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/*
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* Copyright (C) 2008-2010 Trinity <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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __SQLOPERATIONS_H
#define __SQLOPERATIONS_H
#include "Common.h"
#include "ace/Thread_Mutex.h"
#include "ace/Method_Request.h"
#include "Threading/LockedQueue.h"
#include <queue>
#include "Threading/Callback.h"
#include "QueryResult.h"
/// ---- BASE ---
class Database;
class SqlDelayThread;
class SqlOperation
{
public:
virtual void OnRemove() { delete this; }
virtual void Execute(Database *db) = 0;
virtual ~SqlOperation() {}
};
/// ---- ASYNC STATEMENTS / TRANSACTIONS ----
class SqlStatement : public SqlOperation
{
private:
const char *m_sql;
public:
SqlStatement(const char *sql) : m_sql(strdup(sql)){}
~SqlStatement() { void* tofree = const_cast<char*>(m_sql); free(tofree); }
void Execute(Database *db);
};
class SqlTransaction : public SqlOperation
{
private:
std::queue<const char*> m_queue;
ACE_Thread_Mutex m_Mutex;
public:
SqlTransaction() {}
void DelayExecute(const char *sql)
{
m_Mutex.acquire();
char* _sql = strdup(sql);
if (_sql)
m_queue.push(_sql);
m_Mutex.release();
}
void Execute(Database *db);
};
/// ---- ASYNC QUERIES ----
class SqlQuery; /// contains a single async query
class QueryResult; /// the result of one
class SqlResultQueue; /// queue for thread sync
class SqlQueryHolder; /// groups several async quries
class SqlQueryHolderEx; /// points to a holder, added to the delay thread
class SqlResultQueue : public ACE_Based::LockedQueue<Trinity::IQueryCallback* , ACE_Thread_Mutex>
{
public:
SqlResultQueue() {}
void Update();
};
class SqlQuery : public SqlOperation
{
private:
const char *m_sql;
Trinity::IQueryCallback * m_callback;
SqlResultQueue * m_queue;
public:
SqlQuery(const char *sql, Trinity::IQueryCallback * callback, SqlResultQueue * queue)
: m_sql(strdup(sql)), m_callback(callback), m_queue(queue) {}
~SqlQuery() { void* tofree = const_cast<char*>(m_sql); free(tofree); }
void Execute(Database *db);
};
class SqlQueryHolder
{
friend class SqlQueryHolderEx;
private:
typedef std::pair<const char*, QueryResult_AutoPtr> SqlResultPair;
std::vector<SqlResultPair> m_queries;
public:
SqlQueryHolder() {}
~SqlQueryHolder();
bool SetQuery(size_t index, const char *sql);
bool SetPQuery(size_t index, const char *format, ...) ATTR_PRINTF(3,4);
void SetSize(size_t size);
QueryResult_AutoPtr GetResult(size_t index);
void SetResult(size_t index, QueryResult_AutoPtr result);
bool Execute(Trinity::IQueryCallback * callback, SqlDelayThread *thread, SqlResultQueue *queue);
};
class SqlQueryHolderEx : public SqlOperation
{
private:
SqlQueryHolder * m_holder;
Trinity::IQueryCallback * m_callback;
SqlResultQueue * m_queue;
public:
SqlQueryHolderEx(SqlQueryHolder *holder, Trinity::IQueryCallback * callback, SqlResultQueue * queue)
: m_holder(holder), m_callback(callback), m_queue(queue) {}
void Execute(Database *db);
};
class SqlAsyncTask : public ACE_Method_Request
{
public:
SqlAsyncTask(Database * db, SqlOperation * op) : m_db(db), m_op(op){}
~SqlAsyncTask()
{
if (!m_op)
return;
delete m_op;
m_op = NULL;
}
int call()
{
if (m_db == NULL || m_op == NULL)
return -1;
try
{
m_op->Execute(m_db);
}
catch(...)
{
return -1;
}
return 0;
}
private:
Database * m_db;
SqlOperation * m_op;
};
#endif //__SQLOPERATIONS_H
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