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EventGenerators are able to generate events. Their natural collaborators are EventHandlers that can subscribe to them specifying a constraint to indicate which events interest them.
Method Summary | |
void |
subscribe(EventHandler handler,
EventConstraint constraint)
Subscribe an EventHandler with an EventConstraint. |
void |
unsubscribe(EventHandler handler)
Unsubscribe an EventHandler. |
Method Detail |
public void subscribe(EventHandler handler, EventConstraint constraint) throws DataManagerException
handler
- The EventHandler that will observe the events.constraint
- The constraint that identifies the events of interest
to the EventHandler.
DataManagerException
public void unsubscribe(EventHandler handler) throws DataManagerException
handler
- The EventHandler to unsubscribe.
DataManagerException
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