mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 13:32:33 +01:00
2253df9b60
NdbScanFilter, not a bug. But update example program ndb/ndbapi-examples/ndbapi_scan_example/ndbapi_scan.cpp: memset char[20] as all bytes are significant when comparing
825 lines
20 KiB
C++
825 lines
20 KiB
C++
|
|
/* 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 */
|
|
|
|
|
|
/*
|
|
* ndbapi_scan.cpp:
|
|
* Illustrates how to use the scan api in the NDBAPI.
|
|
* The example shows how to do scan, scan for update and scan for delete
|
|
* using NdbScanFilter and NdbScanOperation
|
|
*
|
|
* Classes and methods used in this example:
|
|
*
|
|
* Ndb_cluster_connection
|
|
* connect()
|
|
* wait_until_ready()
|
|
*
|
|
* Ndb
|
|
* init()
|
|
* getDictionary()
|
|
* startTransaction()
|
|
* closeTransaction()
|
|
*
|
|
* NdbTransaction
|
|
* getNdbScanOperation()
|
|
* execute()
|
|
*
|
|
* NdbScanOperation
|
|
* getValue()
|
|
* readTuples()
|
|
* nextResult()
|
|
* deleteCurrentTuple()
|
|
* updateCurrentTuple()
|
|
*
|
|
* const NdbDictionary::Dictionary
|
|
* getTable()
|
|
*
|
|
* const NdbDictionary::Table
|
|
* getColumn()
|
|
*
|
|
* const NdbDictionary::Column
|
|
* getLength()
|
|
*
|
|
* NdbOperation
|
|
* insertTuple()
|
|
* equal()
|
|
* setValue()
|
|
*
|
|
* NdbScanFilter
|
|
* begin()
|
|
* eq()
|
|
* end()
|
|
*
|
|
*/
|
|
|
|
|
|
#include <mysql.h>
|
|
#include <mysqld_error.h>
|
|
#include <NdbApi.hpp>
|
|
// Used for cout
|
|
#include <iostream>
|
|
#include <stdio.h>
|
|
|
|
/**
|
|
* Helper sleep function
|
|
*/
|
|
static void
|
|
milliSleep(int milliseconds){
|
|
struct timeval sleeptime;
|
|
sleeptime.tv_sec = milliseconds / 1000;
|
|
sleeptime.tv_usec = (milliseconds - (sleeptime.tv_sec * 1000)) * 1000000;
|
|
select(0, 0, 0, 0, &sleeptime);
|
|
}
|
|
|
|
|
|
/**
|
|
* Helper sleep function
|
|
*/
|
|
#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); }
|
|
|
|
struct Car
|
|
{
|
|
/**
|
|
* Note memset, so that entire char-fields are cleared
|
|
* as all 20 bytes are significant (as type is char)
|
|
*/
|
|
Car() { memset(this, 0, sizeof(* this)); }
|
|
|
|
unsigned int reg_no;
|
|
char brand[20];
|
|
char color[20];
|
|
};
|
|
|
|
/**
|
|
* Function to create table
|
|
*/
|
|
int create_table(MYSQL &mysql)
|
|
{
|
|
while (mysql_query(&mysql,
|
|
"CREATE TABLE"
|
|
" GARAGE"
|
|
" (REG_NO INT UNSIGNED NOT NULL,"
|
|
" BRAND CHAR(20) NOT NULL,"
|
|
" COLOR CHAR(20) NOT NULL,"
|
|
" PRIMARY KEY USING HASH (REG_NO))"
|
|
" ENGINE=NDB"))
|
|
{
|
|
if (mysql_errno(&mysql) != ER_TABLE_EXISTS_ERROR)
|
|
MYSQLERROR(mysql);
|
|
std::cout << "MySQL Cluster already has example table: GARAGE. "
|
|
<< "Dropping it..." << std::endl;
|
|
/**************
|
|
* Drop table *
|
|
**************/
|
|
if (mysql_query(&mysql, "DROP TABLE GARAGE"))
|
|
MYSQLERROR(mysql);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
int populate(Ndb * myNdb)
|
|
{
|
|
int i;
|
|
Car cars[15];
|
|
|
|
const NdbDictionary::Dictionary* myDict= myNdb->getDictionary();
|
|
const NdbDictionary::Table *myTable= myDict->getTable("GARAGE");
|
|
|
|
if (myTable == NULL)
|
|
APIERROR(myDict->getNdbError());
|
|
|
|
/**
|
|
* Five blue mercedes
|
|
*/
|
|
for (i = 0; i < 5; i++)
|
|
{
|
|
cars[i].reg_no = i;
|
|
sprintf(cars[i].brand, "Mercedes");
|
|
sprintf(cars[i].color, "Blue");
|
|
}
|
|
|
|
/**
|
|
* Five black bmw
|
|
*/
|
|
for (i = 5; i < 10; i++)
|
|
{
|
|
cars[i].reg_no = i;
|
|
sprintf(cars[i].brand, "BMW");
|
|
sprintf(cars[i].color, "Black");
|
|
}
|
|
