com.goldencode.p2j.util

Class DeferredDeletablesManager

java.lang.Object

com.goldencode.p2j.util.DeferredDeletablesManager

All Implemented Interfaces:

Finalizable

public class DeferredDeletablesManager
extends java.lang.Object
implements Finalizable

Provides a mean of postponing deletion of deletable resources at a specific block level. This is useful where there are postpone deletes which can't be determined at the target place of deletion.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Set<DeferredDeletable>	deletables The core collection of resources which are to be deleted when the manager is finished

Constructor Summary

Constructors

Constructor and Description
DeferredDeletablesManager()

Method Summary

Modifier and Type	Method and Description
void	deleted() The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.
void	finished() Does the effective delete of the registered resources when this manager is finished.
void	iterate() The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.
boolean	register(DeferredDeletable deletable) Registers a specific deletable to this manager.
static boolean	registerAt(int blockDepth, DeferredDeletable resource) Registers a resource at a specific block depth.
void	retry() The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.goldencode.p2j.util.Finalizable

entry, initFailure, weight

Field Detail

deletables

private final java.util.Set<DeferredDeletable> deletables

The core collection of resources which are to be deleted when the manager is finished

Constructor Detail

DeferredDeletablesManager

public DeferredDeletablesManager()

Method Detail

registerAt

public static boolean registerAt(int blockDepth,
                                 DeferredDeletable resource)

Registers a resource at a specific block depth. This also handles the scenario in which there is already such manager registered at that block.

Parameters:

blockDepth - The index of the outermost block at which a manager should be registered; blockDepth 0 means the global scope.

resource - The resource which is to be registered.

Returns:

false if the registration was skipped as this resource was already registered, true otherwise.

register

public boolean register(DeferredDeletable deletable)

Registers a specific deletable to this manager. While the collection is a set, the deletable won't be deleted twice.

Parameters:

deletable - A resource meant to be registered for deletion.

Returns:

true if the register was successful or false if the deletable was already registered in this manager.

finished

public void finished()

Does the effective delete of the registered resources when this manager is finished.

Specified by:

finished in interface Finalizable

deleted

public void deleted()

The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.

Specified by:

deleted in interface Finalizable

iterate

public void iterate()

The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.

Specified by:

iterate in interface Finalizable

retry

public void retry()

The method is a no-op due to the fact that the delete defer is made only when the the manager is notified through the finished method.

Specified by:

retry in interface Finalizable