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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 QJSONDB_WATCHER_H
#define QJSONDB_WATCHER_H
#include <QtCore/QObject>
#include <QtCore/QJsonObject>
#include <QtCore/QUuid>
#include <QtJsonDb/qjsondbglobal.h>
#include <QtJsonDb/qjsondbrequest.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_JSONDB
class QJsonDbNotification;
class QJsonDbWatcherPrivate;
class Q_JSONDB_EXPORT QJsonDbWatcher : public QObject
{
Q_OBJECT
Q_PROPERTY(Actions watchedActions READ watchedActions WRITE setWatchedActions)
Q_PROPERTY(QString query READ query WRITE setQuery)
Q_PROPERTY(QString partition READ partition WRITE setPartition)
Q_PROPERTY(Status status READ status NOTIFY statusChanged)
Q_PROPERTY(quint32 initialStateNumber READ initialStateNumber WRITE setInitialStateNumber)
Q_PROPERTY(quint32 lastStateNumber READ lastStateNumber NOTIFY lastStateNumberChanged)
public:
enum Action {
Created = 0x01, // ### TODO: rename me to StartsMatching ?
Updated = 0x02,
Removed = 0x04,
All = 0xFF
};
Q_DECLARE_FLAGS(Actions, Action)
enum Status {
Inactive,
Activating,
Active
};
Status status() const;
inline bool isInactive() const { return status() == QJsonDbWatcher::Inactive; }
inline bool isActivating() const { return status() == QJsonDbWatcher::Activating; }
inline bool isActive() const { return status() == QJsonDbWatcher::Active; }
enum ErrorCode {
NoError = QJsonDbRequest::NoError,
InvalidRequest = QJsonDbRequest::InvalidRequest,
OperationNotPermitted = QJsonDbRequest::OperationNotPermitted,
InvalidPartition = QJsonDbRequest::InvalidPartition,
DatabaseConnectionError = QJsonDbRequest::DatabaseConnectionError,
MissingQuery = QJsonDbRequest::MissingQuery,
InvalidStateNumber = QJsonDbRequest::InvalidStateNumber
};
QJsonDbWatcher(QObject *parent = 0);
~QJsonDbWatcher();
void setWatchedActions(Actions actions);
Actions watchedActions() const;
void setQuery(const QString &query);
QString query() const;
void bindValue(const QString &placeHolder, const QJsonValue &val);
QJsonValue boundValue(const QString &placeHolder) const;
QMap<QString,QJsonValue> boundValues() const;
void clearBoundValues();
void setPartition(const QString &partition);
QString partition() const;
void setInitialStateNumber(quint32 stateNumber);
quint32 initialStateNumber() const;
quint32 lastStateNumber() const;
QList<QJsonDbNotification> takeNotifications(int amount = -1);
Q_SIGNALS:
void notificationsAvailable(int count);
void statusChanged(QtJsonDb::QJsonDbWatcher::Status newStatus);
void error(QtJsonDb::QJsonDbWatcher::ErrorCode code, const QString &message);
// signals for properties
void lastStateNumberChanged(int stateNumber);
private:
Q_DECLARE_PRIVATE(QJsonDbWatcher)
QScopedPointer<QJsonDbWatcherPrivate> d_ptr;
Q_PRIVATE_SLOT(d_func(), void _q_onFinished())
Q_PRIVATE_SLOT(d_func(), void _q_onError(QtJsonDb::QJsonDbRequest::ErrorCode,QString))
friend class QJsonDbConnection;
friend class QJsonDbConnectionPrivate;
};
class Q_JSONDB_EXPORT QJsonDbNotification
{
public:
QJsonDbNotification(const QJsonObject &object, QJsonDbWatcher::Action action, quint32 stateNumber);
QJsonObject object() const;
QJsonDbWatcher::Action action() const;
quint32 stateNumber() const;
private:
QJsonObject obj;
QJsonDbWatcher::Action act;
quint32 state;
void *reserved;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QJsonDbWatcher::Actions)
QT_END_NAMESPACE_JSONDB
QT_END_HEADER
#endif // QJSONDB_WATCHER_H
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