NdbOperation.hpp 36.7 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/* Copyright (C) 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 */

#ifndef NdbOperation_H
#define NdbOperation_H

#include <ndb_types.h>
21 22 23
#include "ndbapi_limits.h"
#include "NdbError.hpp"
#include "NdbReceiver.hpp"
unknown's avatar
unknown committed
24
#include "NdbDictionary.hpp"
25 26 27 28 29

class Ndb;
class NdbApiSignal;
class NdbRecAttr;
class NdbOperation;
30
class NdbTransaction;
31
class NdbColumnImpl;
unknown's avatar
unknown committed
32
class NdbBlob;
33 34 35 36 37 38 39

/**
 * @class NdbOperation
 * @brief Class of operations for use in transactions.  
 */
class NdbOperation
{
40
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
41
  friend class Ndb;
42
  friend class NdbTransaction;
43 44 45 46
  friend class NdbScanOperation;
  friend class NdbScanReceiver;
  friend class NdbScanFilter;
  friend class NdbScanFilterImpl;
unknown's avatar
unknown committed
47
  friend class NdbReceiver;
unknown's avatar
unknown committed
48
  friend class NdbBlob;
49 50
#endif

51 52 53 54 55 56
public:
  /** 
   * @name Define Standard Operation Type
   * @{
   */

57 58 59 60 61 62 63 64 65 66 67 68 69
  /**
   * Lock when performing read
   */
  
  enum LockMode {
    LM_Read = 0,
    LM_Exclusive = 1,
    LM_CommittedRead = 2,
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
    LM_Dirty = 2
#endif
  };

70 71
  /**
   * Define the NdbOperation to be a standard operation of type insertTuple.
72
   * When calling NdbTransaction::execute, this operation 
73 74 75 76 77 78 79 80
   * adds a new tuple to the table.
   *
   * @return 0 if successful otherwise -1.
   */		
  virtual int 			insertTuple();
		
  /**
   * Define the NdbOperation to be a standard operation of type updateTuple.
81
   * When calling NdbTransaction::execute, this operation 
82 83 84 85 86 87 88 89
   * updates a tuple in the table.
   *
   * @return 0 if successful otherwise -1.
   */  
  virtual int 			updateTuple();

  /**
   * Define the NdbOperation to be a standard operation of type writeTuple.
90
   * When calling NdbTransaction::execute, this operation 
91 92 93 94 95 96 97 98 99
   * writes a tuple to the table.
   * If the tuple exists, it updates it, otherwise an insert takes place.
   *
   * @return 0 if successful otherwise -1.
   */  
  virtual int 			writeTuple();

  /**
   * Define the NdbOperation to be a standard operation of type deleteTuple.
100
   * When calling NdbTransaction::execute, this operation 
101 102 103 104 105 106
   * delete a tuple.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int 			deleteTuple();
		
107 108
  /**
   * Define the NdbOperation to be a standard operation of type readTuple.
109
   * When calling NdbTransaction::execute, this operation 
110 111 112 113 114 115
   * reads a tuple.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int 			readTuple(LockMode);

unknown's avatar
unknown committed
116
#ifndef DOXYGEN_SHOULD_SKIP_DEPRECATED
117 118
  /**
   * Define the NdbOperation to be a standard operation of type readTuple.
119
   * When calling NdbTransaction::execute, this operation 
120 121 122 123 124 125 126 127 128
   * reads a tuple.
   *
   * @return 0 if successful otherwise -1.
   */  
  virtual int 			readTuple();				

  /**
   * Define the NdbOperation to be a standard operation of type 
   * readTupleExclusive.
129
   * When calling NdbTransaction::execute, this operation 
130 131 132 133 134 135 136 137 138
   * read a tuple using an exclusive lock.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int 			readTupleExclusive();

  /**
   * Define the NdbOperation to be a standard operation of type 
   * simpleRead.
139
   * When calling NdbTransaction::execute, this operation 
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157
   * reads an existing tuple (using shared read lock), 
   * but releases lock immediately after read.
   *
   * @note  Using this operation twice in the same transaction
   *        may produce different results (e.g. if there is another
   *        transaction which updates the value between the
   *        simple reads).
   *
   * Note that simpleRead can read the value from any database node while
   * standard read always read the value on the database node which is 
   * primary for the record.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int			simpleRead();

  /**
   * Define the NdbOperation to be a standard operation of type committedRead.
158
   * When calling NdbTransaction::execute, this operation 
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
   * read latest committed value of the record.
   *
   * This means that if another transaction is updating the 
   * record, then the current transaction will not wait.  
   * It will instead use the latest committed value of the 
   * record.
   * dirtyRead is a deprecated name for committedRead
   *
   * @return 0 if successful otherwise -1.
   * @depricated
   */
  virtual int			dirtyRead();

