CachedCollection (JBoss/Common API) - JBoss 4.0.1 sp1 common API Documentation 英文版文档

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org.jboss.util.collection
Class CachedCollection

java.lang.Object
  java.util.AbstractCollection
      org.jboss.util.collection.CachedCollection

All Implemented Interfaces:: Collection

public class CachedCollection
extends AbstractCollection

A wrapper around a Collection which translates added objects into SoftObject references, allowing the VM to garbage collect objects in the collection when memory is low.

Version:: $Revision: 1.3 $
Author:: Jason Dillon

Field Summary

protected Collection collection
          Wrapped collection

protected ReferenceQueue queue
          Reference queue

Constructor Summary

CachedCollection(Collection collection)
          Construct a CachedCollection.

Method Summary

boolean add(Object obj)
          Add an object to the collection.

Iterator iterator()
          Returns an iterator over the elements contained in this collection.

int size()
          Returns the size of the collection.

Methods inherited from class java.util.AbstractCollection

addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode

Field Detail

queue

protected final ReferenceQueue queue

Reference queue

collection

protected final Collection collection

Wrapped collection

Constructor Detail

CachedCollection

public CachedCollection(Collection collection)

Construct a CachedCollection.
Parameters:: collection - Collection to wrap.

Method Detail

iterator

public Iterator iterator()

Returns an iterator over the elements contained in this collection.

Returns:: An iterator over the elements contained in this collection.

size

public int size()

Returns the size of the collection.

Returns:: The number of elements in the collection.

add

public boolean add(Object obj)

Add an object to the collection.

Parameters:: obj - Object (or null to add to the collection.
Returns:: True if object was added.