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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 QJSONDBQUERYMODEL_P_P_H
#define QJSONDBQUERYMODEL_P_P_H
#include <QHash>
#include <QMultiMap>
#include <QObject>
#include <QSet>
#include <QStringList>
#include <QPointer>
#include <QUuid>
#include <QJsonObject>
#include <QJSValue>
#include "qjsondbquerymodel_p.h"
#include "qjsondbmodelutils_p.h"
#include "qjsondbmodelcache_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_JSONDB
struct JsonDbModelIndexNSize
{
int index;
int count;
JsonDbModelIndexNSize() { clear();}
void clear()
{
index = -1;
count = 0;
}
};
struct JsonDbAvailablePartitionsInfo;
class QJsonDbQueryModelPrivate
{
Q_DECLARE_PUBLIC(QJsonDbQueryModel)
public:
enum JsonDbPartitionState { PartitionStateNone,
PartitionStateOnline,
PartitionStateOffline,
PartitionStateError };
QJsonDbQueryModel *q_ptr;
QJsonDbConnection *mConnection;
QList<RequestInfo> partitionObjectDetails;
QList<QString> partitionObjects;
QList<JsonDbAvailablePartitionsInfo> availablePartitions;
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;
QVariantMap queryBindings;
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<NotificationItem> pendingPartitionObjectNotifications;
QList<int> cacheMiss;
QList< QPair<int,int> > requestQueue;
QList< QPointer<ModelRequest> >keyRequests;
QList< QPointer<ModelRequest> >indexRequests;
QList< QPointer<ModelRequest> >valueRequests;
QJsonDbQueryModel::State state;
QModelIndex parent;
int errorCode;
QString errorString;
// data() is often called for each role in same index in a row
// caching the last found object speeds this pattern quite a bit
// as some time is spent on finding the object from cache
// Note that this needs to be cleared on data changes
int lastQueriedIndex;
QJsonObject lastQueriedObject;
bool isCallable;
QJSValue injectCallback;
public:
QJsonDbQueryModelPrivate(QJsonDbQueryModel *q);
~QJsonDbQueryModelPrivate();
void init(QJsonDbConnection *dbConnection);
void setCacheParams(int maxItems);
void createObjectRequests(int startIndex, int maxItems);
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);
int indexOfPartitionObjectWatcher(QJsonDbWatcher *watcher);
void appendPartition(const QString& partitionName);
void clearPartitions();
void startWatchingPartitionObject(const QString& partitionName);
void onPartitionStateChanged();
bool partitionsReady();
QJsonObject getJsonObject(int index);
QVariant getItem(int index);
QVariant getItem(int index, int role);
QString getItemPartition(int index);
int indexOf(const QString &uuid) const;
void sendNotification(int partitionIndex, const QJsonObject &object, QJsonDbWatcher::Action action);
void generateCustomData(QJsonObject &val);
void generateCustomData(JsonDbModelObjectType &objects);
// private slots
void _q_verifyDefaultIndexType(int index);
void _q_notificationsAvailable();
void _q_partitionWatcherNotificationsAvailable();
void _q_partitionWatcherNotificationError(QtJsonDb::QJsonDbWatcher::ErrorCode code, const QString &message);
void _q_notificationError(QtJsonDb::QJsonDbWatcher::ErrorCode code, const QString &message);
void _q_partitionObjectQueryFinished();
void _q_partitionObjectQueryError();
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>&);
};
struct JsonDbAvailablePartitionsInfo
{
QPointer<QJsonDbWatcher> watcher;
QJsonDbQueryModelPrivate::JsonDbPartitionState state;
JsonDbAvailablePartitionsInfo() { clear();}
void clear()
{
state = QJsonDbQueryModelPrivate::PartitionStateNone;
if (watcher) {
delete watcher;
watcher = 0;
}
}
};
QT_END_NAMESPACE_JSONDB
QT_END_HEADER
#endif // QJSONDBQUERYMODEL_P_P_H
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