00001 /**************************************************************************** 00002 ** This file is part of Cubi, a Sparql query builder for the Qt framework 00003 ** 00004 ** Copyright (c) 2010-2011 Nokia Corporation and/or its subsidiary(-ies). 00005 ** 00006 ** Contact: Nokia Corporation (info@qt.nokia.com) 00007 ** 00008 ** 00009 ** GNU Lesser General Public License Usage 00010 ** 00011 ** This file may be used under the terms of the GNU Lesser General Public 00012 ** License version 2.1 as published by the Free Software Foundation and 00013 ** appearing in the file LICENSE.LGPL included in the packaging of this file. 00014 ** Please review the following information to ensure the GNU Lesser General 00015 ** Public License version 2.1 requirements will be met: 00016 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00017 ** 00018 ** In addition, as a special exception, Nokia gives you certain additional 00019 ** rights. These rights are described in the Nokia Qt LGPL Exception 00020 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 00021 ** 00022 ** Other Usage 00023 ** 00024 ** Alternatively, this file may be used in accordance with the terms and 00025 ** conditions contained in a signed written agreement between you and Nokia. 00026 ** 00027 ** If you have questions regarding the use of this file, please contact 00028 ** Nokia at info@qt.nokia.com. 00029 ****************************************************************************/ 00030 00031 #ifndef CUBI_PROJECTION_H 00032 #define CUBI_PROJECTION_H 00033 00034 #include "function.h" 00035 #include "literalvalue.h" 00036 #include "variable.h" 00037 00038 CUBI_BEGIN_NAMESPACE 00039 00040 class ProjectionData; 00041 class Select; 00042 00043 class Projection { 00044 00045 public: 00046 enum Type { 00047 VariableProjection, 00048 FunctionProjection, 00049 SelectProjection, 00050 LiteralProjection 00051 }; 00052 00053 CUBI_EXPLICIT Projection(const Variable &variable); 00054 CUBI_EXPLICIT Projection(const Function &function, const Variable &alias = Variable::invalid()); 00055 CUBI_EXPLICIT Projection(const Select &select, const Variable &alias = Variable::invalid()); 00056 CUBI_EXPLICIT Projection(const LiteralValue &value, const Variable &alias = Variable::invalid()); 00057 Projection(const Projection &other); 00058 Projection& operator=(const Projection &other); 00059 bool operator==(const Projection &other) const; 00060 bool operator!=(const Projection &other) const; 00061 ~Projection(); 00062 00063 Type type() const; 00064 00065 Variable variable() const; 00066 Function function() const; 00067 Select select() const; 00068 LiteralValue literalValue() const; 00069 Variable alias() const; 00070 00071 QString sparql(Options::SparqlOptions options = Options::DefaultSparqlOptions) const; 00072 00073 private: 00074 QSharedDataPointer<ProjectionData> d; 00075 }; 00076 00077 CUBI_END_NAMESPACE 00078 00079 #endif