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diff --git a/src/network/access/qabstractnetworkcache.h b/src/network/access/qabstractnetworkcache.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTNETWORKCACHE_H
+#define QABSTRACTNETWORKCACHE_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qshareddata.h>
+#include <QtCore/qpair.h>
+#include <QtNetwork/qnetworkrequest.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Network)
+
+class QIODevice;
+class QDateTime;
+class QUrl;
+template<class T> class QList;
+
+class QNetworkCacheMetaDataPrivate;
+class Q_NETWORK_EXPORT QNetworkCacheMetaData
+{
+
+public:
+    typedef QPair<QByteArray, QByteArray> RawHeader;
+    typedef QList<RawHeader> RawHeaderList;
+    typedef QHash<QNetworkRequest::Attribute, QVariant> AttributesMap;
+
+    QNetworkCacheMetaData();
+    QNetworkCacheMetaData(const QNetworkCacheMetaData &other);
+    ~QNetworkCacheMetaData();
+
+    QNetworkCacheMetaData &operator=(const QNetworkCacheMetaData &other);
+    bool operator==(const QNetworkCacheMetaData &other) const;
+    inline bool operator!=(const QNetworkCacheMetaData &other) const
+        { return !(*this == other); }
+
+    bool isValid() const;
+
+    QUrl url() const;
+    void setUrl(const QUrl &url);
+
+    RawHeaderList rawHeaders() const;
+    void setRawHeaders(const RawHeaderList &headers);
+
+    QDateTime lastModified() const;
+    void setLastModified(const QDateTime &dateTime);
+
+    QDateTime expirationDate() const;
+    void setExpirationDate(const QDateTime &dateTime);
+
+    bool saveToDisk() const;
+    void setSaveToDisk(bool allow);
+
+    AttributesMap attributes() const;
+    void setAttributes(const AttributesMap &attributes);
+
+private:
+    friend class QNetworkCacheMetaDataPrivate;
+    QSharedDataPointer<QNetworkCacheMetaDataPrivate> d;
+};
+
+Q_NETWORK_EXPORT QDataStream &operator<<(QDataStream &, const QNetworkCacheMetaData &);
+Q_NETWORK_EXPORT QDataStream &operator>>(QDataStream &, QNetworkCacheMetaData &);
+
+
+class QAbstractNetworkCachePrivate;
+class Q_NETWORK_EXPORT QAbstractNetworkCache : public QObject
+{
+    Q_OBJECT
+
+public:
+    virtual ~QAbstractNetworkCache();
+
+    virtual QNetworkCacheMetaData metaData(const QUrl &url) = 0;
+    virtual void updateMetaData(const QNetworkCacheMetaData &metaData) = 0;
+    virtual QIODevice *data(const QUrl &url) = 0;
+    virtual bool remove(const QUrl &url) = 0;
+    virtual qint64 cacheSize() const = 0;
+
+    virtual QIODevice *prepare(const QNetworkCacheMetaData &metaData) = 0;
+    virtual void insert(QIODevice *device) = 0;
+
+public Q_SLOTS:
+    virtual void clear() = 0;
+
+protected:
+    explicit QAbstractNetworkCache(QObject *parent = 0);
+    QAbstractNetworkCache(QAbstractNetworkCachePrivate &dd, QObject *parent);
+
+private:
+    Q_DECLARE_PRIVATE(QAbstractNetworkCache)
+    Q_DISABLE_COPY(QAbstractNetworkCache)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif