb";

unknown's avatar
unknown committed
47
#define NDB_HIDDEN_PRIMARY_KEY_LENGTH 8
48

unknown's avatar
unknown committed
49 50

#define ERR_PRINT(err) \
51
  DBUG_PRINT("error", ("%d  message: %s", err.code, err.message))
unknown's avatar
unknown committed
52 53 54

#define ERR_RETURN(err)		         \
{				         \
55 56 57
  const NdbError& tmp= err;              \
  ERR_PRINT(tmp);		         \
  DBUG_RETURN(ndb_to_mysql_error(&tmp)); \
unknown's avatar
unknown committed
58 59 60 61
}

// Typedefs for long names
typedef NdbDictionary::Column NDBCOL;
unknown's avatar
unknown committed
62
typedef NdbDictionary::Table NDBTAB;
unknown's avatar
unknown committed
63 64 65
typedef NdbDictionary::Index  NDBINDEX;
typedef NdbDictionary::Dictionary  NDBDICT;

unknown's avatar
unknown committed
66
bool ndbcluster_inited= FALSE;
unknown's avatar
unknown committed
67

68
static Ndb* g_ndb= NULL;
69
static Ndb_cluster_connection* g_ndb_cluster_connection= NULL;
70

unknown's avatar
unknown committed
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
// Handler synchronization
pthread_mutex_t ndbcluster_mutex;

// Table lock handling
static HASH ndbcluster_open_tables;

static byte *ndbcluster_get_key(NDB_SHARE *share,uint *length,
                                my_bool not_used __attribute__((unused)));
static NDB_SHARE *get_share(const char *table_name);
static void free_share(NDB_SHARE *share);

static int packfrm(const void *data, uint len, const void **pack_data, uint *pack_len);
static int unpackfrm(const void **data, uint *len,
		     const void* pack_data);

unknown's avatar
unknown committed
86
static int ndb_get_table_statistics(Ndb*, const char *, 
87 88
				    Uint64* rows, Uint64* commits);

unknown's avatar
unknown committed
89

90 91 92 93
/*
  Dummy buffer to read zero pack_length fields
  which are mapped to 1 char
*/
unknown's avatar
unknown committed
94
static uint32 dummy_buf;
95

unknown's avatar
unknown committed
96 97 98 99 100 101 102 103
/*
  Error handling functions
*/

struct err_code_mapping
{
  int ndb_err;
  int my_err;
104
  int show_warning;
unknown's avatar
unknown committed
105 106 107 108
};

static const err_code_mapping err_map[]= 
{
109 110
  { 626, HA_ERR_KEY_NOT_FOUND, 0 },
  { 630, HA_ERR_FOUND_DUPP_KEY, 0 },
unknown's avatar
unknown committed
111
  { 893, HA_ERR_FOUND_DUPP_KEY, 0 },
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
  { 721, HA_ERR_TABLE_EXIST, 1 },
  { 4244, HA_ERR_TABLE_EXIST, 1 },

  { 709, HA_ERR_NO_SUCH_TABLE, 1 },
  { 284, HA_ERR_NO_SUCH_TABLE, 1 },

  { 266, HA_ERR_LOCK_WAIT_TIMEOUT, 1 },
  { 274, HA_ERR_LOCK_WAIT_TIMEOUT, 1 },
  { 296, HA_ERR_LOCK_WAIT_TIMEOUT, 1 },
  { 297, HA_ERR_LOCK_WAIT_TIMEOUT, 1 },
  { 237, HA_ERR_LOCK_WAIT_TIMEOUT, 1 },

  { 623, HA_ERR_RECORD_FILE_FULL, 1 },
  { 624, HA_ERR_RECORD_FILE_FULL, 1 },
  { 625, HA_ERR_RECORD_FILE_FULL, 1 },
  { 826, HA_ERR_RECORD_FILE_FULL, 1 },
  { 827, HA_ERR_RECORD_FILE_FULL, 1 },
  { 832, HA_ERR_RECORD_FILE_FULL, 1 },

  { 0, 1, 0 },

  { -1, -1, 1 }
unknown's avatar
unknown committed
134 135 136 137 138 139
};


static int ndb_to_mysql_error(const NdbError *err)
{
  uint i;
140 141
  for (i=0; err_map[i].ndb_err != err->code && err_map[i].my_err != -1; i++);
  if (err_map[i].show_warning)
unknown's avatar
unknown committed
142
  {
143 144 145 146
    // Push the NDB error message as warning
    push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_ERROR,
			ER_GET_ERRMSG, ER(ER_GET_ERRMSG),
			err->code, err->message, "NDB");
unknown's avatar
unknown committed
147
  }
148 149
  if (err_map[i].my_err == -1)
    return err->code;
unknown's avatar
unknown committed
150 151 152 153
  return err_map[i].my_err;
}


unknown's avatar
unknown committed
154 155 156 157 158

inline
int execute_no_commit(ha_ndbcluster *h, NdbConnection *trans)
{
  int m_batch_execute= 0;
unknown's avatar
unknown committed
159 160
#ifdef NOT_USED
  if (m_batch_execute)
unknown's avatar
unknown committed
161
    return 0;
unknown's avatar
unknown committed
162
#endif
163
  return trans->execute(NoCommit,AbortOnError,h->m_force_send);
unknown's avatar
unknown committed
164 165 166 167 168 169
}

inline
int execute_commit(ha_ndbcluster *h, NdbConnection *trans)
{
  int m_batch_execute= 0;
unknown's avatar
unknown committed
170 171
#ifdef NOT_USED
  if (m_batch_execute)
unknown's avatar
unknown committed
172
    return 0;
unknown's avatar
unknown committed
173
#endif
174 175 176 177 178 179 180 181 182 183 184 185
  return trans->execute(Commit,AbortOnError,h->m_force_send);
}

inline
int execute_commit(THD *thd, NdbConnection *trans)
{
  int m_batch_execute= 0;
#ifdef NOT_USED
  if (m_batch_execute)
    return 0;
#endif
  return trans->execute(Commit,AbortOnError,thd->variables.ndb_force_send);
unknown's avatar
unknown committed
186 187 188 189 190 191
}

inline
int execute_no_commit_ie(ha_ndbcluster *h, NdbConnection *trans)
{
  int m_batch_execute= 0;
unknown's avatar
unknown committed
192 193
#ifdef NOT_USED
  if (m_batch_execute)
unknown's avatar
unknown committed
194
    return 0;
unknown's avatar
unknown committed
195
#endif
unknown's avatar
merge  
unknown committed
196
  return trans->execute(NoCommit,AO_IgnoreError,h->m_force_send);
unknown's avatar
unknown committed
197 198
}

199 200 201 202 203 204
/*
  Place holder for ha_ndbcluster thread specific data
*/

Thd_ndb::Thd_ndb()
{
205
  ndb= new Ndb(g_ndb_cluster_connection, "");
206 207
  lock_count= 0;
  count= 0;
208
  error= 0;
209 210 211 212
}

Thd_ndb::~Thd_ndb()
{
213 214
  if (ndb)
    delete ndb;
215 216 217 218 219 220 221 222
}

/*
 * manage uncommitted insert/deletes during transactio to get records correct
 */

struct Ndb_table_local_info {
  int no_uncommitted_rows_count;
223
  ulong last_count;
224 225 226
  ha_rows records;
};

unknown's avatar
unknown committed
227 228 229 230 231 232 233 234 235 236
void ha_ndbcluster::set_rec_per_key()
{
  DBUG_ENTER("ha_ndbcluster::get_status_const");
  for (uint i=0 ; i < table->keys ; i++)
  {
    table->key_info[i].rec_per_key[table->key_info[i].key_parts-1]= 1;
  }
  DBUG_VOID_RETURN;
}

237 238
void ha_ndbcluster::records_update()
{
239 240
  if (m_ha_not_exact_count)
    return;
241 242 243 244 245
  DBUG_ENTER("ha_ndbcluster::records_update");
  struct Ndb_table_local_info *info= (struct Ndb_table_local_info *)m_table_info;
  DBUG_PRINT("info", ("id=%d, no_uncommitted_rows_count=%d",
		      ((const NDBTAB *)m_table)->getTableId(),
		      info->no_uncommitted_rows_count));
246
  //  if (info->records == ~(ha_rows)0)
247 248 249 250 251 252
  {
    Uint64 rows;
    if(ndb_get_table_statistics(m_ndb, m_tabname, &rows, 0) == 0){
      info->records= rows;
    }
  }
253 254 255 256 257
  {
    THD *thd= current_thd;
    if (((Thd_ndb*)(thd->transaction.thd_ndb))->error)
      info->no_uncommitted_rows_count= 0;
  }
258 259 260 261
  records= info->records+ info->no_uncommitted_rows_count;
  DBUG_VOID_RETURN;
}

262 263
void ha_ndbcluster::no_uncommitted_rows_execute_failure()
{
264 265
  if (m_ha_not_exact_count)
    return;
266
  DBUG_ENTER("ha_ndbcluster::no_uncommitted_rows_execute_failure");
267 268
  THD *thd= current_thd;
  ((Thd_ndb*)(thd->transaction.thd_ndb))->error= 1;
269 270 271
  DBUG_VOID_RETURN;
}

272 273
void ha_ndbcluster::no_uncommitted_rows_init(THD *thd)
{
274 275
  if (m_ha_not_exact_count)
    return;
276 277 278
  DBUG_ENTER("ha_ndbcluster::no_uncommitted_rows_init");
  struct Ndb_table_local_info *info= (struct Ndb_table_local_info *)m_table_info;
  Thd_ndb *thd_ndb= (Thd_ndb *)thd->transaction.thd_ndb;
279
  if (info->last_count != thd_ndb->count)
280
  {
281
    info->last_count= thd_ndb->count;
282 283 284 285 286 287 288 289 290 291 292
    info->no_uncommitted_rows_count= 0;
    info->records= ~(ha_rows)0;
    DBUG_PRINT("info", ("id=%d, no_uncommitted_rows_count=%d",
			((const NDBTAB *)m_table)->getTableId(),
			info->no_uncommitted_rows_count));
  }
  DBUG_VOID_RETURN;
}

void ha_ndbcluster::no_uncommitted_rows_update(int c)
{
293 294
  if (m_ha_not_exact_count)
    return;
295
  DBUG_ENTER("ha_ndbcluster::no_uncommitted_rows_update");
unknown's avatar
unknown committed
296 297
  struct Ndb_table_local_info *info=
    (struct Ndb_table_local_info *)m_table_info;
298 299 300 301 302 303 304 305 306
  info->no_uncommitted_rows_count+= c;
  DBUG_PRINT("info", ("id=%d, no_uncommitted_rows_count=%d",
		      ((const NDBTAB *)m_table)->getTableId(),
		      info->no_uncommitted_rows_count));
  DBUG_VOID_RETURN;
}

void ha_ndbcluster::no_uncommitted_rows_reset(THD *thd)
{
307 308
  if (m_ha_not_exact_count)
    return;
309 310
  DBUG_ENTER("ha_ndbcluster::no_uncommitted_rows_reset");
  ((Thd_ndb*)(thd->transaction.thd_ndb))->count++;
311
  ((Thd_ndb*)(thd->transaction.thd_ndb))->error= 0;
312 313 314
  DBUG_VOID_RETURN;
}

unknown's avatar
unknown committed
315 316 317 318 319 320 321 322
/*
  Take care of the error that occured in NDB
  
  RETURN
    0	No error
    #   The mapped error code
*/

323

unknown's avatar
unknown committed
324 325
int ha_ndbcluster::ndb_err(NdbConnection *trans)
{
326
  int res;
unknown's avatar
unknown committed
327 328 329 330 331 332 333 334 335 336
  const NdbError err= trans->getNdbError();
  DBUG_ENTER("ndb_err");
  
  ERR_PRINT(err);
  switch (err.classification) {
  case NdbError::SchemaError:
  {
    NDBDICT *dict= m_ndb->getDictionary();
    DBUG_PRINT("info", ("invalidateTable %s", m_tabname));
    dict->invalidateTable(m_tabname);
337
    table->version=0L;			/* Free when thread is ready */
unknown's avatar
unknown committed
338 339 340 341 342
    break;
  }
  default:
    break;
  }
343 344 345 346
  res= ndb_to_mysql_error(&err);
  DBUG_PRINT("info", ("transformed ndbcluster error %d to mysql error %d", 
		      err.code, res));
  if (res == HA_ERR_FOUND_DUPP_KEY)
347
    m_dupkey= table->primary_key;
348 349
  
  DBUG_RETURN(res);
unknown's avatar
unknown committed
350 351 352
}


353
/*
354
  Override the default get_error_message in order to add the 
355 356 357
  error message of NDB 
 */

358 359
bool ha_ndbcluster::get_error_message(int error, 
				      String *buf)
360
{
361
  DBUG_ENTER("ha_ndbcluster::get_error_message");
362
  DBUG_PRINT("enter", ("error: %d", error));
363

unknown's avatar
unknown committed
364
  Ndb *ndb= ((Thd_ndb*)current_thd->transaction.thd_ndb)->ndb;
365
  if (!ndb)
unknown's avatar
unknown committed
366
    DBUG_RETURN(FALSE);
367

368
  const NdbError err= ndb->getNdbError(error);
369 370 371 372
  bool temporary= err.status==NdbError::TemporaryError;
  buf->set(err.message, strlen(err.message), &my_charset_bin);
  DBUG_PRINT("exit", ("message: %s, temporary: %d", buf->ptr(), temporary));
  DBUG_RETURN(temporary);
373 374 375
}


unknown's avatar
unknown committed
376 377
/*
  Check if type is supported by NDB.
378 379
  TODO Use this once in open(), not in every operation

unknown's avatar
unknown committed
380 381 382 383 384
*/

static inline bool ndb_supported_type(enum_field_types type)
{
  switch (type) {
unknown's avatar
unknown committed
385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406
  case MYSQL_TYPE_DECIMAL:    
  case MYSQL_TYPE_TINY:        
  case MYSQL_TYPE_SHORT:
  case MYSQL_TYPE_LONG:
  case MYSQL_TYPE_INT24:       
  case MYSQL_TYPE_LONGLONG:
  case MYSQL_TYPE_FLOAT:
  case MYSQL_TYPE_DOUBLE:
  case MYSQL_TYPE_TIMESTAMP:
  case MYSQL_TYPE_DATETIME:    
  case MYSQL_TYPE_DATE:
  case MYSQL_TYPE_NEWDATE:
  case MYSQL_TYPE_TIME:        
  case MYSQL_TYPE_YEAR:        
  case MYSQL_TYPE_STRING:      
  case MYSQL_TYPE_VAR_STRING:
  case MYSQL_TYPE_TINY_BLOB:
  case MYSQL_TYPE_BLOB:    
  case MYSQL_TYPE_MEDIUM_BLOB:   
  case MYSQL_TYPE_LONG_BLOB:  
  case MYSQL_TYPE_ENUM:
  case MYSQL_TYPE_SET:         
unknown's avatar
unknown committed
407
    return TRUE;
unknown's avatar
unknown committed
408 409
  case MYSQL_TYPE_NULL:   
  case MYSQL_TYPE_GEOMETRY:
410
  case MYSQL_TYPE_VARCHAR:
unknown's avatar
unknown committed
411
    break;
unknown's avatar
unknown committed
412
  }
unknown's avatar
unknown committed
413
  return FALSE;
unknown's avatar
unknown committed
414 415 416
}


unknown's avatar
unknown committed
417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443
/*
  Instruct NDB to set the value of the hidden primary key
*/

bool ha_ndbcluster::set_hidden_key(NdbOperation *ndb_op,
				   uint fieldnr, const byte *field_ptr)
{
  DBUG_ENTER("set_hidden_key");
  DBUG_RETURN(ndb_op->equal(fieldnr, (char*)field_ptr,
			    NDB_HIDDEN_PRIMARY_KEY_LENGTH) != 0);
}


/*
  Instruct NDB to set the value of one primary key attribute
*/

int ha_ndbcluster::set_ndb_key(NdbOperation *ndb_op, Field *field,
                               uint fieldnr, const byte *field_ptr)
{
  uint32 pack_len= field->pack_length();
  DBUG_ENTER("set_ndb_key");
  DBUG_PRINT("enter", ("%d: %s, ndb_type: %u, len=%d", 
                       fieldnr, field->field_name, field->type(),
                       pack_len));
  DBUG_DUMP("key", (char*)field_ptr, pack_len);
  
unknown's avatar
unknown committed
444 445 446 447 448
  if (ndb_supported_type(field->type()))
  {
    if (! (field->flags & BLOB_FLAG))
      // Common implementation for most field types
      DBUG_RETURN(ndb_op->equal(fieldnr, (char*) field_ptr, pack_len) != 0);
unknown's avatar
unknown committed
449
  }
unknown's avatar
unknown committed
450 451 452
  // Unhandled field types
  DBUG_PRINT("error", ("Field type %d not supported", field->type()));
  DBUG_RETURN(2);
unknown's avatar
unknown committed
453 454 455 456 457 458 459 460
}


/*
 Instruct NDB to set the value of one attribute
*/

int ha_ndbcluster::set_ndb_value(NdbOperation *ndb_op, Field *field, 
461
                                 uint fieldnr, bool *set_blob_value)
unknown's avatar
unknown committed
462 463 464 465 466 467 468 469
{
  const byte* field_ptr= field->ptr;
  uint32 pack_len=  field->pack_length();
  DBUG_ENTER("set_ndb_value");
  DBUG_PRINT("enter", ("%d: %s, type: %u, len=%d, is_null=%s", 
                       fieldnr, field->field_name, field->type(), 
                       pack_len, field->is_null()?"Y":"N"));
  DBUG_DUMP("value", (char*) field_ptr, pack_len);
unknown's avatar
unknown committed
470 471

  if (ndb_supported_type(field->type()))
unknown's avatar
unknown committed
472
  {
473
    // ndb currently does not support size 0
unknown's avatar
unknown committed
474
    uint32 empty_field;
475 476
    if (pack_len == 0)
    {
unknown's avatar
unknown committed
477 478 479 480 481 482
      pack_len= sizeof(empty_field);
      field_ptr= (byte *)&empty_field;
      if (field->is_null())
	empty_field= 0;
      else
	empty_field= 1;
483
    }
unknown's avatar
unknown committed
484 485 486 487 488 489 490 491 492 493
    if (! (field->flags & BLOB_FLAG))
    {
      if (field->is_null())
        // Set value to NULL
        DBUG_RETURN((ndb_op->setValue(fieldnr, (char*)NULL, pack_len) != 0));
      // Common implementation for most field types
      DBUG_RETURN(ndb_op->setValue(fieldnr, (char*)field_ptr, pack_len) != 0);
    }

    // Blob type
494
    NdbBlob *ndb_blob= ndb_op->getBlobHandle(fieldnr);
unknown's avatar
unknown committed
495 496 497 498 499 500 501 502 503 504 505 506
    if (ndb_blob != NULL)
    {
      if (field->is_null())
        DBUG_RETURN(ndb_blob->setNull() != 0);

      Field_blob *field_blob= (Field_blob*)field;

      // Get length and pointer to data
      uint32 blob_len= field_blob->get_length(field_ptr);
      char* blob_ptr= NULL;
      field_blob->get_ptr(&blob_ptr);

507 508 509
      // Looks like NULL ptr signals length 0 blob
      if (blob_ptr == NULL) {
        DBUG_ASSERT(blob_len == 0);
510
        blob_ptr= (char*)"";
511
      }
unknown's avatar
unknown committed
512 513 514 515 516

      DBUG_PRINT("value", ("set blob ptr=%x len=%u",
                           (unsigned)blob_ptr, blob_len));
      DBUG_DUMP("value", (char*)blob_ptr, min(blob_len, 26));

517
      if (set_blob_value)
unknown's avatar
unknown committed
518
	*set_blob_value= TRUE;
unknown's avatar
unknown committed
519 520 521 522
      // No callback needed to write value
      DBUG_RETURN(ndb_blob->setValue(blob_ptr, blob_len) != 0);
    }
    DBUG_RETURN(1);
unknown's avatar
unknown committed
523
  }
unknown's avatar
unknown committed
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541
  // Unhandled field types
  DBUG_PRINT("error", ("Field type %d not supported", field->type()));
  DBUG_RETURN(2);
}


/*
  Callback to read all blob values.
  - not done in unpack_record because unpack_record is valid
    after execute(Commit) but reading blobs is not
  - may only generate read operations; they have to be executed
    somewhere before the data is available
  - due to single buffer for all blobs, we let the last blob
    process all blobs (last so that all are active)
  - null bit is still set in unpack_record
  - TODO allocate blob part aligned buffers
*/

unknown's avatar
unknown committed
542
NdbBlob::ActiveHook g_get_ndb_blobs_value;
unknown's avatar
unknown committed
543

unknown's avatar
unknown committed
544
int g_get_ndb_blobs_value(NdbBlob *ndb_blob, void *arg)
unknown's avatar
unknown committed
545
{
unknown's avatar
unknown committed
546
  DBUG_ENTER("g_get_ndb_blobs_value");
unknown's avatar
unknown committed
547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578
  if (ndb_blob->blobsNextBlob() != NULL)
    DBUG_RETURN(0);
  ha_ndbcluster *ha= (ha_ndbcluster *)arg;
  DBUG_RETURN(ha->get_ndb_blobs_value(ndb_blob));
}

int ha_ndbcluster::get_ndb_blobs_value(NdbBlob *last_ndb_blob)
{
  DBUG_ENTER("get_ndb_blobs_value");

  // Field has no field number so cannot use TABLE blob_field
  // Loop twice, first only counting total buffer size
  for (int loop= 0; loop <= 1; loop++)
  {
    uint32 offset= 0;
    for (uint i= 0; i < table->fields; i++)
    {
      Field *field= table->field[i];
      NdbValue value= m_value[i];
      if (value.ptr != NULL && (field->flags & BLOB_FLAG))
      {
        Field_blob *field_blob= (Field_blob *)field;
        NdbBlob *ndb_blob= value.blob;
        Uint64 blob_len= 0;
        if (ndb_blob->getLength(blob_len) != 0)
          DBUG_RETURN(-1);
        // Align to Uint64
        uint32 blob_size= blob_len;
        if (blob_size % 8 != 0)
          blob_size+= 8 - blob_size % 8;
        if (loop == 1)
        {
579
          char *buf= m_blobs_buffer + offset;
unknown's avatar
unknown committed
580 581 582 583 584 585 586 587 588 589 590
          uint32 len= 0xffffffff;  // Max uint32
          DBUG_PRINT("value", ("read blob ptr=%x len=%u",
                               (uint)buf, (uint)blob_len));
          if (ndb_blob->readData(buf, len) != 0)
            DBUG_RETURN(-1);
          DBUG_ASSERT(len == blob_len);
          field_blob->set_ptr(len, buf);
        }
        offset+= blob_size;
      }
    }
591
    if (loop == 0 && offset > m_blobs_buffer_size)
unknown's avatar
unknown committed
592
    {
593 594
      my_free(m_blobs_buffer, MYF(MY_ALLOW_ZERO_PTR));
      m_blobs_buffer_size= 0;
unknown's avatar
unknown committed
595
      DBUG_PRINT("value", ("allocate blobs buffer size %u", offset));
596 597
      m_blobs_buffer= my_malloc(offset, MYF(MY_WME));
      if (m_blobs_buffer == NULL)
unknown's avatar
unknown committed
598
        DBUG_RETURN(-1);
599
      m_blobs_buffer_size= offset;
unknown's avatar
unknown committed
600
    }
unknown's avatar
unknown committed
601
  }
unknown's avatar
unknown committed
602
  DBUG_RETURN(0);
unknown's avatar
unknown committed
603 604 605 606 607
}


/*
  Instruct NDB to fetch one field
unknown's avatar
unknown committed
608 609
  - data is read directly into buffer provided by field
    if field is NULL, data is read into memory provided by NDBAPI
unknown's avatar
unknown committed
610 611
*/

unknown's avatar
unknown committed
612
int ha_ndbcluster::get_ndb_value(NdbOperation *ndb_op, Field *field,
unknown's avatar
unknown committed
613
                                 uint fieldnr, byte* buf)
unknown's avatar
unknown committed
614 615
{
  DBUG_ENTER("get_ndb_value");
unknown's avatar
unknown committed
616 617 618 619 620
  DBUG_PRINT("enter", ("fieldnr: %d flags: %o", fieldnr,
                       (int)(field != NULL ? field->flags : 0)));

  if (field != NULL)
  {
unknown's avatar
unknown committed
621
    DBUG_ASSERT(buf);
unknown's avatar
unknown committed
622 623 624 625
    if (ndb_supported_type(field->type()))
    {
      DBUG_ASSERT(field->ptr != NULL);
      if (! (field->flags & BLOB_FLAG))
unknown's avatar
unknown committed
626
      {	
627 628 629 630
	byte *field_buf;
	if (field->pack_length() != 0)
	  field_buf= buf + (field->ptr - table->record[0]);
	else
unknown's avatar
unknown committed
631
	  field_buf= (byte *)&dummy_buf;
unknown's avatar
unknown committed
632 633
        m_value[fieldnr].rec= ndb_op->getValue(fieldnr, 
					       field_buf);
unknown's avatar
unknown committed
634 635 636 637 638 639 640 641 642 643
        DBUG_RETURN(m_value[fieldnr].rec == NULL);
      }

      // Blob type
      NdbBlob *ndb_blob= ndb_op->getBlobHandle(fieldnr);
      m_value[fieldnr].blob= ndb_blob;
      if (ndb_blob != NULL)
      {
        // Set callback
        void *arg= (void *)this;
unknown's avatar
unknown committed
644
        DBUG_RETURN(ndb_blob->setActiveHook(g_get_ndb_blobs_value, arg) != 0);
unknown's avatar
unknown committed
645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664
      }
      DBUG_RETURN(1);
    }
    // Unhandled field types
    DBUG_PRINT("error", ("Field type %d not supported", field->type()));
    DBUG_RETURN(2);
  }

  // Used for hidden key only
  m_value[fieldnr].rec= ndb_op->getValue(fieldnr, NULL);
  DBUG_RETURN(m_value[fieldnr].rec == NULL);
}


