Hi, In DataEngine it's often convenient to do something like this:
bool Engine::updateSourceEvent(const QString &name)
{
setData(name, ...);
}
bool Engine::sourceRequestEvent(const QString &name)
{
setData(name, DataEngine::Data()); // if async
updateSourceEvent(name);
return true;
}
sourceRequestEvent & updateSourceEvent are called like this:
- connectSource() interval = 0 -> sourceRequestEvent called
- query() -> sourceRequestEvent called
- connectSource() interval > 0 -> sourceRequestEvent & updateSourceEvent
called
That means that in my example updateSourceEvent is called twice at start when
using the last method. This is bad especially when doing some async calls in
updateSourceEvent. Of course there could be some extra code to prevent his,
but is the updateSourceEvent call at start needed?
Petri
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