|
|
/**
|
|
* Five pink toyotas
|
|
*/
|
|
for (i = 10; i < 15; i++)
|
|
{
|
|
cars[i].reg_no = i;
|
|
sprintf(cars[i].brand, "Toyota");
|
|
sprintf(cars[i].color, "Pink");
|
|
}
|
|
|
|
NdbTransaction* myTrans = myNdb->startTransaction();
|
|
if (myTrans == NULL)
|
|
APIERROR(myNdb->getNdbError());
|
|
|
|
for (i = 0; i < 15; i++)
|
|
{
|
|
NdbOperation* myNdbOperation = myTrans->getNdbOperation(myTable);
|
|
if (myNdbOperation == NULL)
|
|
APIERROR(myTrans->getNdbError());
|
|
myNdbOperation->insertTuple();
|
|
myNdbOperation->equal("REG_NO", cars[i].reg_no);
|
|
myNdbOperation->setValue("BRAND", cars[i].brand);
|
|
myNdbOperation->setValue("COLOR", cars[i].color);
|
|
}
|
|
|
|
int check = myTrans->execute(NdbTransaction::Commit);
|
|
|
|
myTrans->close();
|
|
|
|
return check != -1;
|
|
}
|
|
|
|
int scan_delete(Ndb* myNdb,
|
|
int column,
|
|
const char * color)
|
|
|
|
{
|
|
|
|
// Scan all records exclusive and delete
|
|
// them one by one
|
|
int retryAttempt = 0;
|
|
const int retryMax = 10;
|
|
int deletedRows = 0;
|
|
int check;
|
|
NdbError err;
|
|
NdbTransaction *myTrans;
|
|
NdbScanOperation *myScanOp;
|
|
|
|
const NdbDictionary::Dictionary* myDict= myNdb->getDictionary();
|
|
const NdbDictionary::Table *myTable= myDict->getTable("GARAGE");
|
|
|
|
if (myTable == NULL)
|
|
APIERROR(myDict->getNdbError());
|
|
|
|
/**
|
|
* Loop as long as :
|
|
* retryMax not reached
|
|
* failed operations due to TEMPORARY erros
|
|
*
|
|
* Exit loop;
|
|
* retyrMax reached
|
|
* Permanent error (return -1)
|
|
*/
|
|
while (true)
|
|
{
|
|
if (retryAttempt >= retryMax)
|
|
{
|
|
std::cout << "ERROR: has retried this operation " << retryAttempt
|
|
<< " times, failing!" << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
myTrans = myNdb->startTransaction();
|
|
if (myTrans == NULL)
|
|
{
|
|
const NdbError err = myNdb->getNdbError();
|
|
|
|
if (err.status == NdbError::TemporaryError)
|
|
{
|
|
milliSleep(50);
|
|
retryAttempt++;
|
|
continue;
|
|
}
|
|
std::cout << err.message << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Get a scan operation.
|
|
*/
|
|
myScanOp = myTrans->getNdbScanOperation(myTable);
|
|
if (myScanOp == NULL)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Define a result set for the scan.
|
|
*/
|
|
if(myScanOp->readTuples(NdbOperation::LM_Exclusive) != 0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Use NdbScanFilter to define a search critera
|
|
*/
|
|
NdbScanFilter filter(myScanOp) ;
|
|
if(filter.begin(NdbScanFilter::AND) < 0 ||
|
|
filter.cmp(NdbScanFilter::COND_EQ, column, color) < 0 ||
|
|
filter.end() < 0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Start scan (NoCommit since we are only reading at this stage);
|
|
*/
|
|
if(myTrans->execute(NdbTransaction::NoCommit) != 0){
|
|
err = myTrans->getNdbError();
|
|
if(err.status == NdbError::TemporaryError){
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
std::cout << err.code << std::endl;
|
|
std::cout << myTrans->getNdbError().code << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* start of loop: nextResult(true) means that "parallelism" number of
|
|
* rows are fetched from NDB and cached in NDBAPI
|
|
*/
|
|
while((check = myScanOp->nextResult(true)) == 0){
|
|
do
|
|
{
|
|
if (myScanOp->deleteCurrentTuple() != 0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
deletedRows++;
|
|
|
|
/**
|
|
* nextResult(false) means that the records
|
|
* cached in the NDBAPI are modified before
|
|
* fetching more rows from NDB.