  /**
   * Define the NdbOperation to be a standard operation of type committedRead.
174
   * When calling NdbTransaction::execute, this operation 
175 176 177 178 179 180 181 182 183 184 185 186 187
   * read latest committed value of the record.
   *
   * This means that if another transaction is updating the 
   * record, then the current transaction will not wait.  
   * It will instead use the latest committed value of the 
   * record.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int			committedRead();

  /**
   * Define the NdbOperation to be a standard operation of type dirtyUpdate.
188
   * When calling NdbTransaction::execute, this operation 
189 190 191 192 193 194 195 196
   * updates without two-phase commit.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int			dirtyUpdate();

  /**
   * Define the NdbOperation to be a standard operation of type dirtyWrite.
197
   * When calling NdbTransaction::execute, this operation 
198 199 200 201 202
   * writes without two-phase commit.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int			dirtyWrite();
203
#endif
204

205
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
  /** @} *********************************************************************/
  /** 
   * @name Define Interpreted Program Operation Type
   * @{
   */

  /**
   * Update a tuple using an interpreted program.
   *
   * @return 0 if successful otherwise -1.
   */  
  virtual int			interpretedUpdateTuple();
		
  /**
   * Delete a tuple using an interpreted program.
   *
   * @return 0 if successful otherwise -1.
   */
  virtual int			interpretedDeleteTuple();
225
#endif
226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293

  /** @} *********************************************************************/

  /** 
   * @name Specify Search Conditions
   * @{
   */
  /**
   * Define a search condition with equality.
   * The condition is true if the attribute has the given value.
   * To set search conditions on multiple attributes,
   * use several equals (then all of them must be satisfied for the
   * tuple to be selected).
   *
   * @note There are 10 versions of NdbOperation::equal with
   *       slightly different parameters.
   *
   * @note When using NdbOperation::equal with a string (char *) as
   *       second argument, the string needs to be padded with 
   *       zeros in the following sense:
   *       @code
   *       // Equal needs strings to be padded with zeros
   *       strncpy(buf, str, sizeof(buf));
   *       NdbOperation->equal("Attr1", buf);
   *       @endcode
   * 
   * @param   anAttrName   Attribute name 
   * @param   aValue       Attribute value.
   * @param   len          Attribute length expressed in bytes.
   * @return               -1 if unsuccessful. 
   */
  int  equal(const char* anAttrName, const char* aValue, Uint32 len = 0);
  int  equal(const char* anAttrName, Uint32 aValue);	
  int  equal(const char* anAttrName, Int32 aValue);	
  int  equal(const char* anAttrName, Int64 aValue);	
  int  equal(const char* anAttrName, Uint64 aValue);
  int  equal(Uint32 anAttrId, const char* aValue, Uint32 len = 0);
  int  equal(Uint32 anAttrId, Int32 aValue);	
  int  equal(Uint32 anAttrId, Uint32 aValue);	
  int  equal(Uint32 anAttrId, Int64 aValue);	
  int  equal(Uint32 anAttrId, Uint64 aValue);
	
  /** @} *********************************************************************/
  /** 
   * @name Specify Attribute Actions for Operations
   * @{
   */

  /**
   * Defines a retrieval operation of an attribute value.
   * The NDB API allocate memory for the NdbRecAttr object that
   * will hold the returned attribute value. 
   *
   * @note Note that it is the applications responsibility
   *       to allocate enough memory for aValue (if non-NULL).
   *       The buffer aValue supplied by the application must be
   *       aligned appropriately.  The buffer is used directly
   *       (avoiding a copy penalty) only if it is aligned on a
   *       4-byte boundary and the attribute size in bytes
   *       (i.e. NdbRecAttr::attrSize times NdbRecAttr::arraySize is
   *       a multiple of 4).
   *
   * @note There are two versions of NdbOperation::getValue with
   *       slightly different parameters.
   *
   * @note This method does not fetch the attribute value from 
   *       the database!  The NdbRecAttr object returned by this method 
   *       is <em>not</em> readable/printable before the 
294
   *       transaction has been executed with NdbTransaction::execute.
295 296 297 298 299 300 301 302 303 304
   *
   * @param anAttrName  Attribute name 
   * @param aValue      If this is non-NULL, then the attribute value 
   *                    will be returned in this parameter.<br>
   *                    If NULL, then the attribute value will only 
   *                    be stored in the returned NdbRecAttr object.
   * @return            An NdbRecAttr object to hold the value of 
   *                    the attribute, or a NULL pointer 
   *                    (indicating error).
   */
unknown's avatar
unknown committed
305 306 307
  NdbRecAttr* getValue(const char* anAttrName, char* aValue = 0);
  NdbRecAttr* getValue(Uint32 anAttrId, char* aValue = 0);
  NdbRecAttr* getValue(const NdbDictionary::Column*, char* val = 0);
308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354
  
