KDE 4.2 API Reference soprano
Soprano::Util::SignalCacheModel Class Reference
#include <Soprano/Util/SignalCacheModel>
Inheritance diagram for Soprano::Util::SignalCacheModel:
Detailed Description
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.
- Since:
- 2.1
Definition at line 52 of file signalcachemodel.h.
Public Slots | |
| void | setCacheTime (int msec) |
Public Member Functions | |
| int | cacheTime () const |
| SignalCacheModel (Model *parent=0) | |
| virtual | ~SignalCacheModel () |
Protected Member Functions | |
| virtual void | parentStatementsAdded () |
| virtual void | parentStatementsRemoved () |
| void | timerEvent (QTimerEvent *event) |
Constructor & Destructor Documentation
| Soprano::Util::SignalCacheModel::SignalCacheModel | ( | Model * | parent = 0 |
) |
| virtual Soprano::Util::SignalCacheModel::~SignalCacheModel | ( | ) | [virtual] |
Destructor.
Member Function Documentation
| int Soprano::Util::SignalCacheModel::cacheTime | ( | ) | const |
| virtual void Soprano::Util::SignalCacheModel::parentStatementsAdded | ( | ) | [protected, virtual] |
| virtual void Soprano::Util::SignalCacheModel::parentStatementsRemoved | ( | ) | [protected, virtual] |
| void Soprano::Util::SignalCacheModel::setCacheTime | ( | int | msec | ) | [slot] |
Signals are only delivered once every msec milliseconds.
Default value is 50
| void Soprano::Util::SignalCacheModel::timerEvent | ( | QTimerEvent * | event | ) | [protected] |
Reimplemented from QObject.
The documentation for this class was generated from the following file:
