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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 JSONDB_PARTITION_P_H
#define JSONDB_PARTITION_P_H
#include <QMultiHash>
#include <QStringList>
#include <QSet>
#include <QTimer>
#include <QVector>
#include <QPointer>
#include "jsondberrors.h"
#include "jsondbnotification.h"
#include "jsondbobjectkey.h"
#include "jsondbowner.h"
#include "jsondbpartition.h"
#include "jsondbpartitionglobal.h"
#include "jsondbschemamanager_p.h"
#include "jsondbstat.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_JSONDB_PARTITION
class JsonDbBtree;
class JsonDbOwner;
class JsonDbObjectTable;
class JsonDbIndexSpec;
class JsonDbIndex;
class JsonDbIndexQuery;
class JsonDbView;
class Q_JSONDB_PARTITION_EXPORT JsonDbPartitionPrivate
{
Q_DECLARE_PUBLIC(JsonDbPartition)
public:
JsonDbPartitionPrivate(JsonDbPartition *q);
~JsonDbPartitionPrivate();
bool beginTransaction();
JsonDbPartition::TxnCommitResult commitTransaction(quint32 stateNumber = 0);
bool abortTransaction();
void initIndexes();
void initSchemas();
JsonDbObjectTable *findObjectTable(const QString &objectType) const;
bool addIndex(const JsonDbIndexSpec &indexSpec);
bool removeIndex(const QString &indexName, const QString &objectType = QString());
JsonDbView *addView(const QString &viewType);
void removeView(const QString &viewType);
bool getObject(const QString &uuid, JsonDbObject &object, const QString &objectType = QString(), bool includeDeleted = false) const;
bool getObject(const ObjectKey & objectKey, JsonDbObject &object, const QString &objectType = QString(), bool includeDeleted = false) const;
GetObjectsResult getObjects(const QString &keyName, const QJsonValue &key, const QString &type = QString(),
bool updateViews = true);
JsonDbIndexQuery *compileIndexQuery(const JsonDbOwner *owner, const JsonDbQuery &query);
void doIndexQuery(const JsonDbOwner *owner, JsonDbObjectList &results, int &limit, int &offset,
JsonDbIndexQuery *indexQuery);
static void sortValues(const JsonDbQuery &query, JsonDbObjectList &results, JsonDbObjectList &joinedResults);
bool checkCanAddSchema(const JsonDbObject &schema, const JsonDbObject &oldSchema, QString &errorMsg);
bool checkCanRemoveSchema(const JsonDbObject &schema, QString &errorMsg);
bool validateSchema(const QString &schemaName, const JsonDbObject &object, QString &errorMsg);
bool checkNaturalObjectType(const JsonDbObject &object, QString &errorMsg);
JsonDbError::ErrorCode checkBuiltInTypeValidity(const JsonDbObject &object, const JsonDbObject &oldObject, QString &errorMsg);
JsonDbError::ErrorCode checkBuiltInTypeAccessControl(bool forCreation, const JsonDbOwner *owner, const JsonDbObject &object,
const JsonDbObject &oldObject, QString &errorMsg);
void updateBuiltInTypes(const JsonDbObject &object, const JsonDbObject &oldObject);
void setSchema(const QString &schemaName, const QJsonObject &schema);
void removeSchema(const QString &schemaName);
void updateSpaceStatus();
bool hasSpace();
void updateEagerViews(const QSet<QString> &eagerViewTypes, const JsonDbUpdateList &changes);
void updateEagerViewTypes(const QString &viewType, quint32 stateNumber, int increment = 1);
void updateEagerViewStateNumbers();
void notifyHistoricalChanges(JsonDbNotification *n);
void _q_mainSyncTimer();
void _q_indexSyncTimer();
void _q_objectsUpdated(bool viewUpdated, const JsonDbUpdateList &changes);
class EdgeCount {
public:
EdgeCount() : count(0){}
int count;
bool operator >(int val) const { return count > val; }
bool operator ==(int val) const { return count == val; }
EdgeCount &operator +=(int delta) { count += delta; if (count < 0) count = 0; return *this; }
};
typedef QHash<QString, EdgeCount> ViewEdgeWeights;
typedef QHash<QString, ViewEdgeWeights> WeightedSourceViewGraph;
JsonDbPartition *q_ptr;
JsonDbObjectTable *mObjectTable;
QVector<JsonDbObjectTable *> mTableTransactions;
JsonDbPartitionSpec mSpec;
QString mFilename;
int mTransactionDepth;
bool mTransactionOk;
QHash<QString,QPointer<JsonDbView> > mViews;
QSet<QString> mViewTypes;
QMultiHash<QString, QPointer<JsonDbNotification> > mKeyedNotifications;
WeightedSourceViewGraph mEagerViewSourceGraph;
JsonDbSchemaManager mSchemas;
QTimer *mMainSyncTimer;
QTimer *mIndexSyncTimer;
JsonDbOwner *mDefaultOwner;
bool mIsOpen;
JsonDbPartition::DiskSpaceStatus mDiskSpaceStatus;
};
class WithTransaction {
public:
WithTransaction(JsonDbPartitionPrivate *partition = 0, QString name=QString())
: mPartition(0)
{
Q_UNUSED(name)
if (partition && partition->mIsOpen)
setPartition(partition);
}
~WithTransaction()
{
if (mPartition)
mPartition->commitTransaction();
}
void setPartition(JsonDbPartitionPrivate *partition)
{
Q_ASSERT(!mPartition);
mPartition = partition;
if (!mPartition->beginTransaction())
mPartition = 0;
}
bool addObjectTable(JsonDbObjectTable *table);
void abort()
{
if (mPartition)
mPartition->abortTransaction();
mPartition = 0;
}
JsonDbPartition::TxnCommitResult commit(quint32 stateNumber = 0)
{
JsonDbPartition::TxnCommitResult result;
if (mPartition)
result = mPartition->commitTransaction(stateNumber);
mPartition = 0;
return result;
}
private:
JsonDbPartitionPrivate *mPartition;
};
QDebug &operator<<(QDebug &, const ObjectKey &);
QT_END_NAMESPACE_JSONDB_PARTITION
QT_END_HEADER
#endif // JSONDB_PARTITION_P_H
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