Qt 4.8
qnetworkdiskcache.h
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41 
42 #ifndef QNETWORKDISKCACHE_H
43 #define QNETWORKDISKCACHE_H
44 
45 #include <QtNetwork/qabstractnetworkcache.h>
46 
48 
50 
51 QT_MODULE(Network)
52 
53 #ifndef QT_NO_NETWORKDISKCACHE
54 
57 {
58  Q_OBJECT
59 
60 public:
61  explicit QNetworkDiskCache(QObject *parent = 0);
63 
64  QString cacheDirectory() const;
65  void setCacheDirectory(const QString &cacheDir);
66 
67  qint64 maximumCacheSize() const;
68  void setMaximumCacheSize(qint64 size);
69 
70  qint64 cacheSize() const;
72  void updateMetaData(const QNetworkCacheMetaData &metaData);
73  QIODevice *data(const QUrl &url);
74  bool remove(const QUrl &url);
75  QIODevice *prepare(const QNetworkCacheMetaData &metaData);
76  void insert(QIODevice *device);
77 
78  QNetworkCacheMetaData fileMetaData(const QString &fileName) const;
79 
80 public Q_SLOTS:
81  void clear();
82 
83 protected:
84  virtual qint64 expire();
85 
86 private:
89 };
90 
91 #endif // QT_NO_NETWORKDISKCACHE
92 
94 
96 
97 #endif // QNETWORKDISKCACHE_H
virtual void updateMetaData(const QNetworkCacheMetaData &metaData)=0
Updates the cache meta date for the metaData&#39;s url to metaData.
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
The QNetworkDiskCache class provides a very basic disk cache.
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
#define Q_SLOTS
Definition: qobjectdefs.h:71
The QUrl class provides a convenient interface for working with URLs.
Definition: qurl.h:61
The QString class provides a Unicode character string.
Definition: qstring.h:83
virtual qint64 cacheSize() const =0
Returns the current size taken up by the cache.
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
virtual void clear()=0
Removes all items from the cache.
virtual void insert(QIODevice *device)=0
Inserts the data in device and the prepared meta data into the cache.
virtual QIODevice * data(const QUrl &url)=0
Returns the data associated with url.
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
__int64 qint64
Definition: qglobal.h:942
virtual QIODevice * prepare(const QNetworkCacheMetaData &metaData)=0
Returns the device that should be populated with the data for the cache item metaData.
#define Q_OBJECT
Definition: qobjectdefs.h:157
#define Q_NETWORK_EXPORT
Definition: qglobal.h:1452
virtual QNetworkCacheMetaData metaData(const QUrl &url)=0
Returns the meta data for the url url.
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
The QIODevice class is the base interface class of all I/O devices in Qt.
Definition: qiodevice.h:66
#define QT_END_HEADER
Definition: qglobal.h:137
static QString fileName(const QString &fileUrl)
The QNetworkCacheMetaData class provides cache information.
The QAbstractNetworkCache class provides the interface for cache implementations. ...