/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright 2012-13 Miranda NG project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

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.
*/

class MDatabaseCache : public MIDatabaseCache, public MZeroedObject
{
	HANDLE m_hCacheHeap;
	char* m_lastSetting;
	DBCachedContact *m_lastVL;

	LIST<DBCachedContact> m_lContacts;
	LIST<DBCachedGlobalValue> m_lGlobalSettings;
	LIST<char> m_lSettings;

	void FreeCachedVariant(DBVARIANT* V);

public:
	MDatabaseCache();
	~MDatabaseCache();

protected:
	STDMETHODIMP_(DBCachedContact*) AddContactToCache(HANDLE hContact);
	STDMETHODIMP_(DBCachedContact*) GetCachedContact(HANDLE hContact);
	STDMETHODIMP_(void) FreeCachedContact(HANDLE hContact);

	STDMETHODIMP_(char*) InsertCachedSetting(const char *szName, int);
	STDMETHODIMP_(char*) GetCachedSetting(const char *szModuleName, const char *szSettingName, int, int);
	STDMETHODIMP_(void)  SetCachedVariant(DBVARIANT *s, DBVARIANT *d);
	STDMETHODIMP_(DBVARIANT*) GetCachedValuePtr(HANDLE hContact, char *szSetting, int bAllocate);
};