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/*
* Copyright (C) 2008-2014 TrinityCore <http://www.trinitycore.org/>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "MySQLConnection.h"
#include "QueryHolder.h"
#include "PreparedStatement.h"
#include "Log.h"
bool SQLQueryHolder::SetQuery(size_t index, const char *sql)
{
if (m_queries.size() <= index)
{
TC_LOG_ERROR("sql.sql", "Query index (%u) out of range (size: %u) for query: %s", uint32(index), (uint32)m_queries.size(), sql);
return false;
}
/// not executed yet, just stored (it's not called a holder for nothing)
SQLElementData element;
element.type = SQL_ELEMENT_RAW;
element.element.query = strdup(sql);
SQLResultSetUnion result;
result.qresult = NULL;
m_queries[index] = SQLResultPair(element, result);
return true;
}
bool SQLQueryHolder::SetPQuery(size_t index, const char *format, ...)
{
if (!format)
{
TC_LOG_ERROR("sql.sql", "Query (index: %u) is empty.", uint32(index));
return false;
}
va_list ap;
char szQuery [MAX_QUERY_LEN];
va_start(ap, format);
int res = vsnprintf(szQuery, MAX_QUERY_LEN, format, ap);
va_end(ap);
if (res == -1)
{
TC_LOG_ERROR("sql.sql", "SQL Query truncated (and not execute) for format: %s", format);
return false;
}
return SetQuery(index, szQuery);
}
bool SQLQueryHolder::SetPreparedQuery(size_t index, PreparedStatement* stmt)
{
if (m_queries.size() <= index)
{
TC_LOG_ERROR("sql.sql", "Query index (%u) out of range (size: %u) for prepared statement", uint32(index), (uint32)m_queries.size());
return false;
}
/// not executed yet, just stored (it's not called a holder for nothing)
SQLElementData element;
element.type = SQL_ELEMENT_PREPARED;
element.element.stmt = stmt;
SQLResultSetUnion result;
result.presult = NULL;
m_queries[index] = SQLResultPair(element, result);
return true;
}
QueryResult SQLQueryHolder::GetResult(size_t index)
{
// Don't call to this function if the index is of an ad-hoc statement
if (index < m_queries.size())
{
ResultSet* result = m_queries[index].second.qresult;
if (!result || !result->GetRowCount() || !result->NextRow())
return QueryResult(NULL);
return QueryResult(result);
}
else
return QueryResult(NULL);
}
PreparedQueryResult SQLQueryHolder::GetPreparedResult(size_t index)
{
// Don't call to this function if the index is of a prepared statement
if (index < m_queries.size())
{
PreparedResultSet* result = m_queries[index].second.presult;
if (!result || !result->GetRowCount())
return PreparedQueryResult(NULL);
return PreparedQueryResult(result);
}
else
return PreparedQueryResult(NULL);
}
void SQLQueryHolder::SetResult(size_t index, ResultSet* result)
{
if (result && !result->GetRowCount())
{
delete result;
result = NULL;
}
/// store the result in the holder
if (index < m_queries.size())
m_queries[index].second.qresult = result;
}
void SQLQueryHolder::SetPreparedResult(size_t index, PreparedResultSet* result)
{
if (result && !result->GetRowCount())
{
delete result;
result = NULL;
}
/// store the result in the holder
if (index < m_queries.size())
m_queries[index].second.presult = result;
}
SQLQueryHolder::~SQLQueryHolder()
{
for (size_t i = 0; i < m_queries.size(); i++)
{
/// if the result was never used, free the resources
/// results used already (getresult called) are expected to be deleted
if (SQLElementData* data = &m_queries[i].first)
{
switch (data->type)
{
case SQL_ELEMENT_RAW:
free((void*)(const_cast<char*>(data->element.query)));
break;
case SQL_ELEMENT_PREPARED:
delete data->element.stmt;
break;
}
}
}
}
void SQLQueryHolder::SetSize(size_t size)
{
/// to optimize push_back, reserve the number of queries about to be executed
m_queries.resize(size);
}
bool SQLQueryHolderTask::Execute()
{
if (!m_holder)
return false;
/// we can do this, we are friends
std::vector<SQLQueryHolder::SQLResultPair> &queries = m_holder->m_queries;
for (size_t i = 0; i < queries.size(); i++)
{
/// execute all queries in the holder and pass the results
if (SQLElementData* data = &queries[i].first)
{
switch (data->type)
{
case SQL_ELEMENT_RAW:
{
char const* sql = data->element.query;
if (sql)
m_holder->SetResult(i, m_conn->Query(sql));
break;
}
case SQL_ELEMENT_PREPARED:
{
PreparedStatement* stmt = data->element.stmt;
if (stmt)
m_holder->SetPreparedResult(i, m_conn->Query(stmt));
break;
}
}
}
}
m_result.set_value(m_holder);
return true;
}
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