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CQueryPlugin.h

00001 /* -*- mode: c++ -*- 
00002 */
00003 /* 
00004 
00005     GIFT, a flexible content based image retrieval system.
00006     Copyright (C) 1998, 1999, 2000, 2001, 2002, CUI University of Geneva
00007 
00008      Copyright (C) 2003, 2004 Bayreuth University
00009       2005 Bamberg University
00010     This program is free software; you can redistribute it and/or modify
00011     it under the terms of the GNU General Public License as published by
00012     the Free Software Foundation; either version 2 of the License, or
00013     (at your option) any later version.
00014 
00015     This program is distributed in the hope that it will be useful,
00016     but WITHOUT ANY WARRANTY; without even the implied warranty of
00017     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018     GNU General Public License for more details.
00019 
00020     You should have received a copy of the GNU General Public License
00021     along with this program; if not, write to the Free Software
00022     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 
00024 */
00025 // -*- mode: c++ -*-
00026 #ifndef _CQUERYPLUGIN
00027 #define _CQUERYPLUGIN
00028 #include "libMRML/include/uses-declarations.h"
00029 #include <sys/types.h> // reading a directory
00030 #include <dirent.h>    // reading a directory
00031 #include <dlfcn.h>     // dynamic linking 
00032 
00033 #include <iostream>    // screen output
00034 #include <string>
00035 #include <map>
00036 
00037 
00038 class CQuery;
00039 class CAlgorithm;
00040 class CAccessorAdminCollection;
00041 
00042 class CQueryPlugin{
00043 protected:
00045   void*   mDlOpenHandle;
00047   string  mName;
00049   CQuery* (*mMakeQuery)(CAccessorAdminCollection& inAccessorAdminCollection,
00050                         CAlgorithm& inAlgorithm);
00052   char*  (*mGetName)(void);
00054   bool mIsSane;
00055 public:
00057   CQuery* makeQuery(CAccessorAdminCollection& inAccessorAdminCollection,
00058                    CAlgorithm& inAlgorithm);
00060   char* getName();
00062   CQueryPlugin(string,string,string);
00064   CQueryPlugin(CQueryPlugin&);
00066   ~CQueryPlugin();
00068   bool isSane()const;
00069 };
00070 
00071 #endif

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