org.opendaylight.mdsal.dom.api

Interface DOMActionAvailabilityExtension.AvailabilityListener

All Superinterfaces:

EventListener

Enclosing interface:

DOMActionAvailabilityExtension

public static interface DOMActionAvailabilityExtension.AvailabilityListener
extends EventListener

An EventListener used to track Operation implementations becoming (un)available to a DOMActionService.

Method Summary

Modifier and Type	Method and Description
default boolean	acceptsImplementation(DOMActionImplementation impl) Implementation filtering method.
void	onActionsChanged(Set<DOMActionInstance> removed, Set<DOMActionInstance> added) Method invoked whenever an action type becomes available or unavailable.

Method Detail

onActionsChanged

void onActionsChanged(Set<DOMActionInstance> removed,
                      Set<DOMActionInstance> added)

Method invoked whenever an action type becomes available or unavailable. There are two sets reported, removed and added. To reconstruct the state, first apply removed and then added operations, like this: Set<DOMActionInstancelt;?>> operations; operations.removeAll(removed); operations.addAll(added);

Parameters:

removed - operations which disappeared

added - operations which became available

acceptsImplementation

default boolean acceptsImplementation(DOMActionImplementation impl)

Implementation filtering method. This method is useful for forwarding operation implementations, which need to ensure they do not re-announce their own implementations. Without this method a forwarder which registers an implementation would be notified of its own implementation, potentially re-exporting it as local -- hence creating a forwarding loop.

Parameters:

impl - Operation implementation being registered

Returns:

False if the implementation should not be reported, defaults to true.