  /**
   * Define an attribute to set or update in query.
   *
   * To set a NULL value, use the following construct:
   * @code
   *   setValue("ATTR_NAME", (char*)NULL);
   * @endcode
   * 
   * There are a number of NdbOperation::setValue methods that 
   * take a certain type as input
   * (pass by value rather than passing a pointer). 
   * As the interface is currently implemented it is the responsibility 
   * of the application programmer to use the correct types.
   *
   * The NDB API will however check that the application sends
   * a correct length to the interface as given in the length parameter.  
   * The passing of char* as the value can contain any type or 
   * any type of array. 
   * If length is not provided or set to zero, 
   * then the API will assume that the pointer
   * is correct and not bother with checking it.
   *
   * @note There are 14 versions of NdbOperation::setValue with
   *       slightly different parameters.
   * 
   * @param anAttrName     Name (or Id) of attribute.
   * @param aValue         Attribute value to set.
   * @param len            Attribute length expressed in bytes.
   * @return               -1 if unsuccessful.
   */
  virtual int  setValue(const char* anAttrName, const char* aValue, 
			Uint32 len = 0);
  virtual int  setValue(const char* anAttrName, Int32 aValue);
  virtual int  setValue(const char* anAttrName, Uint32 aValue);
  virtual int  setValue(const char* anAttrName, Uint64 aValue);
  virtual int  setValue(const char* anAttrName, Int64 aValue);
  virtual int  setValue(const char* anAttrName, float aValue);
  virtual int  setValue(const char* anAttrName, double aValue);

  virtual int  setValue(Uint32 anAttrId, const char* aValue, Uint32 len = 0);
  virtual int  setValue(Uint32 anAttrId, Int32 aValue);
  virtual int  setValue(Uint32 anAttrId, Uint32 aValue);
  virtual int  setValue(Uint32 anAttrId, Uint64 aValue);
  virtual int  setValue(Uint32 anAttrId, Int64 aValue);
  virtual int  setValue(Uint32 anAttrId, float aValue);
  virtual int  setValue(Uint32 anAttrId, double aValue);
unknown's avatar
unknown committed
355 356 357 358 359 360 361 362 363 364 365

  /**
   * This method replaces getValue/setValue for blobs.  It creates
   * a blob handle NdbBlob.  A second call with same argument returns
   * the previously created handle.  The handle is linked to the
   * operation and is maintained automatically.
   *
   * See NdbBlob for details.
   */
  virtual NdbBlob* getBlobHandle(const char* anAttrName);
  virtual NdbBlob* getBlobHandle(Uint32 anAttrId);
366
 
367
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
  /** @} *********************************************************************/
  /** 
   * @name Specify Interpreted Program Instructions
   * @{
   */

  /**
   * Interpreted program instruction: Add a value to an attribute.
   *
   * @note Destroys the contents of registers 6 and 7.
   *       (The instruction uses these registers for its operation.)
   *
   * @note There are four versions of NdbOperation::incValue with
   *       slightly different parameters.
   *
   * @param anAttrName     Attribute name.
   * @param aValue         Value to add.
   * @return               -1 if unsuccessful.
   */
  int   incValue(const char* anAttrName, Uint32 aValue);
  int   incValue(const char* anAttrName, Uint64 aValue);
  int   incValue(Uint32 anAttrId, Uint32 aValue);
  int   incValue(Uint32 anAttrId, Uint64 aValue);

  /**
   * Interpreted program instruction:
   * Subtract a value from an attribute in an interpreted operation.
   *
   * @note Destroys the contents of registers 6 and 7.
   *       (The instruction uses these registers for its operation.)
   *
   * @note There are four versions of NdbOperation::subValue with
   *       slightly different parameters.
   *
   * @param anAttrName    Attribute name.
   * @param aValue        Value to subtract.
   * @return              -1 if unsuccessful.
   */
  int   subValue(const char* anAttrName, Uint32 aValue);
  int   subValue(const char* anAttrName, Uint64 aValue);
  int   subValue(Uint32 anAttrId, Uint32 aValue);
  int   subValue(Uint32 anAttrId, Uint64 aValue);

  /**
   * Interpreted program instruction:
   * Define a jump label in an interpreted operation.
   *
   * @note The labels are automatically numbered starting with 0.  
   *       The parameter used by NdbOperation::def_label should 
   *       match the automatic numbering to make it easier to 
   *       debug the interpreted program.
   * 
   * @param labelNumber   Label number.
   * @return              -1 if unsuccessful.
   */
  int   def_label(int labelNumber);

