variant.h

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/*
 * This file is part of the Nepomuk KDE project.
 * Copyright (C) 2006-2009 Sebastian Trueg <trueg@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef _NEPOMUK_VARIANT_H_
#define _NEPOMUK_VARIANT_H_

#include "nepomuk_export.h"
#include "resource.h"

#include <QtCore/QDateTime>
#include <QtCore/QUrl>
#include <QtCore/QVariant>

namespace Soprano {
    class Node;
}

namespace Nepomuk {

    class Resource;

    class NEPOMUK_EXPORT Variant
    {
    public:
        Variant();
        ~Variant();
        Variant( const Variant& other );

        explicit Variant( const QVariant& other );
        Variant( int i );
        Variant( qlonglong i );
        Variant( uint i );
        Variant( qulonglong i );
        Variant( bool b );
        Variant( double d );
        Variant( const char* string );
        Variant( const QString& string );
        Variant( const QDate& date );
        Variant( const QTime& time );
        Variant( const QDateTime& datetime );
        Variant( const QUrl& url );
        Variant( const Resource& r );
        Variant( const QList<int>& i );
        Variant( const QList<qlonglong>& i );
        Variant( const QList<uint>& i );
        Variant( const QList<qulonglong>& i );
        Variant( const QList<bool>& b );
        Variant( const QList<double>& d );
        Variant( const QStringList& stringlist );
        Variant( const QList<QDate>& date );
        Variant( const QList<QTime>& time );
        Variant( const QList<QDateTime>& datetime );
        Variant( const QList<QUrl>& url );
        Variant( const QList<Resource>& r );

        Variant( const QList<Variant>& vl );

        Variant& operator=( const Variant& );
        Variant& operator=( int i );
        Variant& operator=( qlonglong i );
        Variant& operator=( uint i );
        Variant& operator=( qulonglong i );
        Variant& operator=( bool b );
        Variant& operator=( double d );
        Variant& operator=( const QString& string );
        Variant& operator=( const QDate& date );
        Variant& operator=( const QTime& time );
        Variant& operator=( const QDateTime& datetime );
        Variant& operator=( const QUrl& url );
        Variant& operator=( const Resource& r );
        Variant& operator=( const QList<int>& i );
        Variant& operator=( const QList<qlonglong>& i );
        Variant& operator=( const QList<uint>& i );
        Variant& operator=( const QList<qulonglong>& i );
        Variant& operator=( const QList<bool>& b );
        Variant& operator=( const QList<double>& d );
        Variant& operator=( const QStringList& stringlist );
        Variant& operator=( const QList<QDate>& date );
        Variant& operator=( const QList<QTime>& time );
        Variant& operator=( const QList<QDateTime>& datetime );
        Variant& operator=( const QList<QUrl>& url );
        Variant& operator=( const QList<Resource>& r );

        void append( int i );
        void append( qlonglong i );
        void append( uint i );
        void append( qulonglong i );
        void append( bool b );
        void append( double d );
        void append( const QString& string );
        void append( const QDate& date );
        void append( const QTime& time );
        void append( const QDateTime& datetime );
        void append( const QUrl& url );
        void append( const Resource& r );

        void append( const Variant& v );

        bool operator==( const Variant& other ) const;

        bool operator!=( const Variant& other ) const;

        bool isValid() const;

        int type() const;

        int simpleType() const;

        bool isList() const;

        bool isInt() const;
        bool isInt64() const;
        bool isUnsignedInt() const;
        bool isUnsignedInt64() const;
        bool isBool() const;
        bool isDouble() const;
        bool isString() const;
        bool isDate() const;
        bool isTime() const;
        bool isDateTime() const;
        bool isUrl() const;
        bool isResource() const;

        bool isIntList() const;
        bool isInt64List() const;
        bool isUnsignedIntList() const;
        bool isUnsignedInt64List() const;
        bool isBoolList() const;
        bool isDoubleList() const;
        bool isStringList() const;
        bool isDateList() const;
        bool isTimeList() const;
        bool isDateTimeList() const;
        bool isUrlList() const;
        bool isResourceList() const;

        QVariant variant() const;

        int toInt() const;

        qlonglong toInt64() const;

        uint toUnsignedInt() const;

        qulonglong toUnsignedInt64() const;

        bool toBool() const;

        double toDouble() const;

        QString toString() const;

        QDate toDate() const;

        QTime toTime() const;

        QDateTime toDateTime() const;

        QUrl toUrl() const;

        Resource toResource() const;

        QList<int> toIntList() const;
        QList<qlonglong> toInt64List() const;
        QList<uint> toUnsignedIntList() const;
        QList<qulonglong> toUnsignedInt64List() const;
        QList<bool> toBoolList() const;
        QList<double> toDoubleList() const;

        QStringList toStringList() const;
        QList<QDate> toDateList() const;
        QList<QTime> toTimeList() const;
        QList<QDateTime> toDateTimeList() const;
        QList<QUrl> toUrlList() const;
        QList<Resource> toResourceList() const;

        QList<Variant> toVariantList() const;

        Soprano::Node toNode() const;

        QList<Soprano::Node> toNodeList() const;
        
        static Variant fromString( const QString& value, int type );

        static Variant fromNode( const Soprano::Node& node );

        static Variant fromNodeList( const QList<Soprano::Node>& node );

    private:
        class Private;
        Private* const d;
    };
}


NEPOMUK_EXPORT QDebug operator<<( QDebug dbg, const Nepomuk::Variant& );

Q_DECLARE_METATYPE(Nepomuk::Resource)
Q_DECLARE_METATYPE(QList<Nepomuk::Resource>)
Q_DECLARE_METATYPE(QList<int>)
Q_DECLARE_METATYPE(QList<qlonglong>)
Q_DECLARE_METATYPE(QList<uint>)
Q_DECLARE_METATYPE(QList<qulonglong>)
Q_DECLARE_METATYPE(QList<double>)
Q_DECLARE_METATYPE(QList<bool>)
Q_DECLARE_METATYPE(QList<QDate>)
Q_DECLARE_METATYPE(QList<QTime>)
Q_DECLARE_METATYPE(QList<QDateTime>)
Q_DECLARE_METATYPE(QList<QUrl>)

#endif