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/tmp/buildd/soprano-2.5.0.e5.20100910.1174752/soprano/storagemodel.h

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00001 /*
00002  * This file is part of Soprano Project.
00003  *
00004  * Copyright (C) 2007 Sebastian Trueg <trueg@kde.org>
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Library General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Library General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Library General Public License
00017  * along with this library; see the file COPYING.LIB.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  */
00021 
00022 #ifndef _SOPRANO_STORAGE_MODEL_H_
00023 #define _SOPRANO_STORAGE_MODEL_H_
00024 
00025 #include "model.h"
00026 #include "soprano_export.h"
00027 
00028 namespace Soprano {
00029 
00030     class Backend;
00031 
00044     class SOPRANO_EXPORT StorageModel : public Model
00045     {
00046         Q_OBJECT
00047 
00048     public:
00049         virtual ~StorageModel();
00050 
00054         virtual bool isEmpty() const;
00055     
00059         virtual bool containsStatement( const Statement &statement ) const;
00060 
00064         virtual bool containsAnyStatement( const Statement &statement ) const;
00065 
00069         virtual Error::ErrorCode removeAllStatements( const Statement &statement );
00070 
00071         /*
00072          * Default implementation uses Query::Serializer for Query::QueryLanguageSparql and 
00073          * executeQuery( const QString&, Query::QueryLanguage, const QString& ) const.
00074          *
00075          * Be aware that one of the two query methods has to be re-implemented.
00076          * Otherwise calling one of them results in an endless loop.
00077          */
00078 //    virtual QueryResultIterator executeQuery( const Query::Query& query ) const;
00079 
00080         /*
00081          * Default implementation uses Query::Parser and 
00082          * executeQuery( const Query::Query& ) const.
00083          *
00084          * Be aware that one of the two query methods has to be re-implemented.
00085          * Otherwise calling one of them results in an endless loop.
00086          */
00087 //    virtual QueryResultIterator executeQuery( const QString& query, Query::QueryLanguage language, const QString& userQueryLanguage = QString() ) const;
00088 
00092         const Backend* backend() const;
00093 
00094         using Model::removeAllStatements;
00095         using Model::containsStatement;
00096         using Model::containsAnyStatement;
00097         
00098     protected:
00102         StorageModel( const Backend* backend );
00103 
00104     private:
00105         class Private;
00106         Private* const d;
00107     };
00108 }
00109 
00110 #endif

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