/*
  Check if any set or get of blob value in current query.
*/
bool ha_ndbcluster::uses_blob_value(bool all_fields)
{
  if (table->blob_fields == 0)
unknown's avatar
unknown committed
665
    return FALSE;
unknown's avatar
unknown committed
666
  if (all_fields)
unknown's avatar
unknown committed
667
    return TRUE;
unknown's avatar
unknown committed
668 669 670
  {
    uint no_fields= table->fields;
    int i;
unknown's avatar
unknown committed
671
    THD *thd= table->in_use;
unknown's avatar
unknown committed
672 673 674 675 676 677
    // They always put blobs at the end..
    for (i= no_fields - 1; i >= 0; i--)
    {
      Field *field= table->field[i];
      if (thd->query_id == field->query_id)
      {
unknown's avatar
unknown committed
678
        return TRUE;
unknown's avatar
unknown committed
679 680 681
      }
    }
  }
unknown's avatar
unknown committed
682
  return FALSE;
unknown's avatar
unknown committed
683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700
}


/*
  Get metadata for this table from NDB 

  IMPLEMENTATION
    - save the NdbDictionary::Table for easy access
    - check that frm-file on disk is equal to frm-file
      of table accessed in NDB
    - build a list of the indexes for the table
*/

int ha_ndbcluster::get_metadata(const char *path)
{
  NDBDICT *dict= m_ndb->getDictionary();
  const NDBTAB *tab;
  int error;
unknown's avatar
unknown committed
701
  bool invalidating_ndb_table= FALSE;
702

unknown's avatar
unknown committed
703 704 705
  DBUG_ENTER("get_metadata");
  DBUG_PRINT("enter", ("m_tabname: %s, path: %s", m_tabname, path));

706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
  do {
    const void *data, *pack_data;
    uint length, pack_length;

    if (!(tab= dict->getTable(m_tabname)))
      ERR_RETURN(dict->getNdbError());
    DBUG_PRINT("info", ("Table schema version: %d", tab->getObjectVersion()));
    /*
      Compare FrmData in NDB with frm file from disk.
    */
    error= 0;
    if (readfrm(path, &data, &length) ||
	packfrm(data, length, &pack_data, &pack_length))
    {
      my_free((char*)data, MYF(MY_ALLOW_ZERO_PTR));
      my_free((char*)pack_data, MYF(MY_ALLOW_ZERO_PTR));
      DBUG_RETURN(1);
    }
unknown's avatar
unknown committed
724
    
725 726 727 728 729 730 731
    if ((pack_length != tab->getFrmLength()) || 
	(memcmp(pack_data, tab->getFrmData(), pack_length)))
    {
      if (!invalidating_ndb_table)
      {
	DBUG_PRINT("info", ("Invalidating table"));
	dict->invalidateTable(m_tabname);
unknown's avatar
unknown committed
732
	invalidating_ndb_table= TRUE;
733 734 735 736 737 738 739 740 741
      }
      else
      {
	DBUG_PRINT("error", 
		   ("metadata, pack_length: %d getFrmLength: %d memcmp: %d", 
		    pack_length, tab->getFrmLength(),
		    memcmp(pack_data, tab->getFrmData(), pack_length)));      
	DBUG_DUMP("pack_data", (char*)pack_data, pack_length);
	DBUG_DUMP("frm", (char*)tab->getFrmData(), tab->getFrmLength());
unknown's avatar
unknown committed
742
	error= 3;
unknown's avatar
unknown committed
743
	invalidating_ndb_table= FALSE;
744 745 746 747
      }
    }
    else
    {
unknown's avatar
unknown committed
748
      invalidating_ndb_table= FALSE;
749 750 751 752 753
    }
    my_free((char*)data, MYF(0));
    my_free((char*)pack_data, MYF(0));
  } while (invalidating_ndb_table);

unknown's avatar
unknown committed
754 755 756
  if (error)
    DBUG_RETURN(error);

unknown's avatar
unknown committed
757 758
  m_table= NULL;
  m_table_info= NULL;
unknown's avatar
unknown committed
759
  
unknown's avatar
unknown committed
760
  DBUG_RETURN(build_index_list(table, ILBP_OPEN));  
761
}
unknown's avatar
unknown committed
762

unknown's avatar
unknown committed
763

unknown's avatar
unknown committed
764
int ha_ndbcluster::build_index_list(TABLE *tab, enum ILBP phase)
765
{
766
  uint i;
unknown's avatar
unknown committed
767
  int error= 0;
768 769
  const char *name, *index_name;
  char unique_index_name[FN_LEN];
770
  static const char* unique_suffix= "$unique";
unknown's avatar
unknown committed
771 772 773 774
  KEY* key_info= tab->key_info;
  const char **key_name= tab->keynames.type_names;
  NdbDictionary::Dictionary *dict= m_ndb->getDictionary();
  DBUG_ENTER("build_index_list");
775
  
unknown's avatar
unknown committed
776
  // Save information about all known indexes
unknown's avatar
unknown committed
777
  for (i= 0; i < tab->keys; i++, key_info++, key_name++)
778
  {
unknown's avatar
unknown committed
779
    index_name= *key_name;
780
    NDB_INDEX_TYPE idx_type= get_index_type_from_table(i);
781
    m_index[i].type= idx_type;
782
    if (idx_type == UNIQUE_ORDERED_INDEX || idx_type == UNIQUE_INDEX)
783
    {
784 785 786
      strxnmov(unique_index_name, FN_LEN, index_name, unique_suffix, NullS);
      DBUG_PRINT("info", ("Created unique index name \'%s\' for index %d",
			  unique_index_name, i));
787
    }
unknown's avatar
unknown committed
788 789 790
    // Create secondary indexes if in create phase
    if (phase == ILBP_CREATE)
    {
791 792
      DBUG_PRINT("info", ("Creating index %u: %s", i, index_name));      
      switch (idx_type){
unknown's avatar
unknown committed
793 794 795 796 797 798 799 800 801
	
      case PRIMARY_KEY_INDEX:
	// Do nothing, already created
	break;
      case PRIMARY_KEY_ORDERED_INDEX:
	error= create_ordered_index(index_name, key_info);
	break;
      case UNIQUE_ORDERED_INDEX:
	if (!(error= create_ordered_index(index_name, key_info)))
802
	  error= create_unique_index(unique_index_name, key_info);
unknown's avatar
unknown committed
803 804
	break;
      case UNIQUE_INDEX:
805 806
	if (!(error= check_index_fields_not_null(i)))
	  error= create_unique_index(unique_index_name, key_info);
unknown's avatar
unknown committed
807 808 809 810 811
	break;
      case ORDERED_INDEX:
	error= create_ordered_index(index_name, key_info);
	break;
      default:
unknown's avatar
unknown committed
812
	DBUG_ASSERT(FALSE);
unknown's avatar
unknown committed
813 814 815 816 817 818 819 820 821 822
	break;
      }
      if (error)
      {
	DBUG_PRINT("error", ("Failed to create index %u", i));
	drop_table();
	break;
      }
    }
    // Add handles to index objects
823
    if (idx_type != PRIMARY_KEY_INDEX && idx_type != UNIQUE_INDEX)
824
    {
825
      DBUG_PRINT("info", ("Get handle to index %s", index_name));
unknown's avatar
unknown committed
826
      const NDBINDEX *index= dict->getIndex(index_name, m_tabname);
827
      if (!index) DBUG_RETURN(1);
unknown's avatar
unknown committed
828
      m_index[i].index= (void *) index;
829
    }
830
    if (idx_type == UNIQUE_ORDERED_INDEX || idx_type == UNIQUE_INDEX)
831
    {
832 833
      DBUG_PRINT("info", ("Get handle to unique_index %s", unique_index_name));
      const NDBINDEX *index= dict->getIndex(unique_index_name, m_tabname);
834
      if (!index) DBUG_RETURN(1);
unknown's avatar
unknown committed
835
      m_index[i].unique_index= (void *) index;
836 837
    }      
  }
unknown's avatar
unknown committed
838 839
  
  DBUG_RETURN(error);
840 841
}

842

unknown's avatar
unknown committed
843 844 845 846
/*
  Decode the type of an index from information 
  provided in table object
*/
847
NDB_INDEX_TYPE ha_ndbcluster::get_index_type_from_table(uint inx) const
unknown's avatar
unknown committed
848
{
849 850 851
  bool is_hash_index=  (table->key_info[inx].algorithm == HA_KEY_ALG_HASH);
  if (inx == table->primary_key)
    return is_hash_index ? PRIMARY_KEY_INDEX : PRIMARY_KEY_ORDERED_INDEX;
unknown's avatar
unknown committed
852
  else
853 854
    return ((table->key_info[inx].flags & HA_NOSAME) ? 
	    (is_hash_index ? UNIQUE_INDEX : UNIQUE_ORDERED_INDEX) :
unknown's avatar
unknown committed
855 856
	    ORDERED_INDEX);
} 
857

858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877
int ha_ndbcluster::check_index_fields_not_null(uint inx)
{
  KEY* key_info= table->key_info + inx;
  KEY_PART_INFO* key_part= key_info->key_part;
  KEY_PART_INFO* end= key_part+key_info->key_parts;
  DBUG_ENTER("check_index_fields_not_null");
  
  for (; key_part != end; key_part++) 
    {
      Field* field= key_part->field;
      if (field->maybe_null())
      {
	my_printf_error(ER_NULL_COLUMN_IN_INDEX,ER(ER_NULL_COLUMN_IN_INDEX),
			MYF(0),field->field_name);
	DBUG_RETURN(ER_NULL_COLUMN_IN_INDEX);
      }
    }
  
  DBUG_RETURN(0);
}
unknown's avatar
unknown committed
878 879 880

void ha_ndbcluster::release_metadata()
{
881
  uint i;
882

unknown's avatar
unknown committed
883 884 885 886
  DBUG_ENTER("release_metadata");
  DBUG_PRINT("enter", ("m_tabname: %s", m_tabname));

  m_table= NULL;
unknown's avatar
unknown committed
887
  m_table_info= NULL;
unknown's avatar
unknown committed
888

889
  // Release index list 
890 891
  for (i= 0; i < MAX_KEY; i++)
  {
892 893
    m_index[i].unique_index= NULL;      
    m_index[i].index= NULL;      
894 895
  }

unknown's avatar
unknown committed
896 897 898
  DBUG_VOID_RETURN;
}

unknown's avatar
unknown committed
899
int ha_ndbcluster::get_ndb_lock_type(enum thr_lock_type type)
900
{
901
  if (type >= TL_WRITE_ALLOW_WRITE)
unknown's avatar
unknown committed
902
    return NdbOperation::LM_Exclusive;
903
  else if (uses_blob_value(m_retrieve_all_fields))
904
    return NdbOperation::LM_Read;
unknown's avatar
unknown committed
905
  else
unknown's avatar
unknown committed
906
    return NdbOperation::LM_CommittedRead;
907 908
}

unknown's avatar
unknown committed
909 910 911 912 913 914
static const ulong index_type_flags[]=
{
  /* UNDEFINED_INDEX */
  0,                         

  /* PRIMARY_KEY_INDEX */
915
  HA_ONLY_WHOLE_INDEX, 
916 917

  /* PRIMARY_KEY_ORDERED_INDEX */
918
  /* 
unknown's avatar
unknown committed
919
     Enable HA_KEYREAD_ONLY when "sorted" indexes are supported, 
920 921 922
     thus ORDERD BY clauses can be optimized by reading directly 
     through the index.
  */
unknown's avatar
unknown committed
923
  // HA_KEYREAD_ONLY | 
unknown's avatar
unknown committed
924 925 926
  HA_READ_NEXT |
  HA_READ_RANGE |
  HA_READ_ORDER,
unknown's avatar
unknown committed
927 928

  /* UNIQUE_INDEX */
929
  HA_ONLY_WHOLE_INDEX,
unknown's avatar
unknown committed
930

931
  /* UNIQUE_ORDERED_INDEX */
unknown's avatar
unknown committed
932 933 934
  HA_READ_NEXT |
  HA_READ_RANGE |
  HA_READ_ORDER,
935

unknown's avatar
unknown committed
936
  /* ORDERED_INDEX */
unknown's avatar
unknown committed
937 938 939
  HA_READ_NEXT |
  HA_READ_RANGE |
  HA_READ_ORDER
unknown's avatar
unknown committed
940 941 942 943 944 945 946
};

static const int index_flags_size= sizeof(index_type_flags)/sizeof(ulong);

inline NDB_INDEX_TYPE ha_ndbcluster::get_index_type(uint idx_no) const
{
  DBUG_ASSERT(idx_no < MAX_KEY);
947
  return m_index[idx_no].type;
unknown's avatar
unknown committed
948 949 950 951 952 953 954 955 956 957
}


/*
  Get the flags for an index

  RETURN
    flags depending on the type of the index.
*/

958 959
inline ulong ha_ndbcluster::index_flags(uint idx_no, uint part,
                                        bool all_parts) const 
unknown's avatar
unknown committed
960 961
{ 
  DBUG_ENTER("index_flags");
962
  DBUG_PRINT("info", ("idx_no: %d", idx_no));
unknown's avatar
unknown committed
963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986
  DBUG_ASSERT(get_index_type_from_table(idx_no) < index_flags_size);
  DBUG_RETURN(index_type_flags[get_index_type_from_table(idx_no)]);
}


int ha_ndbcluster::set_primary_key(NdbOperation *op, const byte *key)
{
  KEY* key_info= table->key_info + table->primary_key;
  KEY_PART_INFO* key_part= key_info->key_part;
  KEY_PART_INFO* end= key_part+key_info->key_parts;
  DBUG_ENTER("set_primary_key");

  for (; key_part != end; key_part++) 
  {
    Field* field= key_part->field;
    if (set_ndb_key(op, field, 
		    key_part->fieldnr-1, key))
      ERR_RETURN(op->getNdbError());
    key += key_part->length;
  }
  DBUG_RETURN(0);
}


987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
int ha_ndbcluster::set_primary_key_from_old_data(NdbOperation *op, const byte *old_data)
{
  KEY* key_info= table->key_info + table->primary_key;
  KEY_PART_INFO* key_part= key_info->key_part;
  KEY_PART_INFO* end= key_part+key_info->key_parts;
  DBUG_ENTER("set_primary_key_from_old_data");

  for (; key_part != end; key_part++) 
  {
    Field* field= key_part->field;
    if (set_ndb_key(op, field, 
		    key_part->fieldnr-1, old_data+key_part->offset))
      ERR_RETURN(op->getNdbError());
  }
  DBUG_RETURN(0);
}


unknown's avatar
unknown committed
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
int ha_ndbcluster::set_primary_key(NdbOperation *op)
{
  DBUG_ENTER("set_primary_key");
  KEY* key_info= table->key_info + table->primary_key;
  KEY_PART_INFO* key_part= key_info->key_part;
  KEY_PART_INFO* end= key_part+key_info->key_parts;

  for (; key_part != end; key_part++) 
  {
    Field* field= key_part->field;
    if (set_ndb_key(op, field, 
                    key_part->fieldnr-1, field->ptr))
      ERR_RETURN(op->getNdbError());
  }
  DBUG_RETURN(0);
}

1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
int 
ha_ndbcluster::set_index_key(NdbOperation *op, 
			     const KEY *key_info, 
			     const byte * key_ptr)
{
  DBUG_ENTER("set_index_key");
  uint i;
  KEY_PART_INFO* key_part= key_info->key_part;
  KEY_PART_INFO* end= key_part+key_info->key_parts;
  
  for (i= 0; key_part != end; key_part++, i++) 
  {
    if (set_ndb_key(op, key_part->field, i, 
		    key_part->null_bit ? key_ptr + 1 : key_ptr))
      ERR_RETURN(m_active_trans->getNdbError());
    key_ptr+= key_part->store_length;
  }
  DBUG_RETURN(0);
}
unknown's avatar
unknown committed
1041 1042 1043 1044 1045

/*
  Read one record from NDB using primary key
*/

1046
int ha_ndbcluster::pk_read(const byte *key, uint key_len, byte *buf) 
unknown's avatar
unknown committed
1047
{
1048 1049 1050 1051
  int res;
  DBUG_ENTER("pk_read");
  DBUG_PRINT("enter", ("key_len: %u", key_len));
  DBUG_DUMP("key", (char*)key, key_len);
unknown's avatar
unknown committed
1052 1053 1054 1055 1056
  uint no_fields= table->fields, i;
  NdbConnection *trans= m_active_trans;
  NdbOperation *op;
  THD *thd= current_thd;

1057 1058
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
unknown's avatar
unknown committed
1059
  if (!(op= trans->getNdbOperation((const NDBTAB *) m_table)) || 
1060
      op->readTuple(lm) != 0)
1061
    ERR_RETURN(trans->getNdbError());
1062
  
unknown's avatar
unknown committed
1063 1064 1065 1066 1067 1068
  if (table->primary_key == MAX_KEY) 
  {
    // This table has no primary key, use "hidden" primary key
    DBUG_PRINT("info", ("Using hidden key"));
    DBUG_DUMP("key", (char*)key, 8);    
    if (set_hidden_key(op, no_fields, key))
1069
      ERR_RETURN(trans->getNdbError());
1070
    
unknown's avatar
unknown committed
1071
    // Read key at the same time, for future reference
unknown's avatar
unknown committed
1072
    if (get_ndb_value(op, NULL, no_fields, NULL))
1073
      ERR_RETURN(trans->getNdbError());
unknown's avatar
unknown committed
1074 1075 1076 1077 1078 1079 1080
  } 
  else 
  {
    if ((res= set_primary_key(op, key)))
      return res;
  }
  
1081 1082
  if((res= define_read_attrs(buf, op)))
    DBUG_RETURN(res);
unknown's avatar
unknown committed
1083
  
unknown's avatar
unknown committed
1084
  if (execute_no_commit_ie(this,trans) != 0) 
unknown's avatar
unknown committed
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095
  {
    table->status= STATUS_NOT_FOUND;
    DBUG_RETURN(ndb_err(trans));
  }

  // The value have now been fetched from NDB  
  unpack_record(buf);
  table->status= 0;     
  DBUG_RETURN(0);
}

1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
/*
  Read one complementing record from NDB using primary key from old_data
*/

int ha_ndbcluster::complemented_pk_read(const byte *old_data, byte *new_data)
{
  uint no_fields= table->fields, i;
  NdbConnection *trans= m_active_trans;
  NdbOperation *op;
  THD *thd= current_thd;
  DBUG_ENTER("complemented_pk_read");

1108
  if (m_retrieve_all_fields)
1109 1110 1111
    // We have allready retrieved all fields, nothing to complement
    DBUG_RETURN(0);

1112 1113
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
unknown's avatar
unknown committed
1114
  if (!(op= trans->getNdbOperation((const NDBTAB *) m_table)) || 
1115
      op->readTuple(lm) != 0)
1116
    ERR_RETURN(trans->getNdbError());
1117 1118 1119 1120 1121
  
  int res;
  if ((res= set_primary_key_from_old_data(op, old_data)))
    ERR_RETURN(trans->getNdbError());
  
1122 1123 1124 1125
  // Read all unreferenced non-key field(s)
  for (i= 0; i < no_fields; i++) 
  {
    Field *field= table->field[i];
1126 1127
    if (!((field->flags & PRI_KEY_FLAG) ||
	  (thd->query_id == field->query_id)))
1128
    {
unknown's avatar
unknown committed
1129
      if (get_ndb_value(op, field, i, new_data))
1130
	ERR_RETURN(trans->getNdbError());
1131 1132 1133
    }
  }
  
unknown's avatar
unknown committed
1134
  if (execute_no_commit(this,trans) != 0) 
1135 1136 1137 1138 1139 1140 1141 1142
  {
    table->status= STATUS_NOT_FOUND;
    DBUG_RETURN(ndb_err(trans));
  }

  // The value have now been fetched from NDB  
  unpack_record(new_data);
  table->status= 0;     
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156

  /**
   * restore m_value
   */
  for (i= 0; i < no_fields; i++) 
  {
    Field *field= table->field[i];
    if (!((field->flags & PRI_KEY_FLAG) ||
	  (thd->query_id == field->query_id)))
    {
      m_value[i].ptr= NULL;
    }
  }
  
1157 1158 1159
  DBUG_RETURN(0);
}

1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
/*
  Peek to check if a particular row already exists
*/

int ha_ndbcluster::peek_row()
{
  NdbConnection *trans= m_active_trans;
  NdbOperation *op;
  THD *thd= current_thd;
  DBUG_ENTER("peek_row");
unknown's avatar
unknown committed
1170

1171 1172 1173 1174 1175
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
  if (!(op= trans->getNdbOperation((const NDBTAB *) m_table)) ||
      op->readTuple(lm) != 0)
    ERR_RETURN(trans->getNdbError());
unknown's avatar
unknown committed
1176

1177 1178 1179
  int res;
  if ((res= set_primary_key(op)))
    ERR_RETURN(trans->getNdbError());
unknown's avatar
unknown committed
1180

1181
  if (execute_no_commit_ie(this,trans) != 0)
unknown's avatar
unknown committed
1182 1183 1184 1185
  {
    table->status= STATUS_NOT_FOUND;
    DBUG_RETURN(ndb_err(trans));
  } 
1186 1187
  DBUG_RETURN(0);
}
1188

unknown's avatar
unknown committed
1189 1190 1191 1192 1193 1194 1195
/*
  Read one record from NDB using unique secondary index
*/

int ha_ndbcluster::unique_index_read(const byte *key,
				     uint key_len, byte *buf)
{
1196
  int res;
unknown's avatar
unknown committed
1197 1198 1199 1200 1201 1202
  NdbConnection *trans= m_active_trans;
  NdbIndexOperation *op;
  DBUG_ENTER("unique_index_read");
  DBUG_PRINT("enter", ("key_len: %u, index: %u", key_len, active_index));
  DBUG_DUMP("key", (char*)key, key_len);
  
1203 1204
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
1205 1206
  if (!(op= trans->getNdbIndexOperation((NDBINDEX *) 
					m_index[active_index].unique_index, 
unknown's avatar
unknown committed
1207
                                        (const NDBTAB *) m_table)) ||
1208
      op->readTuple(lm) != 0)
unknown's avatar
unknown committed
1209 1210 1211
    ERR_RETURN(trans->getNdbError());
  
  // Set secondary index key(s)
1212 1213 1214
  if((res= set_index_key(op, table->key_info + active_index, key)))
    DBUG_RETURN(res);
  
1215 1216
  if((res= define_read_attrs(buf, op)))
    DBUG_RETURN(res);
unknown's avatar
unknown committed
1217

unknown's avatar
unknown committed
1218
  if (execute_no_commit_ie(this,trans) != 0) 
unknown's avatar
unknown committed
1219 1220 1221 1222 1223 1224 1225 1226 1227 1228
  {
    table->status= STATUS_NOT_FOUND;
    DBUG_RETURN(ndb_err(trans));
  }
  // The value have now been fetched from NDB
  unpack_record(buf);
  table->status= 0;
  DBUG_RETURN(0);
}

unknown's avatar
unknown committed
1229
inline int ha_ndbcluster::fetch_next(NdbScanOperation* cursor)
1230 1231
{
  DBUG_ENTER("fetch_next");
1232
  int check;
unknown's avatar
unknown committed
1233
  NdbConnection *trans= m_active_trans;
1234
  
1235
  bool contact_ndb= m_lock.type < TL_WRITE_ALLOW_WRITE;
1236 1237
  do {
    DBUG_PRINT("info", ("Call nextResult, contact_ndb: %d", contact_ndb));
unknown's avatar
unknown committed
1238 1239 1240
    /*
      We can only handle one tuple with blobs at a time.
    */
1241
    if (m_ops_pending && m_blobs_pending)
unknown's avatar
unknown committed
1242
    {
unknown's avatar
unknown committed
1243
      if (execute_no_commit(this,trans) != 0)
1244
	DBUG_RETURN(ndb_err(trans));
1245 1246
      m_ops_pending= 0;
      m_blobs_pending= FALSE;
unknown's avatar
unknown committed
1247
    }
1248 1249
    
    if ((check= cursor->nextResult(contact_ndb, m_force_send)) == 0)
1250 1251 1252 1253 1254 1255 1256
    {
      DBUG_RETURN(0);
    } 
    else if (check == 1 || check == 2)
    {
      // 1: No more records
      // 2: No more cached records
1257
      
1258 1259 1260 1261 1262
      /*
	Before fetching more rows and releasing lock(s),
	all pending update or delete operations should 
	be sent to NDB
      */
1263 1264
      DBUG_PRINT("info", ("ops_pending: %d", m_ops_pending));    
      if (m_ops_pending)
1265
      {
1266
	if (m_transaction_on)
1267 1268
	{
	  if (execute_no_commit(this,trans) != 0)
unknown's avatar
unknown committed
1269
	    DBUG_RETURN(-1);
1270 1271 1272 1273
	}
	else
	{
	  if  (execute_commit(this,trans) != 0)
unknown's avatar
unknown committed
1274
	    DBUG_RETURN(-1);
unknown's avatar
unknown committed
1275 1276
	  int res= trans->restart();
	  DBUG_ASSERT(res == 0);
1277
	}
1278
	m_ops_pending= 0;
1279
      }
1280 1281
      contact_ndb= (check == 2);
    }
unknown's avatar
unknown committed
1282 1283 1284 1285
    else
    {
      DBUG_RETURN(-1);
    }
1286
  } while (check == 2);
unknown's avatar
unknown committed
1287

1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298
  DBUG_RETURN(1);
}

/*
  Get the next record of a started scan. Try to fetch
  it locally from NdbApi cached records if possible, 
  otherwise ask NDB for more.

