/* -*- mode: c++ -*-
*/
/*
GIFT, a flexible content based image retrieval system.
Copyright (C) 1998, 1999, 2000 CUI, University of Geneva
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
*/
// -*- mode: c++ -*-
#ifndef _CACCESSORFACTORYCONTAINER
#define _CACCESSORFACTORYCONTAINER
#include <map>
#include <string>
class CXMLElement;
class CAccessor;
class CAccessorFactory;
/**
* This is destined to hold a number of CAccessorFactories.
* The use of this is to have an open-close-counter for
* all the factories which have been registered in this
*
* New elements are only constructed if necessary.
*
*@author Wolfgang Müller
*/
class CAccessorFactoryContainer{
/**
This tree contains the configuration data for this
*/
const CXMLElement* mConfigurationData;
/**
Content is pointer to a factory,
a pointer to the actual Accessor (if already made)
and the open-close-counter
*/
class CContentElement{
public:
/** Contains a pointer to the accessor, if already opened */
CAccessor* mAccessor;
/** The factory to make an accessor, if this is needed */
CAccessorFactory* mFactory;
/** Counts how often the accessor has been opened or closed */
int mOpenCloseCounter;
};
/**
Typedef: The content is a map of string to content element
*/
typedef map<string,CContentElement> CContent;
/** The content is a map of string to content element */
CContent mContent;
public:
/** configure this */
void configure(const CXMLElement* inConfigurationData);
/**
The destructor destroys the CContentElements properly
*/
~CAccessorFactoryContainer();
/**
adding a factory to the content
*/
void registerFactory(CAccessorFactory* inFactory,
string inName);
/**
opening an accessor:
if the accessor is already constructed,
then simply give the pointer,
otherwhise construct a new one
using the appropriate factory
*/
CAccessor* openAccessor(string inName);
/**
closing an accessor.
If there have been as many openAccessor
as closeAccessor calls, the accessor will
be delete-d.
*/
void closeAccessor(string inName);
};
#endif
Documentation generated by muellerw@pc7170 on Son Okt 8 16:04:40 CEST 2000