/****************************************************************************

**

** Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team.

** All rights reserved.

**

** All rights reserved.

**

** 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.

**

****************************************************************************/

#ifndef QINDEXREADER_P_H

#define QINDEXREADER_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API. It exists for the convenience

// of the help generator tools. This header file may change from version

// to version without notice, or even be removed.

//

// We mean it.

//

#include "qterm_p.h"

#include "qdocument_p.h"

#include "qclucene_global_p.h"

#include <QtCore/QList>

#include <QtCore/QString>

#include <QtCore/QSharedDataPointer>

#include <QtCore/QSharedData>

CL_NS_DEF(index)

    class IndexReader;

CL_NS_END

CL_NS_USE(index)

QT_BEGIN_NAMESPACE

class QCLuceneIndexWriter;

class QCLuceneIndexSearcher;

class QHELP_EXPORT QCLuceneIndexReaderPrivate : public QSharedData

{

public:

    QCLuceneIndexReaderPrivate();

    QCLuceneIndexReaderPrivate(const QCLuceneIndexReaderPrivate &other);

    ~QCLuceneIndexReaderPrivate();

    IndexReader *reader;

    bool deleteCLuceneIndexReader;

private:

    QCLuceneIndexReaderPrivate &operator=(const QCLuceneIndexReaderPrivate &other);

};

class QHELP_EXPORT QCLuceneIndexReader

{

public:

    enum FieldOption {

		ALL = 1,

		INDEXED = 2,

		UNINDEXED = 4,

		INDEXED_WITH_TERMVECTOR = 8,

		INDEXED_NO_TERMVECTOR = 16,

		TERMVECTOR = 32,

		TERMVECTOR_WITH_POSITION = 64,

		TERMVECTOR_WITH_OFFSET = 128,

		TERMVECTOR_WITH_POSITION_OFFSET = 256

	};

    virtual ~QCLuceneIndexReader();

    static bool isLuceneFile(const QString &filename);

    static bool indexExists(const QString &directory);

    static QCLuceneIndexReader open(const QString &path);

    static void unlock(const QString &path);

    static bool isLocked(const QString &directory);

	static quint64 lastModified(const QString &directory);

	static qint64 getCurrentVersion(const QString &directory);

    void close();

    bool isCurrent();

	void undeleteAll();

	qint64 getVersion();

	void deleteDocument(qint32 docNum);

    bool hasNorms(const QString &field);

    qint32 deleteDocuments(const QCLuceneTerm &term);

    bool document(qint32 index, QCLuceneDocument &document);

    void setNorm(qint32 doc, const QString &field, qreal value);

    void setNorm(qint32 doc, const QString &field, quint8 value);

protected:

    friend class QCLuceneIndexWriter;

    friend class QCLuceneIndexSearcher;

    QSharedDataPointer<QCLuceneIndexReaderPrivate> d;

private:

    QCLuceneIndexReader();

};

QT_END_NAMESPACE

#endif  // QINDEXREADER_P_H