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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: database.h,v 1.2 2001/02/20 07:03:16 jgg Exp $
/* ######################################################################
Data Base Abstraction
This class provides a simple interface to an abstract notion of a
database directory for storing state information about the system.
The 'Meta' information for a package is the control information and
setup scripts stored inside the archive. GetMetaTmp returns the name of
a directory that is used to store named files containing the control
information.
The File Listing is the database of installed files. It is loaded
into the memory/persistent cache structure by the ReadFileList method.
##################################################################### */
/*}}}*/
#ifndef PKGLIB_DATABASE_H
#define PKGLIB_DATABASE_H
#ifdef __GNUG__
#pragma interface "apt-pkg/database.h"
#endif
#include <apt-pkg/filelist.h>
#include <apt-pkg/pkgcachegen.h>
class pkgDataBase
{
protected:
pkgCacheGenerator *Cache;
pkgFLCache *FList;
string MetaDir;
virtual bool InitMetaTmp(string &Dir) = 0;
public:
// Some manipulators for the cache and generator
inline pkgCache &GetCache() {return Cache->GetCache();};
inline pkgFLCache &GetFLCache() {return *FList;};
inline pkgCacheGenerator &GetGenerator() {return *Cache;};
bool GetMetaTmp(string &Dir);
virtual bool ReadyFileList(OpProgress &Progress) = 0;
virtual bool ReadyPkgCache(OpProgress &Progress) = 0;
virtual bool LoadChanges() = 0;
pkgDataBase() : Cache(0), FList(0) {};
virtual ~pkgDataBase() {delete Cache; delete FList;};
};
#endif
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