  NOTE
  If this is a update/delete make sure to not contact 
  NDB before any pending ops have been sent to NDB.
unknown's avatar
unknown committed
1299

1300 1301 1302 1303 1304 1305 1306
*/

inline int ha_ndbcluster::next_result(byte *buf)
{  
  int res;
  DBUG_ENTER("next_result");
    
1307 1308 1309
  if (!m_active_cursor)
    DBUG_RETURN(HA_ERR_END_OF_FILE);
  
unknown's avatar
unknown committed
1310
  if((res= fetch_next(m_active_cursor)) == 0)
1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329
  {
    DBUG_PRINT("info", ("One more record found"));    
    
    unpack_record(buf);
    table->status= 0;
    DBUG_RETURN(0);
  }
  else if(res == 1)
  {
    // No more records
    table->status= STATUS_NOT_FOUND;
    
    DBUG_PRINT("info", ("No more records"));
    DBUG_RETURN(HA_ERR_END_OF_FILE);
  }
  else
  {
    DBUG_RETURN(ndb_err(m_active_trans));
  }
unknown's avatar
unknown committed
1330 1331
}

1332
/*
1333
  Set bounds for ordered index scan.
1334 1335
*/

unknown's avatar
unknown committed
1336
int ha_ndbcluster::set_bounds(NdbIndexScanOperation *op,
1337 1338
			      const key_range *keys[2],
			      uint range_no)
1339
{
1340 1341 1342 1343
  const KEY *const key_info= table->key_info + active_index;
  const uint key_parts= key_info->key_parts;
  uint key_tot_len[2];
  uint tot_len;
1344
  uint i, j;
1345 1346

  DBUG_ENTER("set_bounds");
1347
  DBUG_PRINT("info", ("key_parts=%d", key_parts));
1348

1349
  for (j= 0; j <= 1; j++)
1350
  {
1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363
    const key_range *key= keys[j];
    if (key != NULL)
    {
      // for key->flag see ha_rkey_function
      DBUG_PRINT("info", ("key %d length=%d flag=%d",
                          j, key->length, key->flag));
      key_tot_len[j]= key->length;
    }
    else
    {
      DBUG_PRINT("info", ("key %d not present", j));
      key_tot_len[j]= 0;
    }
1364 1365
  }
  tot_len= 0;
unknown's avatar
unknown committed
1366

1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
  for (i= 0; i < key_parts; i++)
  {
    KEY_PART_INFO *key_part= &key_info->key_part[i];
    Field *field= key_part->field;
    uint part_len= key_part->length;
    uint part_store_len= key_part->store_length;
    // Info about each key part
    struct part_st {
      bool part_last;
      const key_range *key;
      const byte *part_ptr;
      bool part_null;
      int bound_type;
      const char* bound_ptr;
    };
    struct part_st part[2];

    for (j= 0; j <= 1; j++)
    {
1386
      struct part_st &p= part[j];
1387 1388 1389 1390 1391 1392 1393
      p.key= NULL;
      p.bound_type= -1;
      if (tot_len < key_tot_len[j])
      {
        p.part_last= (tot_len + part_store_len >= key_tot_len[j]);
        p.key= keys[j];
        p.part_ptr= &p.key->key[tot_len];
unknown's avatar
unknown committed
1394
        p.part_null= key_part->null_bit && *p.part_ptr;
1395
        p.bound_ptr= (const char *)
unknown's avatar
unknown committed
1396
          p.part_null ? 0 : key_part->null_bit ? p.part_ptr + 1 : p.part_ptr;
1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433

        if (j == 0)
        {
          switch (p.key->flag)
          {
            case HA_READ_KEY_EXACT:
              p.bound_type= NdbIndexScanOperation::BoundEQ;
              break;
            case HA_READ_KEY_OR_NEXT:
              p.bound_type= NdbIndexScanOperation::BoundLE;
              break;
            case HA_READ_AFTER_KEY:
              if (! p.part_last)
                p.bound_type= NdbIndexScanOperation::BoundLE;
              else
                p.bound_type= NdbIndexScanOperation::BoundLT;
              break;
            default:
              break;
          }
        }
        if (j == 1) {
          switch (p.key->flag)
          {
            case HA_READ_BEFORE_KEY:
              if (! p.part_last)
                p.bound_type= NdbIndexScanOperation::BoundGE;
              else
                p.bound_type= NdbIndexScanOperation::BoundGT;
              break;
            case HA_READ_AFTER_KEY:     // weird
              p.bound_type= NdbIndexScanOperation::BoundGE;
              break;
            default:
              break;
          }
        }
1434

1435 1436 1437 1438 1439
        if (p.bound_type == -1)
        {
          DBUG_PRINT("error", ("key %d unknown flag %d", j, p.key->flag));
          DBUG_ASSERT(false);
          // Stop setting bounds but continue with what we have
1440
	  op->end_of_bound(range_no);
1441 1442 1443 1444
          DBUG_RETURN(0);
        }
      }
    }
1445

1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
    // Seen with e.g. b = 1 and c > 1
    if (part[0].bound_type == NdbIndexScanOperation::BoundLE &&
        part[1].bound_type == NdbIndexScanOperation::BoundGE &&
        memcmp(part[0].part_ptr, part[1].part_ptr, part_store_len) == 0)
    {
      DBUG_PRINT("info", ("replace LE/GE pair by EQ"));
      part[0].bound_type= NdbIndexScanOperation::BoundEQ;
      part[1].bound_type= -1;
    }
    // Not seen but was in previous version
    if (part[0].bound_type == NdbIndexScanOperation::BoundEQ &&
        part[1].bound_type == NdbIndexScanOperation::BoundGE &&
        memcmp(part[0].part_ptr, part[1].part_ptr, part_store_len) == 0)
    {
      DBUG_PRINT("info", ("remove GE from EQ/GE pair"));
      part[1].bound_type= -1;
    }
1463

1464 1465
    for (j= 0; j <= 1; j++)
    {
1466
      struct part_st &p= part[j];
1467 1468 1469 1470 1471 1472 1473 1474 1475
      // Set bound if not done with this key
      if (p.key != NULL)
      {
        DBUG_PRINT("info", ("key %d:%d offset=%d length=%d last=%d bound=%d",
                            j, i, tot_len, part_len, p.part_last, p.bound_type));
        DBUG_DUMP("info", (const char*)p.part_ptr, part_store_len);

        // Set bound if not cancelled via type -1
        if (p.bound_type != -1)
1476 1477 1478 1479 1480
	{
	  char truncated_field_name[NDB_MAX_ATTR_NAME_SIZE];
	  strnmov(truncated_field_name,field->field_name,sizeof(truncated_field_name));
	  truncated_field_name[sizeof(truncated_field_name)-1]= '\0';
          if (op->setBound(truncated_field_name, p.bound_type, p.bound_ptr))
1481
            ERR_RETURN(op->getNdbError());
1482
	}
1483 1484 1485 1486
      }
    }

    tot_len+= part_store_len;
1487
  }
1488
  op->end_of_bound(range_no);
1489 1490 1491
  DBUG_RETURN(0);
}

unknown's avatar
unknown committed
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505
inline 
int ha_ndbcluster::define_read_attrs(byte* buf, NdbOperation* op)
{
  uint i;
  THD *thd= current_thd;
  NdbConnection *trans= m_active_trans;

  DBUG_ENTER("define_read_attrs");  

  // Define attributes to read
  for (i= 0; i < table->fields; i++) 
  {
    Field *field= table->field[i];
    if ((thd->query_id == field->query_id) ||
1506
	((field->flags & PRI_KEY_FLAG)) || 
1507
	m_retrieve_all_fields)
unknown's avatar
unknown committed
1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530
    {      
      if (get_ndb_value(op, field, i, buf))
	ERR_RETURN(op->getNdbError());
    } 
    else 
    {
      m_value[i].ptr= NULL;
    }
  }
    
  if (table->primary_key == MAX_KEY) 
  {
    DBUG_PRINT("info", ("Getting hidden key"));
    // Scanning table with no primary key
    int hidden_no= table->fields;      
#ifndef DBUG_OFF
    const NDBTAB *tab= (const NDBTAB *) m_table;    
    if (!tab->getColumn(hidden_no))
      DBUG_RETURN(1);
#endif
    if (get_ndb_value(op, NULL, hidden_no, NULL))
      ERR_RETURN(op->getNdbError());
  }
1531
  DBUG_RETURN(0);
unknown's avatar
unknown committed
1532
} 
1533

unknown's avatar
unknown committed
1534
/*
1535
  Start ordered index scan in NDB
unknown's avatar
unknown committed
1536 1537
*/

1538 1539 1540
int ha_ndbcluster::ordered_index_scan(const key_range *start_key,
				      const key_range *end_key,
				      bool sorted, byte* buf)
unknown's avatar
unknown committed
1541
{  
1542
  int res;
unknown's avatar
unknown committed
1543
  bool restart;
unknown's avatar
unknown committed
1544
  NdbConnection *trans= m_active_trans;
unknown's avatar
unknown committed
1545
  NdbIndexScanOperation *op;
1546

unknown's avatar
unknown committed
1547
  DBUG_ENTER("ordered_index_scan");
1548
  DBUG_PRINT("enter", ("index: %u, sorted: %d", active_index, sorted));  
unknown's avatar
unknown committed
1549
  DBUG_PRINT("enter", ("Starting new ordered scan on %s", m_tabname));
unknown's avatar
unknown committed
1550

1551 1552
  // Check that sorted seems to be initialised
  DBUG_ASSERT(sorted == 0 || sorted == 1);
unknown's avatar
unknown committed
1553
  
1554
  if (m_active_cursor == 0)
unknown's avatar
unknown committed
1555 1556 1557 1558 1559 1560 1561
  {
    restart= false;
    NdbOperation::LockMode lm=
      (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
    if (!(op= trans->getNdbIndexScanOperation((NDBINDEX *)
					      m_index[active_index].index, 
					      (const NDBTAB *) m_table)) ||
1562
	op->readTuples(lm, 0, parallelism, sorted))
unknown's avatar
unknown committed
1563
      ERR_RETURN(trans->getNdbError());
1564
    m_active_cursor= op;
unknown's avatar
unknown committed
1565 1566
  } else {
    restart= true;
1567
    op= (NdbIndexScanOperation*)m_active_cursor;
unknown's avatar
unknown committed
1568 1569 1570 1571
    
    DBUG_ASSERT(op->getSorted() == sorted);
    DBUG_ASSERT(op->getLockMode() == 
		(NdbOperation::LockMode)get_ndb_lock_type(m_lock.type));
unknown's avatar
unknown committed
1572
    if(op->reset_bounds(m_force_send))
unknown's avatar
unknown committed
1573 1574
      DBUG_RETURN(ndb_err(m_active_trans));
  }
1575
  
1576
  {
1577
    const key_range *keys[2]= { start_key, end_key };
1578 1579 1580
    res= set_bounds(op, keys);
    if (res)
      DBUG_RETURN(res);
1581
  }
1582
  
1583
  if (!restart && (res= define_read_attrs(buf, op)))
1584
  {
1585
    DBUG_RETURN(res);
unknown's avatar
unknown committed
1586
  }
1587 1588 1589 1590 1591 1592

  if (execute_no_commit(this,trans) != 0)
    DBUG_RETURN(ndb_err(trans));
  
  DBUG_RETURN(next_result(buf));
}
unknown's avatar
unknown committed
1593 1594

/*
1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605
  Start a filtered scan in NDB.

  NOTE
  This function is here as an example of how to start a
  filtered scan. It should be possible to replace full_table_scan 
  with this function and make a best effort attempt 
  at filtering out the irrelevant data by converting the "items" 
  into interpreted instructions.
  This would speed up table scans where there is a limiting WHERE clause
  that doesn't match any index in the table.

unknown's avatar
unknown committed
1606 1607 1608 1609 1610 1611
 */

int ha_ndbcluster::filtered_scan(const byte *key, uint key_len, 
				 byte *buf,
				 enum ha_rkey_function find_flag)
{  
1612
  int res;
unknown's avatar
unknown committed
1613
  NdbConnection *trans= m_active_trans;
1614
  NdbScanOperation *op;
unknown's avatar
unknown committed
1615 1616 1617 1618 1619 1620 1621

  DBUG_ENTER("filtered_scan");
  DBUG_PRINT("enter", ("key_len: %u, index: %u", 
                       key_len, active_index));
  DBUG_DUMP("key", (char*)key, key_len);  
  DBUG_PRINT("info", ("Starting a new filtered scan on %s",
		      m_tabname));
1622

1623 1624 1625
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
  if (!(op= trans->getNdbScanOperation((const NDBTAB *) m_table)) ||
1626
      op->readTuples(lm, 0, parallelism))
unknown's avatar
unknown committed
1627
    ERR_RETURN(trans->getNdbError());
1628
  m_active_cursor= op;
unknown's avatar
unknown committed
1629
  
unknown's avatar
unknown committed
1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644
  {
    // Start scan filter
    NdbScanFilter sf(op);
    sf.begin();
      
    // Set filter using the supplied key data
    byte *key_ptr= (byte *) key;    
    uint tot_len= 0;
    KEY* key_info= table->key_info + active_index;
    for (uint k= 0; k < key_info->key_parts; k++) 
    {
      KEY_PART_INFO* key_part= key_info->key_part+k;
      Field* field= key_part->field;
      uint ndb_fieldnr= key_part->fieldnr-1;
      DBUG_PRINT("key_part", ("fieldnr: %d", ndb_fieldnr));
1645
      //const NDBCOL *col= ((const NDBTAB *) m_table)->getColumn(ndb_fieldnr);
unknown's avatar
unknown committed
1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674
      uint32 field_len=  field->pack_length();
      DBUG_DUMP("key", (char*)key, field_len);
	
      DBUG_PRINT("info", ("Column %s, type: %d, len: %d", 
			  field->field_name, field->real_type(), field_len));
	
      // Define scan filter
      if (field->real_type() == MYSQL_TYPE_STRING)
	sf.eq(ndb_fieldnr, key_ptr, field_len);
      else 
      {
	if (field_len == 8)
	  sf.eq(ndb_fieldnr, (Uint64)*key_ptr);
	else if (field_len <= 4)
	  sf.eq(ndb_fieldnr, (Uint32)*key_ptr);
	else 
	  DBUG_RETURN(1);
      }
	
      key_ptr += field_len;
      tot_len += field_len;
	
      if (tot_len >= key_len)
	break;
    }
    // End scan filter
    sf.end();
  }

1675 1676
  if((res= define_read_attrs(buf, op)))
    DBUG_RETURN(res);
unknown's avatar
unknown committed
1677

1678 1679 1680 1681 1682
  if (execute_no_commit(this,trans) != 0)
    DBUG_RETURN(ndb_err(trans));
  DBUG_PRINT("exit", ("Scan started successfully"));
  DBUG_RETURN(next_result(buf));
}
unknown's avatar
unknown committed
1683 1684

/*
1685
  Start full table scan in NDB
unknown's avatar
unknown committed
1686 1687 1688 1689 1690
 */

int ha_ndbcluster::full_table_scan(byte *buf)
{
  uint i;
1691
  int res;
unknown's avatar
unknown committed
1692
  NdbScanOperation *op;
1693
  NdbConnection *trans= m_active_trans;
unknown's avatar
unknown committed
1694 1695 1696 1697

  DBUG_ENTER("full_table_scan");  
  DBUG_PRINT("enter", ("Starting new scan on %s", m_tabname));

1698 1699 1700
  NdbOperation::LockMode lm=
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
  if (!(op=trans->getNdbScanOperation((const NDBTAB *) m_table)) ||
1701
      op->readTuples(lm, 0, parallelism))
unknown's avatar
unknown committed
1702
    ERR_RETURN(trans->getNdbError());
1703
  m_active_cursor= op;
1704 1705 1706 1707 1708 1709 1710 1711
  
  if((res= define_read_attrs(buf, op)))
    DBUG_RETURN(res);

  if (execute_no_commit(this,trans) != 0)
    DBUG_RETURN(ndb_err(trans));
  DBUG_PRINT("exit", ("Scan started successfully"));
  DBUG_RETURN(next_result(buf));
1712 1713
}

unknown's avatar
unknown committed
1714 1715 1716 1717 1718
/*
  Insert one record into NDB
*/
int ha_ndbcluster::write_row(byte *record)
{
unknown's avatar
unknown committed
1719
  bool has_auto_increment;
unknown's avatar
unknown committed
1720 1721 1722 1723
  uint i;
  NdbConnection *trans= m_active_trans;
  NdbOperation *op;
  int res;
unknown's avatar
unknown committed
1724 1725
  THD *thd= current_thd;

unknown's avatar
unknown committed
1726
  DBUG_ENTER("write_row");
1727

1728
  if(m_ignore_dup_key && table->primary_key != MAX_KEY)
1729
  {
1730 1731 1732 1733 1734 1735 1736 1737 1738
    int peek_res= peek_row();
    
    if (!peek_res) 
    {
      m_dupkey= table->primary_key;
      DBUG_RETURN(HA_ERR_FOUND_DUPP_KEY);
    }
    if (peek_res != HA_ERR_KEY_NOT_FOUND)
      DBUG_RETURN(peek_res);
1739
  }
unknown's avatar
unknown committed
1740
  
unknown's avatar
unknown committed
1741
  statistic_increment(thd->status_var.ha_write_count, &LOCK_status);
unknown's avatar
unknown committed
1742 1743
  if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT)
    table->timestamp_field->set_time();
1744
  has_auto_increment= (table->next_number_field && record == table->record[0]);
unknown's avatar
unknown committed
1745

unknown's avatar
unknown committed
1746
  if (!(op= trans->getNdbOperation((const NDBTAB *) m_table)))
unknown's avatar
unknown committed
1747 1748 1749 1750 1751 1752 1753 1754 1755
    ERR_RETURN(trans->getNdbError());

  res= (m_use_write) ? op->writeTuple() :op->insertTuple(); 
  if (res != 0)
    ERR_RETURN(trans->getNdbError());  
 
  if (table->primary_key == MAX_KEY) 
  {
    // Table has hidden primary key
unknown's avatar
unknown committed
1756
    Uint64 auto_value= m_ndb->getAutoIncrementValue((const NDBTAB *) m_table);
unknown's avatar
unknown committed
1757 1758 1759 1760 1761 1762
    if (set_hidden_key(op, table->fields, (const byte*)&auto_value))
      ERR_RETURN(op->getNdbError());
  } 
  else 
  {
    int res;
1763

1764 1765
    if (has_auto_increment) 
    {
1766
      m_skip_auto_increment= FALSE;
1767
      update_auto_increment();
1768
      m_skip_auto_increment= !auto_increment_column_changed;
1769
    }
1770

unknown's avatar
unknown committed
1771 1772 1773 1774 1775
    if ((res= set_primary_key(op)))
      return res;
  }

  // Set non-key attribute(s)
unknown's avatar
unknown committed
1776
  bool set_blob_value= FALSE;
unknown's avatar
unknown committed
1777 1778 1779 1780
  for (i= 0; i < table->fields; i++) 
  {
    Field *field= table->field[i];
    if (!(field->flags & PRI_KEY_FLAG) &&
1781
	set_ndb_value(op, field, i, &set_blob_value))
1782
    {
1783
      m_skip_auto_increment= TRUE;
unknown's avatar
unknown committed
1784
      ERR_RETURN(op->getNdbError());
1785
    }
unknown's avatar
unknown committed
1786 1787 1788 1789 1790 1791 1792 1793 1794
  }

  /*
    Execute write operation
    NOTE When doing inserts with many values in 
    each INSERT statement it should not be necessary
    to NoCommit the transaction between each row.
    Find out how this is detected!
  */
1795
  m_rows_inserted++;
1796
  no_uncommitted_rows_update(1);
1797 1798 1799
  m_bulk_insert_not_flushed= TRUE;
  if ((m_rows_to_insert == 1) || 
      ((m_rows_inserted % m_bulk_insert_rows) == 0) ||
1800
      set_blob_value)
1801
  {
1802
    THD *thd= current_thd;
1803 1804 1805
    // Send rows to NDB
    DBUG_PRINT("info", ("Sending inserts to NDB, "\
			"rows_inserted:%d, bulk_insert_rows: %d", 
1806
			(int)m_rows_inserted, (int)m_bulk_insert_rows));
1807

1808
    m_bulk_insert_not_flushed= FALSE;
1809 1810
    //    if (thd->transaction.on)
    if (m_transaction_on)
1811
    {
unknown's avatar
unknown committed
1812
      if (execute_no_commit(this,trans) != 0)
1813
      {
1814
	m_skip_auto_increment= TRUE;
1815
	no_uncommitted_rows_execute_failure();
1816 1817
	DBUG_RETURN(ndb_err(trans));
      }
1818 1819
    }
    else
1820
    {
unknown's avatar
unknown committed
1821
      if (execute_commit(this,trans) != 0)
1822
      {
1823
	m_skip_auto_increment= TRUE;
1824
	no_uncommitted_rows_execute_failure();
1825
	DBUG_RETURN(ndb_err(trans));
1826
      }
unknown's avatar
unknown committed
1827 1828
      int res= trans->restart();
      DBUG_ASSERT(res == 0);
1829
    }
1830
  }
1831
  if ((has_auto_increment) && (m_skip_auto_increment))
unknown's avatar
unknown committed
1832
  {
1833
    Uint64 next_val= (Uint64) table->next_number_field->val_int() + 1;
unknown's avatar
unknown committed
1834
    DBUG_PRINT("info", 
1835 1836
	       ("Trying to set next auto increment value to %lu",
                (ulong) next_val));
unknown's avatar
unknown committed
1837
    if (m_ndb->setAutoIncrementValue((const NDBTAB *) m_table, next_val, TRUE))
unknown's avatar
unknown committed
1838 1839
      DBUG_PRINT("info", 
		 ("Setting next auto increment value to %u", next_val));  
1840
  }
1841
  m_skip_auto_increment= TRUE;
1842

unknown's avatar
unknown committed
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862
  DBUG_RETURN(0);
}


/* Compare if a key in a row has changed */

int ha_ndbcluster::key_cmp(uint keynr, const byte * old_row,
			   const byte * new_row)
{
  KEY_PART_INFO *key_part=table->key_info[keynr].key_part;
  KEY_PART_INFO *end=key_part+table->key_info[keynr].key_parts;

  for (; key_part != end ; key_part++)
  {
    if (key_part->null_bit)
    {
      if ((old_row[key_part->null_offset] & key_part->null_bit) !=
	  (new_row[key_part->null_offset] & key_part->null_bit))
	return 1;
    }
1863
    if (key_part->key_part_flag & (HA_BLOB_PART | HA_VAR_LENGTH_PART))
unknown's avatar
unknown committed
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888
    {

      if (key_part->field->cmp_binary((char*) (old_row + key_part->offset),
				      (char*) (new_row + key_part->offset),
				      (ulong) key_part->length))
	return 1;
    }
    else
    {
      if (memcmp(old_row+key_part->offset, new_row+key_part->offset,
		 key_part->length))
	return 1;
    }
  }
  return 0;
}

/*
  Update one record in NDB using primary key
*/

int ha_ndbcluster::update_row(const byte *old_data, byte *new_data)
{
  THD *thd= current_thd;
  NdbConnection *trans= m_active_trans;
1889
  NdbScanOperation* cursor= m_active_cursor;
unknown's avatar
unknown committed
1890 1891 1892 1893
  NdbOperation *op;
  uint i;
  DBUG_ENTER("update_row");
  
unknown's avatar
unknown committed
1894
  statistic_increment(thd->status_var.ha_update_count, &LOCK_status);
unknown's avatar
unknown committed
1895 1896 1897
  if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE)
    table->timestamp_field->set_time();

1898
  /* Check for update of primary key for special handling */  
1899 1900
  if ((table->primary_key != MAX_KEY) &&
      (key_cmp(table->primary_key, old_data, new_data)))
1901
  {
1902
    int read_res, insert_res, delete_res;
1903

1904
    DBUG_PRINT("info", ("primary key update, doing pk read+insert+delete"));
1905
    // Get all old fields, since we optimize away fields not in query
1906
    read_res= complemented_pk_read(old_data, new_data);
1907 1908 1909 1910 1911 1912
    if (read_res)
    {
      DBUG_PRINT("info", ("pk read failed"));
      DBUG_RETURN(read_res);
    }
    // Insert new row
1913 1914
    insert_res= write_row(new_data);
    if (insert_res)
1915 1916 1917 1918
    {
      DBUG_PRINT("info", ("insert failed"));
      DBUG_RETURN(insert_res);
    }
1919 1920
    // Delete old row
    DBUG_PRINT("info", ("insert succeded"));
1921
    m_primary_key_update= TRUE;
1922
    delete_res= delete_row(old_data);
1923
    m_primary_key_update= FALSE;
1924 1925 1926 1927 1928 1929 1930 1931
    if (delete_res)
    {
      DBUG_PRINT("info", ("delete failed"));
      // Undo write_row(new_data)
      DBUG_RETURN(delete_row(new_data));
    }     
    DBUG_PRINT("info", ("insert+delete succeeded"));
    DBUG_RETURN(0);
1932
  }
1933

1934
  if (cursor)
unknown's avatar
unknown committed
1935
  {
1936 1937 1938 1939 1940 1941 1942 1943
    /*
      We are scanning records and want to update the record
      that was just found, call updateTuple on the cursor 
      to take over the lock to a new update operation
      And thus setting the primary key of the record from 
      the active record in cursor
    */
    DBUG_PRINT("info", ("Calling updateTuple on cursor"));
1944
    if (!(op= cursor->updateCurrentTuple()))
1945
      ERR_RETURN(trans->getNdbError());
1946
    m_ops_pending++;
unknown's avatar
unknown committed
1947
    if (uses_blob_value(FALSE))
1948
      m_blobs_pending= TRUE;
1949 1950 1951
  }
  else
  {  
unknown's avatar
unknown committed
1952
    if (!(op= trans->getNdbOperation((const NDBTAB *) m_table)) ||
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963
	op->updateTuple() != 0)
      ERR_RETURN(trans->getNdbError());  
    
    if (table->primary_key == MAX_KEY) 
    {
      // This table has no primary key, use "hidden" primary key
      DBUG_PRINT("info", ("Using hidden key"));
      
      // Require that the PK for this record has previously been 
      // read into m_value
      uint no_fields= table->fields;
1964
      const NdbRecAttr* rec= m_value[no_fields].rec;
1965 1966 1967 1968 1969 1970 1971 1972 1973
      DBUG_ASSERT(rec);
      DBUG_DUMP("key", (char*)rec->aRef(), NDB_HIDDEN_PRIMARY_KEY_LENGTH);
      
      if (set_hidden_key(op, no_fields, rec->aRef()))
	ERR_RETURN(op->getNdbError());
    } 
    else 
    {
      int res;
1974
      if ((res= set_primary_key_from_old_data(op, old_data)))
1975 1976
	DBUG_RETURN(res);
    }
unknown's avatar
unknown committed
1977 1978 1979 1980 1981 1982
  }

