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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*/
#ifndef _CALLBACK_H
#define _CALLBACK_H
#include <ace/Future.h>
#include <ace/Future_Set.h>
#include "QueryResult.h"
typedef ACE_Future<QueryResult> QueryResultFuture;
typedef ACE_Future<PreparedQueryResult> PreparedQueryResultFuture;
/*! A simple template using ACE_Future to manage callbacks from the thread and object that
issued the request. <ParamType> is variable type of parameter that is used as parameter
for the callback function.
*/
#define CALLBACK_STAGE_INVALID uint8(-1)
template <typename Result, typename ParamType, bool chain = false>
class QueryCallback
{
public:
QueryCallback() : _param(), _stage(chain ? 0 : CALLBACK_STAGE_INVALID) {}
//! The parameter of this function should be a resultset returned from either .AsyncQuery or .AsyncPQuery
void SetFutureResult(ACE_Future<Result> value)
{
_result = value;
}
ACE_Future<Result> GetFutureResult()
{
return _result;
}
int IsReady()
{
return _result.ready();
}
void GetResult(Result& res)
{
_result.get(res);
}
void FreeResult()
{
_result.cancel();
}
void SetParam(ParamType value)
{
_param = value;
}
ParamType GetParam()
{
return _param;
}
//! Resets the stage of the callback chain
void ResetStage()
{
if (!chain)
return;
_stage = 0;
}
//! Advances the callback chain to the next stage, so upper level code can act on its results accordingly
void NextStage()
{
if (!chain)
return;
++_stage;
}
//! Returns the callback stage (or CALLBACK_STAGE_INVALID if invalid)
uint8 GetStage()
{
return _stage;
}
//! Resets all underlying variables (param, result and stage)
void Reset()
{
SetParam(nullptr);
FreeResult();
ResetStage();
}
private:
ACE_Future<Result> _result;
ParamType _param;
uint8 _stage;
};
template <typename Result, typename ParamType1, typename ParamType2, bool chain = false>
class QueryCallback_2
{
public:
QueryCallback_2() : _stage(chain ? 0 : CALLBACK_STAGE_INVALID) {}
//! The parameter of this function should be a resultset returned from either .AsyncQuery or .AsyncPQuery
void SetFutureResult(ACE_Future<Result> value)
{
_result = value;
}
ACE_Future<Result> GetFutureResult()
{
return _result;
}
int IsReady()
{
return _result.ready();
}
void GetResult(Result& res)
{
_result.get(res);
}
void FreeResult()
{
_result.cancel();
}
void SetFirstParam(ParamType1 value)
{
_param_1 = value;
}
void SetSecondParam(ParamType2 value)
{
_param_2 = value;
}
ParamType1 GetFirstParam()
{
return _param_1;
}
ParamType2 GetSecondParam()
{
return _param_2;
}
//! Resets the stage of the callback chain
void ResetStage()
{
if (!chain)
return;
_stage = 0;
}
//! Advances the callback chain to the next stage, so upper level code can act on its results accordingly
void NextStage()
{
if (!chain)
return;
++_stage;
}
//! Returns the callback stage (or CALLBACK_STAGE_INVALID if invalid)
uint8 GetStage()
{
return _stage;
}
//! Resets all underlying variables (param, result and stage)
void Reset()
{
SetFirstParam(0);
SetSecondParam(nullptr);
FreeResult();
ResetStage();
}
private:
ACE_Future<Result> _result;
ParamType1 _param_1;
ParamType2 _param_2;
uint8 _stage;
};
template <typename Result, typename ParamType1, typename ParamType2, typename ParamType3, bool chain = false>
class QueryCallback_3
{
public:
QueryCallback_3() : _stage(chain ? 0 : CALLBACK_STAGE_INVALID) {}
//! The parameter of this function should be a resultset returned from either .AsyncQuery or .AsyncPQuery
void SetFutureResult(ACE_Future<Result> value)
{
_result = value;
}
ACE_Future<Result> GetFutureResult()
{
return _result;
}
int IsReady()
{
return _result.ready();
}
void GetResult(Result& res)
{
_result.get(res);
}
void FreeResult()
{
_result.cancel();
}
void SetFirstParam(ParamType1 value)
{
_param_1 = value;
}
void SetSecondParam(ParamType2 value)
{
_param_2 = value;
}
void SetThirdParam(ParamType3 value)
{
_param_3 = value;
}
ParamType1 GetFirstParam()
{
return _param_1;
}
ParamType2 GetSecondParam()
{
return _param_2;
}
ParamType3 GetThirdParam()
{
return _param_3;
}
//! Resets the stage of the callback chain
void ResetStage()
{
if (!chain)
return;
_stage = 0;
}
//! Advances the callback chain to the next stage, so upper level code can act on its results accordingly
void NextStage()
{
if (!chain)
return;
++_stage;
}
//! Returns the callback stage (or CALLBACK_STAGE_INVALID if invalid)
uint8 GetStage()
{
return _stage;
}
//! Resets all underlying variables (param, result and stage)
void Reset()
{
SetFirstParam(nullptr);
SetSecondParam(nullptr);
SetThirdParam(nullptr);
FreeResult();
ResetStage();
}
private:
ACE_Future<Result> _result;
ParamType1 _param_1;
ParamType2 _param_2;
ParamType3 _param_3;
uint8 _stage;
};
#endif
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