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/**
* $Id: GEN_DataCache.h 14444 2008-04-16 22:40:48Z hos $
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __GEN_DATACACHE_H
#define __GEN_DATACACHE_H
#include "STR_HashedString.h"
#include "GEN_Map.h"
template <class T>
class GEN_DataCache
{
GEN_Map<STR_HashedString,T*> m_dataCache;
virtual T* LoadData(const STR_String& name)=0;
virtual void FreeCacheObjects()=0;
public:
GEN_DataCache() {};
virtual ~GEN_DataCache() {};
T* GetData(const STR_String& paramname)
{
T* result=NULL;
T** resultptr = m_dataCache[paramname];
if (resultptr)
{
result = *resultptr;
}
else
{
result = LoadData(paramname);
if (result)
{
m_dataCache.insert(paramname,result);
}
}
return result;
}
virtual void ClearCache()
{
FreeCacheObjects();
m_dataCache.clear();
}
};
#endif //__GEN_DATACACHE_H
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