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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 JSONDBLISTMODEL_P_H
#define JSONDBLISTMODEL_P_H
#include <QHash>
#include <QMultiMap>
#include <QObject>
#include <QSet>
#include <QStringList>
#include <QPointer>
#include <QJsonDbWatcher>
#include <QJsonDbReadRequest>
#include <QJsonDbUpdateRequest>
#include "jsondbmodelutils.h"
QT_BEGIN_NAMESPACE_JSONDB
class JsonDbListModelPrivate
{
Q_DECLARE_PUBLIC(JsonDbListModel)
public:
JsonDbListModel *q_ptr;
QPointer<JsonDbPartition> partitionObject;
QPointer<JsonDbPartition> defaultPartitionObject;
int chunkSize;
int lowWaterMark;
int maxCacheSize;
int totalRowCount;
int cacheStart;
int cacheEnd;
int newChunkOffset;
QMap< QPointer<QJsonDbWriteRequest>, CallbackInfo> updateCallbacks;
QMap< QPointer<QJsonDbReadRequest>, CallbackInfo> sectionIndexCallbacks;
QHash<QString,QVariantMap> data; // cache that holds all the items.
QMultiMap<JsonDbSortKey,QString> objectUuids; // sort value -> uuid
QMap<QString,JsonDbSortKey> objectSortValues; // uuid -> sort value
QList<QString> cachedUuids; // in the correct sort order.
QStringList orderDirections;
QStringList orderProperties;
QList<QStringList> orderPaths;
QString query;
QString queryWithoutSort;
QVariantMap lastFetchedItem;
int lastFetchedIndex;
bool requestInProgress;
bool componentComplete;
bool resetModel;
bool updateReceived;
bool totalRowCountRecieved;
QVariantMap roleMap;
QHash<int,QByteArray> roleNames;
QHash<int,QStringList> properties;
QList<NotifyItem> pendingNotifications;
ModelRequest valueRequest;
ModelRequest countRequest;
QPointer<QJsonDbWatcher> watcher;
enum State {
None,
Querying,
Ready
};
State state;
QModelIndex parent;
int errorCode;
QString errorString;
public:
JsonDbListModelPrivate(JsonDbListModel *q);
~JsonDbListModelPrivate();
void init();
void clearCache(int newStart = 0);
int makeSpaceFor(int count, int insertAt);
void removeItem(int index);
int findSortedPosition(const QString& uuid);
JsonDbSortKey sortKey(const QVariantMap &object);
void insertItem(const QVariantMap &item, bool emitCountChanged = true);
void deleteItem(const QVariantMap &item, bool emitCountChanged = true);
void updateItem(const QVariantMap &item);
QVariantMap getItem(int index, bool handleCacheMiss, bool &cacheMiss);
QVariantMap getItem(const QModelIndex &modelIndex, int role, bool handleCacheMiss, bool &cacheMiss);
void set(int index, const QJSValue& valuemap, const QJSValue &successCallback,
const QJSValue &errorCallback);
void setProperty(int index, const QString& property, const QVariant& value,
const QJSValue &successCallback, const QJSValue &errorCallback);
void fetchChunkSynchronous(int offset);
void updateCache(const QVariantList &items);
void resetModelFinished();
void update(int index, const QVariantMap &item,
const QJSValue &successCallback, const QJSValue &errorCallback);
void _q_requestAnotherChunk(int offset);
void _q_notificationsAvailable();
void _q_notificationError(QtJsonDb::QJsonDbWatcher::ErrorCode code, const QString &message);
void _q_valueResponse(int , const QList<QJsonObject>&);
void _q_countResponse(int , const QList<QJsonObject>&);
void _q_readError(QtJsonDb::QJsonDbRequest::ErrorCode code, const QString & message);
void _q_sectionIndexResponse();
void _q_sectionIndexError(QtJsonDb::QJsonDbRequest::ErrorCode code, const QString & message);
void _q_updateResponse();
void _q_updateError(QtJsonDb::QJsonDbRequest::ErrorCode code, const QString & message);
void sendNotifications(const QVariantMap &v, QJsonDbWatcher::Action action);
void populateModel();
void clearNotification();
void createOrUpdateNotification();
bool findSortOrder();
inline int itemsInCache() { return cacheEnd - cacheStart;}
};
QT_END_NAMESPACE_JSONDB
#endif // JSONDBLISTMODEL_P_H
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