Caches multiple signals into one to avoid slowdown when adding or removing many statements.
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| SignalCacheModel (Model *parent=0) |
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virtual | ~SignalCacheModel () |
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int | cacheTime () const |
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virtual | ~FilterModel () |
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virtual void | setParentModel (Model *model) |
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virtual Model * | parentModel () const |
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virtual Error::ErrorCode | addStatement (const Statement &statement) |
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Error::ErrorCode | addStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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virtual Error::ErrorCode | removeStatement (const Statement &statement) |
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Error::ErrorCode | removeStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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virtual Error::ErrorCode | removeAllStatements (const Statement &statement) |
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Error::ErrorCode | removeAllStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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virtual StatementIterator | listStatements (const Statement &partial) const |
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StatementIterator | listStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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virtual NodeIterator | listContexts () const |
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virtual QueryResultIterator | executeQuery (const QString &query, Query::QueryLanguage language, const QString &userQueryLanguage=QString()) const |
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virtual bool | containsStatement (const Statement &statement) const |
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bool | containsStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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virtual bool | containsAnyStatement (const Statement &statement) const |
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bool | containsAnyStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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virtual bool | isEmpty () const |
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virtual int | statementCount () const |
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virtual Error::ErrorCode | write (QTextStream &os) const |
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virtual Node | createBlankNode () |
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virtual | ~Model () |
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Error::ErrorCode | addStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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Error::ErrorCode | addStatements (const QList< Statement > &statements) |
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Error::ErrorCode | removeStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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Error::ErrorCode | removeAllStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) |
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Error::ErrorCode | removeStatements (const QList< Statement > &statements) |
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Error::ErrorCode | removeContext (const Node &) |
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Error::ErrorCode | removeAllStatements () |
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StatementIterator | listStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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StatementIterator | listStatements () const |
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StatementIterator | listStatementsInContext (const Node &context) const |
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bool | containsAnyStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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bool | containsStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const |
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bool | containsContext (const Node &context) const |
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| QObject (QObject *parent=0) |
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| blockSignals (bool block) |
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| childEvent (QChildEvent *event) |
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| children () |
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| connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type=Qt::AutoCompatConnection) |
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| connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type=Qt::AutoCompatConnection) |
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| connectNotify (const char *signal) |
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| customEvent (QEvent *event) |
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| deleteLater () |
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| destroyed (QObject *obj=0) |
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| disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method) |
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| disconnect (const char *signal=0, const QObject *receiver=0, const char *method=0) |
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| disconnect (const QObject *receiver, const char *method=0) |
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| disconnectNotify (const char *signal) |
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| dumpObjectInfo () |
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| dumpObjectTree () |
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| dynamicPropertyNames () |
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| event (QEvent *e) |
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| eventFilter (QObject *watched, QEvent *event) |
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| findChild (const QString &name=QString() |
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| findChildren (const QString &name=QString() |
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| findChildren (const QRegExp ®Exp) |
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| inherits (const char *className) |
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| installEventFilter (QObject *filterObj) |
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| isWidgetType () |
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| killTimer (int id) |
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| metaObject () |
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| moveToThread (QThread *targetThread) |
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| parent () |
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| property (const char *name) |
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| receivers (const char *signal) |
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| removeEventFilter (QObject *obj) |
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| sender () |
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| setParent (QObject *parent) |
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| setProperty (const char *name, const QVariant &value) |
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| signalsBlocked () |
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| startTimer (int interval) |
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| thread () |
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| timerEvent (QTimerEvent *event) |
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| tr (const char *sourceText, const char *comment=0, int n=-1) |
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| trUtf8 (const char *sourceText, const char *comment=0, int n=-1) |
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| staticMetaObject |
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| QObject (QObject *parent, const char *name) |
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| checkConnectArgs (const char *signal, const QObject *object, const char *method) |
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| child (const char *objName, const char *inheritsClass=0, bool recursiveSearch=true) |
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| className () |
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| insertChild (QObject *object) |
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| isA (const char *className) |
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| name () |
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| name (const char *defaultName) |
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| normalizeSignalSlot (const char *signalSlot) |
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| removeChild (QObject *object) |
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| setName (const char *name) |
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virtual | ~ErrorCache () |
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virtual Error | lastError () const |
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Caches multiple signals into one to avoid slowdown when adding or removing many statements.
When adding or removing many statements with separate calls to Model::addStatement or Model::removeStatement Model emits signals Model::statementsAdded and Model::statementsRemoved over and over for each call. This can slow down an application that monitors the state of the model.
The SignalCacheModel caches multiple emitted signals into one, trying to ensure that only one signal is delivered in a certain time. The downside of this is that signals are not delivered immiadetely but through the event loop. This, however, should seldomly be a problem.
- Author
- Sebastian Trueg trueg.nosp@m.@kde.nosp@m..org
- Since
- 2.1
Definition at line 52 of file signalcachemodel.h.