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diff --git a/src/assistant/lib/fulltextsearch/qsort_p.h b/src/assistant/lib/fulltextsearch/qsort_p.h
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+++ b/src/assistant/lib/fulltextsearch/qsort_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team.
+** All rights reserved.
+**
+** Portion Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** 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 QSORT_P_H
+#define QSORT_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 "qclucene_global_p.h"
+
+#include <QtCore/QString>
+#include <QtCore/QStringList>
+#include <QtCore/QSharedDataPointer>
+#include <QtCore/QSharedData>
+
+CL_NS_DEF(search)
+    class Sort;
+CL_NS_END
+CL_NS_USE(search)
+
+QT_BEGIN_NAMESPACE
+
+class QCLuceneHits;
+class QCLuceneField;
+
+class QHELP_EXPORT QCLuceneSortPrivate : public QSharedData
+{
+public:
+    QCLuceneSortPrivate();
+    QCLuceneSortPrivate (const QCLuceneSortPrivate &other);
+
+    ~QCLuceneSortPrivate();
+
+    Sort *sort;
+    bool deleteCLuceneSort;
+
+private:
+    QCLuceneSortPrivate &operator=(const QCLuceneSortPrivate &other);
+};
+
+class QHELP_EXPORT QCLuceneSort
+{
+public:
+    QCLuceneSort();
+    explicit QCLuceneSort(const QStringList &fieldNames);
+    explicit QCLuceneSort(const QString &field, bool reverse = false);
+
+    virtual ~QCLuceneSort();
+
+    QString toString() const;
+    void setSort(const QStringList &fieldNames);
+    void setSort(const QString &field, bool reverse = false);
+
+protected:
+    friend class QCLuceneHits;
+    QSharedDataPointer<QCLuceneSortPrivate> d;
+};
+
+QT_END_NAMESPACE
+
+#endif  // QSORT_P_H