com.bea.wli.config.spi

Interface GarbageCollectionHandler<V,C>

public interface GarbageCollectionHandler<V,C>

Garbage collection handlers are notified some time after a derived value has been garbage collected. This handler can be used to cleanup auxiliary data structures (such as files) that were associated with the garbage collected value but are no longer needed.

Method Summary

Modifier and Type	Method and Description
void	afterCollection(Ref ref, C callbackObject) Called some time after a derived value is found to have been garbage collected.
C	getCallbackObject(Ref ref, V derivedValue) Returns a callback object that will be used when this handler is notified of a garbage collected derived value via the afterCollection(com.bea.wli.config.Ref, C) method.

Method Detail

getCallbackObject

C getCallbackObject(Ref ref,
                    V derivedValue)

Returns a callback object that will be used when this handler is notified of a garbage collected derived value via the afterCollection(com.bea.wli.config.Ref, C) method. The implementations should store information that is necessary to perform any cleanup or other processing. Implementations, however, should not store any reference to the derived value in the callback object

Parameters:

ref - the reference to the derived value

derivedValue - the derived value

Returns:

a callback object that will be passed to the afterCollection(com.bea.wli.config.Ref, C) method

afterCollection

void afterCollection(Ref ref,
                     C callbackObject)

Called some time after a derived value is found to have been garbage collected.

Parameters:

ref - the reference to the derived value that has been garbage collected

callbackObject - the callback object that was returned from the getCallbackObject(com.bea.wli.config.Ref, V) method corresponding the derived value