  // Set non-key attribute(s)
  for (i= 0; i < table->fields; i++) 
  {
    Field *field= table->field[i];
1983
    if (((thd->query_id == field->query_id) || m_retrieve_all_fields) &&
unknown's avatar
unknown committed
1984 1985 1986 1987
        (!(field->flags & PRI_KEY_FLAG)) &&
	set_ndb_value(op, field, i))
      ERR_RETURN(op->getNdbError());
  }
1988

unknown's avatar
unknown committed
1989
  // Execute update operation
unknown's avatar
unknown committed
1990
  if (!cursor && execute_no_commit(this,trans) != 0) {
1991
    no_uncommitted_rows_execute_failure();
unknown's avatar
unknown committed
1992
    DBUG_RETURN(ndb_err(trans));
1993
  }
unknown's avatar
unknown committed
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
  
  DBUG_RETURN(0);
}


/*
  Delete one record from NDB, using primary key 
*/

int ha_ndbcluster::delete_row(const byte *record)
{
unknown's avatar
unknown committed
2005
  THD *thd= current_thd;
unknown's avatar
unknown committed
2006
  NdbConnection *trans= m_active_trans;
2007
  NdbScanOperation* cursor= m_active_cursor;
unknown's avatar
unknown committed
2008 2009 2010
  NdbOperation *op;
  DBUG_ENTER("delete_row");

unknown's avatar
unknown committed
2011
  statistic_increment(thd->status_var.ha_delete_count,&LOCK_status);
unknown's avatar
unknown committed
2012

2013
  if (cursor)
unknown's avatar
unknown committed
2014
  {
2015
    /*
2016
      We are scanning records and want to delete the record
2017
      that was just found, call deleteTuple on the cursor 
2018
      to take over the lock to a new delete operation
2019 2020 2021 2022
      And thus setting the primary key of the record from 
      the active record in cursor
    */
    DBUG_PRINT("info", ("Calling deleteTuple on cursor"));
2023
    if (cursor->deleteCurrentTuple() != 0)
2024
      ERR_RETURN(trans->getNdbError());     
2025
    m_ops_pending++;
unknown's avatar
unknown committed
2026

2027 2028
    no_uncommitted_rows_update(-1);

2029 2030 2031 2032
    // If deleting from cursor, NoCommit will be handled in next_result
    DBUG_RETURN(0);
  }
  else
unknown's avatar
unknown committed
2033
  {
2034
    
unknown's avatar
unknown committed
2035
    if (!(op=trans->getNdbOperation((const NDBTAB *) m_table)) || 
2036 2037 2038
	op->deleteTuple() != 0)
      ERR_RETURN(trans->getNdbError());
    
2039 2040
    no_uncommitted_rows_update(-1);
    
2041 2042 2043 2044 2045
    if (table->primary_key == MAX_KEY) 
    {
      // This table has no primary key, use "hidden" primary key
      DBUG_PRINT("info", ("Using hidden key"));
      uint no_fields= table->fields;
2046
      const NdbRecAttr* rec= m_value[no_fields].rec;
2047 2048 2049 2050 2051 2052 2053 2054
      DBUG_ASSERT(rec != NULL);
      
      if (set_hidden_key(op, no_fields, rec->aRef()))
	ERR_RETURN(op->getNdbError());
    } 
    else 
    {
      int res;
2055 2056 2057 2058
      if ((res= (m_primary_key_update ?
		 set_primary_key_from_old_data(op, record)
		 : set_primary_key(op))))
	  return res;  
2059
    }
unknown's avatar
unknown committed
2060
  }
2061
  
unknown's avatar
unknown committed
2062
  // Execute delete operation
unknown's avatar
unknown committed
2063
  if (execute_no_commit(this,trans) != 0) {
2064
    no_uncommitted_rows_execute_failure();
unknown's avatar
unknown committed
2065
    DBUG_RETURN(ndb_err(trans));
2066
  }
unknown's avatar
unknown committed
2067 2068
  DBUG_RETURN(0);
}
2069
  
unknown's avatar
unknown committed
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087
/*
  Unpack a record read from NDB 

  SYNOPSIS
    unpack_record()
    buf			Buffer to store read row

  NOTE
    The data for each row is read directly into the
    destination buffer. This function is primarily 
    called in order to check if any fields should be 
    set to null.
*/

void ha_ndbcluster::unpack_record(byte* buf)
{
  uint row_offset= (uint) (buf - table->record[0]);
  Field **field, **end;
unknown's avatar
unknown committed
2088
  NdbValue *value= m_value;
unknown's avatar
unknown committed
2089
  DBUG_ENTER("unpack_record");
2090

2091
  end= table->field + table->fields;
unknown's avatar
unknown committed
2092 2093 2094 2095 2096 2097 2098
  
  // Set null flag(s)
  bzero(buf, table->null_bytes);
  for (field= table->field, end= field+table->fields;
       field < end;
       field++, value++)
  {
unknown's avatar
unknown committed
2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
    if ((*value).ptr)
    {
      if (! ((*field)->flags & BLOB_FLAG))
      {
        if ((*value).rec->isNULL())
         (*field)->set_null(row_offset);
      }
      else
      {
        NdbBlob* ndb_blob= (*value).blob;
unknown's avatar
unknown committed
2109
        bool isNull= TRUE;
unknown's avatar
unknown committed
2110 2111 2112 2113 2114 2115
        int ret= ndb_blob->getNull(isNull);
        DBUG_ASSERT(ret == 0);
        if (isNull)
         (*field)->set_null(row_offset);
      }
    }
unknown's avatar
unknown committed
2116
  }
2117
  
unknown's avatar
unknown committed
2118 2119 2120 2121 2122 2123
#ifndef DBUG_OFF
  // Read and print all values that was fetched
  if (table->primary_key == MAX_KEY)
  {
    // Table with hidden primary key
    int hidden_no= table->fields;
unknown's avatar
unknown committed
2124
    const NDBTAB *tab= (const NDBTAB *) m_table;
unknown's avatar
unknown committed
2125
    const NDBCOL *hidden_col= tab->getColumn(hidden_no);
2126
    const NdbRecAttr* rec= m_value[hidden_no].rec;
unknown's avatar
unknown committed
2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141
    DBUG_ASSERT(rec);
    DBUG_PRINT("hidden", ("%d: %s \"%llu\"", hidden_no, 
                          hidden_col->getName(), rec->u_64_value()));
  } 
  print_results();
#endif
  DBUG_VOID_RETURN;
}

/*
  Utility function to print/dump the fetched field
 */

void ha_ndbcluster::print_results()
{
unknown's avatar
unknown committed
2142
  const NDBTAB *tab= (const NDBTAB*) m_table;
unknown's avatar
unknown committed
2143 2144 2145
  DBUG_ENTER("print_results");

#ifndef DBUG_OFF
2146

unknown's avatar
unknown committed
2147 2148 2149 2150 2151
  if (!_db_on_)
    DBUG_VOID_RETURN;
  
  for (uint f=0; f<table->fields;f++)
  {
2152 2153
    // Use DBUG_PRINT since DBUG_FILE cannot be filtered out
    char buf[2000];
unknown's avatar
unknown committed
2154 2155
    Field *field;
    const NDBCOL *col;
unknown's avatar
unknown committed
2156
    NdbValue value;
2157
    NdbBlob *ndb_blob;
unknown's avatar
unknown committed
2158

2159
    buf[0] = 0;
unknown's avatar
unknown committed
2160
    if (!(value= m_value[f]).ptr)
unknown's avatar
unknown committed
2161
    {
2162 2163
      my_snprintf(buf, sizeof(buf), "not read");
      goto print_value;
unknown's avatar
unknown committed
2164 2165 2166 2167
    }
    field= table->field[f];
    DBUG_DUMP("field->ptr", (char*)field->ptr, field->pack_length());
    col= tab->getColumn(f);
unknown's avatar
unknown committed
2168 2169

    if (! (field->flags & BLOB_FLAG))
unknown's avatar
unknown committed
2170
    {
2171
      ndb_blob= NULL;
unknown's avatar
unknown committed
2172 2173
      if (value.rec->isNULL())
      {
2174 2175
        my_snprintf(buf, sizeof(buf), "NULL");
        goto print_value;
unknown's avatar
unknown committed
2176 2177 2178 2179 2180
      }
    }
    else
    {
      ndb_blob= value.blob;
unknown's avatar
unknown committed
2181
      bool isNull= TRUE;
unknown's avatar
unknown committed
2182 2183
      ndb_blob->getNull(isNull);
      if (isNull) {
2184 2185
        my_snprintf(buf, sizeof(buf), "NULL");
        goto print_value;
unknown's avatar
unknown committed
2186
      }
unknown's avatar
unknown committed
2187 2188 2189 2190 2191
    }

    switch (col->getType()) {
    case NdbDictionary::Column::Tinyint: {
      char value= *field->ptr;
2192
      my_snprintf(buf, sizeof(buf), "Tinyint %d", value);
unknown's avatar
unknown committed
2193 2194 2195 2196
      break;
    }
    case NdbDictionary::Column::Tinyunsigned: {
      unsigned char value= *field->ptr;
2197
      my_snprintf(buf, sizeof(buf), "Tinyunsigned %u", value);
unknown's avatar
unknown committed
2198 2199 2200 2201
      break;
    }
    case NdbDictionary::Column::Smallint: {
      short value= *field->ptr;
2202
      my_snprintf(buf, sizeof(buf), "Smallint %d", value);
unknown's avatar
unknown committed
2203 2204 2205 2206
      break;
    }
    case NdbDictionary::Column::Smallunsigned: {
      unsigned short value= *field->ptr;
2207
      my_snprintf(buf, sizeof(buf), "Smallunsigned %u", value);
unknown's avatar
unknown committed
2208 2209 2210 2211 2212
      break;
    }
    case NdbDictionary::Column::Mediumint: {
      byte value[3];
      memcpy(value, field->ptr, 3);
2213
      my_snprintf(buf, sizeof(buf), "Mediumint %d,%d,%d", value[0], value[1], value[2]);
unknown's avatar
unknown committed
2214 2215 2216 2217 2218
      break;
    }
    case NdbDictionary::Column::Mediumunsigned: {
      byte value[3];
      memcpy(value, field->ptr, 3);
2219
      my_snprintf(buf, sizeof(buf), "Mediumunsigned %u,%u,%u", value[0], value[1], value[2]);
unknown's avatar
unknown committed
2220 2221 2222
      break;
    }
    case NdbDictionary::Column::Int: {
2223
      my_snprintf(buf, sizeof(buf), "Int %d", value);
unknown's avatar
unknown committed
2224 2225 2226 2227
      break;
    }
    case NdbDictionary::Column::Unsigned: {
      Uint32 value= (Uint32) *field->ptr;
2228
      my_snprintf(buf, sizeof(buf), "Unsigned %u", value);
unknown's avatar
unknown committed
2229 2230 2231 2232
      break;
    }
    case NdbDictionary::Column::Bigint: {
      Int64 value= (Int64) *field->ptr;
2233
      my_snprintf(buf, sizeof(buf), "Bigint %lld", value);
unknown's avatar
unknown committed
2234 2235 2236 2237
      break;
    }
    case NdbDictionary::Column::Bigunsigned: {
      Uint64 value= (Uint64) *field->ptr;
2238
      my_snprintf(buf, sizeof(buf), "Bigunsigned %llu", value);
unknown's avatar
unknown committed
2239 2240 2241 2242
      break;
    }
    case NdbDictionary::Column::Float: {
      float value= (float) *field->ptr;
2243
      my_snprintf(buf, sizeof(buf), "Float %f", (double)value);
unknown's avatar
unknown committed
2244 2245 2246 2247
      break;
    }
    case NdbDictionary::Column::Double: {
      double value= (double) *field->ptr;
2248
      my_snprintf(buf, sizeof(buf), "Double %f", value);
unknown's avatar
unknown committed
2249 2250 2251 2252
      break;
    }
    case NdbDictionary::Column::Decimal: {
      char *value= field->ptr;
2253
      my_snprintf(buf, sizeof(buf), "Decimal '%-*s'", field->pack_length(), value);
unknown's avatar
unknown committed
2254 2255 2256
      break;
    }
    case NdbDictionary::Column::Char:{
2257
      const char *value= (char *) field->ptr;
2258
      my_snprintf(buf, sizeof(buf), "Char '%.*s'", field->pack_length(), value);
unknown's avatar
unknown committed
2259 2260 2261 2262 2263
      break;
    }
    case NdbDictionary::Column::Varchar:
    case NdbDictionary::Column::Binary:
    case NdbDictionary::Column::Varbinary: {
2264
      const char *value= (char *) field->ptr;
2265
      my_snprintf(buf, sizeof(buf), "Var '%.*s'", field->pack_length(), value);
unknown's avatar
unknown committed
2266 2267
      break;
    }
unknown's avatar
unknown committed
2268 2269
    case NdbDictionary::Column::Bit: {
      const char *value= (char *) field->ptr;
2270
      my_snprintf(buf, sizeof(buf), "Bit '%.*s'", field->pack_length(), value);
unknown's avatar
unknown committed
2271 2272
      break;
    }
unknown's avatar
unknown committed
2273 2274
    case NdbDictionary::Column::Datetime: {
      Uint64 value= (Uint64) *field->ptr;
2275
      my_snprintf(buf, sizeof(buf), "Datetime %llu", value);
unknown's avatar
unknown committed
2276 2277 2278 2279
      break;
    }
    case NdbDictionary::Column::Timespec: {
      Uint64 value= (Uint64) *field->ptr;
2280
      my_snprintf(buf, sizeof(buf), "Timespec %llu", value);
unknown's avatar
unknown committed
2281 2282
      break;
    }
unknown's avatar
unknown committed
2283 2284 2285
    case NdbDictionary::Column::Blob: {
      Uint64 len= 0;
      ndb_blob->getLength(len);
2286
      my_snprintf(buf, sizeof(buf), "Blob [len=%u]", (unsigned)len);
unknown's avatar
unknown committed
2287 2288 2289 2290 2291
      break;
    }
    case NdbDictionary::Column::Text: {
      Uint64 len= 0;
      ndb_blob->getLength(len);
2292
      my_snprintf(buf, sizeof(buf), "Text [len=%u]", (unsigned)len);
unknown's avatar
unknown committed
2293 2294 2295
      break;
    }
    case NdbDictionary::Column::Undefined:
2296
      my_snprintf(buf, sizeof(buf), "Unknown type: %d", col->getType());
unknown's avatar
unknown committed
2297
      break;
unknown's avatar
unknown committed
2298
    }
2299 2300 2301

print_value:
    DBUG_PRINT("value", ("%u,%s: %s", f, col->getName(), buf));
unknown's avatar
unknown committed
2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318
  }
#endif
  DBUG_VOID_RETURN;
}


int ha_ndbcluster::index_init(uint index)
{
  DBUG_ENTER("index_init");
  DBUG_PRINT("enter", ("index: %u", index));
  DBUG_RETURN(handler::index_init(index));
}


int ha_ndbcluster::index_end()
{
  DBUG_ENTER("index_end");
2319
  DBUG_RETURN(close_scan());
unknown's avatar
unknown committed
2320 2321
}

2322 2323 2324 2325 2326 2327 2328 2329
/**
 * Check if key contains null
 */
static
int
check_null_in_key(const KEY* key_info, const byte *key, uint key_len)
{
  KEY_PART_INFO *curr_part, *end_part;
2330
  const byte* end_ptr= key + key_len;
2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343
  curr_part= key_info->key_part;
  end_part= curr_part + key_info->key_parts;
  

  for (; curr_part != end_part && key < end_ptr; curr_part++)
  {
    if(curr_part->null_bit && *key)
      return 1;

    key += curr_part->store_length;
  }
  return 0;
}
unknown's avatar
unknown committed
2344 2345

int ha_ndbcluster::index_read(byte *buf,
2346 2347
			      const byte *key, uint key_len, 
			      enum ha_rkey_function find_flag)
unknown's avatar
unknown committed
2348 2349 2350 2351 2352
{
  DBUG_ENTER("index_read");
  DBUG_PRINT("enter", ("active_index: %u, key_len: %u, find_flag: %d", 
                       active_index, key_len, find_flag));

unknown's avatar
unknown committed
2353
  int error;
2354 2355
  ndb_index_type type= get_index_type(active_index);
  const KEY* key_info= table->key_info+active_index;
unknown's avatar
unknown committed
2356 2357 2358 2359 2360
  switch (type){
  case PRIMARY_KEY_ORDERED_INDEX:
  case PRIMARY_KEY_INDEX:
    if (find_flag == HA_READ_KEY_EXACT && key_info->key_length == key_len)
    {
2361 2362
      if(m_active_cursor && (error= close_scan()))
	DBUG_RETURN(error);
unknown's avatar
unknown committed
2363 2364 2365 2366 2367 2368 2369 2370 2371
      DBUG_RETURN(pk_read(key, key_len, buf));
    }
    else if (type == PRIMARY_KEY_INDEX)
    {
      DBUG_RETURN(1);
    }
    break;
  case UNIQUE_ORDERED_INDEX:
  case UNIQUE_INDEX:
2372 2373
    if (find_flag == HA_READ_KEY_EXACT && key_info->key_length == key_len &&
	!check_null_in_key(key_info, key, key_len))
unknown's avatar
unknown committed
2374
    {
2375 2376
      if(m_active_cursor && (error= close_scan()))
	DBUG_RETURN(error);
unknown's avatar
unknown committed
2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
      DBUG_RETURN(unique_index_read(key, key_len, buf));
    }
    else if (type == UNIQUE_INDEX)
    {
      DBUG_RETURN(1);
    }
    break;
  case ORDERED_INDEX:
    break;
  default:
  case UNDEFINED_INDEX:
unknown's avatar
unknown committed
2388
    DBUG_ASSERT(FALSE);
2389
    DBUG_RETURN(1);
unknown's avatar
unknown committed
2390 2391 2392
    break;
  }
  
2393
  key_range start_key;
2394 2395 2396
  start_key.key= key;
  start_key.length= key_len;
  start_key.flag= find_flag;
unknown's avatar
unknown committed
2397
  error= ordered_index_scan(&start_key, 0, TRUE, buf);  
unknown's avatar
unknown committed
2398
  DBUG_RETURN(error == HA_ERR_END_OF_FILE ? HA_ERR_KEY_NOT_FOUND : error);
unknown's avatar
unknown committed
2399 2400 2401 2402 2403 2404 2405
}


int ha_ndbcluster::index_read_idx(byte *buf, uint index_no, 
			      const byte *key, uint key_len, 
			      enum ha_rkey_function find_flag)
{
unknown's avatar
unknown committed
2406
  statistic_increment(current_thd->status_var.ha_read_key_count, &LOCK_status);
unknown's avatar
unknown committed
2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417
  DBUG_ENTER("index_read_idx");
  DBUG_PRINT("enter", ("index_no: %u, key_len: %u", index_no, key_len));  
  index_init(index_no);  
  DBUG_RETURN(index_read(buf, key, key_len, find_flag));
}


int ha_ndbcluster::index_next(byte *buf)
{
  DBUG_ENTER("index_next");

2418
  int error= 1;
unknown's avatar
unknown committed
2419 2420
  statistic_increment(current_thd->status_var.ha_read_next_count,
		      &LOCK_status);
2421
  DBUG_RETURN(next_result(buf));
unknown's avatar
unknown committed
2422 2423 2424 2425 2426 2427
}


int ha_ndbcluster::index_prev(byte *buf)
{
  DBUG_ENTER("index_prev");
unknown's avatar
unknown committed
2428 2429
  statistic_increment(current_thd->status_var.ha_read_prev_count,
		      &LOCK_status);
unknown's avatar
unknown committed
2430 2431 2432 2433 2434 2435 2436
  DBUG_RETURN(1);
}


int ha_ndbcluster::index_first(byte *buf)
{
  DBUG_ENTER("index_first");
unknown's avatar
unknown committed
2437 2438
  statistic_increment(current_thd->status_var.ha_read_first_count,
		      &LOCK_status);
unknown's avatar
unknown committed
2439 2440 2441
  // Start the ordered index scan and fetch the first row

  // Only HA_READ_ORDER indexes get called by index_first
unknown's avatar
unknown committed
2442
  DBUG_RETURN(ordered_index_scan(0, 0, TRUE, buf));
unknown's avatar
unknown committed
2443 2444 2445 2446 2447 2448
}


int ha_ndbcluster::index_last(byte *buf)
{
  DBUG_ENTER("index_last");
2449
  statistic_increment(current_thd->status_var.ha_read_last_count,&LOCK_status);
unknown's avatar
unknown committed
2450
  int res;
unknown's avatar
unknown committed
2451
  if((res= ordered_index_scan(0, 0, TRUE, buf)) == 0){
2452
    NdbScanOperation *cursor= m_active_cursor; 
unknown's avatar
unknown committed
2453
    while((res= cursor->nextResult(TRUE, m_force_send)) == 0);
unknown's avatar
unknown committed
2454 2455 2456 2457 2458 2459
    if(res == 1){
      unpack_record(buf);
      table->status= 0;     
      DBUG_RETURN(0);
    }
  }
unknown's avatar
unknown committed
2460
  DBUG_RETURN(res);
unknown's avatar
unknown committed
2461 2462 2463
}


2464 2465 2466 2467 2468
inline
int ha_ndbcluster::read_range_first_to_buf(const key_range *start_key,
					   const key_range *end_key,
					   bool eq_range, bool sorted,
					   byte* buf)
2469
{
2470
  KEY* key_info;
2471 2472
  int error= 1; 
  DBUG_ENTER("ha_ndbcluster::read_range_first_to_buf");
2473
  DBUG_PRINT("info", ("eq_range: %d, sorted: %d", eq_range, sorted));
2474

2475
  switch (get_index_type(active_index)){
2476
  case PRIMARY_KEY_ORDERED_INDEX:
2477
  case PRIMARY_KEY_INDEX:
2478 2479 2480 2481
    key_info= table->key_info + active_index;
    if (start_key && 
	start_key->length == key_info->key_length &&
	start_key->flag == HA_READ_KEY_EXACT)
2482
    {
2483 2484
      if(m_active_cursor && (error= close_scan()))
	DBUG_RETURN(error);
2485 2486 2487
      error= pk_read(start_key->key, start_key->length, buf);      
      DBUG_RETURN(error == HA_ERR_KEY_NOT_FOUND ? HA_ERR_END_OF_FILE : error);
    }
2488
    break;
2489
  case UNIQUE_ORDERED_INDEX:
2490
  case UNIQUE_INDEX:
2491
    key_info= table->key_info + active_index;
2492 2493 2494
    if (start_key && start_key->length == key_info->key_length &&
	start_key->flag == HA_READ_KEY_EXACT && 
	!check_null_in_key(key_info, start_key->key, start_key->length))
2495
    {
2496 2497
      if(m_active_cursor && (error= close_scan()))
	DBUG_RETURN(error);
2498 2499 2500
      error= unique_index_read(start_key->key, start_key->length, buf);
      DBUG_RETURN(error == HA_ERR_KEY_NOT_FOUND ? HA_ERR_END_OF_FILE : error);
    }
2501 2502 2503 2504
    break;
  default:
    break;
  }
2505 2506

  // Start the ordered index scan and fetch the first row
unknown's avatar
unknown committed
2507
  error= ordered_index_scan(start_key, end_key, sorted, buf);
2508 2509 2510
  DBUG_RETURN(error);
}

2511

unknown's avatar
unknown committed
2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525
int ha_ndbcluster::read_range_first(const key_range *start_key,
				    const key_range *end_key,
				    bool eq_range, bool sorted)
{
  byte* buf= table->record[0];
  DBUG_ENTER("ha_ndbcluster::read_range_first");
  
  DBUG_RETURN(read_range_first_to_buf(start_key,
				      end_key,
				      eq_range, 
				      sorted,
				      buf));
}

2526
int ha_ndbcluster::read_range_next()
2527 2528 2529 2530 2531 2532
{
  DBUG_ENTER("ha_ndbcluster::read_range_next");
  DBUG_RETURN(next_result(table->record[0]));
}


unknown's avatar
unknown committed
2533 2534
int ha_ndbcluster::rnd_init(bool scan)
{
2535
  NdbScanOperation *cursor= m_active_cursor;
unknown's avatar
unknown committed
2536 2537
  DBUG_ENTER("rnd_init");
  DBUG_PRINT("enter", ("scan: %d", scan));
2538
  // Check if scan is to be restarted
unknown's avatar
unknown committed
2539 2540 2541 2542
  if (cursor)
  {
    if (!scan)
      DBUG_RETURN(1);
unknown's avatar
unknown committed
2543
    int res= cursor->restart(m_force_send);
unknown's avatar
unknown committed
2544
    DBUG_ASSERT(res == 0);
unknown's avatar
unknown committed
2545
  }
unknown's avatar
unknown committed
2546 2547 2548 2549
  index_init(table->primary_key);
  DBUG_RETURN(0);
}

2550 2551
int ha_ndbcluster::close_scan()
{
unknown's avatar
unknown committed
2552
  NdbConnection *trans= m_active_trans;
2553 2554
  DBUG_ENTER("close_scan");

unknown's avatar
unknown committed
2555 2556
  m_multi_cursor= 0;
  if (!m_active_cursor && !m_multi_cursor)
2557 2558
    DBUG_RETURN(1);

unknown's avatar
unknown committed
2559
  NdbScanOperation *cursor= m_active_cursor ? m_active_cursor : m_multi_cursor;
unknown's avatar
unknown committed
2560
  
