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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 JSONDBCACHINGLISTMODEL_P_H
#define JSONDBCACHINGLISTMODEL_P_H
#include <QHash>
#include <QMultiMap>
#include <QObject>
#include <QSet>
#include <QStringList>
#include <QPointer>
#include <QUuid>
#include <QJsonObject>
#include "jsondatabase.h"
#include "jsondbmodelutils.h"
#include "jsondbmodelcache.h"
QT_BEGIN_NAMESPACE_JSONDB
struct JsonDbModelIndexNSize
{
int index;
int count;
JsonDbModelIndexNSize() { clear();}
void clear()
{
index = -1;
count = 0;
}
};
class JsonDbCachingListModelPrivate
{
Q_DECLARE_PUBLIC(JsonDbCachingListModel)
public:
JsonDbCachingListModel *q_ptr;
QList<RequestInfo> partitionObjectDetails;
QList<QPointer<JsonDbPartition> >partitionObjects;
bool componentComplete;
bool resetModel;
int lowWaterMark;
JsonDbModelIndexNSize currentCacheRequest;
ModelCache objectCache;
JsonDbModelObjectType tmpObjects; // uuid -> object
JsonDbModelIndexType objectUuids; // sortvalue -> uuid
QMap<QString, SortingKey> objectSortValues; // uuid -> sortvalue
QList<RequestInfo> partitionKeyRequestDetails;
QList<JsonDbModelIndexType> partitionObjectUuids;
bool ascendingOrder;
QString indexName;
QString query;
QVariant queryOptions;
QString sortOrder;
QString queryForSortKeys;
QString queryForIndexSpec;
QList<IndexInfo> partitionIndexDetails;
int cacheSize;
int chunkSize;
QVariantMap roleMap;
QHash<int, QByteArray> roleNames;
QHash<int, QStringList> properties;
QList<NotificationItem> pendingNotifications;
QList<int> cacheMiss;
QMap<int, QJSValue> getCallbacks;
QList< QPair<int,int> > requestQueue;
QList< QPointer<ModelRequest> >keyRequests;
QList< QPointer<ModelRequest> >indexRequests;
QList< QPointer<ModelRequest> >valueRequests;
JsonDbCachingListModel::State state;
QModelIndex parent;
int errorCode;
QString errorString;
public:
JsonDbCachingListModelPrivate(JsonDbCachingListModel *q);
~JsonDbCachingListModelPrivate();
void init();
void setCacheParams(int maxItems);
void createObjectRequests(int startIndex, int maxItems);
void clearCache();
void removeLastItem();
void addItem(const QJsonObject &item, int partitionIndex);
void deleteItem(const QJsonObject &item, int partitionIndex);
void updateItem(const QJsonObject &item, int partitionIndex);
void fillKeys(const QList<QJsonObject> &items, int partitionIndex);
void fillData(const QList<QJsonObject> &items, int partitionIndex);
void reset();
void emitDataChanged(int from, int to);
bool checkForDefaultIndexTypes(int index);
void fetchIndexSpec(int index);
void fetchPartitionKeys(int index);
void initializeModel(bool reset = true);
void fetchModel(bool reset = true);
void fetchNextKeyChunk(int partitionIndex);
void fetchNextChunk(int partitionIndex);
void prefetchNearbyPages(int currentIndex);
void addIndexToQueue(int index);
void requestPageContaining(int index);
void clearNotification(int index);
void clearNotifications();
void createOrUpdateNotification(int index);
void createOrUpdateNotifications();
void parseSortOrder();
void setQueryForSortKeys();
void verifyIndexSpec(const QList<QJsonObject> &items, int partitionIndex);
int indexOfWatcher(QJsonDbWatcher *watcher);
void appendPartition(JsonDbPartition *v);
void clearPartitions();
QVariant getItem(int index);
QVariant getItem(int index, int role);
void queueGetCallback(int index, const QJSValue &callback);
void callGetCallback(int index, QJSValue callback);
JsonDbPartition* getItemPartition(int index);
int indexOf(const QString &uuid) const;
void set(int index, const QJSValue& valuemap,
const QJSValue &successCallback,
const QJSValue &errorCallback);
void sendNotification(int partitionIndex, const QJsonObject &object, QJsonDbWatcher::Action action);
// private slots
void _q_verifyDefaultIndexType(int index);
void _q_notificationsAvailable();
void _q_notificationError(QtJsonDb::QJsonDbWatcher::ErrorCode code, const QString &message);
void _q_readError(QtJsonDb::QJsonDbRequest::ErrorCode code, const QString & message);
void _q_keyResponse(int , const QList<QJsonObject>&, const QString&);
void _q_valueResponse(int , const QList<QJsonObject>&);
void _q_indexResponse(int , const QList<QJsonObject>&);
static void partitions_append(QQmlListProperty<JsonDbPartition> *p, JsonDbPartition *v);
static int partitions_count(QQmlListProperty<JsonDbPartition> *p);
static JsonDbPartition* partitions_at(QQmlListProperty<JsonDbPartition> *p, int idx);
static void partitions_clear(QQmlListProperty<JsonDbPartition> *p);
};
QT_END_NAMESPACE_JSONDB
#endif // JSONDBCACHINGLISTMODEL_P_H
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