|
|
*/
|
|
} while((check = myScanOp->nextResult(false)) == 0);
|
|
|
|
/**
|
|
* Commit when all cached tuple have been marked for deletion
|
|
*/
|
|
if(check != -1)
|
|
{
|
|
check = myTrans->execute(NdbTransaction::Commit);
|
|
}
|
|
|
|
if(check == -1)
|
|
{
|
|
/**
|
|
* Create a new transaction, while keeping scan open
|
|
*/
|
|
check = myTrans->restart();
|
|
}
|
|
|
|
/**
|
|
* Check for errors
|
|
*/
|
|
err = myTrans->getNdbError();
|
|
if(check == -1)
|
|
{
|
|
if(err.status == NdbError::TemporaryError)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
}
|
|
/**
|
|
* End of loop
|
|
*/
|
|
}
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return 0;
|
|
}
|
|
|
|
if(myTrans!=0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
int scan_update(Ndb* myNdb,
|
|
int update_column,
|
|
const char * before_color,
|
|
const char * after_color)
|
|
|
|
{
|
|
|
|
// Scan all records exclusive and update
|
|
// them one by one
|
|
int retryAttempt = 0;
|
|
const int retryMax = 10;
|
|
int updatedRows = 0;
|
|
int check;
|
|
NdbError err;
|
|
NdbTransaction *myTrans;
|
|
NdbScanOperation *myScanOp;
|
|
|
|
const NdbDictionary::Dictionary* myDict= myNdb->getDictionary();
|
|
const NdbDictionary::Table *myTable= myDict->getTable("GARAGE");
|
|
|
|
if (myTable == NULL)
|
|
APIERROR(myDict->getNdbError());
|
|
|
|
/**
|
|
* Loop as long as :
|
|
* retryMax not reached
|
|
* failed operations due to TEMPORARY erros
|
|
*
|
|
* Exit loop;
|
|
* retyrMax reached
|
|
* Permanent error (return -1)
|
|
*/
|
|
while (true)
|
|
{
|
|
|
|
if (retryAttempt >= retryMax)
|
|
{
|
|
std::cout << "ERROR: has retried this operation " << retryAttempt
|
|
<< " times, failing!" << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
myTrans = myNdb->startTransaction();
|
|
if (myTrans == NULL)
|
|
{
|
|
const NdbError err = myNdb->getNdbError();
|
|
|
|
if (err.status == NdbError::TemporaryError)
|
|
{
|
|
milliSleep(50);
|
|
retryAttempt++;
|
|
continue;
|
|
}
|
|
std::cout << err.message << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Get a scan operation.
|
|
*/
|
|
myScanOp = myTrans->getNdbScanOperation(myTable);
|
|
if (myScanOp == NULL)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Define a result set for the scan.
|
|
*/
|
|
if( myScanOp->readTuples(NdbOperation::LM_Exclusive) )
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Use NdbScanFilter to define a search critera
|
|
*/
|
|
NdbScanFilter filter(myScanOp) ;
|
|
if(filter.begin(NdbScanFilter::AND) < 0 ||
|
|
filter.cmp(NdbScanFilter::COND_EQ, update_column, before_color) <0||
|
|
filter.end() <0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Start scan (NoCommit since we are only reading at this stage);
|
|
*/
|
|
if(myTrans->execute(NdbTransaction::NoCommit) != 0)
|
|
{
|
|
err = myTrans->getNdbError();
|
|
if(err.status == NdbError::TemporaryError){
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
std::cout << myTrans->getNdbError().code << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* start of loop: nextResult(true) means that "parallelism" number of
|
|
* rows are fetched from NDB and cached in NDBAPI
|
|
*/
|
|
while((check = myScanOp->nextResult(true)) == 0){
|
|
do {
|
|
/**
|
|
* Get update operation
|
|
*/
|
|
NdbOperation * myUpdateOp = myScanOp->updateCurrentTuple();
|
|
if (myUpdateOp == 0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
updatedRows++;
|
|
|
|
/**
|
|
* do the update
|
|
*/
|
|
myUpdateOp->setValue(update_column, after_color);
|
|
/**
|
|
* nextResult(false) means that the records
|
|
* cached in the NDBAPI are modified before
|
|
* fetching more rows from NDB.
