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

**

** 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 QQUERYPARSER_P_H

#define QQUERYPARSER_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 "qreader_p.h"

#include "qanalyzer_p.h"

#include "qclucene_global_p.h"

#include <QtCore/QString>

#include <QtCore/QStringList>

#include <QtCore/QSharedDataPointer>

#include <QtCore/QSharedData>

CL_NS_DEF(queryParser)

    class QueryParser;

CL_NS_END

CL_NS_USE(queryParser)

QT_BEGIN_NAMESPACE

class QCLuceneQuery;

class QCLuceneMultiFieldQueryParser;

class QHELP_EXPORT QCLuceneQueryParserPrivate : public QSharedData

{

public:

    QCLuceneQueryParserPrivate();

    QCLuceneQueryParserPrivate(const QCLuceneQueryParserPrivate &other);

    ~QCLuceneQueryParserPrivate();

    QueryParser *queryParser;

    bool deleteCLuceneQueryParser;

private:

    QCLuceneQueryParserPrivate &operator=(const QCLuceneQueryParserPrivate &other);

};

class QHELP_EXPORT QCLuceneQueryParser

{

public:

    QCLuceneQueryParser(const QString &field, QCLuceneAnalyzer &analyzer);

    virtual ~QCLuceneQueryParser();

    QCLuceneQuery* parse(const QString &query);

    QCLuceneQuery* parse(QCLuceneReader &reader);

    static QCLuceneQuery* parse(const QString &query, const QString &field, 

                                QCLuceneAnalyzer &analyzer);

    QCLuceneAnalyzer getAnalyzer();

    QString getField();

protected:

    friend class QCLuceneMultiFieldQueryParser;

    QSharedDataPointer<QCLuceneQueryParserPrivate> d;

private:

    QString field;

    QCLuceneAnalyzer analyzer;

};

class QHELP_EXPORT QCLuceneMultiFieldQueryParser : public QCLuceneQueryParser

{

public:

    enum FieldFlags {

        NORMAL_FIELD = 0,

        REQUIRED_FIELD = 1,

        PROHIBITED_FIELD = 2

    };

    QCLuceneMultiFieldQueryParser(const QStringList &fieldList, 

                                  QCLuceneAnalyzer &analyzer);

    ~QCLuceneMultiFieldQueryParser();

    static QCLuceneQuery *parse(const QString &query, const QStringList &fieldList,

                                QCLuceneAnalyzer &analyzer);

    static QCLuceneQuery *parse(const QString &query, const QStringList &fieldList,

                                QList<FieldFlags> flags, QCLuceneAnalyzer &analyzer);

};

QT_END_NAMESPACE

#endif  // QQUERYPARSER_P_H