2561
  if (m_ops_pending)
unknown's avatar
unknown committed
2562 2563 2564 2565 2566
  {
    /*
      Take over any pending transactions to the 
      deleteing/updating transaction before closing the scan    
    */
2567
    DBUG_PRINT("info", ("ops_pending: %d", m_ops_pending));    
unknown's avatar
unknown committed
2568
    if (execute_no_commit(this,trans) != 0) {
2569
      no_uncommitted_rows_execute_failure();
unknown's avatar
unknown committed
2570
      DBUG_RETURN(ndb_err(trans));
2571
    }
2572
    m_ops_pending= 0;
unknown's avatar
unknown committed
2573 2574
  }
  
unknown's avatar
unknown committed
2575
  cursor->close(m_force_send);
unknown's avatar
unknown committed
2576
  m_active_cursor= m_multi_cursor= NULL;
unknown's avatar
unknown committed
2577
  DBUG_RETURN(0);
2578
}
unknown's avatar
unknown committed
2579 2580 2581 2582

int ha_ndbcluster::rnd_end()
{
  DBUG_ENTER("rnd_end");
2583
  DBUG_RETURN(close_scan());
unknown's avatar
unknown committed
2584 2585 2586 2587 2588 2589
}


int ha_ndbcluster::rnd_next(byte *buf)
{
  DBUG_ENTER("rnd_next");
unknown's avatar
unknown committed
2590 2591
  statistic_increment(current_thd->status_var.ha_read_rnd_next_count,
		      &LOCK_status);
2592

unknown's avatar
unknown committed
2593
  if (!m_active_cursor)
2594 2595
    DBUG_RETURN(full_table_scan(buf));
  DBUG_RETURN(next_result(buf));
unknown's avatar
unknown committed
2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608
}


/*
  An "interesting" record has been found and it's pk 
  retrieved by calling position
  Now it's time to read the record from db once 
  again
*/

int ha_ndbcluster::rnd_pos(byte *buf, byte *pos)
{
  DBUG_ENTER("rnd_pos");
unknown's avatar
unknown committed
2609 2610
  statistic_increment(current_thd->status_var.ha_read_rnd_count,
		      &LOCK_status);
unknown's avatar
unknown committed
2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657
  // The primary key for the record is stored in pos
  // Perform a pk_read using primary key "index"
  DBUG_RETURN(pk_read(pos, ref_length, buf));  
}


/*
  Store the primary key of this record in ref 
  variable, so that the row can be retrieved again later
  using "reference" in rnd_pos
*/

void ha_ndbcluster::position(const byte *record)
{
  KEY *key_info;
  KEY_PART_INFO *key_part;
  KEY_PART_INFO *end;
  byte *buff;
  DBUG_ENTER("position");

  if (table->primary_key != MAX_KEY) 
  {
    key_info= table->key_info + table->primary_key;
    key_part= key_info->key_part;
    end= key_part + key_info->key_parts;
    buff= ref;
    
    for (; key_part != end; key_part++) 
    {
      if (key_part->null_bit) {
        /* Store 0 if the key part is a NULL part */      
        if (record[key_part->null_offset]
            & key_part->null_bit) {
          *buff++= 1;
          continue;
        }      
        *buff++= 0;
      }
      memcpy(buff, record + key_part->offset, key_part->length);
      buff += key_part->length;
    }
  } 
  else 
  {
    // No primary key, get hidden key
    DBUG_PRINT("info", ("Getting hidden key"));
    int hidden_no= table->fields;
2658
    const NdbRecAttr* rec= m_value[hidden_no].rec;
unknown's avatar
unknown committed
2659
    const NDBTAB *tab= (const NDBTAB *) m_table;  
unknown's avatar
unknown committed
2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684
    const NDBCOL *hidden_col= tab->getColumn(hidden_no);
    DBUG_ASSERT(hidden_col->getPrimaryKey() && 
                hidden_col->getAutoIncrement() &&
                rec != NULL && 
                ref_length == NDB_HIDDEN_PRIMARY_KEY_LENGTH);
    memcpy(ref, (const void*)rec->aRef(), ref_length);
  }
  
  DBUG_DUMP("ref", (char*)ref, ref_length);
  DBUG_VOID_RETURN;
}


void ha_ndbcluster::info(uint flag)
{
  DBUG_ENTER("info");
  DBUG_PRINT("enter", ("flag: %d", flag));
  
  if (flag & HA_STATUS_POS)
    DBUG_PRINT("info", ("HA_STATUS_POS"));
  if (flag & HA_STATUS_NO_LOCK)
    DBUG_PRINT("info", ("HA_STATUS_NO_LOCK"));
  if (flag & HA_STATUS_TIME)
    DBUG_PRINT("info", ("HA_STATUS_TIME"));
  if (flag & HA_STATUS_VARIABLE)
2685
  {
unknown's avatar
unknown committed
2686
    DBUG_PRINT("info", ("HA_STATUS_VARIABLE"));
2687 2688
    if (m_table_info)
    {
2689 2690 2691 2692
      if (m_ha_not_exact_count)
	records= 100;
      else
	records_update();
2693 2694 2695
    }
    else
    {
2696 2697 2698 2699
      Uint64 rows= 100;
      if (current_thd->variables.ndb_use_exact_count)
	ndb_get_table_statistics(m_ndb, m_tabname, &rows, 0);
      records= rows;
2700
    }
2701
  }
unknown's avatar
unknown committed
2702 2703 2704 2705 2706
  if (flag & HA_STATUS_CONST)
  {
    DBUG_PRINT("info", ("HA_STATUS_CONST"));
    set_rec_per_key();
  }
unknown's avatar
unknown committed
2707
  if (flag & HA_STATUS_ERRKEY)
2708
  {
unknown's avatar
unknown committed
2709
    DBUG_PRINT("info", ("HA_STATUS_ERRKEY"));
2710
    errkey= m_dupkey;
2711
  }
unknown's avatar
unknown committed
2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798
  if (flag & HA_STATUS_AUTO)
    DBUG_PRINT("info", ("HA_STATUS_AUTO"));
  DBUG_VOID_RETURN;
}


int ha_ndbcluster::extra(enum ha_extra_function operation)
{
  DBUG_ENTER("extra");
  switch (operation) {
  case HA_EXTRA_NORMAL:              /* Optimize for space (def) */
    DBUG_PRINT("info", ("HA_EXTRA_NORMAL"));
    break;
  case HA_EXTRA_QUICK:                 /* Optimize for speed */
    DBUG_PRINT("info", ("HA_EXTRA_QUICK"));
    break;
  case HA_EXTRA_RESET:                 /* Reset database to after open */
    DBUG_PRINT("info", ("HA_EXTRA_RESET"));
    break;
  case HA_EXTRA_CACHE:                 /* Cash record in HA_rrnd() */
    DBUG_PRINT("info", ("HA_EXTRA_CACHE"));
    break;
  case HA_EXTRA_NO_CACHE:              /* End cacheing of records (def) */
    DBUG_PRINT("info", ("HA_EXTRA_NO_CACHE"));
    break;
  case HA_EXTRA_NO_READCHECK:          /* No readcheck on update */
    DBUG_PRINT("info", ("HA_EXTRA_NO_READCHECK"));
    break;
  case HA_EXTRA_READCHECK:             /* Use readcheck (def) */
    DBUG_PRINT("info", ("HA_EXTRA_READCHECK"));
    break;
  case HA_EXTRA_KEYREAD:               /* Read only key to database */
    DBUG_PRINT("info", ("HA_EXTRA_KEYREAD"));
    break;
  case HA_EXTRA_NO_KEYREAD:            /* Normal read of records (def) */
    DBUG_PRINT("info", ("HA_EXTRA_NO_KEYREAD"));
    break;
  case HA_EXTRA_NO_USER_CHANGE:        /* No user is allowed to write */
    DBUG_PRINT("info", ("HA_EXTRA_NO_USER_CHANGE"));
    break;
  case HA_EXTRA_KEY_CACHE:
    DBUG_PRINT("info", ("HA_EXTRA_KEY_CACHE"));
    break;
  case HA_EXTRA_NO_KEY_CACHE:
    DBUG_PRINT("info", ("HA_EXTRA_NO_KEY_CACHE"));
    break;
  case HA_EXTRA_WAIT_LOCK:            /* Wait until file is avalably (def) */
    DBUG_PRINT("info", ("HA_EXTRA_WAIT_LOCK"));
    break;
  case HA_EXTRA_NO_WAIT_LOCK:         /* If file is locked, return quickly */
    DBUG_PRINT("info", ("HA_EXTRA_NO_WAIT_LOCK"));
    break;
  case HA_EXTRA_WRITE_CACHE:           /* Use write cache in ha_write() */
    DBUG_PRINT("info", ("HA_EXTRA_WRITE_CACHE"));
    break;
  case HA_EXTRA_FLUSH_CACHE:           /* flush write_record_cache */
    DBUG_PRINT("info", ("HA_EXTRA_FLUSH_CACHE"));
    break;
  case HA_EXTRA_NO_KEYS:               /* Remove all update of keys */
    DBUG_PRINT("info", ("HA_EXTRA_NO_KEYS"));
    break;
  case HA_EXTRA_KEYREAD_CHANGE_POS:         /* Keyread, but change pos */
    DBUG_PRINT("info", ("HA_EXTRA_KEYREAD_CHANGE_POS")); /* xxxxchk -r must be used */
    break;                                  
  case HA_EXTRA_REMEMBER_POS:          /* Remember pos for next/prev */
    DBUG_PRINT("info", ("HA_EXTRA_REMEMBER_POS"));
    break;
  case HA_EXTRA_RESTORE_POS:
    DBUG_PRINT("info", ("HA_EXTRA_RESTORE_POS"));
    break;
  case HA_EXTRA_REINIT_CACHE:          /* init cache from current record */
    DBUG_PRINT("info", ("HA_EXTRA_REINIT_CACHE"));
    break;
  case HA_EXTRA_FORCE_REOPEN:          /* Datafile have changed on disk */
    DBUG_PRINT("info", ("HA_EXTRA_FORCE_REOPEN"));
    break;
  case HA_EXTRA_FLUSH:                 /* Flush tables to disk */
    DBUG_PRINT("info", ("HA_EXTRA_FLUSH"));
    break;
  case HA_EXTRA_NO_ROWS:               /* Don't write rows */
    DBUG_PRINT("info", ("HA_EXTRA_NO_ROWS"));
    break;
  case HA_EXTRA_RESET_STATE:           /* Reset positions */
    DBUG_PRINT("info", ("HA_EXTRA_RESET_STATE"));
    break;
  case HA_EXTRA_IGNORE_DUP_KEY:       /* Dup keys don't rollback everything*/
    DBUG_PRINT("info", ("HA_EXTRA_IGNORE_DUP_KEY"));
2799 2800 2801 2802 2803 2804
    if (current_thd->lex->sql_command == SQLCOM_REPLACE)
    {
      DBUG_PRINT("info", ("Turning ON use of write instead of insert"));
      m_use_write= TRUE;
    } else 
    {
2805 2806
      DBUG_PRINT("info", ("Ignoring duplicate key"));
      m_ignore_dup_key= TRUE;
2807
    }
unknown's avatar
unknown committed
2808 2809 2810 2811
    break;
  case HA_EXTRA_NO_IGNORE_DUP_KEY:
    DBUG_PRINT("info", ("HA_EXTRA_NO_IGNORE_DUP_KEY"));
    DBUG_PRINT("info", ("Turning OFF use of write instead of insert"));
unknown's avatar
unknown committed
2812
    m_use_write= FALSE;
2813
    m_ignore_dup_key= FALSE;
unknown's avatar
unknown committed
2814 2815 2816 2817 2818
    break;
  case HA_EXTRA_RETRIEVE_ALL_COLS:    /* Retrieve all columns, not just those
					 where field->query_id is the same as
					 the current query id */
    DBUG_PRINT("info", ("HA_EXTRA_RETRIEVE_ALL_COLS"));
2819
    m_retrieve_all_fields= TRUE;
unknown's avatar
unknown committed
2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831
    break;
  case HA_EXTRA_PREPARE_FOR_DELETE:
    DBUG_PRINT("info", ("HA_EXTRA_PREPARE_FOR_DELETE"));
    break;
  case HA_EXTRA_PREPARE_FOR_UPDATE:     /* Remove read cache if problems */
    DBUG_PRINT("info", ("HA_EXTRA_PREPARE_FOR_UPDATE"));
    break;
  case HA_EXTRA_PRELOAD_BUFFER_SIZE: 
    DBUG_PRINT("info", ("HA_EXTRA_PRELOAD_BUFFER_SIZE"));
    break;
  case HA_EXTRA_RETRIEVE_PRIMARY_KEY: 
    DBUG_PRINT("info", ("HA_EXTRA_RETRIEVE_PRIMARY_KEY"));
2832
    m_retrieve_primary_key= TRUE;
unknown's avatar
unknown committed
2833 2834 2835 2836 2837 2838
    break;
  case HA_EXTRA_CHANGE_KEY_TO_UNIQUE: 
    DBUG_PRINT("info", ("HA_EXTRA_CHANGE_KEY_TO_UNIQUE"));
    break;
  case HA_EXTRA_CHANGE_KEY_TO_DUP: 
    DBUG_PRINT("info", ("HA_EXTRA_CHANGE_KEY_TO_DUP"));
2839 2840
  case HA_EXTRA_KEYREAD_PRESERVE_FIELDS:
    DBUG_PRINT("info", ("HA_EXTRA_KEYREAD_PRESERVE_FIELDS"));
unknown's avatar
unknown committed
2841 2842 2843 2844 2845 2846 2847
    break;

  }
  
  DBUG_RETURN(0);
}

2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860
/* 
   Start of an insert, remember number of rows to be inserted, it will
   be used in write_row and get_autoincrement to send an optimal number
   of rows in each roundtrip to the server

   SYNOPSIS
   rows     number of rows to insert, 0 if unknown

*/

void ha_ndbcluster::start_bulk_insert(ha_rows rows)
{
  int bytes, batch;
unknown's avatar
unknown committed
2861
  const NDBTAB *tab= (const NDBTAB *) m_table;    
2862 2863

  DBUG_ENTER("start_bulk_insert");
unknown's avatar
unknown committed
2864
  DBUG_PRINT("enter", ("rows: %d", (int)rows));
2865
  
2866 2867
  m_rows_inserted= 0;
  m_rows_to_insert= rows; 
2868 2869 2870 2871 2872 2873 2874 2875

  /* 
    Calculate how many rows that should be inserted
    per roundtrip to NDB. This is done in order to minimize the 
    number of roundtrips as much as possible. However performance will 
    degrade if too many bytes are inserted, thus it's limited by this 
    calculation.   
  */
2876
  const int bytesperbatch= 8192;
2877
  bytes= 12 + tab->getRowSizeInBytes() + 4 * tab->getNoOfColumns();
2878
  batch= bytesperbatch/bytes;
2879 2880
  batch= batch == 0 ? 1 : batch;
  DBUG_PRINT("info", ("batch: %d, bytes: %d", batch, bytes));
2881
  m_bulk_insert_rows= batch;
2882 2883 2884 2885 2886 2887 2888 2889 2890

  DBUG_VOID_RETURN;
}

/*
  End of an insert
 */
int ha_ndbcluster::end_bulk_insert()
{
2891 2892
  int error= 0;

2893
  DBUG_ENTER("end_bulk_insert");
2894
  // Check if last inserts need to be flushed
2895
  if (m_bulk_insert_not_flushed)
2896 2897 2898 2899 2900
  {
    NdbConnection *trans= m_active_trans;
    // Send rows to NDB
    DBUG_PRINT("info", ("Sending inserts to NDB, "\
                        "rows_inserted:%d, bulk_insert_rows: %d", 
2901 2902
                        m_rows_inserted, m_bulk_insert_rows)); 
    m_bulk_insert_not_flushed= FALSE;
unknown's avatar
unknown committed
2903
    if (execute_no_commit(this,trans) != 0) {
2904
      no_uncommitted_rows_execute_failure();
2905
      my_errno= error= ndb_err(trans);
2906
    }
2907 2908
  }

2909 2910
  m_rows_inserted= 0;
  m_rows_to_insert= 1;
2911
  DBUG_RETURN(error);
2912 2913
}

unknown's avatar
unknown committed
2914 2915 2916 2917

int ha_ndbcluster::extra_opt(enum ha_extra_function operation, ulong cache_size)
{
  DBUG_ENTER("extra_opt");
unknown's avatar
unknown committed
2918
  DBUG_PRINT("enter", ("cache_size: %lu", cache_size));
unknown's avatar
unknown committed
2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931
  DBUG_RETURN(extra(operation));
}


int ha_ndbcluster::reset()
{
  DBUG_ENTER("reset");
  // Reset what?
  DBUG_RETURN(1);
}


const char **ha_ndbcluster::bas_ext() const
2932
{ static const char *ext[]= { ha_ndb_ext, NullS }; return ext; }
unknown's avatar
unknown committed
2933 2934 2935 2936 2937 2938 2939 2940 2941 2942


/*
  How many seeks it will take to read through the table
  This is to be comparable to the number returned by records_in_range so
  that we can decide if we should scan the table or use keys.
*/

double ha_ndbcluster::scan_time()
{
unknown's avatar
unknown committed
2943 2944 2945 2946 2947
  DBUG_ENTER("ha_ndbcluster::scan_time()");
  double res= rows2double(records*1000);
  DBUG_PRINT("exit", ("table: %s value: %f", 
		      m_tabname, res));
  DBUG_RETURN(res);
unknown's avatar
unknown committed
2948 2949 2950 2951 2952 2953 2954 2955 2956 2957
}


THR_LOCK_DATA **ha_ndbcluster::store_lock(THD *thd,
                                          THR_LOCK_DATA **to,
                                          enum thr_lock_type lock_type)
{
  DBUG_ENTER("store_lock");
  if (lock_type != TL_IGNORE && m_lock.type == TL_UNLOCK) 
  {
unknown's avatar
unknown committed
2958

unknown's avatar
unknown committed
2959 2960 2961
    /* If we are not doing a LOCK TABLE, then allow multiple
       writers */
    
2962 2963 2964
    /* Since NDB does not currently have table locks
       this is treated as a ordinary lock */

unknown's avatar
unknown committed
2965
    if ((lock_type >= TL_WRITE_ALLOW_WRITE &&
unknown's avatar
unknown committed
2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980
         lock_type <= TL_WRITE) && !thd->in_lock_tables)      
      lock_type= TL_WRITE_ALLOW_WRITE;
    
    /* In queries of type INSERT INTO t1 SELECT ... FROM t2 ...
       MySQL would use the lock TL_READ_NO_INSERT on t2, and that
       would conflict with TL_WRITE_ALLOW_WRITE, blocking all inserts
       to t2. Convert the lock to a normal read lock to allow
       concurrent inserts to t2. */
    
    if (lock_type == TL_READ_NO_INSERT && !thd->in_lock_tables)
      lock_type= TL_READ;
    
    m_lock.type=lock_type;
  }
  *to++= &m_lock;
2981 2982

  DBUG_PRINT("exit", ("lock_type: %d", lock_type));
unknown's avatar
unknown committed
2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025
  
  DBUG_RETURN(to);
}

#ifndef DBUG_OFF
#define PRINT_OPTION_FLAGS(t) { \
      if (t->options & OPTION_NOT_AUTOCOMMIT) \
        DBUG_PRINT("thd->options", ("OPTION_NOT_AUTOCOMMIT")); \
      if (t->options & OPTION_BEGIN) \
        DBUG_PRINT("thd->options", ("OPTION_BEGIN")); \
      if (t->options & OPTION_TABLE_LOCK) \
        DBUG_PRINT("thd->options", ("OPTION_TABLE_LOCK")); \
}
#else
#define PRINT_OPTION_FLAGS(t)
#endif


/*
  As MySQL will execute an external lock for every new table it uses
  we can use this to start the transactions.
  If we are in auto_commit mode we just need to start a transaction
  for the statement, this will be stored in transaction.stmt.
  If not, we have to start a master transaction if there doesn't exist
  one from before, this will be stored in transaction.all
 
  When a table lock is held one transaction will be started which holds
  the table lock and for each statement a hupp transaction will be started  
 */

int ha_ndbcluster::external_lock(THD *thd, int lock_type)
{
  int error=0;
  NdbConnection* trans= NULL;

  DBUG_ENTER("external_lock");
  /*
    Check that this handler instance has a connection
    set up to the Ndb object of thd
   */
  if (check_ndb_connection())
    DBUG_RETURN(1);
 
3026 3027 3028 3029 3030
  Thd_ndb *thd_ndb= (Thd_ndb*)thd->transaction.thd_ndb;

  DBUG_PRINT("enter", ("transaction.thd_ndb->lock_count: %d", 
                       thd_ndb->lock_count));

unknown's avatar
unknown committed
3031 3032
  if (lock_type != F_UNLCK)
  {
3033
    DBUG_PRINT("info", ("lock_type != F_UNLCK"));
3034
    if (!thd_ndb->lock_count++)
unknown's avatar
unknown committed
3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046
    {
      PRINT_OPTION_FLAGS(thd);

      if (!(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN | OPTION_TABLE_LOCK))) 
      {
        // Autocommit transaction
        DBUG_ASSERT(!thd->transaction.stmt.ndb_tid);
        DBUG_PRINT("trans",("Starting transaction stmt"));      

        trans= m_ndb->startTransaction();
        if (trans == NULL)
          ERR_RETURN(m_ndb->getNdbError());
3047
	no_uncommitted_rows_reset(thd);
unknown's avatar
unknown committed
3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060
        thd->transaction.stmt.ndb_tid= trans;
      } 
      else 
      { 
        if (!thd->transaction.all.ndb_tid)
	{
          // Not autocommit transaction
          // A "master" transaction ha not been started yet
          DBUG_PRINT("trans",("starting transaction, all"));
          
          trans= m_ndb->startTransaction();
          if (trans == NULL)
            ERR_RETURN(m_ndb->getNdbError());
3061
	  no_uncommitted_rows_reset(thd);
unknown's avatar
unknown committed
3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090

          /*
            If this is the start of a LOCK TABLE, a table look 
            should be taken on the table in NDB
           
            Check if it should be read or write lock
           */
          if (thd->options & (OPTION_TABLE_LOCK))
	  {
            //lockThisTable();
            DBUG_PRINT("info", ("Locking the table..." ));
          }

          thd->transaction.all.ndb_tid= trans; 
        }
      }
    }
    /*
      This is the place to make sure this handler instance
      has a started transaction.
     
      The transaction is started by the first handler on which 
      MySQL Server calls external lock
     
      Other handlers in the same stmt or transaction should use 
      the same NDB transaction. This is done by setting up the m_active_trans
      pointer to point to the NDB transaction. 
     */

3091 3092 3093 3094 3095 3096 3097 3098
    // store thread specific data first to set the right context
    m_force_send=          thd->variables.ndb_force_send;
    m_ha_not_exact_count= !thd->variables.ndb_use_exact_count;
    m_autoincrement_prefetch= thd->variables.ndb_autoincrement_prefetch_sz;
    if (!thd->transaction.on)
      m_transaction_on= FALSE;
    else
      m_transaction_on= thd->variables.ndb_use_transactions;
unknown's avatar
unknown committed
3099
    //     m_use_local_query_cache= thd->variables.ndb_use_local_query_cache;
3100

unknown's avatar
unknown committed
3101 3102 3103 3104
    m_active_trans= thd->transaction.all.ndb_tid ? 
      (NdbConnection*)thd->transaction.all.ndb_tid:
      (NdbConnection*)thd->transaction.stmt.ndb_tid;
    DBUG_ASSERT(m_active_trans);
3105
    // Start of transaction
3106
    m_retrieve_all_fields= FALSE;
3107
    m_retrieve_primary_key= FALSE;
3108
    m_ops_pending= 0;    
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118
    {
      NDBDICT *dict= m_ndb->getDictionary();
      const NDBTAB *tab;
      void *tab_info;
      if (!(tab= dict->getTable(m_tabname, &tab_info)))
	ERR_RETURN(dict->getNdbError());
      DBUG_PRINT("info", ("Table schema version: %d", tab->getObjectVersion()));
      m_table= (void *)tab;
      m_table_info= tab_info;
    }
3119
    no_uncommitted_rows_init(thd);
unknown's avatar
unknown committed
3120 3121 3122
  } 
  else 
  {
3123
    DBUG_PRINT("info", ("lock_type == F_UNLCK"));
3124
    if (!--thd_ndb->lock_count)
unknown's avatar
unknown committed
3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140
    {
      DBUG_PRINT("trans", ("Last external_lock"));
      PRINT_OPTION_FLAGS(thd);

      if (thd->transaction.stmt.ndb_tid)
      {
        /*
          Unlock is done without a transaction commit / rollback.
          This happens if the thread didn't update any rows
          We must in this case close the transaction to release resources
        */
        DBUG_PRINT("trans",("ending non-updating transaction"));
        m_ndb->closeTransaction(m_active_trans);
        thd->transaction.stmt.ndb_tid= 0;
      }
    }
unknown's avatar
unknown committed
3141 3142
    m_table= NULL;
    m_table_info= NULL;
3143 3144 3145 3146 3147 3148 3149 3150 3151
    /*
      This is the place to make sure this handler instance
      no longer are connected to the active transaction.