|
|
*/
|
|
} while((check = myScanOp->nextResult(false)) == 0);
|
|
|
|
/**
|
|
* NoCommit when all cached tuple have been updated
|
|
*/
|
|
if(check != -1)
|
|
{
|
|
check = myTrans->execute(NdbTransaction::NoCommit);
|
|
}
|
|
|
|
/**
|
|
* Check for errors
|
|
*/
|
|
err = myTrans->getNdbError();
|
|
if(check == -1)
|
|
{
|
|
if(err.status == NdbError::TemporaryError){
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
}
|
|
/**
|
|
* End of loop
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* Commit all prepared operations
|
|
*/
|
|
if(myTrans->execute(NdbTransaction::Commit) == -1)
|
|
{
|
|
if(err.status == NdbError::TemporaryError){
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return 0;
|
|
}
|
|
|
|
|
|
if(myTrans!=0)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
|
|
int scan_print(Ndb * myNdb)
|
|
{
|
|
// Scan all records exclusive and update
|
|
// them one by one
|
|
int retryAttempt = 0;
|
|
const int retryMax = 10;
|
|
int fetchedRows = 0;
|
|
int check;
|
|
NdbError err;
|
|
NdbTransaction *myTrans;
|
|
NdbScanOperation *myScanOp;
|
|
/* Result of reading attribute value, three columns:
|
|
REG_NO, BRAND, and COLOR
|
|
*/
|
|
NdbRecAttr * myRecAttr[3];
|
|
|
|
const NdbDictionary::Dictionary* myDict= myNdb->getDictionary();
|
|
const NdbDictionary::Table *myTable= myDict->getTable("GARAGE");
|
|
|
|
if (myTable == NULL)
|
|
APIERROR(myDict->getNdbError());
|
|
|
|
/**
|
|
* Loop as long as :
|
|
* retryMax not reached
|
|
* failed operations due to TEMPORARY erros
|
|
*
|
|
* Exit loop;
|
|
* retyrMax reached
|
|
* Permanent error (return -1)
|
|
*/
|
|
while (true)
|
|
{
|
|
|
|
if (retryAttempt >= retryMax)
|
|
{
|
|
std::cout << "ERROR: has retried this operation " << retryAttempt
|
|
<< " times, failing!" << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
myTrans = myNdb->startTransaction();
|
|
if (myTrans == NULL)
|
|
{
|
|
const NdbError err = myNdb->getNdbError();
|
|
|
|
if (err.status == NdbError::TemporaryError)
|
|
{
|
|
milliSleep(50);
|
|
retryAttempt++;
|
|
continue;
|
|
}
|
|
std::cout << err.message << std::endl;
|
|
return -1;
|
|
}
|
|
/*
|
|
* Define a scan operation.
|
|
* NDBAPI.
|
|
*/
|
|
myScanOp = myTrans->getNdbScanOperation(myTable);
|
|
if (myScanOp == NULL)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Read without locks, without being placed in lock queue
|
|
*/
|
|
if( myScanOp->readTuples(NdbOperation::LM_CommittedRead) == -1)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Define storage for fetched attributes.
|
|
* E.g., the resulting attributes of executing
|
|
* myOp->getValue("REG_NO") is placed in myRecAttr[0].
|
|
* No data exists in myRecAttr until transaction has commited!
|
|
*/
|
|
myRecAttr[0] = myScanOp->getValue("REG_NO");
|
|
myRecAttr[1] = myScanOp->getValue("BRAND");
|
|
myRecAttr[2] = myScanOp->getValue("COLOR");
|
|
if(myRecAttr[0] ==NULL || myRecAttr[1] == NULL || myRecAttr[2]==NULL)
|
|
{
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
/**
|
|
* Start scan (NoCommit since we are only reading at this stage);
|
|
*/
|
|
if(myTrans->execute(NdbTransaction::NoCommit) != 0){
|
|
err = myTrans->getNdbError();
|
|
if(err.status == NdbError::TemporaryError){
|
|
std::cout << myTrans->getNdbError().message << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
milliSleep(50);
|
|
continue;
|
|
}
|
|
std::cout << err.code << std::endl;
|
|
std::cout << myTrans->getNdbError().code << std::endl;
|
|
myNdb->closeTransaction(myTrans);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* start of loop: nextResult(true) means that "parallelism" number of
|
|
* rows are fetched from NDB and cached in NDBAPI
|
|
*/
|
|
while((check = myScanOp->nextResult(true)) == 0){
|
|
do {
|
|
|
|
fetchedRows++;
|
|
/**
|
|
* print REG_NO unsigned int
|
|
*/
|
|
std::cout << myRecAttr[0]->u_32_value() << "\t";
|
|
|
|
/**
|
|
* print BRAND character string
|
|
*/
|
|
std::cout << myRecAttr[1]->aRef() << "\t";
|
|
|
|
/**
|
|
* print COLOR character string
|
|
*/
|
|
std::cout << myRecAttr[2]->aRef() << std::endl;
|
|
|
|
/**
|
|
* nextResult(false) means that the records
|
|
* cached in the NDBAPI are modified before
|
|
* fetching more rows from NDB.
