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27c00a8cbb
- Allow transactions to contain both raw ad-hoc queries and prepared statement elements * When coding on high level code, just make sure you use the right argument type for Transaction::Append and the proper execution will be done automagically --HG-- branch : trunk
113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
/*
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* Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "DatabaseEnv.h"
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#include "Transaction.h"
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//- Append a raw ad-hoc query to the transaction
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void Transaction::Append(const char* sql)
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{
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TransactionElementData data;
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data.type = TRANSACTION_ELEMENT_RAW;
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data.element.query = strdup(sql);
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m_queries.push(data);
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}
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void Transaction::PAppend(const char* sql, ...)
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{
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va_list ap;
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char szQuery [MAX_QUERY_LEN];
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va_start(ap, sql);
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vsnprintf(szQuery, MAX_QUERY_LEN, sql, ap);
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va_end(ap);
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Append(szQuery);
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}
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//- Append a prepared statement to the transaction
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void Transaction::Append(PreparedStatement* stmt)
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{
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TransactionElementData data;
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data.type = TRANSACTION_ELEMENT_PREPARED;
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data.element.stmt = stmt;
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m_queries.push(data);
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}
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void Transaction::Cleanup()
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{
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while (!m_queries.empty())
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{
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TransactionElementData data = m_queries.front();
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switch (data.type)
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{
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case TRANSACTION_ELEMENT_PREPARED:
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delete data.element.stmt;
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break;
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case TRANSACTION_ELEMENT_RAW:
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free((void*)(data.element.query));
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break;
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}
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m_queries.pop();
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}
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}
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bool TransactionTask::Execute()
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{
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std::queue<TransactionElementData> &queries = m_trans->m_queries;
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if (queries.empty())
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return false;
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m_conn->BeginTransaction();
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while (!queries.empty())
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{
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TransactionElementData data = queries.front();
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switch (data.type)
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{
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case TRANSACTION_ELEMENT_PREPARED:
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{
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PreparedStatement* stmt = data.element.stmt;
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ASSERT(stmt);
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if (!m_conn->Execute(stmt))
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{
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sLog.outSQLDriver("[Warning] Transaction aborted. %u queries not executed.", (uint32)queries.size());
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m_conn->RollbackTransaction();
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return false;
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}
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delete data.element.stmt;
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}
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break;
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case TRANSACTION_ELEMENT_RAW:
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{
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const char* sql = data.element.query;
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ASSERT(sql)
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if (!m_conn->Execute(sql))
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{
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sLog.outSQLDriver("[Warning] Transaction aborted. %u queries not executed.", (uint32)queries.size());
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m_conn->RollbackTransaction();
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return false;
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}
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free((void*)const_cast<char*>(sql));
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}
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break;
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}
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queries.pop();
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}
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m_conn->CommitTransaction();
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return true;
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}
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