main.cpp 8.58 KB
Newer Older
unknown's avatar
unknown committed
1 2 3 4
/* 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
unknown's avatar
unknown committed
5
   the Free Software Foundation; version 2 of the License.
unknown's avatar
unknown committed
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

   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 */

// 
//  ndbapi_simple_index.cpp: Using secondary indexes in NDB API
//
//  Correct output from this program is:
//
//  ATTR1 ATTR2
22 23 24 25 26 27 28 29 30 31 32
//    0     0
//    1     1
//    2     2
//    3     3
//    4     4
//    5     5
//    6     6
//    7     7
//    8     8
//    9     9
//  ATTR1 ATTR2
unknown's avatar
unknown committed
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
//    0    10
//    1     1
//    2    12
//  Detected that deleted tuple doesn't exist!
//    4    14
//    5     5
//    6    16
//    7     7
//    8    18
//    9     9

#include <mysql.h>
#include <NdbApi.hpp>

// Used for cout
#include <stdio.h>
#include <iostream>

#define PRINT_ERROR(code,msg) \
  std::cout << "Error in " << __FILE__ << ", line: " << __LINE__ \
            << ", code: " << code \
            << ", msg: " << msg << "." << std::endl
#define MYSQLERROR(mysql) { \
  PRINT_ERROR(mysql_errno(&mysql),mysql_error(&mysql)); \
  exit(-1); }
#define APIERROR(error) { \
  PRINT_ERROR(error.code,error.message); \
  exit(-1); }

62
int main(int argc, char** argv)
unknown's avatar
unknown committed
63
{
64 65 66 67 68 69 70
  if (argc != 3)
    {
    std::cout << "Arguments are <socket mysqld> <connect_string cluster>.\n";
    exit(-1);
  }
  char * mysqld_sock  = argv[1];
  const char *connectstring = argv[2];
unknown's avatar
unknown committed
71 72 73 74 75 76 77 78 79 80 81 82
  ndb_init();
  MYSQL mysql;

  /**************************************************************
   * Connect to mysql server and create table                   *
   **************************************************************/
  {
    if ( !mysql_init(&mysql) ) {
      std::cout << "mysql_init failed\n";
      exit(-1);
    }
    if ( !mysql_real_connect(&mysql, "localhost", "root", "", "",
83
			     0, mysqld_sock, 0) )
unknown's avatar
unknown committed
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104
      MYSQLERROR(mysql);

    mysql_query(&mysql, "CREATE DATABASE TEST_DB_1");
    if (mysql_query(&mysql, "USE TEST_DB_1") != 0) MYSQLERROR(mysql);

    if (mysql_query(&mysql, 
		    "CREATE TABLE"
		    "  MYTABLENAME"
		    "    (ATTR1 INT UNSIGNED,"
		    "     ATTR2 INT UNSIGNED NOT NULL,"
		    "     PRIMARY KEY USING HASH (ATTR1),"
		    "     UNIQUE MYINDEXNAME USING HASH (ATTR2))"
		    "  ENGINE=NDB"))
      MYSQLERROR(mysql);
  }

  /**************************************************************
   * Connect to ndb cluster                                     *
   **************************************************************/

  Ndb_cluster_connection *cluster_connection=
105
    new Ndb_cluster_connection(connectstring); // Object representing the cluster
unknown's avatar
unknown committed
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129

  if (cluster_connection->connect(5,3,1))
  {
    std::cout << "Connect to cluster management server failed.\n";
    exit(-1);
  }

  if (cluster_connection->wait_until_ready(30,30))
  {
    std::cout << "Cluster was not ready within 30 secs.\n";
    exit(-1);
  }

  Ndb* myNdb = new Ndb( cluster_connection,
			"TEST_DB_1" );  // Object representing the database
  if (myNdb->init() == -1) { 
    APIERROR(myNdb->getNdbError());
    exit(-1);
  }

  const NdbDictionary::Dictionary* myDict= myNdb->getDictionary();
  const NdbDictionary::Table *myTable= myDict->getTable("MYTABLENAME");
  if (myTable == NULL)
    APIERROR(myDict->getNdbError());
130
  const NdbDictionary::Index *myIndex= myDict->getIndex("MYINDEXNAME$unique","MYTABLENAME");
unknown's avatar
unknown committed
131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
  if (myIndex == NULL)
    APIERROR(myDict->getNdbError());

  /**************************************************************************
   * Using 5 transactions, insert 10 tuples in table: (0,0),(1,1),...,(9,9) *
   **************************************************************************/
  for (int i = 0; i < 5; i++) {
    NdbTransaction *myTransaction= myNdb->startTransaction();
    if (myTransaction == NULL) APIERROR(myNdb->getNdbError());
    
