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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtAddOn.JsonDb module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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(QT_PREPEND_NAMESPACE_JSONDB(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);
QtJsonDb::JsonDbPartition* partition();
void setPartition(QT_PREPEND_NAMESPACE_JSONDB(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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