      And since the handler is no longer part of the transaction 
      it can't have open cursors, ops or blobs pending.
    */
    m_active_trans= NULL;    

3152 3153
    if (m_active_cursor)
      DBUG_PRINT("warning", ("m_active_cursor != NULL"));
3154 3155
    m_active_cursor= NULL;

unknown's avatar
unknown committed
3156 3157 3158 3159
    if (m_multi_cursor)
      DBUG_PRINT("warning", ("m_multi_cursor != NULL"));
    m_multi_cursor= NULL;
    
3160
    if (m_blobs_pending)
3161
      DBUG_PRINT("warning", ("blobs_pending != 0"));
3162
    m_blobs_pending= 0;
3163
    
3164
    if (m_ops_pending)
3165
      DBUG_PRINT("warning", ("ops_pending != 0L"));
3166
    m_ops_pending= 0;
unknown's avatar
unknown committed
3167 3168 3169 3170 3171 3172 3173 3174
  }
  DBUG_RETURN(error);
}

/*
  When using LOCK TABLE's external_lock is only called when the actual
  TABLE LOCK is done.
  Under LOCK TABLES, each used tables will force a call to start_stmt.
unknown's avatar
unknown committed
3175 3176
  Ndb doesn't currently support table locks, and will do ordinary
  startTransaction for each transaction/statement.
unknown's avatar
unknown committed
3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190
*/

int ha_ndbcluster::start_stmt(THD *thd)
{
  int error=0;
  DBUG_ENTER("start_stmt");
  PRINT_OPTION_FLAGS(thd);

  NdbConnection *trans= (NdbConnection*)thd->transaction.stmt.ndb_tid;
  if (!trans){
    DBUG_PRINT("trans",("Starting transaction stmt"));  
    
    NdbConnection *tablock_trans= 
      (NdbConnection*)thd->transaction.all.ndb_tid;
unknown's avatar
unknown committed
3191
    DBUG_PRINT("info", ("tablock_trans: %x", (uint)tablock_trans));
unknown's avatar
unknown committed
3192 3193 3194
    DBUG_ASSERT(tablock_trans);
//    trans= m_ndb->hupp(tablock_trans);
    trans= m_ndb->startTransaction();
unknown's avatar
unknown committed
3195 3196
    if (trans == NULL)
      ERR_RETURN(m_ndb->getNdbError());
3197
    no_uncommitted_rows_reset(thd);
unknown's avatar
unknown committed
3198 3199 3200
    thd->transaction.stmt.ndb_tid= trans;
  }
  m_active_trans= trans;
3201

3202
  // Start of statement
3203
  m_retrieve_all_fields= FALSE;
3204
  m_retrieve_primary_key= FALSE;
3205
  m_ops_pending= 0;    
unknown's avatar
unknown committed
3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217
  
  DBUG_RETURN(error);
}


/*
  Commit a transaction started in NDB 
 */

int ndbcluster_commit(THD *thd, void *ndb_transaction)
{
  int res= 0;
3218
  Ndb *ndb= ((Thd_ndb*)thd->transaction.thd_ndb)->ndb;
unknown's avatar
unknown committed
3219 3220 3221 3222 3223 3224 3225 3226
  NdbConnection *trans= (NdbConnection*)ndb_transaction;

  DBUG_ENTER("ndbcluster_commit");
  DBUG_PRINT("transaction",("%s",
                            trans == thd->transaction.stmt.ndb_tid ? 
                            "stmt" : "all"));
  DBUG_ASSERT(ndb && trans);

3227
  if (execute_commit(thd,trans) != 0)
unknown's avatar
unknown committed
3228 3229
  {
    const NdbError err= trans->getNdbError();
3230
    const NdbOperation *error_op= trans->getNdbErrorOperation();
unknown's avatar
unknown committed
3231 3232
    ERR_PRINT(err);     
    res= ndb_to_mysql_error(&err);
3233
    if (res != -1) 
3234
      ndbcluster_print_error(res, error_op);
unknown's avatar
unknown committed
3235
  }
3236
  ndb->closeTransaction(trans);
unknown's avatar
unknown committed
3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
  DBUG_RETURN(res);
}


/*
  Rollback a transaction started in NDB
 */

int ndbcluster_rollback(THD *thd, void *ndb_transaction)
{
  int res= 0;
3248
  Ndb *ndb= ((Thd_ndb*)thd->transaction.thd_ndb)->ndb;
unknown's avatar
unknown committed
3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259
  NdbConnection *trans= (NdbConnection*)ndb_transaction;

  DBUG_ENTER("ndbcluster_rollback");
  DBUG_PRINT("transaction",("%s",
                            trans == thd->transaction.stmt.ndb_tid ? 
                            "stmt" : "all"));
  DBUG_ASSERT(ndb && trans);

  if (trans->execute(Rollback) != 0)
  {
    const NdbError err= trans->getNdbError();
3260
    const NdbOperation *error_op= trans->getNdbErrorOperation();
unknown's avatar
unknown committed
3261 3262
    ERR_PRINT(err);     
    res= ndb_to_mysql_error(&err);
3263 3264
    if (res != -1) 
      ndbcluster_print_error(res, error_op);
unknown's avatar
unknown committed
3265 3266 3267 3268 3269 3270 3271
  }
  ndb->closeTransaction(trans);
  DBUG_RETURN(0);
}


/*
unknown's avatar
unknown committed
3272 3273 3274
  Define NDB column based on Field.
  Returns 0 or mysql error code.
  Not member of ha_ndbcluster because NDBCOL cannot be declared.
unknown's avatar
unknown committed
3275 3276
 */

unknown's avatar
unknown committed
3277 3278 3279
static int create_ndb_column(NDBCOL &col,
                             Field *field,
                             HA_CREATE_INFO *info)
unknown's avatar
unknown committed
3280
{
unknown's avatar
unknown committed
3281
  // Set name
3282 3283 3284 3285 3286 3287
  {
    char truncated_field_name[NDB_MAX_ATTR_NAME_SIZE];
    strnmov(truncated_field_name,field->field_name,sizeof(truncated_field_name));
    truncated_field_name[sizeof(truncated_field_name)-1]= '\0';
    col.setName(truncated_field_name);
  }
unknown's avatar
unknown committed
3288 3289
  // Get char set
  CHARSET_INFO *cs= field->charset();
unknown's avatar
unknown committed
3290 3291 3292 3293
  // Set type and sizes
  const enum enum_field_types mysql_type= field->real_type();
  switch (mysql_type) {
  // Numeric types
unknown's avatar
unknown committed
3294
  case MYSQL_TYPE_DECIMAL:    
unknown's avatar
unknown committed
3295 3296 3297
    col.setType(NDBCOL::Char);
    col.setLength(field->pack_length());
    break;
unknown's avatar
unknown committed
3298
  case MYSQL_TYPE_TINY:        
unknown's avatar
unknown committed
3299 3300 3301 3302 3303 3304
    if (field->flags & UNSIGNED_FLAG)
      col.setType(NDBCOL::Tinyunsigned);
    else
      col.setType(NDBCOL::Tinyint);
    col.setLength(1);
    break;
unknown's avatar
unknown committed
3305
  case MYSQL_TYPE_SHORT:
unknown's avatar
unknown committed
3306 3307 3308 3309 3310 3311
    if (field->flags & UNSIGNED_FLAG)
      col.setType(NDBCOL::Smallunsigned);
    else
      col.setType(NDBCOL::Smallint);
    col.setLength(1);
    break;
unknown's avatar
unknown committed
3312
  case MYSQL_TYPE_LONG:
unknown's avatar
unknown committed
3313 3314 3315 3316 3317 3318
    if (field->flags & UNSIGNED_FLAG)
      col.setType(NDBCOL::Unsigned);
    else
      col.setType(NDBCOL::Int);
    col.setLength(1);
    break;
unknown's avatar
unknown committed
3319
  case MYSQL_TYPE_INT24:       
unknown's avatar
unknown committed
3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331
    if (field->flags & UNSIGNED_FLAG)
      col.setType(NDBCOL::Mediumunsigned);
    else
      col.setType(NDBCOL::Mediumint);
    col.setLength(1);
    break;
  case MYSQL_TYPE_LONGLONG:
    if (field->flags & UNSIGNED_FLAG)
      col.setType(NDBCOL::Bigunsigned);
    else
      col.setType(NDBCOL::Bigint);
    col.setLength(1);
unknown's avatar
unknown committed
3332 3333
    break;
  case MYSQL_TYPE_FLOAT:
unknown's avatar
unknown committed
3334 3335 3336
    col.setType(NDBCOL::Float);
    col.setLength(1);
    break;
unknown's avatar
unknown committed
3337
  case MYSQL_TYPE_DOUBLE:
unknown's avatar
unknown committed
3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358
    col.setType(NDBCOL::Double);
    col.setLength(1);
    break;
  // Date types
  case MYSQL_TYPE_TIMESTAMP:
    col.setType(NDBCOL::Unsigned);
    col.setLength(1);
    break;
  case MYSQL_TYPE_DATETIME:    
    col.setType(NDBCOL::Datetime);
    col.setLength(1);
    break;
  case MYSQL_TYPE_DATE:
  case MYSQL_TYPE_NEWDATE:
  case MYSQL_TYPE_TIME:        
  case MYSQL_TYPE_YEAR:        
    col.setType(NDBCOL::Char);
    col.setLength(field->pack_length());
    break;
  // Char types
  case MYSQL_TYPE_STRING:      
3359
    if (field->pack_length() == 0)
3360 3361 3362 3363
    {
      col.setType(NDBCOL::Bit);
      col.setLength(1);
    }
unknown's avatar
unknown committed
3364 3365
    else if (field->flags & BINARY_FLAG)
    {
unknown's avatar
unknown committed
3366
      col.setType(NDBCOL::Binary);
unknown's avatar
unknown committed
3367
      col.setLength(field->pack_length());
unknown's avatar
unknown committed
3368
    }
3369
    else
unknown's avatar
unknown committed
3370 3371 3372
    {
      col.setType(NDBCOL::Char);
      col.setCharset(cs);
3373
      col.setLength(field->pack_length());
unknown's avatar
unknown committed
3374
    }
unknown's avatar
unknown committed
3375 3376 3377 3378
    break;
  case MYSQL_TYPE_VAR_STRING:
    if (field->flags & BINARY_FLAG)
      col.setType(NDBCOL::Varbinary);
unknown's avatar
unknown committed
3379
    else {
unknown's avatar
unknown committed
3380
      col.setType(NDBCOL::Varchar);
unknown's avatar
unknown committed
3381 3382
      col.setCharset(cs);
    }
unknown's avatar
unknown committed
3383 3384 3385 3386 3387 3388 3389
    col.setLength(field->pack_length());
    break;
  // Blob types (all come in as MYSQL_TYPE_BLOB)
  mysql_type_tiny_blob:
  case MYSQL_TYPE_TINY_BLOB:
    if (field->flags & BINARY_FLAG)
      col.setType(NDBCOL::Blob);
unknown's avatar
unknown committed
3390
    else {
unknown's avatar
unknown committed
3391
      col.setType(NDBCOL::Text);
unknown's avatar
unknown committed
3392 3393
      col.setCharset(cs);
    }
unknown's avatar
unknown committed
3394 3395 3396 3397 3398
    col.setInlineSize(256);
    // No parts
    col.setPartSize(0);
    col.setStripeSize(0);
    break;
3399
  //mysql_type_blob:
unknown's avatar
unknown committed
3400 3401 3402
  case MYSQL_TYPE_BLOB:    
    if (field->flags & BINARY_FLAG)
      col.setType(NDBCOL::Blob);
unknown's avatar
unknown committed
3403
    else {
unknown's avatar
unknown committed
3404
      col.setType(NDBCOL::Text);
unknown's avatar
unknown committed
3405 3406
      col.setCharset(cs);
    }
unknown's avatar
unknown committed
3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
    // Use "<=" even if "<" is the exact condition
    if (field->max_length() <= (1 << 8))
      goto mysql_type_tiny_blob;
    else if (field->max_length() <= (1 << 16))
    {
      col.setInlineSize(256);
      col.setPartSize(2000);
      col.setStripeSize(16);
    }
    else if (field->max_length() <= (1 << 24))
      goto mysql_type_medium_blob;
    else
      goto mysql_type_long_blob;
    break;
  mysql_type_medium_blob:
  case MYSQL_TYPE_MEDIUM_BLOB:   
    if (field->flags & BINARY_FLAG)
      col.setType(NDBCOL::Blob);
unknown's avatar
unknown committed
3425
    else {
unknown's avatar
unknown committed
3426
      col.setType(NDBCOL::Text);
unknown's avatar
unknown committed
3427 3428
      col.setCharset(cs);
    }
unknown's avatar
unknown committed
3429 3430 3431 3432 3433 3434 3435 3436
    col.setInlineSize(256);
    col.setPartSize(4000);
    col.setStripeSize(8);
    break;
  mysql_type_long_blob:
  case MYSQL_TYPE_LONG_BLOB:  
    if (field->flags & BINARY_FLAG)
      col.setType(NDBCOL::Blob);
unknown's avatar
unknown committed
3437
    else {
unknown's avatar
unknown committed
3438
      col.setType(NDBCOL::Text);
unknown's avatar
unknown committed
3439 3440
      col.setCharset(cs);
    }
unknown's avatar
unknown committed
3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459
    col.setInlineSize(256);
    col.setPartSize(8000);
    col.setStripeSize(4);
    break;
  // Other types
  case MYSQL_TYPE_ENUM:
    col.setType(NDBCOL::Char);
    col.setLength(field->pack_length());
    break;
  case MYSQL_TYPE_SET:         
    col.setType(NDBCOL::Char);
    col.setLength(field->pack_length());
    break;
  case MYSQL_TYPE_NULL:        
  case MYSQL_TYPE_GEOMETRY:
    goto mysql_type_unsupported;
  mysql_type_unsupported:
  default:
    return HA_ERR_UNSUPPORTED;
unknown's avatar
unknown committed
3460
  }
unknown's avatar
unknown committed
3461 3462 3463 3464 3465 3466 3467 3468
  // Set nullable and pk
  col.setNullable(field->maybe_null());
  col.setPrimaryKey(field->flags & PRI_KEY_FLAG);
  // Set autoincrement
  if (field->flags & AUTO_INCREMENT_FLAG) 
  {
    col.setAutoIncrement(TRUE);
    ulonglong value= info->auto_increment_value ?
3469
      info->auto_increment_value : (ulonglong) 1;
unknown's avatar
unknown committed
3470 3471
    DBUG_PRINT("info", ("Autoincrement key, initial: %llu", value));
    col.setAutoIncrementInitialValue(value);
unknown's avatar
unknown committed
3472
  }
unknown's avatar
unknown committed
3473
  else
unknown's avatar
unknown committed
3474
    col.setAutoIncrement(FALSE);
unknown's avatar
unknown committed
3475
  return 0;
unknown's avatar
unknown committed
3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487
}

/*
  Create a table in NDB Cluster
 */

int ha_ndbcluster::create(const char *name, 
			  TABLE *form, 
			  HA_CREATE_INFO *info)
{
  NDBTAB tab;
  NDBCOL col;
unknown's avatar
unknown committed
3488
  uint pack_length, length, i, pk_length= 0;
unknown's avatar
unknown committed
3489
  const void *data, *pack_data;
3490
  const char **key_names= form->keynames.type_names;
unknown's avatar
unknown committed
3491
  char name2[FN_HEADLEN];
3492
  bool create_from_engine= (info->table_options & HA_CREATE_FROM_ENGINE);
unknown's avatar
unknown committed
3493 3494 3495 3496 3497
   
  DBUG_ENTER("create");
  DBUG_PRINT("enter", ("name: %s", name));
  fn_format(name2, name, "", "",2);       // Remove the .frm extension
  set_dbname(name2);
3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509
  set_tabname(name2);    

  if (create_from_engine)
  {
    /*
      Table alreay exists in NDB and frm file has been created by 
      caller.
      Do Ndb specific stuff, such as create a .ndb file
    */
    my_errno= write_ndb_file();
    DBUG_RETURN(my_errno);
  }
unknown's avatar
unknown committed
3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531

  DBUG_PRINT("table", ("name: %s", m_tabname));  
  tab.setName(m_tabname);
  tab.setLogging(!(info->options & HA_LEX_CREATE_TMP_TABLE));    
   
  // Save frm data for this table
  if (readfrm(name, &data, &length))
    DBUG_RETURN(1);
  if (packfrm(data, length, &pack_data, &pack_length))
    DBUG_RETURN(2);
  
  DBUG_PRINT("info", ("setFrm data=%x, len=%d", pack_data, pack_length));
  tab.setFrm(pack_data, pack_length);      
  my_free((char*)data, MYF(0));
  my_free((char*)pack_data, MYF(0));
  
  for (i= 0; i < form->fields; i++) 
  {
    Field *field= form->field[i];
    DBUG_PRINT("info", ("name: %s, type: %u, pack_length: %d", 
                        field->field_name, field->real_type(),
			field->pack_length()));
3532
    if ((my_errno= create_ndb_column(col, field, info)))
unknown's avatar
unknown committed
3533
      DBUG_RETURN(my_errno);
unknown's avatar
unknown committed
3534
    tab.addColumn(col);
unknown's avatar
unknown committed
3535 3536
    if(col.getPrimaryKey())
      pk_length += (field->pack_length() + 3) / 4;
unknown's avatar
unknown committed
3537 3538 3539 3540 3541 3542 3543 3544 3545
  }
  
  // No primary key, create shadow key as 64 bit, auto increment  
  if (form->primary_key == MAX_KEY) 
  {
    DBUG_PRINT("info", ("Generating shadow key"));
    col.setName("$PK");
    col.setType(NdbDictionary::Column::Bigunsigned);
    col.setLength(1);
unknown's avatar
unknown committed
3546
    col.setNullable(FALSE);
unknown's avatar
unknown committed
3547 3548 3549
    col.setPrimaryKey(TRUE);
    col.setAutoIncrement(TRUE);
    tab.addColumn(col);
unknown's avatar
unknown committed
3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565
    pk_length += 2;
  }
  
  // Make sure that blob tables don't have to big part size
  for (i= 0; i < form->fields; i++) 
  {
    /**
     * The extra +7 concists
     * 2 - words from pk in blob table
     * 5 - from extra words added by tup/dict??
     */
    switch (form->field[i]->real_type()) {
    case MYSQL_TYPE_BLOB:    
    case MYSQL_TYPE_MEDIUM_BLOB:   
    case MYSQL_TYPE_LONG_BLOB: 
    {
3566 3567
      NdbDictionary::Column * col= tab.getColumn(i);
      int size= pk_length + (col->getPartSize()+3)/4 + 7;
unknown's avatar
unknown committed
3568 3569 3570
      if(size > NDB_MAX_TUPLE_SIZE_IN_WORDS && 
	 (pk_length+7) < NDB_MAX_TUPLE_SIZE_IN_WORDS)
      {
3571
	size= NDB_MAX_TUPLE_SIZE_IN_WORDS - pk_length - 7;
unknown's avatar
unknown committed
3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582
	col->setPartSize(4*size);
      }
      /**
       * If size > NDB_MAX and pk_length+7 >= NDB_MAX
       *   then the table can't be created anyway, so skip
       *   changing part size, and have error later
       */ 
    }
    default:
      break;
    }
unknown's avatar
unknown committed
3583 3584
  }
  
3585
  if ((my_errno= check_ndb_connection()))
unknown's avatar
unknown committed
3586 3587 3588 3589
    DBUG_RETURN(my_errno);
  
  // Create the table in NDB     
  NDBDICT *dict= m_ndb->getDictionary();
3590
  if (dict->createTable(tab) != 0) 
unknown's avatar
unknown committed
3591 3592 3593 3594 3595 3596 3597 3598
  {
    const NdbError err= dict->getNdbError();
    ERR_PRINT(err);
    my_errno= ndb_to_mysql_error(&err);
    DBUG_RETURN(my_errno);
  }
  DBUG_PRINT("info", ("Table %s/%s created successfully", 
                      m_dbname, m_tabname));
3599

unknown's avatar
unknown committed
3600 3601
  // Create secondary indexes
  my_errno= build_index_list(form, ILBP_CREATE);
3602

3603 3604 3605
  if (!my_errno)
    my_errno= write_ndb_file();

unknown's avatar
unknown committed
3606 3607 3608 3609
  DBUG_RETURN(my_errno);
}


3610 3611 3612 3613
int ha_ndbcluster::create_ordered_index(const char *name, 
					KEY *key_info)
{
  DBUG_ENTER("create_ordered_index");
unknown's avatar
unknown committed
3614
  DBUG_RETURN(create_index(name, key_info, FALSE));
3615 3616 3617 3618 3619 3620
}

int ha_ndbcluster::create_unique_index(const char *name, 
				       KEY *key_info)
{

3621
  DBUG_ENTER("create_unique_index");
unknown's avatar
unknown committed
3622
  DBUG_RETURN(create_index(name, key_info, TRUE));
3623 3624 3625
}


unknown's avatar
unknown committed
3626 3627 3628 3629 3630
/*
  Create an index in NDB Cluster
 */

int ha_ndbcluster::create_index(const char *name, 
3631 3632 3633
				KEY *key_info,
				bool unique)
{
unknown's avatar
unknown committed
3634 3635 3636 3637 3638 3639
  NdbDictionary::Dictionary *dict= m_ndb->getDictionary();
  KEY_PART_INFO *key_part= key_info->key_part;
  KEY_PART_INFO *end= key_part + key_info->key_parts;
  
  DBUG_ENTER("create_index");
  DBUG_PRINT("enter", ("name: %s ", name));
3640

unknown's avatar
unknown committed
3641
  NdbDictionary::Index ndb_index(name);
3642
  if (unique)
unknown's avatar
unknown committed
3643 3644 3645 3646 3647
    ndb_index.setType(NdbDictionary::Index::UniqueHashIndex);
  else 
  {
    ndb_index.setType(NdbDictionary::Index::OrderedIndex);
    // TODO Only temporary ordered indexes supported
unknown's avatar
unknown committed
3648
    ndb_index.setLogging(FALSE); 
unknown's avatar
unknown committed
3649 3650 3651 3652 3653 3654 3655
  }
  ndb_index.setTable(m_tabname);

  for (; key_part != end; key_part++) 
  {
    Field *field= key_part->field;
    DBUG_PRINT("info", ("attr: %s", field->field_name));
3656 3657 3658 3659 3660 3661
    {
      char truncated_field_name[NDB_MAX_ATTR_NAME_SIZE];
      strnmov(truncated_field_name,field->field_name,sizeof(truncated_field_name));
      truncated_field_name[sizeof(truncated_field_name)-1]= '\0';
      ndb_index.addColumnName(truncated_field_name);
    }
unknown's avatar
unknown committed
3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685
  }
  
  if (dict->createIndex(ndb_index))
    ERR_RETURN(dict->getNdbError());

  // Success
  DBUG_PRINT("info", ("Created index %s", name));
  DBUG_RETURN(0);  
}


/*
  Rename a table in NDB Cluster
*/

int ha_ndbcluster::rename_table(const char *from, const char *to)
{
  char new_tabname[FN_HEADLEN];

  DBUG_ENTER("ha_ndbcluster::rename_table");
  set_dbname(from);
  set_tabname(from);
  set_tabname(to, new_tabname);

3686 3687 3688
  if (check_ndb_connection())
    DBUG_RETURN(my_errno= HA_ERR_NO_CONNECTION);

unknown's avatar
unknown committed
3689 3690 3691

  int result= alter_table_name(m_tabname, new_tabname);
  if (result == 0)
3692
  {
unknown's avatar
unknown committed
3693
    set_tabname(to);
3694 3695
    handler::rename_table(from, to);
  }
unknown's avatar
unknown committed
3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720
  
  DBUG_RETURN(result);
}


/*
  Rename a table in NDB Cluster using alter table
 */

int ha_ndbcluster::alter_table_name(const char *from, const char *to)
{
  NDBDICT *dict= m_ndb->getDictionary();
  const NDBTAB *orig_tab;
  DBUG_ENTER("alter_table_name_table");
  DBUG_PRINT("enter", ("Renaming %s to %s", from, to));

  if (!(orig_tab= dict->getTable(from)))
    ERR_RETURN(dict->getNdbError());
      
  NdbDictionary::Table copy_tab= dict->getTableForAlteration(from);
  copy_tab.setName(to);
  if (dict->alterTable(copy_tab) != 0)
    ERR_RETURN(dict->getNdbError());

  m_table= NULL;
unknown's avatar
unknown committed
3721
  m_table_info= NULL;
unknown's avatar
unknown committed
3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739
                                                                             
  DBUG_RETURN(0);
}


/*
  Delete a table from NDB Cluster
 */

int ha_ndbcluster::delete_table(const char *name)
{
  DBUG_ENTER("delete_table");
  DBUG_PRINT("enter", ("name: %s", name));
  set_dbname(name);
  set_tabname(name);
  
  if (check_ndb_connection())
    DBUG_RETURN(HA_ERR_NO_CONNECTION);
3740 3741

  handler::delete_table(name);
unknown's avatar
unknown committed
3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781
  DBUG_RETURN(drop_table());
}


/*
  Drop a table in NDB Cluster
 */

int ha_ndbcluster::drop_table()
{
  NdbDictionary::Dictionary *dict= m_ndb->getDictionary();

  DBUG_ENTER("drop_table");
  DBUG_PRINT("enter", ("Deleting %s", m_tabname));
  
  if (dict->dropTable(m_tabname)) 
  {
    const NdbError err= dict->getNdbError();
    if (err.code == 709)
      ; // 709: No such table existed
    else 
      ERR_RETURN(dict->getNdbError());
  }  
  release_metadata();
  DBUG_RETURN(0);
}


/*
  Drop a database in NDB Cluster
 */

int ndbcluster_drop_database(const char *path)
{
  DBUG_ENTER("ndbcluster_drop_database");
  // TODO drop all tables for this database
  DBUG_RETURN(1);
}


3782
ulonglong ha_ndbcluster::get_auto_increment()
3783
{  
3784 3785
  int cache_size;
  Uint64 auto_value;
unknown's avatar
unknown committed
3786 3787
  DBUG_ENTER("get_auto_increment");
  DBUG_PRINT("enter", ("m_tabname: %s", m_tabname));
unknown's avatar
unknown committed
3788
  cache_size= 
3789
    (m_rows_to_insert - m_rows_inserted < m_autoincrement_prefetch) ?
3790
    m_rows_to_insert - m_rows_inserted 
3791
    : (m_rows_to_insert > m_autoincrement_prefetch) ? 
3792
    m_rows_to_insert 
3793
    : m_autoincrement_prefetch;
unknown's avatar
unknown committed
3794
  auto_value= 
3795
    (m_skip_auto_increment) ? 
unknown's avatar
unknown committed
3796 3797
    m_ndb->readAutoIncrementValue((const NDBTAB *) m_table)
    : m_ndb->getAutoIncrementValue((const NDBTAB *) m_table, cache_size);
unknown's avatar
unknown committed
3798
  DBUG_RETURN((longlong)auto_value);
unknown's avatar
unknown committed
3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809
}


