soprano/statement.h

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00001 /* This file is part of Soprano Project.
00002  *
00003  * Copyright (C) 2006 Daniele Galdi <daniele.galdi@gmail.com>
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_STATEMENT_H
00023 #define SOPRANO_STATEMENT_H
00024 
00025 #include "node.h"
00026 #include "soprano_export.h"
00027 
00028 namespace Soprano
00029 {
00045     class SOPRANO_EXPORT Statement
00046     {
00047     public:
00049 
00052         Statement();
00053 
00065         Statement( const Node &subject, const Node &predicate, const Node &object, const Node &context = Node() );
00066 
00067         Statement( const Statement &other );
00068 
00069         virtual ~Statement();
00070 
00071         Statement& operator=( const Statement& other );
00073 
00075         bool operator==( const Statement& other ) const;
00076         bool operator!=( const Statement& other ) const;
00077 
00087         bool matches( const Statement& other ) const;
00089 
00091 
00098         bool isValid() const;
00100 
00102 
00105         Node subject() const;
00106 
00110         Node predicate() const;
00111 
00115         Node object() const;
00116 
00120         Node context() const;
00122 
00124 
00129         void setSubject( const Node &subject );
00130 
00136         void setPredicate( const Node &predicate );
00142         void setObject( const Node &object );
00143 
00149         void setContext( const Node &context );
00151 
00152     private:
00153         class Private;
00154         QSharedDataPointer<Private> d;
00155     };
00156 }
00157 
00158 SOPRANO_EXPORT QDebug operator<<( QDebug s, const Soprano::Statement& );
00159 SOPRANO_EXPORT QTextStream& operator<<( QTextStream& s, const Soprano::Statement& );
00160 
00161 #endif // SOPRANO_STATEMENT_H
00162 

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