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diff --git a/src/network/access/qnetworkdiskcache.h b/src/network/access/qnetworkdiskcache.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QNETWORKDISKCACHE_H
+#define QNETWORKDISKCACHE_H
+
+#include <QtNetwork/qabstractnetworkcache.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Network)
+
+#ifndef QT_NO_NETWORKDISKCACHE
+
+class QNetworkDiskCachePrivate;
+class Q_NETWORK_EXPORT QNetworkDiskCache : public QAbstractNetworkCache
+{
+    Q_OBJECT
+
+public:
+    explicit QNetworkDiskCache(QObject *parent = 0);
+    ~QNetworkDiskCache();
+
+    QString cacheDirectory() const;
+    void setCacheDirectory(const QString &cacheDir);
+
+    qint64 maximumCacheSize() const;
+    void setMaximumCacheSize(qint64 size);
+
+    qint64 cacheSize() const;
+    QNetworkCacheMetaData metaData(const QUrl &url);
+    void updateMetaData(const QNetworkCacheMetaData &metaData);
+    QIODevice *data(const QUrl &url);
+    bool remove(const QUrl &url);
+    QIODevice *prepare(const QNetworkCacheMetaData &metaData);
+    void insert(QIODevice *device);
+
+    QNetworkCacheMetaData fileMetaData(const QString &fileName) const;
+
+public Q_SLOTS:
+    void clear();
+
+protected:
+    virtual qint64 expire();
+
+private:
+    Q_DECLARE_PRIVATE(QNetworkDiskCache)
+    Q_DISABLE_COPY(QNetworkDiskCache)
+};
+
+#endif // QT_NO_NETWORKDISKCACHE
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QNETWORKDISKCACHE_H