  /**
   * Interpreted program instruction:
   * Add two registers into a third.
   *
   * @param RegSource1   First register.
   * @param RegSource2   Second register.
   * @param RegDest      Destination register where the result will be stored.
   * @return -1 if unsuccessful.
   */
  int   add_reg(Uint32 RegSource1, Uint32 RegSource2, Uint32 RegDest);

  /**
   * Interpreted program instruction:
   * Substract RegSource1 from RegSource2 and put the result in RegDest.
   *
   * @param RegSource1   First register.
   * @param RegSource2   Second register.
   * @param RegDest      Destination register where the result will be stored.
   * @return             -1 if unsuccessful.
   */
  int   sub_reg(Uint32 RegSource1, Uint32 RegSource2, Uint32 RegDest);

  /**
   * Interpreted program instruction:
   * Load a constant into a register.
   *
   * @param RegDest      Destination register.
   * @param Constant     Value to load.
   * @return             -1 if unsuccessful.
   */
  int   load_const_u32(Uint32 RegDest, Uint32 Constant);
  int   load_const_u64(Uint32 RegDest, Uint64 Constant);

  /**
   * Interpreted program instruction:
   * Load NULL value into a register.
   *
   * @param RegDest      Destination register.
   * @return             -1 if unsuccessful.
   */ 
  int   load_const_null(Uint32 RegDest);

  /**
   * Interpreted program instruction:
   * Read an attribute into a register.
   *
   * @param anAttrName   Attribute name.
   * @param RegDest      Destination register.
   * @return             -1 if unsuccessful.
   */
  int   read_attr(const char* anAttrName, Uint32 RegDest);

  /**
   * Interpreted program instruction:
   * Write an attribute from a register. 
   *
   * @param anAttrName   Attribute name.
   * @param RegSource    Source register.
   * @return             -1 if unsuccessful.
   */
  int   write_attr(const char* anAttrName, Uint32 RegSource);

  /**
   * Interpreted program instruction:
   * Read an attribute into a register.
   *
   * @param anAttrId the attribute id.
   * @param RegDest the destination register.
   * @return -1 if unsuccessful.
   */
  int   read_attr(Uint32 anAttrId, Uint32 RegDest);

  /**
   * Interpreted program instruction:
   * Write an attribute from a register. 
   *
   * @param anAttrId the attribute id.
   * @param RegSource the source register.
   * @return -1 if unsuccessful.
   */
  int   write_attr(Uint32 anAttrId, Uint32 RegSource);

  /**
   * Interpreted program instruction:
   * Define a search condition. Last two letters in the function name 
   * describes the search condition.
   * The condition compares RegR with RegL and therefore appears
   * to be reversed.
   *
   * - ge RegR >= RegL
   * - gt RegR >  RegL
   * - le RegR <= RegL
   * - lt RegR <  RegL
   * - eq RegR =  RegL
   * - ne RegR <> RegL
   *
   * @param RegLvalue left value. 
   * @param RegRvalue right value.
   * @param Label the label to jump to.
   * @return -1 if unsuccessful.
   */
  int   branch_ge(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);
  int   branch_gt(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);
  int   branch_le(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);
  int   branch_lt(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);
  int   branch_eq(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);
  int   branch_ne(Uint32 RegLvalue, Uint32 RegRvalue, Uint32 Label);

  /**
   * Interpreted program instruction:
   * Jump to Label if RegLvalue is not NULL.
   *
   * @param RegLvalue the value to check.
   * @param Label the label to jump to.
   * @return -1 if unsuccessful. 
   */
  int   branch_ne_null(Uint32 RegLvalue, Uint32 Label);

  /**
   * Interpreted program instruction:
   * Jump to Label if RegLvalue is equal to NULL.
   *
   * @param  RegLvalue  Value to check.
   * @param  Label      Label to jump to.
   * @return -1 if unsuccessful. 
   */
  int   branch_eq_null(Uint32 RegLvalue, Uint32 Label);

  /**
   * Interpreted program instruction:
   * Jump to Label.
   *
   * @param  Label  Label to jump to.
   * @return -1 if unsuccessful.
   */
  int   branch_label(Uint32 Label);

  /**
   * Interpreted program instruction:  branch after memcmp
   * @param  ColId   Column to check
   * @param  Label   Label to jump to
   * @return -1 if unsuccessful
   */
  int branch_col_eq_null(Uint32 ColId, Uint32 Label);
  int branch_col_ne_null(Uint32 ColId, Uint32 Label);

