org.eclipse.incquery.runtime.evm.notification

Interface IActivationNotificationProvider

All Known Implementing Classes:

ActivationNotificationProvider, RuleInstance

public interface IActivationNotificationProvider

This interface is used for providing an internal activation notification mechanism. Listeners added to the implemented provider should be notified when an activation change occurs.

Author:

Abel Hegedus

Method Summary

Modifier and Type	Method and Description
boolean	addActivationNotificationListener(IActivationNotificationListener listener, boolean fireNow) Registers an IActivationNotificationListener to receive updates on activation appearance and disappearance.
boolean	removeActivationNotificationListener(IActivationNotificationListener listener) Unregisters a listener registered by addActivationNotificationListener(IActivationNotificationListener, boolean).

Method Detail

addActivationNotificationListener

boolean addActivationNotificationListener(IActivationNotificationListener listener,
                                          boolean fireNow)

Registers an IActivationNotificationListener to receive updates on activation appearance and disappearance.

The listener can be unregistered via removeActivationNotificationListener(IActivationNotificationListener).

Parameters:

fireNow - if true, listener will be immediately invoked on all current activations as a one-time effect.

listener - the listener that will be notified of each new activation that appears or disappears, starting from now.

removeActivationNotificationListener

boolean removeActivationNotificationListener(IActivationNotificationListener listener)

Unregisters a listener registered by addActivationNotificationListener(IActivationNotificationListener, boolean).

Parameters:

listener - the listener that will no longer be notified.