/*
  Constructor for the NDB Cluster table handler 
 */

ha_ndbcluster::ha_ndbcluster(TABLE *table_arg):
  handler(table_arg),
  m_active_trans(NULL),
  m_active_cursor(NULL),
unknown's avatar
unknown committed
3810
  m_multi_cursor(NULL),
unknown's avatar
unknown committed
3811 3812
  m_ndb(NULL),
  m_table(NULL),
3813
  m_table_info(NULL),
unknown's avatar
unknown committed
3814
  m_table_flags(HA_REC_NOT_IN_SEQ |
unknown's avatar
unknown committed
3815
		HA_NULL_IN_KEY |
3816
		HA_AUTO_PART_KEY |
3817
                HA_NO_VARCHAR |
3818
		HA_NO_PREFIX_CHAR_KEYS),
3819
  m_share(0),
unknown's avatar
unknown committed
3820
  m_use_write(FALSE),
3821
  m_ignore_dup_key(FALSE),
3822 3823
  m_primary_key_update(FALSE),
  m_retrieve_all_fields(FALSE),
3824
  m_retrieve_primary_key(FALSE),
3825 3826 3827 3828 3829 3830 3831 3832 3833
  m_rows_to_insert(1),
  m_rows_inserted(0),
  m_bulk_insert_rows(1024),
  m_bulk_insert_not_flushed(FALSE),
  m_ops_pending(0),
  m_skip_auto_increment(TRUE),
  m_blobs_pending(0),
  m_blobs_buffer(0),
  m_blobs_buffer_size(0),
3834 3835 3836 3837
  m_dupkey((uint) -1),
  m_ha_not_exact_count(FALSE),
  m_force_send(TRUE),
  m_autoincrement_prefetch(32),
unknown's avatar
unknown committed
3838 3839
  m_transaction_on(TRUE),
  m_use_local_query_cache(FALSE)
unknown's avatar
unknown committed
3840
{ 
3841 3842
  int i;
  
unknown's avatar
unknown committed
3843 3844 3845 3846 3847
  DBUG_ENTER("ha_ndbcluster");

  m_tabname[0]= '\0';
  m_dbname[0]= '\0';

3848
  records= ~(ha_rows)0; // uninitialized
unknown's avatar
unknown committed
3849 3850
  block_size= 1024;

3851 3852
  for (i= 0; i < MAX_KEY; i++)
  {
3853 3854 3855
    m_index[i].type= UNDEFINED_INDEX;   
    m_index[i].unique_index= NULL;      
    m_index[i].index= NULL;      
3856 3857
  }

unknown's avatar
unknown committed
3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869
  DBUG_VOID_RETURN;
}


/*
  Destructor for NDB Cluster table handler
 */

ha_ndbcluster::~ha_ndbcluster() 
{
  DBUG_ENTER("~ha_ndbcluster");

3870 3871
  if (m_share)
    free_share(m_share);
unknown's avatar
unknown committed
3872
  release_metadata();
3873 3874
  my_free(m_blobs_buffer, MYF(MY_ALLOW_ZERO_PTR));
  m_blobs_buffer= 0;
unknown's avatar
unknown committed
3875 3876

  // Check for open cursor/transaction
3877 3878
  if (m_active_cursor) {
  }
unknown's avatar
unknown committed
3879
  DBUG_ASSERT(m_active_cursor == NULL);
3880 3881
  if (m_active_trans) {
  }
unknown's avatar
unknown committed
3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895
  DBUG_ASSERT(m_active_trans == NULL);

  DBUG_VOID_RETURN;
}


/*
  Open a table for further use
  - fetch metadata for this table from NDB
  - check that table exists
*/

int ha_ndbcluster::open(const char *name, int mode, uint test_if_locked)
{
unknown's avatar
unknown committed
3896
  int res;
unknown's avatar
unknown committed
3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918
  KEY *key;
  DBUG_ENTER("open");
  DBUG_PRINT("enter", ("name: %s mode: %d test_if_locked: %d",
                       name, mode, test_if_locked));
  
  // Setup ref_length to make room for the whole 
  // primary key to be written in the ref variable
  
  if (table->primary_key != MAX_KEY) 
  {
    key= table->key_info+table->primary_key;
    ref_length= key->key_length;
    DBUG_PRINT("info", (" ref_length: %d", ref_length));
  }
  // Init table lock structure 
  if (!(m_share=get_share(name)))
    DBUG_RETURN(1);
  thr_lock_data_init(&m_share->lock,&m_lock,(void*) 0);
  
  set_dbname(name);
  set_tabname(name);
  
3919 3920
  if (check_ndb_connection()) {
    free_share(m_share); m_share= 0;
unknown's avatar
unknown committed
3921
    DBUG_RETURN(HA_ERR_NO_CONNECTION);
3922
  }
3923
  
unknown's avatar
unknown committed
3924 3925 3926
  res= get_metadata(name);
  if (!res)
    info(HA_STATUS_VARIABLE | HA_STATUS_CONST);
unknown's avatar
unknown committed
3927

unknown's avatar
unknown committed
3928
  DBUG_RETURN(res);
unknown's avatar
unknown committed
3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939
}


/*
  Close the table
  - release resources setup by open()
 */

int ha_ndbcluster::close(void)
{
  DBUG_ENTER("close");  
3940
  free_share(m_share); m_share= 0;
unknown's avatar
unknown committed
3941 3942 3943 3944 3945 3946
  release_metadata();
  m_ndb= NULL;
  DBUG_RETURN(0);
}


3947
Thd_ndb* ha_ndbcluster::seize_thd_ndb()
unknown's avatar
unknown committed
3948
{
3949 3950
  Thd_ndb *thd_ndb;
  DBUG_ENTER("seize_thd_ndb");
unknown's avatar
unknown committed
3951

3952 3953 3954
  thd_ndb= new Thd_ndb();
  thd_ndb->ndb->getDictionary()->set_local_table_data_size(sizeof(Ndb_table_local_info));
  if (thd_ndb->ndb->init(max_transactions) != 0)
unknown's avatar
unknown committed
3955
  {
3956
    ERR_PRINT(thd_ndb->ndb->getNdbError());
unknown's avatar
unknown committed
3957 3958 3959 3960 3961 3962
    /*
      TODO 
      Alt.1 If init fails because to many allocated Ndb 
      wait on condition for a Ndb object to be released.
      Alt.2 Seize/release from pool, wait until next release 
    */
3963 3964
    delete thd_ndb;
    thd_ndb= NULL;
unknown's avatar
unknown committed
3965
  }
3966
  DBUG_RETURN(thd_ndb);
unknown's avatar
unknown committed
3967 3968 3969
}


3970
void ha_ndbcluster::release_thd_ndb(Thd_ndb* thd_ndb)
unknown's avatar
unknown committed
3971
{
3972 3973
  DBUG_ENTER("release_thd_ndb");
  delete thd_ndb;
unknown's avatar
unknown committed
3974 3975 3976 3977 3978
  DBUG_VOID_RETURN;
}


/*
unknown's avatar
unknown committed
3979
  If this thread already has a Thd_ndb object allocated
unknown's avatar
unknown committed
3980
  in current THD, reuse it. Otherwise
unknown's avatar
unknown committed
3981
  seize a Thd_ndb object, assign it to current THD and use it.
unknown's avatar
unknown committed
3982 3983 3984
 
*/

3985
Ndb* check_ndb_in_thd(THD* thd)
unknown's avatar
unknown committed
3986
{
3987
  DBUG_ENTER("check_ndb_in_thd");
3988
  Thd_ndb *thd_ndb= (Thd_ndb*)thd->transaction.thd_ndb;
unknown's avatar
unknown committed
3989
  
3990
  if (!thd_ndb)
unknown's avatar
unknown committed
3991
  {
unknown's avatar
unknown committed
3992
    if (!(thd_ndb= ha_ndbcluster::seize_thd_ndb()))
3993
      DBUG_RETURN(NULL);
3994
    thd->transaction.thd_ndb= thd_ndb;
unknown's avatar
unknown committed
3995
  }
unknown's avatar
unknown committed
3996
  DBUG_RETURN(thd_ndb->ndb);
3997 3998
}

unknown's avatar
unknown committed
3999

unknown's avatar
unknown committed
4000 4001 4002 4003 4004
int ha_ndbcluster::check_ndb_connection()
{
  THD* thd= current_thd;
  DBUG_ENTER("check_ndb_connection");
  
unknown's avatar
unknown committed
4005
  if (!(m_ndb= check_ndb_in_thd(thd)))
4006
    DBUG_RETURN(HA_ERR_NO_CONNECTION);
unknown's avatar
unknown committed
4007 4008 4009 4010
  m_ndb->setDatabaseName(m_dbname);
  DBUG_RETURN(0);
}

unknown's avatar
unknown committed
4011

unknown's avatar
unknown committed
4012 4013
void ndbcluster_close_connection(THD *thd)
{
4014
  Thd_ndb *thd_ndb= (Thd_ndb*)thd->transaction.thd_ndb;
unknown's avatar
unknown committed
4015
  DBUG_ENTER("ndbcluster_close_connection");
4016 4017
  if (thd_ndb)
  {
4018
    ha_ndbcluster::release_thd_ndb(thd_ndb);
4019 4020
    thd->transaction.thd_ndb= NULL;
  }
unknown's avatar
unknown committed
4021 4022 4023 4024 4025 4026 4027 4028
  DBUG_VOID_RETURN;
}


/*
  Try to discover one table from NDB
 */

4029
int ndbcluster_discover(THD* thd, const char *db, const char *name,
unknown's avatar
unknown committed
4030 4031 4032 4033 4034
			const void** frmblob, uint* frmlen)
{
  uint len;
  const void* data;
  const NDBTAB* tab;
4035
  Ndb* ndb;
unknown's avatar
unknown committed
4036
  DBUG_ENTER("ndbcluster_discover");
4037
  DBUG_PRINT("enter", ("db: %s, name: %s", db, name)); 
unknown's avatar
unknown committed
4038

4039 4040 4041
  if (!(ndb= check_ndb_in_thd(thd)))
    DBUG_RETURN(HA_ERR_NO_CONNECTION);  
  ndb->setDatabaseName(db);
4042

4043
  NDBDICT* dict= ndb->getDictionary();
unknown's avatar
unknown committed
4044
  dict->set_local_table_data_size(sizeof(Ndb_table_local_info));
4045 4046 4047 4048 4049 4050 4051
  dict->invalidateTable(name);
  if (!(tab= dict->getTable(name)))
  {    
    const NdbError err= dict->getNdbError();
    if (err.code == 709)
      DBUG_RETURN(1);
    ERR_RETURN(err);
unknown's avatar
unknown committed
4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073
  }
  
  DBUG_PRINT("info", ("Found table %s", tab->getName()));
  
  len= tab->getFrmLength();  
  if (len == 0 || tab->getFrmData() == NULL)
  {
    DBUG_PRINT("No frm data found",
               ("Table is probably created via NdbApi")); 
    DBUG_RETURN(2);
  }
  
  if (unpackfrm(&data, &len, tab->getFrmData()))
    DBUG_RETURN(3);

  *frmlen= len;
  *frmblob= data;
  
  DBUG_RETURN(0);
}

/*
4074 4075 4076
  Check if a table exists in NDB
   
 */
unknown's avatar
unknown committed
4077

4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091
int ndbcluster_table_exists(THD* thd, const char *db, const char *name)
{
  uint len;
  const void* data;
  const NDBTAB* tab;
  Ndb* ndb;
  DBUG_ENTER("ndbcluster_table_exists");
  DBUG_PRINT("enter", ("db: %s, name: %s", db, name)); 

  if (!(ndb= check_ndb_in_thd(thd)))
    DBUG_RETURN(HA_ERR_NO_CONNECTION);  
  ndb->setDatabaseName(db);

  NDBDICT* dict= ndb->getDictionary();
unknown's avatar
unknown committed
4092
  dict->set_local_table_data_size(sizeof(Ndb_table_local_info));
4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105
  dict->invalidateTable(name);
  if (!(tab= dict->getTable(name)))
  {    
    const NdbError err= dict->getNdbError();
    if (err.code == 709)
      DBUG_RETURN(0);
    ERR_RETURN(err);
  }
  
  DBUG_PRINT("info", ("Found table %s", tab->getName()));
  DBUG_RETURN(1);
}

unknown's avatar
unknown committed
4106 4107


unknown's avatar
unknown committed
4108 4109
extern "C" byte* tables_get_key(const char *entry, uint *length,
				my_bool not_used __attribute__((unused)))
4110 4111 4112 4113 4114 4115 4116
{
  *length= strlen(entry);
  return (byte*) entry;
}


int ndbcluster_find_files(THD *thd,const char *db,const char *path,
unknown's avatar
unknown committed
4117
			  const char *wild, bool dir, List<char> *files)
unknown's avatar
unknown committed
4118
{
4119 4120 4121
  DBUG_ENTER("ndbcluster_find_files");
  DBUG_PRINT("enter", ("db: %s", db));
  { // extra bracket to avoid gcc 2.95.3 warning
unknown's avatar
unknown committed
4122
  uint i;
4123
  Ndb* ndb;
4124
  char name[FN_REFLEN];
unknown's avatar
unknown committed
4125
  HASH ndb_tables, ok_tables;
unknown's avatar
unknown committed
4126
  NdbDictionary::Dictionary::List list;
4127 4128 4129 4130

  if (!(ndb= check_ndb_in_thd(thd)))
    DBUG_RETURN(HA_ERR_NO_CONNECTION);

4131
  if (dir)
unknown's avatar
unknown committed
4132
    DBUG_RETURN(0); // Discover of databases not yet supported
4133

unknown's avatar
unknown committed
4134
  // List tables in NDB
4135
  NDBDICT *dict= ndb->getDictionary();
unknown's avatar
unknown committed
4136 4137
  if (dict->listObjects(list, 
			NdbDictionary::Object::UserTable) != 0)
unknown's avatar
unknown committed
4138
    ERR_RETURN(dict->getNdbError());
4139

unknown's avatar
unknown committed
4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154
  if (hash_init(&ndb_tables, system_charset_info,list.count,0,0,
		(hash_get_key)tables_get_key,0,0))
  {
    DBUG_PRINT("error", ("Failed to init HASH ndb_tables"));
    DBUG_RETURN(-1);
  }

  if (hash_init(&ok_tables, system_charset_info,32,0,0,
		(hash_get_key)tables_get_key,0,0))
  {
    DBUG_PRINT("error", ("Failed to init HASH ok_tables"));
    hash_free(&ndb_tables);
    DBUG_RETURN(-1);
  }  

unknown's avatar
unknown committed
4155 4156 4157
  for (i= 0 ; i < list.count ; i++)
  {
    NdbDictionary::Dictionary::List::Element& t= list.elements[i];
unknown's avatar
unknown committed
4158
    DBUG_PRINT("info", ("Found %s/%s in NDB", t.database, t.name));     
unknown's avatar
unknown committed
4159

4160 4161 4162
    // Add only tables that belongs to db
    if (my_strcasecmp(system_charset_info, t.database, db))
      continue;
unknown's avatar
unknown committed
4163

unknown's avatar
unknown committed
4164
    // Apply wildcard to list of tables in NDB
4165
    if (wild)
4166
    {
4167 4168 4169 4170 4171 4172 4173 4174
      if (lower_case_table_names)
      {
	if (wild_case_compare(files_charset_info, t.name, wild))
	  continue;
      }
      else if (wild_compare(t.name,wild,0))
	continue;
    }
unknown's avatar
unknown committed
4175 4176
    DBUG_PRINT("info", ("Inserting %s into ndb_tables hash", t.name));     
    my_hash_insert(&ndb_tables, (byte*)thd->strdup(t.name));
unknown's avatar
unknown committed
4177 4178
  }

unknown's avatar
unknown committed
4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193
  char *file_name;
  List_iterator<char> it(*files);
  List<char> delete_list;
  while ((file_name=it++))
  {
    DBUG_PRINT("info", ("%s", file_name));     
    if (hash_search(&ndb_tables, file_name, strlen(file_name)))
    {
      DBUG_PRINT("info", ("%s existed in NDB _and_ on disk ", file_name));
      // File existed in NDB and as frm file, put in ok_tables list
      my_hash_insert(&ok_tables, (byte*)file_name);
      continue;
    }
    
    // File is not in NDB, check for .ndb file with this name
4194
    (void)strxnmov(name, FN_REFLEN, 
unknown's avatar
unknown committed
4195 4196
		   mysql_data_home,"/",db,"/",file_name,ha_ndb_ext,NullS);
    DBUG_PRINT("info", ("Check access for %s", name));
4197
    if (access(name, F_OK))
unknown's avatar
unknown committed
4198 4199 4200 4201
    {
      DBUG_PRINT("info", ("%s did not exist on disk", name));     
      // .ndb file did not exist on disk, another table type
      continue;
4202
    }
4203

unknown's avatar
unknown committed
4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214
    DBUG_PRINT("info", ("%s existed on disk", name));     
    // The .ndb file exists on disk, but it's not in list of tables in ndb
    // Verify that handler agrees table is gone.
    if (ndbcluster_table_exists(thd, db, file_name) == 0)    
    {
      DBUG_PRINT("info", ("NDB says %s does not exists", file_name));     
      it.remove();
      // Put in list of tables to remove from disk
      delete_list.push_back(thd->strdup(file_name));
    }
  }
4215

unknown's avatar
unknown committed
4216 4217 4218 4219
  // Check for new files to discover
  DBUG_PRINT("info", ("Checking for new files to discover"));       
  List<char> create_list;
  for (i= 0 ; i < ndb_tables.records ; i++)
4220
  {
unknown's avatar
unknown committed
4221 4222
    file_name= hash_element(&ndb_tables, i);
    if (!hash_search(&ok_tables, file_name, strlen(file_name)))
4223
    {
unknown's avatar
unknown committed
4224 4225 4226 4227 4228 4229
      DBUG_PRINT("info", ("%s must be discovered", file_name));       
      // File is in list of ndb tables and not in ok_tables
      // This table need to be created
      create_list.push_back(thd->strdup(file_name));
    }
  }
4230

unknown's avatar
unknown committed
4231 4232
  // Lock mutex before deleting and creating frm files
  pthread_mutex_lock(&LOCK_open);
4233

unknown's avatar
unknown committed
4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244
  if (!global_read_lock)
  {
    // Delete old files
    List_iterator_fast<char> it3(delete_list);
    while ((file_name=it3++))
    {  
      DBUG_PRINT("info", ("Remove table %s/%s",db, file_name ));
      // Delete the table and all related files
      TABLE_LIST table_list;
      bzero((char*) &table_list,sizeof(table_list));
      table_list.db= (char*) db;
4245
      table_list.alias=table_list.real_name=(char*)file_name;
unknown's avatar
unknown committed
4246
      (void)mysql_rm_table_part2(thd, &table_list, 
unknown's avatar
unknown committed
4247 4248
				 /* if_exists */ TRUE, 
				 /* drop_temporary */ FALSE, 
unknown's avatar
unknown committed
4249
				 /* drop_view */ FALSE,
unknown's avatar
unknown committed
4250
				 /* dont_log_query*/ TRUE);
4251 4252 4253
    }
  }

unknown's avatar
unknown committed
4254 4255 4256 4257 4258
  // Create new files
  List_iterator_fast<char> it2(create_list);
  while ((file_name=it2++))
  {  
    DBUG_PRINT("info", ("Table %s need discovery", name));
unknown's avatar
unknown committed
4259
    if (ha_create_table_from_engine(thd, db, file_name, TRUE) == 0)
4260
      files->push_back(thd->strdup(file_name)); 
unknown's avatar
unknown committed
4261 4262 4263 4264 4265
  }

  pthread_mutex_unlock(&LOCK_open);      
  
  hash_free(&ok_tables);
4266
  hash_free(&ndb_tables);
4267
  } // extra bracket to avoid gcc 2.95.3 warning
4268
  DBUG_RETURN(0);    
unknown's avatar
unknown committed
4269 4270 4271 4272 4273 4274 4275 4276 4277 4278
}


/*
  Initialise all gloal variables before creating 
  a NDB Cluster table handler
 */

bool ndbcluster_init()
{
unknown's avatar
unknown committed
4279
  int res;
unknown's avatar
unknown committed
4280
  DBUG_ENTER("ndbcluster_init");
4281
  // Set connectstring if specified
unknown's avatar
unknown committed
4282
  if (ndbcluster_connectstring != 0)
4283
    DBUG_PRINT("connectstring", ("%s", ndbcluster_connectstring));     
4284 4285 4286 4287
  if ((g_ndb_cluster_connection=
       new Ndb_cluster_connection(ndbcluster_connectstring)) == 0)
  {
    DBUG_PRINT("error",("Ndb_cluster_connection(%s)",ndbcluster_connectstring));
unknown's avatar
unknown committed
4288
    goto ndbcluster_init_error;
4289
  }
unknown's avatar
unknown committed
4290

unknown's avatar
unknown committed
4291
  // Create a Ndb object to open the connection  to NDB
4292
  g_ndb= new Ndb(g_ndb_cluster_connection, "sys");
4293
  g_ndb->getDictionary()->set_local_table_data_size(sizeof(Ndb_table_local_info));
unknown's avatar
unknown committed
4294 4295 4296
  if (g_ndb->init() != 0)
  {
    ERR_PRINT (g_ndb->getNdbError());
unknown's avatar
unknown committed
4297
    goto ndbcluster_init_error;
unknown's avatar
unknown committed
4298
  }
unknown's avatar
unknown committed
4299

unknown's avatar
unknown committed
4300
  if ((res= g_ndb_cluster_connection->connect(0,0,0)) == 0)
unknown's avatar
unknown committed
4301
  {
unknown's avatar
unknown committed
4302 4303 4304
    DBUG_PRINT("info",("NDBCLUSTER storage engine at %s on port %d",
		       g_ndb_cluster_connection->get_connected_host(),
		       g_ndb_cluster_connection->get_connected_port()));
unknown's avatar
unknown committed
4305 4306
    g_ndb->waitUntilReady(10);
  } 
unknown's avatar
unknown committed
4307
  else if(res == 1)
unknown's avatar
unknown committed
4308
  {
unknown's avatar
unknown committed
4309 4310
    if (g_ndb_cluster_connection->start_connect_thread()) {
      DBUG_PRINT("error", ("g_ndb_cluster_connection->start_connect_thread()"));
unknown's avatar
unknown committed
4311 4312 4313 4314 4315 4316
      goto ndbcluster_init_error;
    }
    {
      char buf[1024];
      DBUG_PRINT("info",("NDBCLUSTER storage engine not started, will connect using %s",
			 g_ndb_cluster_connection->get_connectstring(buf,sizeof(buf))));
unknown's avatar
unknown committed
4317
    }
unknown's avatar
unknown committed
4318
  }
unknown's avatar
unknown committed
4319
  else
unknown's avatar
unknown committed
4320 4321 4322
  {
    DBUG_ASSERT(res == -1);
    DBUG_PRINT("error", ("permanent error"));
unknown's avatar
unknown committed
4323
    goto ndbcluster_init_error;
unknown's avatar
unknown committed
4324
  }
unknown's avatar
unknown committed
4325
  
unknown's avatar
unknown committed
4326 4327 4328
  (void) hash_init(&ndbcluster_open_tables,system_charset_info,32,0,0,
                   (hash_get_key) ndbcluster_get_key,0,0);
  pthread_mutex_init(&ndbcluster_mutex,MY_MUTEX_INIT_FAST);
4329

unknown's avatar
unknown committed
4330 4331 4332
  ndbcluster_inited= 1;
#ifdef USE_DISCOVER_ON_STARTUP
  if (ndb_discover_tables() != 0)
unknown's avatar
unknown committed
4333
    goto ndbcluster_init_error;    
unknown's avatar
unknown committed
4334
#endif
unknown's avatar
unknown committed
4335
  DBUG_RETURN(FALSE);
unknown's avatar
unknown committed
4336 4337 4338
 ndbcluster_init_error:
  ndbcluster_end();
  DBUG_RETURN(TRUE);
unknown's avatar
unknown committed
4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350
}


/*
  End use of the NDB Cluster table handler
  - free all global variables allocated by 
    ndcluster_init()
*/

bool ndbcluster_end()
{
  DBUG_ENTER("ndbcluster_end");
unknown's avatar
unknown committed
4351 4352
  if(g_ndb)
    delete g_ndb;
unknown's avatar
unknown committed
4353
  g_ndb= NULL;
4354 4355 4356
  if (g_ndb_cluster_connection)
    delete g_ndb_cluster_connection;
  g_ndb_cluster_connection= NULL;
unknown's avatar
unknown committed
4357 4358 4359 4360 4361 4362 4363 4364
  if (!ndbcluster_inited)
    DBUG_RETURN(0);
  hash_free(&ndbcluster_open_tables);
  pthread_mutex_destroy(&ndbcluster_mutex);
  ndbcluster_inited= 0;
  DBUG_RETURN(0);
}

4365 4366 4367 4368 4369
/*
  Static error print function called from
  static handler method ndbcluster_commit
  and ndbcluster_rollback
*/
4370 4371

void ndbcluster_print_error(int error, const NdbOperation *error_op)
4372
{
4373 4374
  DBUG_ENTER("ndbcluster_print_error");
  TABLE tab;
4375 4376
  const char *tab_name= (error_op) ? error_op->getTableName() : "";
  tab.table_name= (char *) tab_name;
4377
  ha_ndbcluster error_handler(&tab);
4378
  tab.file= &error_handler;
4379
  error_handler.print_error(error, MYF(0));
unknown's avatar
unknown committed
4380
  DBUG_VOID_RETURN;
4381
}
unknown's avatar
unknown committed
4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404

/*
  Set m_tabname from full pathname to table file 
 */

void ha_ndbcluster::set_tabname(const char *path_name)
{
  char *end, *ptr;
  
  /* Scan name from the end */
  end= strend(path_name)-1;
  ptr= end;
  while (ptr >= path_name && *ptr != '\\' && *ptr != '/') {
    ptr--;
  }
  uint name_len= end - ptr;
  memcpy(m_tabname, ptr + 1, end - ptr);
  m_tabname[name_len]= '\0';
#ifdef __WIN__
  /* Put to lower case */
  ptr= m_tabname;
  
  while (*ptr != '\0') {
4405
    *ptr= tolower(*ptr);
unknown's avatar
unknown committed
4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420
    ptr++;
  }
#endif
}

/**
 * Set a given location from full pathname to table file
 *
 */
void
ha_ndbcluster::set_tabname(const char *path_name, char * tabname)
{
  char *end, *ptr;
  
  /* Scan name from the end */
4421 4422
  end= strend(path_name)-1;
  ptr= end;
unknown's avatar
unknown committed
4423 4424 4425
  while (ptr >= path_name && *ptr != '\\' && *ptr != '/') {
    ptr--;
  }
4426
  uint name_len= end - ptr;
unknown's avatar
unknown committed
4427
  memcpy(tabname, ptr + 1, end - ptr);
4428
  tabname[name_len]= '\0';
unknown's avatar
unknown committed
4429 4430
#ifdef __WIN__
  /* Put to lower case */
4431
  ptr= tabname;
unknown's avatar
unknown committed
4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476
  
  while (*ptr != '\0') {
    *ptr= tolower(*ptr);
    ptr++;
  }
#endif
}


/*
  Set m_dbname from full pathname to table file
 
 */

void ha_ndbcluster::set_dbname(const char *path_name)
{
  char *end, *ptr;
  
