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/*
* Copyright (C) 2005-2008 MaNGOS <http://www.mangosproject.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 DATABASE_H
#define DATABASE_H
#include "zthread/Thread.h"
#include "../src/zthread/ThreadImpl.h"
#include "Utilities/HashMap.h"
#include "Database/SqlDelayThread.h"
class SqlTransaction;
class SqlResultQueue;
class SqlQueryHolder;
typedef HM_NAMESPACE::hash_map<ZThread::ThreadImpl*, SqlTransaction*> TransactionQueues;
typedef HM_NAMESPACE::hash_map<ZThread::ThreadImpl*, SqlResultQueue*> QueryQueues;
#define MAX_QUERY_LEN 1024
class MANGOS_DLL_SPEC Database
{
protected:
Database() : m_threadBody(NULL), m_delayThread(NULL) {};
TransactionQueues m_tranQueues; ///< Transaction queues from diff. threads
QueryQueues m_queryQueues; ///< Query queues from diff threads
SqlDelayThread* m_threadBody; ///< Pointer to delay sql executer
ZThread::Thread* m_delayThread; ///< Pointer to executer thread
public:
virtual ~Database();
virtual bool Initialize(const char *infoString);
virtual void InitDelayThread() = 0;
virtual void HaltDelayThread() = 0;
virtual QueryResult* Query(const char *sql) = 0;
QueryResult* PQuery(const char *format,...) ATTR_PRINTF(2,3);
/// Async queries and query holders, implemented in DatabaseImpl.h
template<class Class>
bool AsyncQuery(Class *object, void (Class::*method)(QueryResult*), const char *sql);
template<class Class, typename ParamType1>
bool AsyncQuery(Class *object, void (Class::*method)(QueryResult*, ParamType1), ParamType1 param1, const char *sql);
template<typename ParamType1>
bool AsyncQuery(void (*method)(QueryResult*, ParamType1), ParamType1 param1, const char *sql);
template<class Class>
bool AsyncPQuery(Class *object, void (Class::*method)(QueryResult*), const char *format,...) ATTR_PRINTF(4,5);
template<class Class, typename ParamType1>
bool AsyncPQuery(Class *object, void (Class::*method)(QueryResult*, ParamType1), ParamType1 param1, const char *format,...) ATTR_PRINTF(5,6);
template<typename ParamType1>
bool AsyncPQuery(void (*method)(QueryResult*, ParamType1), ParamType1 param1, const char *format,...) ATTR_PRINTF(5,6);
template<class Class>
bool DelayQueryHolder(Class *object, void (Class::*method)(QueryResult*, SqlQueryHolder*), SqlQueryHolder *holder);
template<class Class, typename ParamType1>
bool DelayQueryHolder(Class *object, void (Class::*method)(QueryResult*, SqlQueryHolder*, ParamType1), SqlQueryHolder *holder, ParamType1 param1);
virtual bool Execute(const char *sql) = 0;
bool PExecute(const char *format,...) ATTR_PRINTF(2,3);
virtual bool DirectExecute(const char* sql) = 0;
bool DirectPExecute(const char *format,...) ATTR_PRINTF(2,3);
// Writes SQL commands to a LOG file (see mangosd.conf "LogSQL")
bool PExecuteLog(const char *format,...) ATTR_PRINTF(2,3);
virtual bool BeginTransaction() // nothing do if DB not support transactions
{
return true;
}
virtual bool CommitTransaction() // nothing do if DB not support transactions
{
return true;
}
virtual bool RollbackTransaction() // can't rollback without transaction support
{
return false;
}
virtual operator bool () const = 0;
virtual unsigned long escape_string(char *to, const char *from, unsigned long length) { strncpy(to,from,length); return length; }
void escape_string(std::string& str);
// must be called before first query in thread (one time for thread using one from existed Database objects)
virtual void ThreadStart();
// must be called before finish thread run (one time for thread using one from existed Database objects)
virtual void ThreadEnd();
// sets the result queue of the current thread, be careful what thread you call this from
void SetResultQueue(SqlResultQueue * queue);
private:
bool m_logSQL;
std::string m_logsDir;
};
#endif
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