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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 JSONDB_INDEX_H
#define JSONDB_INDEX_H
#include <QObject>
#include <QJSEngine>
#include <QPointer>
#include <QStringList>
#include <qjsonarray.h>
#include <qjsonobject.h>
#include <qjsonvalue.h>
#include "jsondbobject.h"
#include "jsondb-global.h"
#include "jsondbobjectkey.h"
#include "jsondbmanagedbtreetxn.h"
#include "qbtreecursor.h"
#include "qbtreetxn.h"
#include "jsondbcollator.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_JSONDB
class JsonDbManagedBtree;
class JsonDbPartition;
class JsonDbObjectTable;
class JsonDbIndex : public QObject
{
Q_OBJECT
public:
JsonDbIndex(const QString &fileName, const QString &indexName, const QString &propertyName,
const QString &propertyType, const QString &locale, const QString &collation,
const QString &casePreference, Qt::CaseSensitivity caseSensitivity,
JsonDbObjectTable *objectTable);
~JsonDbIndex();
QString propertyName() const { return mPropertyName; }
QStringList fieldPath() const { return mPath; }
QString propertyType() const { return mPropertyType; }
JsonDbManagedBtree *bdb();
bool setPropertyFunction(const QString &propertyFunction);
void indexObject(const ObjectKey &objectKey, JsonDbObject &object, quint32 stateNumber);
void deindexObject(const ObjectKey &objectKey, JsonDbObject &object, quint32 stateNumber);
quint32 stateNumber() const;
JsonDbManagedBtreeTxn begin();
bool commit(quint32);
bool abort();
bool clearData();
void checkIndex();
void setCacheSize(quint32 cacheSize);
bool open();
void close();
bool exists() const;
static bool validateIndex(const JsonDbObject &newIndex, const JsonDbObject &oldIndex, QString &message);
static QString determineName(const JsonDbObject &index);
private:
QList<QJsonValue> indexValues(JsonDbObject &object);
QJsonValue indexValue(const QJsonValue &v);
private slots:
void propertyValueEmitted(QJSValue);
private:
JsonDbObjectTable *mObjectTable;
QString mFileName;
QString mPropertyName;
QStringList mPath;
QString mPropertyType;
QString mLocale;
QString mCollation;
QString mCasePreference;
Qt::CaseSensitivity mCaseSensitivity;
#ifndef NO_COLLATION_SUPPORT
JsonDbCollator mCollator;
#endif
quint32 mStateNumber;
QScopedPointer<JsonDbManagedBtree> mBdb;
QJSEngine *mScriptEngine;
QJSValue mPropertyFunction;
QList<QJsonValue> mFieldValues;
JsonDbManagedBtreeTxn mWriteTxn;
quint32 mCacheSize;
};
class JsonDbIndexCursor
{
public:
JsonDbIndexCursor(JsonDbIndex *index);
~JsonDbIndexCursor();
bool seek(const QJsonValue &value);
bool seekRange(const QJsonValue &value);
bool first();
bool current(QJsonValue &key, ObjectKey &value);
bool currentKey(QJsonValue &key);
bool currentValue(ObjectKey &value);
bool next();
bool prev();
private:
QBtreeTxn *mTxn;
QBtreeCursor mCursor;
JsonDbIndex *mIndex;
JsonDbIndexCursor(const JsonDbIndexCursor&);
};
class IndexSpec {
public:
QString name;
QString propertyName;
QStringList path;
QString propertyType;
QString locale;
QString collation;
QString casePreference;
Qt::CaseSensitivity caseSensitivity;
QString objectType;
bool lazy;
QPointer<JsonDbIndex> index;
};
QT_END_NAMESPACE_JSONDB
QT_END_HEADER
#endif // JSONDB_INDEX_H
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