  /* Scan name from the end */
  ptr= strend(path_name)-1;
  while (ptr >= path_name && *ptr != '\\' && *ptr != '/') {
    ptr--;
  }
  ptr--;
  end= ptr;
  while (ptr >= path_name && *ptr != '\\' && *ptr != '/') {
    ptr--;
  }
  uint name_len= end - ptr;
  memcpy(m_dbname, ptr + 1, name_len);
  m_dbname[name_len]= '\0';
#ifdef __WIN__
  /* Put to lower case */
  
  ptr= m_dbname;
  
  while (*ptr != '\0') {
    *ptr= tolower(*ptr);
    ptr++;
  }
#endif
}


ha_rows 
unknown's avatar
unknown committed
4477 4478 4479 4480
ha_ndbcluster::records_in_range(uint inx, key_range *min_key,
                                key_range *max_key)
{
  KEY *key_info= table->key_info + inx;
unknown's avatar
unknown committed
4481
  uint key_length= key_info->key_length;
4482
  NDB_INDEX_TYPE idx_type= get_index_type(inx);  
unknown's avatar
unknown committed
4483 4484

  DBUG_ENTER("records_in_range");
4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498
  // Prevent partial read of hash indexes by returning HA_POS_ERROR
  if ((idx_type == UNIQUE_INDEX || idx_type == PRIMARY_KEY_INDEX) &&
      ((min_key && min_key->length < key_length) ||
       (max_key && max_key->length < key_length)))
    DBUG_RETURN(HA_POS_ERROR);
  
  // Read from hash index with full key
  // This is a "const" table which returns only one record!      
  if ((idx_type != ORDERED_INDEX) &&
      ((min_key && min_key->length == key_length) || 
       (max_key && max_key->length == key_length)))
    DBUG_RETURN(1);
  
  DBUG_RETURN(10); /* Good guess when you don't know anything */
unknown's avatar
unknown committed
4499 4500
}

4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537
ulong ha_ndbcluster::table_flags(void) const
{
  if (m_ha_not_exact_count)
    return m_table_flags | HA_NOT_EXACT_COUNT;
  else
    return m_table_flags;
}
const char * ha_ndbcluster::table_type() const 
{
  return("ndbcluster");
}
uint ha_ndbcluster::max_supported_record_length() const
{ 
  return NDB_MAX_TUPLE_SIZE;
}
uint ha_ndbcluster::max_supported_keys() const
{
  return MAX_KEY;
}
uint ha_ndbcluster::max_supported_key_parts() const 
{
  return NDB_MAX_NO_OF_ATTRIBUTES_IN_KEY;
}
uint ha_ndbcluster::max_supported_key_length() const
{
  return NDB_MAX_KEY_SIZE;
}
bool ha_ndbcluster::low_byte_first() const
{ 
#ifdef WORDS_BIGENDIAN
  return FALSE;
#else
  return TRUE;
#endif
}
bool ha_ndbcluster::has_transactions()
{
unknown's avatar
unknown committed
4538
  return m_transaction_on;
4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554
}
const char* ha_ndbcluster::index_type(uint key_number)
{
  switch (get_index_type(key_number)) {
  case ORDERED_INDEX:
  case UNIQUE_ORDERED_INDEX:
  case PRIMARY_KEY_ORDERED_INDEX:
    return "BTREE";
  case UNIQUE_INDEX:
  case PRIMARY_KEY_INDEX:
  default:
    return "HASH";
  }
}
uint8 ha_ndbcluster::table_cache_type()
{
unknown's avatar
unknown committed
4555 4556 4557 4558
  if (m_use_local_query_cache)
    return HA_CACHE_TBL_TRANSACT;
  else
    return HA_CACHE_TBL_NOCACHE;
4559
}
unknown's avatar
unknown committed
4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650

/*
  Handling the shared NDB_SHARE structure that is needed to 
  provide table locking.
  It's also used for sharing data with other NDB handlers
  in the same MySQL Server. There is currently not much
  data we want to or can share.
 */

static byte* ndbcluster_get_key(NDB_SHARE *share,uint *length,
				my_bool not_used __attribute__((unused)))
{
  *length=share->table_name_length;
  return (byte*) share->table_name;
}

static NDB_SHARE* get_share(const char *table_name)
{
  NDB_SHARE *share;
  pthread_mutex_lock(&ndbcluster_mutex);
  uint length=(uint) strlen(table_name);
  if (!(share=(NDB_SHARE*) hash_search(&ndbcluster_open_tables,
                                       (byte*) table_name,
                                       length)))
  {
    if ((share=(NDB_SHARE *) my_malloc(sizeof(*share)+length+1,
                                       MYF(MY_WME | MY_ZEROFILL))))
    {
      share->table_name_length=length;
      share->table_name=(char*) (share+1);
      strmov(share->table_name,table_name);
      if (my_hash_insert(&ndbcluster_open_tables, (byte*) share))
      {
        pthread_mutex_unlock(&ndbcluster_mutex);
        my_free((gptr) share,0);
        return 0;
      }
      thr_lock_init(&share->lock);
      pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST);
    }
  }
  share->use_count++;
  pthread_mutex_unlock(&ndbcluster_mutex);
  return share;
}


static void free_share(NDB_SHARE *share)
{
  pthread_mutex_lock(&ndbcluster_mutex);
  if (!--share->use_count)
  {
    hash_delete(&ndbcluster_open_tables, (byte*) share);
    thr_lock_delete(&share->lock);
    pthread_mutex_destroy(&share->mutex);
    my_free((gptr) share, MYF(0));
  }
  pthread_mutex_unlock(&ndbcluster_mutex);
}



/*
  Internal representation of the frm blob
   
*/

struct frm_blob_struct 
{
  struct frm_blob_header 
  {
    uint ver;      // Version of header
    uint orglen;   // Original length of compressed data
    uint complen;  // Compressed length of data, 0=uncompressed
  } head;
  char data[1];  
};



static int packfrm(const void *data, uint len, 
		   const void **pack_data, uint *pack_len)
{
  int error;
  ulong org_len, comp_len;
  uint blob_len;
  frm_blob_struct* blob;
  DBUG_ENTER("packfrm");
  DBUG_PRINT("enter", ("data: %x, len: %d", data, len));
  
  error= 1;
4651
  org_len= len;
unknown's avatar
unknown committed
4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670
  if (my_compress((byte*)data, &org_len, &comp_len))
    goto err;
  
  DBUG_PRINT("info", ("org_len: %d, comp_len: %d", org_len, comp_len));
  DBUG_DUMP("compressed", (char*)data, org_len);
  
  error= 2;
  blob_len= sizeof(frm_blob_struct::frm_blob_header)+org_len;
  if (!(blob= (frm_blob_struct*) my_malloc(blob_len,MYF(MY_WME))))
    goto err;
  
  // Store compressed blob in machine independent format
  int4store((char*)(&blob->head.ver), 1);
  int4store((char*)(&blob->head.orglen), comp_len);
  int4store((char*)(&blob->head.complen), org_len);
  
  // Copy frm data into blob, already in machine independent format
  memcpy(blob->data, data, org_len);  
  
4671 4672 4673
  *pack_data= blob;
  *pack_len= blob_len;
  error= 0;
unknown's avatar
unknown committed
4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684
  
  DBUG_PRINT("exit", ("pack_data: %x, pack_len: %d", *pack_data, *pack_len));
err:
  DBUG_RETURN(error);
  
}


static int unpackfrm(const void **unpack_data, uint *unpack_len,
		    const void *pack_data)
{
4685
   const frm_blob_struct *blob= (frm_blob_struct*)pack_data;
unknown's avatar
unknown committed
4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700
   byte *data;
   ulong complen, orglen, ver;
   DBUG_ENTER("unpackfrm");
   DBUG_PRINT("enter", ("pack_data: %x", pack_data));

   complen=	uint4korr((char*)&blob->head.complen);
   orglen=	uint4korr((char*)&blob->head.orglen);
   ver=		uint4korr((char*)&blob->head.ver);
 
   DBUG_PRINT("blob",("ver: %d complen: %d orglen: %d",
 		     ver,complen,orglen));
   DBUG_DUMP("blob->data", (char*) blob->data, complen);
 
   if (ver != 1)
     DBUG_RETURN(1);
4701
   if (!(data= my_malloc(max(orglen, complen), MYF(MY_WME))))
unknown's avatar
unknown committed
4702 4703 4704 4705 4706 4707 4708 4709 4710
     DBUG_RETURN(2);
   memcpy(data, blob->data, complen);
 
   if (my_uncompress(data, &complen, &orglen))
   {
     my_free((char*)data, MYF(0));
     DBUG_RETURN(3);
   }

4711 4712
   *unpack_data= data;
   *unpack_len= complen;
unknown's avatar
unknown committed
4713 4714 4715 4716 4717

   DBUG_PRINT("exit", ("frmdata: %x, len: %d", *unpack_data, *unpack_len));

   DBUG_RETURN(0);
}
unknown's avatar
unknown committed
4718 4719 4720 4721 4722 4723 4724 4725

static 
int
ndb_get_table_statistics(Ndb* ndb, const char * table, 
			 Uint64* row_count, Uint64* commit_count)
{
  DBUG_ENTER("ndb_get_table_statistics");
  DBUG_PRINT("enter", ("table: %s", table));
unknown's avatar
unknown committed
4726
  NdbConnection* pTrans= ndb->startTransaction();
unknown's avatar
unknown committed
4727 4728 4729 4730
  do 
  {
    if (pTrans == NULL)
      break;
unknown's avatar
unknown committed
4731
      
unknown's avatar
unknown committed
4732 4733 4734 4735
    NdbScanOperation* pOp= pTrans->getNdbScanOperation(table);
    if (pOp == NULL)
      break;
    
4736
    if (pOp->readTuples(NdbOperation::LM_CommittedRead))
unknown's avatar
unknown committed
4737 4738 4739 4740 4741 4742 4743 4744 4745 4746
      break;
    
    int check= pOp->interpret_exit_last_row();
    if (check == -1)
      break;
    
    Uint64 rows, commits;
    pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&rows);
    pOp->getValue(NdbDictionary::Column::COMMIT_COUNT, (char*)&commits);
    
unknown's avatar
unknown committed
4747
    check= pTrans->execute(NoCommit, AbortOnError, TRUE);
unknown's avatar
unknown committed
4748 4749 4750 4751 4752
    if (check == -1)
      break;
    
    Uint64 sum_rows= 0;
    Uint64 sum_commits= 0;
4753
    while((check= pOp->nextResult(TRUE, TRUE)) == 0)
unknown's avatar
unknown committed
4754 4755 4756 4757 4758 4759 4760 4761
    {
      sum_rows+= rows;
      sum_commits+= commits;
    }
    
    if (check == -1)
      break;

4762
    pOp->close(TRUE);
unknown's avatar
unknown committed
4763

unknown's avatar
unknown committed
4764 4765 4766 4767 4768 4769 4770 4771 4772
    ndb->closeTransaction(pTrans);
    if(row_count)
      * row_count= sum_rows;
    if(commit_count)
      * commit_count= sum_commits;
    DBUG_PRINT("exit", ("records: %u commits: %u", sum_rows, sum_commits));
    DBUG_RETURN(0);
  } while(0);

unknown's avatar
unknown committed
4773
  ndb->closeTransaction(pTrans);
unknown's avatar
unknown committed
4774 4775 4776 4777
  DBUG_PRINT("exit", ("failed"));
  DBUG_RETURN(-1);
}

4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803
/*
  Create a .ndb file to serve as a placeholder indicating 
  that the table with this name is a ndb table
*/

int ha_ndbcluster::write_ndb_file()
{
  File file;
  bool error=1;
  char path[FN_REFLEN];
  
  DBUG_ENTER("write_ndb_file");
  DBUG_PRINT("enter", ("db: %s, name: %s", m_dbname, m_tabname));

  (void)strxnmov(path, FN_REFLEN, 
		 mysql_data_home,"/",m_dbname,"/",m_tabname,ha_ndb_ext,NullS);

  if ((file=my_create(path, CREATE_MODE,O_RDWR | O_TRUNC,MYF(MY_WME))) >= 0)
  {
    // It's an empty file
    error=0;
    my_close(file,MYF(0));
  }
  DBUG_RETURN(error);
}

4804
#ifdef key_multi_range
4805 4806 4807 4808 4809 4810 4811 4812
int
ha_ndbcluster::read_multi_range_first(key_multi_range **found_range_p,
				      key_multi_range *ranges, 
				      uint range_count,
				      bool sorted, 
				      handler_buffer *buffer)
{
  DBUG_ENTER("ha_ndbcluster::read_multi_range_first");
unknown's avatar
unknown committed
4813
  
4814 4815 4816
  int res;
  uint i;
  KEY* key_info= table->key_info + active_index;
4817 4818
  NDB_INDEX_TYPE index_type= get_index_type(active_index);
  ulong reclength= table->reclength;
4819 4820
  NdbOperation* op;

4821
  if (uses_blob_value(m_retrieve_all_fields))
unknown's avatar
unknown committed
4822 4823 4824 4825 4826
  {
    /**
     * blobs can't be batched currently
     */
    m_disable_multi_read= true;
unknown's avatar
unknown committed
4827 4828 4829 4830 4831
    DBUG_RETURN(handler::read_multi_range_first(found_range_p, 
						ranges, 
						range_count,
						sorted, 
						buffer));
unknown's avatar
unknown committed
4832 4833
  }

4834
  m_disable_multi_read= false;
4835 4836 4837 4838

  /**
   * Copy arguments into member variables
   */
4839 4840 4841 4842 4843
  multi_ranges= ranges;
  multi_range_count= range_count;
  multi_range_sorted= sorted;
  multi_range_buffer= buffer;

4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858
  /**
   * read multi range will read ranges as follows (if not ordered)
   *
   * input    read order
   * ======   ==========
   * pk-op 1  pk-op 1
   * pk-op 2  pk-op 2
   * range 3  range (3,5) NOTE result rows will be intermixed
   * pk-op 4  pk-op 4
   * range 5
   * pk-op 6  pk-ok 6
   
   /**
   * Variables for loop
   */
unknown's avatar
unknown committed
4859 4860
  byte *curr= (byte*)buffer->buffer;
  byte *end_of_buffer= (byte*)buffer->buffer_end;
4861 4862 4863 4864
  NdbOperation::LockMode lm= 
    (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
  const NDBTAB *tab= (const NDBTAB *) m_table;
  const NDBINDEX *unique_idx= (NDBINDEX *) m_index[active_index].unique_index;
4865
  const NDBINDEX *idx= (NDBINDEX *) m_index[active_index].index; 
4866 4867
  const NdbOperation* lastOp= m_active_trans->getLastDefinedOperation();
  NdbIndexScanOperation* scanOp= 0;
unknown's avatar
unknown committed
4868
  for(i= 0; i<range_count && curr+reclength <= end_of_buffer; i++)
4869 4870 4871 4872
  {
    switch(index_type){
    case PRIMARY_KEY_INDEX:
  pk:
4873
    {
4874
      ranges[i].range_flag |= UNIQUE_RANGE;
4875 4876 4877 4878 4879 4880 4881 4882
      if ((op= m_active_trans->getNdbOperation(tab)) && 
	  !op->readTuple(lm) && 
	  !set_primary_key(op, ranges[i].start_key.key) &&
	  !define_read_attrs(curr, op) &&
	  (op->setAbortOption(IgnoreError), true))
	curr += reclength;
      else
	ERR_RETURN(op ? op->getNdbError() : m_active_trans->getNdbError());
4883
      break;
4884 4885
    }
    break;
4886 4887
    case UNIQUE_INDEX:
  sk:
4888
    {
4889
      ranges[i].range_flag |= UNIQUE_RANGE;
4890 4891
      if ((op= m_active_trans->getNdbIndexOperation(unique_idx, tab)) && 
	  !op->readTuple(lm) && 
4892
	  !set_index_key(op, key_info, ranges[i].start_key.key) &&
4893 4894 4895 4896 4897
	  !define_read_attrs(curr, op) &&
	  (op->setAbortOption(IgnoreError), true))
	curr += reclength;
      else
	ERR_RETURN(op ? op->getNdbError() : m_active_trans->getNdbError());
4898 4899 4900 4901 4902 4903 4904 4905 4906
      break;
    }
    case PRIMARY_KEY_ORDERED_INDEX:
      if (ranges[i].start_key.length == key_info->key_length &&
	  ranges[i].start_key.flag == HA_READ_KEY_EXACT)
	goto pk;
      goto range;
    case UNIQUE_ORDERED_INDEX:
      if (ranges[i].start_key.length == key_info->key_length &&
4907 4908 4909
	  ranges[i].start_key.flag == HA_READ_KEY_EXACT &&
	  !check_null_in_key(key_info, ranges[i].start_key.key,
			     ranges[i].start_key.length))
4910 4911 4912 4913 4914 4915 4916
	goto sk;
      goto range;
    case ORDERED_INDEX:
  range:
      ranges[i].range_flag &= ~(uint)UNIQUE_RANGE;
      if (scanOp == 0)
      {
unknown's avatar
unknown committed
4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928
	if (m_multi_cursor)
	{
	  scanOp= m_multi_cursor;
	  DBUG_ASSERT(scanOp->getSorted() == sorted);
	  DBUG_ASSERT(scanOp->getLockMode() == 
		      (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type));
	  if(scanOp->reset_bounds(m_force_send))
	    DBUG_RETURN(ndb_err(m_active_trans));
	  
	  end_of_buffer -= reclength;
	}
	else if ((scanOp= m_active_trans->getNdbIndexScanOperation(idx, tab)) 
4929
		 && !scanOp->readTuples(lm, 0, parallelism, sorted, false, true) &&
unknown's avatar
unknown committed
4930 4931 4932 4933 4934
		 !define_read_attrs(end_of_buffer-reclength, scanOp))
	{
	  m_multi_cursor= scanOp;
	  m_multi_range_cursor_result_ptr= end_of_buffer-reclength;
	}
4935
	else
unknown's avatar
unknown committed
4936
	{
4937
	  ERR_RETURN(scanOp ? scanOp->getNdbError() : 
4938
		     m_active_trans->getNdbError());
unknown's avatar
unknown committed
4939
	}
4940 4941
      }
      const key_range *keys[2]= { &ranges[i].start_key, &ranges[i].end_key };
4942
      if ((res= set_bounds(scanOp, keys, i)))
4943 4944
	DBUG_RETURN(res);
      break;
4945 4946 4947
    }
  }
  
4948
  if (i != range_count)
4949
  {
4950 4951 4952 4953 4954 4955
    /**
     * Mark that we're using entire buffer (even if might not) as
     *   we haven't read all ranges for some reason
     * This as we don't want mysqld to reuse the buffer when we read
     *   the remaining ranges
     */
4956
    buffer->end_of_used_area= (byte*)buffer->buffer_end;
4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967
  }
  else
  {
    buffer->end_of_used_area= curr;
  }
  
  /**
   * Set first operation in multi range
   */
  m_current_multi_operation= 
    lastOp ? lastOp->next() : m_active_trans->getFirstDefinedOperation();
4968
  if (!(res= execute_no_commit_ie(this, m_active_trans)))
4969 4970
  {
    multi_range_curr= 0;
4971 4972 4973
    m_multi_range_defined_count= i;
    m_multi_range_result_ptr= (byte*)buffer->buffer;
    DBUG_RETURN(read_multi_range_next(found_range_p));
4974 4975 4976 4977
  }
  ERR_RETURN(m_active_trans->getNdbError());
}

unknown's avatar
unknown committed
4978 4979 4980 4981 4982 4983
#if 0
#define DBUG_MULTI_RANGE(x) printf("read_multi_range_next: case %d\n", x);
#else
#define DBUG_MULTI_RANGE(x)
#endif

4984
int
4985
ha_ndbcluster::read_multi_range_next(key_multi_range ** multi_range_found_p)
4986 4987
{
  DBUG_ENTER("ha_ndbcluster::read_multi_range_next");
4988
  if (m_disable_multi_read)
4989
  {
4990
    DBUG_RETURN(handler::read_multi_range_next(multi_range_found_p));
4991
  }
4992
  
4993
  int res;
4994
  int range_no;
4995 4996
  ulong reclength= table->reclength;
  const NdbOperation* op= m_current_multi_operation;
4997
  for(;multi_range_curr < m_multi_range_defined_count; multi_range_curr++)
4998
  {
4999
    if (multi_ranges[multi_range_curr].range_flag & UNIQUE_RANGE)
5000
    {
5001
      if (op->getNdbError().code == 0)
5002 5003 5004 5005
	goto found_next;
      
      op= m_active_trans->getNextCompletedOperation(op);
      m_multi_range_result_ptr += reclength;
5006
      continue;
5007
    } 
5008
    else if (m_multi_cursor && !multi_range_sorted)
5009
    {
unknown's avatar
unknown committed
5010 5011
      DBUG_MULTI_RANGE(1);
      if ((res= fetch_next(m_multi_cursor)) == 0)
5012
      {
unknown's avatar
unknown committed
5013
	DBUG_MULTI_RANGE(2);
5014 5015 5016 5017 5018 5019 5020 5021
	range_no= m_multi_cursor->get_range_no();
	goto found;
      } 
      else
      {
	goto close_scan;
      }
    }
unknown's avatar
unknown committed
5022
    else if (m_multi_cursor && multi_range_sorted)
5023
    {
unknown's avatar
unknown committed
5024 5025 5026
      if (m_active_cursor && (res= fetch_next(m_multi_cursor)))
      {
	DBUG_MULTI_RANGE(3);
5027
	goto close_scan;
unknown's avatar
unknown committed
5028
      }
5029
      
5030 5031 5032
      range_no= m_multi_cursor->get_range_no();
      if (range_no == multi_range_curr)
      {
unknown's avatar
unknown committed
5033
	DBUG_MULTI_RANGE(4);
5034 5035 5036
        // return current row
	goto found;
      }
unknown's avatar
unknown committed
5037
      else if (range_no > (int)multi_range_curr)
5038
      {
unknown's avatar
unknown committed
5039
	DBUG_MULTI_RANGE(5);
5040 5041 5042 5043 5044 5045
	// wait with current row
	m_active_cursor= 0;
	continue;
      }
      else 
      {
unknown's avatar
unknown committed
5046
	DBUG_MULTI_RANGE(6);
5047 5048
	// First fetch from cursor
	DBUG_ASSERT(range_no == -1);
unknown's avatar
unknown committed
5049 5050 5051 5052
	if((res= m_multi_cursor->nextResult(true)))
	{
	  goto close_scan;
	}
5053 5054 5055
	multi_range_curr--; // Will be increased in for-loop
	continue;
      }
5056
    }
unknown's avatar
unknown committed
5057
    else /** m_multi_cursor == 0 */
5058
    {
unknown's avatar
unknown committed
5059
      DBUG_MULTI_RANGE(7);
5060 5061 5062 5063
      /**
       * Corresponds to range 5 in example in read_multi_range_first
       */
      (void)1;
5064
      continue;
5065
    }
5066 5067 5068 5069 5070
    
    DBUG_ASSERT(false); // Should only get here via goto's
close_scan:
    if (res == 1)
    {
unknown's avatar
unknown committed
5071
      m_multi_cursor->close();
5072
      m_active_cursor= m_multi_cursor= 0;
unknown's avatar
unknown committed
5073
      DBUG_MULTI_RANGE(8);
5074 5075 5076 5077 5078 5079 5080
      continue;
    } 
    else 
    {
      DBUG_RETURN(ndb_err(m_active_trans));
    }
  }
5081 5082
  
  if (multi_range_curr == multi_range_count)
5083
    DBUG_RETURN(HA_ERR_END_OF_FILE);
5084
  
5085 5086 5087
  /**
   * Read remaining ranges
   */
5088
  uint left= multi_range_count - multi_range_curr;
5089 5090 5091 5092 5093
  DBUG_RETURN(read_multi_range_first(multi_range_found_p, 
				     multi_ranges + multi_range_curr,
				     left, 
				     multi_range_sorted,
				     multi_range_buffer));
5094 5095
  
found:
5096 5097 5098
  /**
   * Found a record belonging to a scan
   */
5099
  m_active_cursor= m_multi_cursor;
5100
  * multi_range_found_p= multi_ranges + range_no;
5101 5102
  memcpy(table->record[0], m_multi_range_cursor_result_ptr, reclength);
  setup_recattr(m_active_cursor->getFirstRecAttr());
5103 5104 5105
  unpack_record(table->record[0]);
  table->status= 0;     
  DBUG_RETURN(0);
5106
  
5107
found_next:
5108 5109 5110 5111
  /**
   * Found a record belonging to a pk/index op,
   *   copy result and move to next to prepare for next call
   */
5112 5113
  * multi_range_found_p= multi_ranges + multi_range_curr;
  memcpy(table->record[0], m_multi_range_result_ptr, reclength);
5114
  setup_recattr(op->getFirstRecAttr());
5115
  unpack_record(table->record[0]);
5116 5117
  table->status= 0;
  
5118
  multi_range_curr++;
5119
  m_current_multi_operation= m_active_trans->getNextCompletedOperation(op);
5120 5121
  m_multi_range_result_ptr += reclength;
  DBUG_RETURN(0);
5122 5123
}

5124 5125 5126 5127 5128 5129 5130 5131
int
ha_ndbcluster::setup_recattr(const NdbRecAttr* curr)
{
  DBUG_ENTER("setup_recattr");

  Field **field, **end;
  NdbValue *value= m_value;
  
5132
  end= table->field + table->fields;
5133 5134 5135 5136 5137 5138
  
  for (field= table->field; field < end; field++, value++)
  {
    if ((* value).ptr)
    {
      DBUG_ASSERT(curr != 0);
5139 5140
      (* value).rec= curr;
      curr= curr->next();
5141 5142 5143
    }
  }
  
unknown's avatar
unknown committed
5144
  DBUG_RETURN(0);
5145
}
5146
#endif
5147

unknown's avatar
unknown committed
5148
#endif /* HAVE_NDBCLUSTER_DB */