|
|
*/
|
|
} while((check = myScanOp->nextResult(false)) == 0);
|
|
|
|
}
|
|
myNdb->closeTransaction(myTrans);
|
|
return 1;
|
|
}
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
int main()
|
|
{
|
|
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", "", "",
|
|
3306, "/tmp/mysql.sock", 0) )
|
|
MYSQLERROR(mysql);
|
|
|
|
mysql_query(&mysql, "CREATE DATABASE TEST_DB");
|
|
if (mysql_query(&mysql, "USE TEST_DB") != 0) MYSQLERROR(mysql);
|
|
|
|
create_table(mysql);
|
|
}
|
|
|
|
/**************************************************************
|
|
* Connect to ndb cluster *
|
|
**************************************************************/
|
|
|
|
Ndb_cluster_connection cluster_connection;
|
|
if (cluster_connection.connect(4, 5, 1))
|
|
{
|
|
std::cout << "Unable to connect to cluster within 30 secs." << std::endl;
|
|
exit(-1);
|
|
}
|
|
// Optionally connect and wait for the storage nodes (ndbd's)
|
|
if (cluster_connection.wait_until_ready(30,0) < 0)
|
|
{
|
|
std::cout << "Cluster was not ready within 30 secs.\n";
|
|
exit(-1);
|
|
}
|
|
|
|
Ndb myNdb(&cluster_connection,"TEST_DB");
|
|
if (myNdb.init(1024) == -1) { // Set max 1024 parallel transactions
|
|
APIERROR(myNdb.getNdbError());
|
|
exit(-1);
|
|
}
|
|
|
|
/*******************************************
|
|
* Check table definition *
|
|
*******************************************/
|
|
int column_color;
|
|
{
|
|
const NdbDictionary::Dictionary* myDict= myNdb.getDictionary();
|
|
const NdbDictionary::Table *t= myDict->getTable("GARAGE");
|
|
|
|
Car car;
|
|
if (t->getColumn("COLOR")->getLength() != sizeof(car.color) ||
|
|
t->getColumn("BRAND")->getLength() != sizeof(car.brand))
|
|
{
|
|
std::cout << "Wrong table definition" << std::endl;
|
|
exit(-1);
|
|
}
|
|
column_color= t->getColumn("COLOR")->getColumnNo();
|
|
}
|
|
|
|
if(populate(&myNdb) > 0)
|
|
std::cout << "populate: Success!" << std::endl;
|
|
|
|
if(scan_print(&myNdb) > 0)
|
|
std::cout << "scan_print: Success!" << std::endl << std::endl;
|
|
|
|
std::cout << "Going to delete all pink cars!" << std::endl;
|
|
|
|
{
|
|
/**
|
|
* Note! color needs to be of exact the same size as column defined
|
|
*/
|
|
Car tmp;
|
|
sprintf(tmp.color, "Pink");
|
|
if(scan_delete(&myNdb, column_color, tmp.color) > 0)
|
|
std::cout << "scan_delete: Success!" << std::endl << std::endl;
|
|
}
|
|
|
|
if(scan_print(&myNdb) > 0)
|
|
std::cout << "scan_print: Success!" << std::endl << std::endl;
|
|
|
|
{
|
|
/**
|
|
* Note! color1 & 2 need to be of exact the same size as column defined
|
|
*/
|
|
Car tmp1, tmp2;
|
|
sprintf(tmp1.color, "Blue");
|
|
sprintf(tmp2.color, "Black");
|
|
std::cout << "Going to update all " << tmp1.color
|
|
<< " cars to " << tmp2.color << " cars!" << std::endl;
|
|
if(scan_update(&myNdb, column_color, tmp1.color, tmp2.color) > 0)
|
|
std::cout << "scan_update: Success!" << std::endl << std::endl;
|
|
}
|
|
if(scan_print(&myNdb) > 0)
|
|
std::cout << "scan_print: Success!" << std::endl << std::endl;
|
|
|
|
return 0;
|
|
}
|