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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtAddOn.JsonDb module 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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef JSONDBQUERYOBJECT_H
#define JSONDBQUERYOBJECT_H
#include <QObject>
#include <QVariant>
#include <QPointer>
#include <QJSValue>
#include <QQmlParserStatus>
#include <QQmlListProperty>
#include <QJsonDbReadRequest>
QT_BEGIN_NAMESPACE_JSONDB
class JsonDbPartition;
class JsonDbPartitionPrivate;
class JsonDbQueryObject : public QObject, public QQmlParserStatus
{
Q_OBJECT
Q_INTERFACES(QQmlParserStatus)
public:
Q_ENUMS(Status)
enum Status { Null, Loading, Ready, Error };
Q_PROPERTY(QString query READ query WRITE setQuery)
Q_PROPERTY(JsonDbPartition* partition READ partition WRITE setPartition)
Q_PROPERTY(quint32 stateNumber READ stateNumber)
Q_PROPERTY(int limit READ limit WRITE setLimit)
Q_PROPERTY(Status status READ status NOTIFY statusChanged)
Q_PROPERTY(QVariantMap error READ error NOTIFY errorChanged)
Q_PROPERTY(QVariantMap bindings READ bindings WRITE setBindings)
JsonDbQueryObject(QObject *parent = 0);
~JsonDbQueryObject();
QString query();
void setQuery(const QString &newQuery);
JsonDbPartition* partition();
void setPartition(JsonDbPartition* newPartition);
quint32 stateNumber() const;
int limit();
void setLimit(int newLimit);
JsonDbQueryObject::Status status() const;
QVariantMap error() const;
QVariantMap bindings() const;
void setBindings(const QVariantMap &newBindings);
void classBegin() {}
void componentComplete();
Q_INVOKABLE int start();
Q_INVOKABLE QJSValue takeResults();
Q_SIGNALS:
void resultsReady(int resultsAvailable);
void finished();
void statusChanged(JsonDbQueryObject::Status newStatus);
void errorChanged(const QVariantMap &newError);
private Q_SLOTS:
void setError(QtJsonDb::QJsonDbRequest::ErrorCode code, const QString & message);
void setReadyStatus();
private:
bool completed;
int queryLimit;
QString queryString;
QVariantList results;
QPointer<JsonDbPartition> partitionObject;
QPointer<JsonDbPartition> defaultPartitionObject;
int errorCode;
QString errorString;
Status objectStatus;
QVariantMap queryBindings;
QPointer<QJsonDbReadRequest> readRequest;
void clearError();
inline bool parametersReady();
void checkForReadyStatus();
friend class JsonDbPartition;
friend class JsonDbPartitionPrivate;
};
QT_END_NAMESPACE_JSONDB
#endif //JSONDBQUERYOBJECT_H
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