    NdbOperation *myOperation= myTransaction->getNdbOperation(myTable);
    if (myOperation == NULL) APIERROR(myTransaction->getNdbError());
    
    myOperation->insertTuple();
    myOperation->equal("ATTR1", i);
    myOperation->setValue("ATTR2", i);

    myOperation = myTransaction->getNdbOperation(myTable);	
    if (myOperation == NULL) APIERROR(myTransaction->getNdbError());

    myOperation->insertTuple();
    myOperation->equal("ATTR1", i+5);
    myOperation->setValue("ATTR2", i+5);
    
    if (myTransaction->execute( NdbTransaction::Commit ) == -1)
      APIERROR(myTransaction->getNdbError());
    
    myNdb->closeTransaction(myTransaction);
  }
  
  /*****************************************
   * Read and print all tuples using index *
   *****************************************/
  std::cout << "ATTR1 ATTR2" << std::endl;
  
  for (int i = 0; i < 10; i++) {
    NdbTransaction *myTransaction= myNdb->startTransaction();
    if (myTransaction == NULL) APIERROR(myNdb->getNdbError());
    
    NdbIndexOperation *myIndexOperation=
      myTransaction->getNdbIndexOperation(myIndex);
    if (myIndexOperation == NULL) APIERROR(myTransaction->getNdbError());
    
    myIndexOperation->readTuple(NdbOperation::LM_Read);
    myIndexOperation->equal("ATTR2", i);
    
    NdbRecAttr *myRecAttr= myIndexOperation->getValue("ATTR1", NULL);
    if (myRecAttr == NULL) APIERROR(myTransaction->getNdbError());

180 181
    if(myTransaction->execute( NdbTransaction::Commit,
                               NdbOperation::AbortOnError ) != -1)
unknown's avatar
unknown committed
182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
      printf(" %2d    %2d\n", myRecAttr->u_32_value(), i);

    myNdb->closeTransaction(myTransaction);
  }

  /*****************************************************************
   * Update the second attribute in half of the tuples (adding 10) *
   *****************************************************************/
  for (int i = 0; i < 10; i+=2) {
    NdbTransaction *myTransaction= myNdb->startTransaction();
    if (myTransaction == NULL) APIERROR(myNdb->getNdbError());
    
    NdbIndexOperation *myIndexOperation=
      myTransaction->getNdbIndexOperation(myIndex);
    if (myIndexOperation == NULL) APIERROR(myTransaction->getNdbError());
    
    myIndexOperation->updateTuple();
    myIndexOperation->equal( "ATTR2", i );
    myIndexOperation->setValue( "ATTR2", i+10);
    
    if( myTransaction->execute( NdbTransaction::Commit ) == -1 ) 
      APIERROR(myTransaction->getNdbError());
    
    myNdb->closeTransaction(myTransaction);
  }
  
  /*************************************************
   * Delete one tuple (the one with primary key 3) *
   *************************************************/
  {
    NdbTransaction *myTransaction= myNdb->startTransaction();
    if (myTransaction == NULL) APIERROR(myNdb->getNdbError());
  
    NdbIndexOperation *myIndexOperation=
      myTransaction->getNdbIndexOperation(myIndex);
    if (myIndexOperation == NULL) APIERROR(myTransaction->getNdbError());
  
    myIndexOperation->deleteTuple();
    myIndexOperation->equal( "ATTR2", 3 );
  
    if (myTransaction->execute(NdbTransaction::Commit) == -1) 
      APIERROR(myTransaction->getNdbError());
  
    myNdb->closeTransaction(myTransaction);
  }

  /*****************************
   * Read and print all tuples *
   *****************************/
  {
    std::cout << "ATTR1 ATTR2" << std::endl;
  
    for (int i = 0; i < 10; i++) {
      NdbTransaction *myTransaction= myNdb->startTransaction();
      if (myTransaction == NULL) APIERROR(myNdb->getNdbError());
      
      NdbOperation *myOperation= myTransaction->getNdbOperation(myTable);
      if (myOperation == NULL) APIERROR(myTransaction->getNdbError());
    
      myOperation->readTuple(NdbOperation::LM_Read);
      myOperation->equal("ATTR1", i);
    
      NdbRecAttr *myRecAttr= myOperation->getValue("ATTR2", NULL);
      if (myRecAttr == NULL) APIERROR(myTransaction->getNdbError());
    
247 248
      if(myTransaction->execute( NdbTransaction::Commit,
                                 NdbOperation::AbortOnError ) == -1)
unknown's avatar
unknown committed
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
	if (i == 3) {
	  std::cout << "Detected that deleted tuple doesn't exist!\n";
	} else {
	  APIERROR(myTransaction->getNdbError());
	}
    
      if (i != 3) {
	printf(" %2d    %2d\n", i, myRecAttr->u_32_value());
      }
      myNdb->closeTransaction(myTransaction);
    }
  }

  /**************
   * Drop table *
   **************/
  if (mysql_query(&mysql, "DROP TABLE MYTABLENAME"))
    MYSQLERROR(mysql);

  delete myNdb;
  delete cluster_connection;

  ndb_end(0);
  return 0;
}