System documentation of the GNU Image-Finding Tool

CQueryPlugin.h

/* -*- mode: c++ -*- 
*/
/* 

    GIFT, a flexible content based image retrieval system.
    Copyright (C) 1998, 1999, 2000, 2001, 2002, 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 _CQUERYPLUGIN
#define _CQUERYPLUGIN
#include "libMRML/include/uses-declarations.h"
#include <sys/types.h> // reading a directory
#include <dirent.h>    // reading a directory
#include <dlfcn.h>     // dynamic linking 

#include <iostream>    // screen output
#include <string>
#include <map>


class CQuery;
class CAlgorithm;
class CAccessorAdminCollection;

class CQueryPlugin{
protected:
  void*   mDlOpenHandle;
  string  mName;
  CQuery* (*mMakeQuery)(CAccessorAdminCollection& inAccessorAdminCollection,
                        CAlgorithm& inAlgorithm);
  char*  (*mGetName)(void);
  bool mIsSane;
public:
  CQuery* makeQuery(CAccessorAdminCollection& inAccessorAdminCollection,
                   CAlgorithm& inAlgorithm);
  char* getName();
  CQueryPlugin(string,string,string);
  CQueryPlugin(CQueryPlugin&);
  ~CQueryPlugin();
  bool isSane()const;
};

#endif

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