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/***************************************************************************
* Copyright (C) 1995-2002 MySQL AB, www.mysql.com *
* *
* 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 *
****************************************************************************/
/***************************************************************************
* TRANSACT.C *
* *
* @description: For processing transactions *
* *
* @author : MySQL AB(monty@mysql.com, venu@mysql.com) *
* @date : 2001-Aug-15 *
* @product : myodbc3 *
* *
****************************************************************************/
/***************************************************************************
* The following ODBC APIs are implemented in this file: *
* *
* SQLEndTran (ISO 92) *
* SQLTransact (ODBC, Deprecated) *
* *
****************************************************************************/
#include "myodbc3.h"
/*
@type : internal
@purpose : to do the transaction at the connection level
*/
SQLRETURN my_transact(SQLHDBC hdbc,SQLSMALLINT CompletionType)
{
SQLRETURN result = SQL_SUCCESS;
DBC FAR *dbc = (DBC FAR *)hdbc;
const char *query;
if (dbc && !(dbc->flag & FLAG_NO_TRANSACTIONS))
{
switch(CompletionType) {
case SQL_COMMIT:
query = "COMMIT";
break;
case SQL_ROLLBACK:
if (!(dbc->mysql.server_capabilities & CLIENT_TRANSACTIONS))
{
return set_handle_error(SQL_HANDLE_DBC,hdbc,MYERR_S1C00,
"Underlying server does not support transactions, upgrade to version >= 3.23.38",0);
}
query = "ROLLBACK";
break;
default:
return set_handle_error(SQL_HANDLE_DBC,hdbc,MYERR_S1012,NULL,0);
}
pthread_mutex_lock(&dbc->lock);
if (check_if_server_is_alive(dbc) ||
mysql_real_query(&dbc->mysql,query,strlen(query)))
{
result=set_handle_error(SQL_HANDLE_DBC,hdbc,MYERR_S1000,
mysql_error(&dbc->mysql),
mysql_errno(&dbc->mysql));
}
pthread_mutex_unlock(&dbc->lock);
}
return(result);
}
/*
@type : ODBC 3.0
@purpose : requests a commit or rollback operation for all active
operations on all statements associated with a connection
*/
SQLRETURN SQL_API
SQLEndTran(SQLSMALLINT HandleType,
SQLHANDLE Handle,
SQLSMALLINT CompletionType)
{
SQLRETURN result=SQL_SUCCESS;
DBUG_ENTER("SQLEndTran");
DBUG_PRINT("enter",("type:%d,handle:%x,option:%d",HandleType,Handle,
CompletionType));
switch (HandleType) {
case SQL_HANDLE_ENV:
/*
TODO : The simple logic could be to call my_transact
with all connection handles in the current environment,
but as majority of the applications doesn't use this
option, lets wait for the request or any bug-report
*/
break;
case SQL_HANDLE_DBC:
result=my_transact(Handle,CompletionType);
break;
default:
result=SQL_ERROR;
set_handle_error(HandleType,Handle,MYERR_S1092,NULL,0);
break;
}
DBUG_RETURN(result);
}
/*
@type : ODBC 1.0
@purpose : Requests a commit or rollback operation for all active
operations on all statement handles (hstmts) associated
with a connection or for all connections associated
with the environment handle, henv
*/
SQLRETURN SQL_API SQLTransact(SQLHENV henv,SQLHDBC hdbc,SQLUSMALLINT fType)
{
SQLRETURN result=SQL_SUCCESS;
DBUG_ENTER("SQLTransact");
DBUG_PRINT("enter",("henv:%x,hdbc:%x,option:%d",henv,hdbc,fType));
if (hdbc)
result = my_transact(hdbc,fType);
DBUG_RETURN(result);
}
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