qsparql_tracker_direct_select_result_p.h

/****************************************************************************
**
** Copyright (C) 2010-2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (ivan.frade@nokia.com)
**
** This file is part of the QtSparql module (not yet part of the Qt Toolkit).
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at ivan.frade@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
 
#ifndef QSPARQL_TRACKER_DIRECT_SELECT_RESULT_P_H
#define QSPARQL_TRACKER_DIRECT_SELECT_RESULT_P_H
 
#include "qsparql_tracker_direct_result_p.h"
#include <QtCore/qvector.h>
#include <QtCore/qstring.h>
#include <QtCore/qmutex.h>
 
#include <tracker-sparql.h>
 
QT_BEGIN_HEADER
 
QT_BEGIN_NAMESPACE
 
class QTrackerDirectDriverPrivate;
 
class QTrackerDirectSelectResult : public QTrackerDirectResult
{
    Q_OBJECT
public:
    explicit QTrackerDirectSelectResult(QTrackerDirectDriverPrivate* p,
                                  const QString& query,
                                  QSparqlQuery::StatementType type,
                                  const QSparqlQueryOptions& options);
    ~QTrackerDirectSelectResult();
 
    Q_INVOKABLE void startFetcher();
 
    bool runQuery();
 
    // Implementation of the QSparqlResult interface
    virtual void waitForFinished();
 
    virtual QSparqlResultRow current() const;
    virtual QSparqlBinding binding(int i) const;
    virtual QVariant value(int i) const;
    virtual int size() const;
    virtual bool hasFeature(QSparqlResult::Feature feature) const;
 
public Q_SLOTS:
    virtual void exec();
 
private:
    void terminate();
    bool fetchNextResult();
    bool fetchBoolResult();
    void emitDataReady(int totalCount);
 
    //QTrackerDirectResult implementation
    virtual void stopAndWait();
    virtual void run();
 
    TrackerSparqlCursor* cursor;
    mutable QMutex resultMutex;
    QVector<QString> columnNames;
    QList<QVector<QVariant> > results;
};
 
QT_END_NAMESPACE
 
QT_END_HEADER
 
#endif // QSPARQL_TRACKER_DIRECT_RESULT_P_H