  /**
   * Interpreted program instruction:  branch after memcmp
   * @param  ColId   column to check
   * @param  val     search value
   * @param  len     length of search value   
   * @param  nopad   force non-padded comparison for a Char column
   * @param  Label   label to jump to
   * @return -1 if unsuccessful
   */
  int branch_col_eq(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_ne(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_lt(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_le(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_gt(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_ge(Uint32 ColId, const char * val, Uint32 len, 
		    bool nopad, Uint32 Label);
  int branch_col_like(Uint32 ColId, const char *, Uint32 len, 
		      bool nopad, Uint32 Label);
  int branch_col_notlike(Uint32 ColId, const char *, Uint32 len, 
			 bool nopad, Uint32 Label);
  
  /**
   * Interpreted program instruction: Exit with Ok
   *
   * For scanning transactions,
   * end interpreted operation and return the row to the application.
   *
   * For non-scanning transactions,
   * exit interpreted program.
   *
   * @return -1 if unsuccessful.
   */
  int	interpret_exit_ok();

  /**
   * Interpreted program instruction: Exit with Not Ok
   *
   * For scanning transactions, 
   * continue with the next row without returning the current row.
   *
   * For non-scanning transactions,
   * abort the whole transaction.
   *
   * @note A method also exists without the error parameter.
   * 
   * @param ErrorCode   An error code given by the application programmer.
   * @return            -1 if unsuccessful.
   */
  int   interpret_exit_nok(Uint32 ErrorCode);
  int   interpret_exit_nok();

627 628 629 630 631 632 633 634 635 636 637 638 639 640
  
  /**
   * Interpreted program instruction:
   *
   * For scanning transactions, 
   * return this row, but no more from this fragment
   *
   * For non-scanning transactions,
   * abort the whole transaction.
   *
   * @return            -1 if unsuccessful.
   */
  int interpret_exit_last_row();
  
641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665
  /**
   * Interpreted program instruction:
   * Define a subroutine in an interpreted operation.
   *
   * @param SubroutineNumber the subroutine number.
   * @return -1 if unsuccessful.
   */
  int   def_subroutine(int SubroutineNumber);

  /**
   * Interpreted program instruction:
   * Call a subroutine.
   *
   * @param Subroutine the subroutine to call.
   * @return -1 if unsuccessful. 
   */
  int   call_sub(Uint32 Subroutine);

  /**
   * Interpreted program instruction:
   * End a subroutine.
   *
   * @return -1 if unsuccessful. 
   */
  int   ret_sub();
666
#endif
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688

  /** @} *********************************************************************/

  /** 
   * @name Error Handling
   * @{
   */

  /**
   * Get the latest error code.
   *
   * @return error code.
   */
  const NdbError & getNdbError() const;

  /**
   * Get the method number where the error occured.
   * 
   * @return method number where the error occured.
   */
  int getNdbErrorLine();

unknown's avatar
unknown committed
689 690 691 692 693
  /**
   * Get table name of this operation.
   */
  const char* getTableName() const;

694 695
  /** @} *********************************************************************/

696
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
697 698 699 700 701 702 703 704 705 706 707 708 709 710 711
  /**
   * Type of operation
   */
  enum OperationType { 
    ReadRequest = 0,              ///< Read operation
    UpdateRequest = 1,            ///< Update Operation
    InsertRequest = 2,            ///< Insert Operation
    DeleteRequest = 3,            ///< Delete Operation
    WriteRequest = 4,             ///< Write Operation
    ReadExclusive = 5,            ///< Read exclusive
    OpenScanRequest,              ///< Scan Operation
    OpenRangeScanRequest,         ///< Range scan operation
    NotDefined2,                  ///< Internal for debugging
    NotDefined                    ///< Internal for debugging
  };
712
#endif
713

714 715 716
  /**
   * Return lock mode for operation
   */
unknown's avatar
unknown committed
717 718
  LockMode getLockMode() const { return theLockMode; }

719
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
720 721
  void setAbortOption(Int8 ao) { m_abortOption = ao; }
  
unknown's avatar
unknown committed
722
  /**
723
   * Set/get distribution/partition key
unknown's avatar
unknown committed
724
   */
725 726 727 728
  void setPartitionId(Uint32 id);
  void setPartitionHash(Uint32 key);
  void setPartitionHash(const Uint64 *, Uint32 len);
  Uint32 getPartitionId() const;
729
#endif
730 731
protected:
  int handle_distribution_key(const Uint64 *, Uint32 len);
732 733 734 735 736 737 738 739 740 741 742 743 744 745
protected:
/******************************************************************************
 * These are the methods used to create and delete the NdbOperation objects.
 *****************************************************************************/
  			NdbOperation(Ndb* aNdb);	
  			virtual ~NdbOperation();

  bool                  needReply();
/******************************************************************************
 * These methods are service routines used by the other NDB API classes.
 *****************************************************************************/
//--------------------------------------------------------------
// Initialise after allocating operation to a transaction		      
//--------------------------------------------------------------
746
  int init(const class NdbTableImpl*, NdbTransaction* aCon);
unknown's avatar
unknown committed
747
  void initInterpreter();
748 749 750

  void	next(NdbOperation*);		// Set next pointer		      
  NdbOperation*	    next();	        // Get next pointer		       
751
public:
752
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
753
  const NdbOperation* next() const;
754
  const NdbRecAttr* getFirstRecAttr() const;
755
#endif
756
protected:
757

758 759
  enum OperationStatus
  { 
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
    Init,                       
    OperationDefined,
    TupleKeyDefined,
    GetValue,
    SetValue,
    ExecInterpretedValue,
    SetValueInterpreted,
    FinalGetValue,
    SubroutineExec,
    SubroutineEnd,
    WaitResponse,
    WaitCommitResponse,
    Finished,
    ReceiveFinished
  };

776 777 778 779
  OperationStatus   Status();	         	// Read the status information
  
  void		    Status(OperationStatus);    // Set the status information

780
  void		    NdbCon(NdbTransaction*);	// Set reference to connection
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
  						// object.

  virtual void	    release();			// Release all operations 
                                                // connected to
					      	// the operations object.      
  void		    setStartIndicator();

/******************************************************************************
 * The methods below is the execution part of the NdbOperation
 * class. This is where the NDB signals are sent and received. The
 * operation can send TC[KEY/INDX]REQ, [INDX]ATTRINFO. 
 * It can receive TC[KEY/INDX]CONF, TC[KEY/INDX]REF, [INDX]ATTRINFO. 
 * When an operation is received in its fulness or a refuse message 
 * was sent, then the connection object is told about this situation.
 *****************************************************************************/

  int    doSend(int ProcessorId, Uint32 lastFlag);
  virtual int	 prepareSend(Uint32  TC_ConnectPtr,
                             Uint64  TransactionId);
  virtual void   setLastFlag(NdbApiSignal* signal, Uint32 lastFlag);
    
  int	 prepareSendInterpreted();            // Help routine to prepare*
   
  int	 receiveTCKEYREF(NdbApiSignal*); 

unknown's avatar
unknown committed
806
  int	 checkMagicNumber(bool b = true); // Verify correct object
807 808 809 810 811 812 813

  int    checkState_TransId(NdbApiSignal* aSignal);

/******************************************************************************
 *	These are support methods only used locally in this class.
******************************************************************************/

unknown's avatar
unknown committed
814 815
  virtual int equal_impl(const NdbColumnImpl*,const char* aValue, Uint32 len);
  virtual NdbRecAttr* getValue_impl(const NdbColumnImpl*, char* aValue = 0);
816
  int setValue(const NdbColumnImpl* anAttrObject, const char* aValue, Uint32 len);
817
  NdbBlob* getBlobHandle(NdbTransaction* aCon, const NdbColumnImpl* anAttrObject);
818 819 820 821 822 823 824 825 826 827 828
  int incValue(const NdbColumnImpl* anAttrObject, Uint32 aValue);
  int incValue(const NdbColumnImpl* anAttrObject, Uint64 aValue);
  int subValue(const NdbColumnImpl* anAttrObject, Uint32 aValue);
  int subValue(const NdbColumnImpl* anAttrObject, Uint64 aValue);
  int read_attr(const NdbColumnImpl* anAttrObject, Uint32 RegDest);
  int write_attr(const NdbColumnImpl* anAttrObject, Uint32 RegSource);
  int branch_reg_reg(Uint32 type, Uint32, Uint32, Uint32);
  int branch_col(Uint32 type, Uint32, const char *, Uint32, bool, Uint32 Label);
  int branch_col_null(Uint32 type, Uint32 col, Uint32 Label);
  
  // Handle ATTRINFO signals   
unknown's avatar
unknown committed
829 830 831 832 833 834
  int insertATTRINFO(Uint32 aData);
  int insertATTRINFOloop(const Uint32* aDataPtr, Uint32 aLength);
  
  int insertKEYINFO(const char* aValue,	
		    Uint32 aStartPosition,	
		    Uint32 aKeyLenInByte);
835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
  
  virtual void setErrorCode(int aErrorCode);
  virtual void setErrorCodeAbort(int aErrorCode);

  void        handleFailedAI_ElemLen();	   // When not all attribute data
                                           // were received

  int	      incCheck(const NdbColumnImpl* anAttrObject);
  int	      initial_interpreterCheck();
  int	      intermediate_interpreterCheck();
  int	      read_attrCheck(const NdbColumnImpl* anAttrObject);
  int	      write_attrCheck(const NdbColumnImpl* anAttrObject);
  int	      labelCheck();
  int	      insertCall(Uint32 aCall);
  int	      insertBranch(Uint32 aBranch);

  Uint32 ptr2int() { return theReceiver.getId(); };

unknown's avatar
unknown committed
853 854
  // get table or index key from prepared signals
  int getKeyFromTCREQ(Uint32* data, unsigned size);
unknown's avatar
unknown committed
855

856 857 858 859 860 861 862 863 864 865
/******************************************************************************
 * These are the private variables that are defined in the operation objects.
 *****************************************************************************/

  NdbReceiver theReceiver;

  NdbError theError;			// Errorcode	       
  int 	   theErrorLine;		// Error line       

  Ndb*		   theNdb;	      	// Point back to the Ndb object.
866
  NdbTransaction*   theNdbCon;	       	// Point back to the connection object.
867
  NdbOperation*	   theNext;	       	// Next pointer to operation.
868 869 870 871 872 873

  union {
    NdbApiSignal* theTCREQ;		// The TC[KEY/INDX]REQ signal object
    NdbApiSignal* theSCAN_TABREQ;
  };

874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895
  NdbApiSignal*	   theFirstATTRINFO;	// The first ATTRINFO signal object 
  NdbApiSignal*	   theCurrentATTRINFO;	// The current ATTRINFO signal object  
  Uint32	   theTotalCurrAI_Len;	// The total number of attribute info
  		      			// words currently defined    
  Uint32	   theAI_LenInCurrAI;	// The number of words defined in the
		      		     	// current ATTRINFO signal
  NdbApiSignal*	   theLastKEYINFO;	// The first KEYINFO signal object 

  class NdbLabel*	    theFirstLabel;
  class NdbLabel*	    theLastLabel;
  class NdbBranch*	    theFirstBranch;
  class NdbBranch*	    theLastBranch;
  class NdbCall*	    theFirstCall;
  class NdbCall*	    theLastCall;
  class NdbSubroutine*    theFirstSubroutine;
  class NdbSubroutine*    theLastSubroutine;
  Uint32	    theNoOfLabels;
  Uint32	    theNoOfSubroutines;

  Uint32*           theKEYINFOptr;       // Pointer to where to write KEYINFO
  Uint32*           theATTRINFOptr;      // Pointer to where to write ATTRINFO

896 897
  const class NdbTableImpl* m_currentTable; // The current table
  const class NdbTableImpl* m_accessTable;  // Index table (== current for pk)
898 899

  // Set to TRUE when a tuple key attribute has been defined. 
900
  Uint32	    theTupleKeyDefined[NDB_MAX_NO_OF_ATTRIBUTES_IN_KEY][3];
901

902
  Uint32	    theTotalNrOfKeyWordInSignal;     // The total number of
903 904
  						     // keyword in signal.

905 906 907 908 909
  Uint32	    theTupKeyLen;	// Length of the tuple key in words
		       		        // left until done
  Uint8	theNoOfTupKeyLeft;  // The number of tuple key attributes
  OperationType	theOperationType;        // Read Request, Update Req......   
  
unknown's avatar
unknown committed
910
  LockMode        theLockMode;	   // Can be set to WRITE if read operation 
911
  OperationStatus theStatus;	   // The status of the operation.	
912
  
913 914 915
  Uint32         theMagicNumber;  // Magic number to verify that object 
                                   // is correct
  Uint32 theScanInfo;      	   // Scan info bits (take over flag etc)
unknown's avatar
unknown committed
916
  Uint32 theDistributionKey;       // Distribution Key size if used
917 918 919 920 921 922 923

  Uint32 theSubroutineSize;	   // Size of subroutines for interpretation
  Uint32 theInitialReadSize;	   // Size of initial reads for interpretation
  Uint32 theInterpretedSize;	   // Size of interpretation
  Uint32 theFinalUpdateSize;	   // Size of final updates for interpretation
  Uint32 theFinalReadSize;	   // Size of final reads for interpretation

924 925 926 927 928 929
  Uint8  theStartIndicator;	 // Indicator of whether start operation
  Uint8  theCommitIndicator;	 // Indicator of whether commit operation
  Uint8  theSimpleIndicator;	 // Indicator of whether simple operation
  Uint8  theDirtyIndicator;	 // Indicator of whether dirty operation
  Uint8  theInterpretIndicator;  // Indicator of whether interpreted operation
  Int8  theDistrKeyIndicator_;    // Indicates whether distr. key is used
930 931 932 933 934

  Uint16 m_tcReqGSN;
  Uint16 m_keyInfoGSN;
  Uint16 m_attrInfoGSN;

unknown's avatar
unknown committed
935 936
  // Blobs in this operation
  NdbBlob* theBlobList;
937

