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# qabstractnetworkcache.h

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    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtNetwork module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QABSTRACTNETWORKCACHE_H
    00043 #define QABSTRACTNETWORKCACHE_H
    00044
    00045 #include <QtCore/qobject.h>
    00046 #include <QtCore/qshareddata.h>
    00047 #include <QtCore/qpair.h>
    00048 #include <QtNetwork/qnetworkrequest.h>
    00049
    00050 QT_BEGIN_HEADER
    00051
    00052 QT_BEGIN_NAMESPACE
    00053
    00054 QT_MODULE(Network)
    00055
    00056 class QIODevice;
    00057 class QDateTime;
    00058 class QUrl;
    00059 template<class T> class QList;
    00060
    00061 class QNetworkCacheMetaDataPrivate;
    00062 class Q_NETWORK_EXPORT QNetworkCacheMetaData
    00063 {
    00064
    00065 public:
    00066     typedef QPair<QByteArray, QByteArray> RawHeader;
    00067     typedef QList<RawHeader> RawHeaderList;
    00068     typedef QHash<QNetworkRequest::Attribute, QVariant> AttributesMap;
    00069
    00070     QNetworkCacheMetaData();
    00071     QNetworkCacheMetaData(const QNetworkCacheMetaData &other);
    00072     ~QNetworkCacheMetaData();
    00073
    00074     QNetworkCacheMetaData &operator=(const QNetworkCacheMetaData &other);
    00075     bool operator==(const QNetworkCacheMetaData &other) const;
    00076     inline bool operator!=(const QNetworkCacheMetaData &other) const
    00077         { return !(*this == other); }
    00078
    00079     bool isValid() const;
    00080
    00081     QUrl url() const;
    00082     void setUrl(const QUrl &url);
    00083
    00084     RawHeaderList rawHeaders() const;
    00085     void setRawHeaders(const RawHeaderList &headers);
    00086
    00087     QDateTime lastModified() const;
    00088     void setLastModified(const QDateTime &dateTime);
    00089
    00090     QDateTime expirationDate() const;
    00091     void setExpirationDate(const QDateTime &dateTime);
    00092
    00093     bool saveToDisk() const;
    00094     void setSaveToDisk(bool allow);
    00095
    00096     AttributesMap attributes() const;
    00097     void setAttributes(const AttributesMap &attributes);
    00098
    00099 private:
    00100     friend class QNetworkCacheMetaDataPrivate;
    00101     QSharedDataPointer<QNetworkCacheMetaDataPrivate> d;
    00102 };
    00103
    00104 Q_NETWORK_EXPORT QDataStream &operator<<(QDataStream &, const QNetworkCacheMetaData &);
    00105 Q_NETWORK_EXPORT QDataStream &operator>>(QDataStream &, QNetworkCacheMetaData &);
    00106
    00107
    00108 class QAbstractNetworkCachePrivate;
    00109 class Q_NETWORK_EXPORT QAbstractNetworkCache : public QObject
    00110 {
    00111     Q_OBJECT
    00112
    00113 public:
    00114     virtual ~QAbstractNetworkCache();
    00115
    00116     virtual QNetworkCacheMetaData metaData(const QUrl &url) = 0;
    00117     virtual void updateMetaData(const QNetworkCacheMetaData &metaData) = 0;
    00118     virtual QIODevice *data(const QUrl &url) = 0;
    00119     virtual bool remove(const QUrl &url) = 0;
    00120     virtual qint64 cacheSize() const = 0;
    00121
    00122     virtual QIODevice *prepare(const QNetworkCacheMetaData &metaData) = 0;
    00123     virtual void insert(QIODevice *device) = 0;
    00124
    00125 public Q_SLOTS:
    00126     virtual void clear() = 0;
    00127
    00128 protected:
    00129     explicit QAbstractNetworkCache(QObject *parent = 0);
    00130     QAbstractNetworkCache(QAbstractNetworkCachePrivate &dd, QObject *parent);
    00131
    00132 private:
    00133     Q_DECLARE_PRIVATE(QAbstractNetworkCache)
    00134     Q_DISABLE_COPY(QAbstractNetworkCache)
    00135 };
    00136
    00137 QT_END_NAMESPACE
    00138
    00139 QT_END_HEADER
    00140
    00141 #endif