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/* 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; version 2 of the License.
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
// 0 0
// 1 1
// 2 2
// 3 3
// 4 4
// 5 5
// 6 6
// 7 7
// 8 8
// 9 9
// ATTR1 ATTR2
// 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); }
int main(int argc, char** argv)
{
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];
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", "", "",
0, mysqld_sock, 0) )
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=
new Ndb_cluster_connection(connectstring); // Object representing the cluster
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());
const NdbDictionary::Index *myIndex= myDict->getIndex("MYINDEXNAME$unique","MYTABLENAME");
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());
if(myTransaction->execute( NdbTransaction::Commit,
NdbOperation::AbortOnError ) != -1)
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());
if(myTransaction->execute( NdbTransaction::Commit,
NdbOperation::AbortOnError ) == -1)
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;
}
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