938 939 940 941 942 943 944
  /*
   * Abort option per operation, used by blobs.  Default -1.  If set,
   * overrides abort option on connection level.  If set to IgnoreError,
   * does not cause execute() to return failure.  This is different from
   * IgnoreError on connection level.
   */
  Int8 m_abortOption;
945 946
};

947 948 949 950 951
#ifdef NDB_NO_DROPPED_SIGNAL
#include <stdlib.h>
#endif


952 953
inline
int
unknown's avatar
unknown committed
954
NdbOperation::checkMagicNumber(bool b)
955 956 957
{
  if (theMagicNumber != 0xABCDEF01){
#ifdef NDB_NO_DROPPED_SIGNAL
unknown's avatar
unknown committed
958
    if(b) abort();
959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
#endif
    return -1;
  }
  return 0;
}

inline
void
NdbOperation::setStartIndicator()
{
  theStartIndicator = 1;
}

inline
int
NdbOperation::getNdbErrorLine()
{
  return theErrorLine;
}

/******************************************************************************
void next(NdbOperation* aNdbOperation);

Parameters:    aNdbOperation: Pointers to the NdbOperation object.
Remark:        Set the next variable of the operation object.
******************************************************************************/
inline
void
NdbOperation::next(NdbOperation* aNdbOperation)
{
  theNext = aNdbOperation;
}

/******************************************************************************
NdbOperation* next();

Return Value:  	Return  next pointer to NdbOperation object.
Remark:         Get the next variable of the operation object.
******************************************************************************/
inline
NdbOperation*
NdbOperation::next()
{
  return theNext;
}

1005 1006 1007 1008 1009 1010
inline
const NdbOperation*
NdbOperation::next() const 
{
  return theNext;
}
1011 1012 1013 1014 1015 1016 1017 1018

inline
const NdbRecAttr*
NdbOperation::getFirstRecAttr() const 
{
  return theReceiver.theFirstRecAttr;
}

1019 1020 1021 1022 1023 1024 1025 1026
/******************************************************************************
OperationStatus  Status();

Return Value    Return the OperationStatus.	
Parameters:     aStatus:  The status.
Remark:         Sets Operation status. 
******************************************************************************/
inline
1027
NdbOperation::OperationStatus			
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
NdbOperation::Status()
{
  return theStatus;
}

/******************************************************************************
void  Status(OperationStatus aStatus);

Parameters:     aStatus: The status.
Remark:         Sets Operation
 status. 
******************************************************************************/
inline
void			
NdbOperation::Status( OperationStatus aStatus )
{
  theStatus = aStatus;
}

/******************************************************************************
1048
void NdbCon(NdbTransaction* aNdbCon);
1049

1050
Parameters:    aNdbCon: Pointers to NdbTransaction object.
1051 1052 1053 1054
Remark:        Set the reference to the connection in the operation object.
******************************************************************************/
inline
void
1055
NdbOperation::NdbCon(NdbTransaction* aNdbCon)
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200
{
  theNdbCon = aNdbCon;
}

inline
int
NdbOperation::equal(const char* anAttrName, Int32 aPar)
{
  return equal(anAttrName, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::equal(const char* anAttrName, Uint32 aPar)
{
  return equal(anAttrName, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::equal(const char* anAttrName, Int64 aPar)
{
  return equal(anAttrName, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::equal(const char* anAttrName, Uint64 aPar)
{
  return equal(anAttrName, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::equal(Uint32 anAttrId, Int32 aPar)
{
  return equal(anAttrId, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::equal(Uint32 anAttrId, Uint32 aPar)
{
  return equal(anAttrId, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::equal(Uint32 anAttrId, Int64 aPar)
{
  return equal(anAttrId, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::equal(Uint32 anAttrId, Uint64 aPar)
{
  return equal(anAttrId, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(const char* anAttrName, Int32 aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(const char* anAttrName, Uint32 aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(const char* anAttrName, Int64 aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(const char* anAttrName, Uint64 aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(const char* anAttrName, float aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(const char* anAttrName, double aPar)
{
  return setValue(anAttrName, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, Int32 aPar)
{
  return setValue(anAttrId, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, Uint32 aPar)
{
  return setValue(anAttrId, (const char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, Int64 aPar)
{
  return setValue(anAttrId, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, Uint64 aPar)
{
  return setValue(anAttrId, (const char*)&aPar, (Uint32)8);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, float aPar)
{
  return setValue(anAttrId, (char*)&aPar, (Uint32)4);
}

inline
int
NdbOperation::setValue(Uint32 anAttrId, double aPar)
{
  return setValue(anAttrId, (const char*)&aPar, (Uint32)8);
}

#endif