org.apache.xbean.propertyeditor

Class ReferenceIdentityMap.ReferenceEntry

java.lang.Object

java.lang.ref.Reference<T>

java.lang.ref.WeakReference

org.apache.xbean.propertyeditor.ReferenceIdentityMap.ReferenceEntry

Enclosing class:

ReferenceIdentityMap

private static class ReferenceIdentityMap.ReferenceEntry
extends java.lang.ref.WeakReference

Each entry in the Map is represented with a ReferenceEntry.

If getKey() or getValue() returns null, it means the mapping is stale and should be removed.

Since:

Commons Collections 3.1

Field Summary

Fields

Modifier and Type	Field and Description
private int	hashCode The hash code of the key
private ReferenceIdentityMap.ReferenceEntry	next The next entry in the hash chain
private java.lang.Object	value The value

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ReferenceEntry(ReferenceIdentityMap parent, ReferenceIdentityMap.ReferenceEntry next, int hashCode, java.lang.Object key, java.lang.Object value) Creates a new entry object for the ReferenceMap.

Method Summary

Modifier and Type	Method and Description
private java.lang.Object	getKey() Gets the key from the entry.
private java.lang.Object	getValue() Gets the value from the entry.
private void	purged() Purges this entry.
private java.lang.Object	setValue(java.lang.Object obj) Sets the value of the entry.

Methods inherited from class java.lang.ref.Reference

clear, enqueue, get, isEnqueued

Methods inherited from class java.lang.Object

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

Field Detail

next

private ReferenceIdentityMap.ReferenceEntry next

The next entry in the hash chain

hashCode

private int hashCode

The hash code of the key

value

private java.lang.Object value

The value

Constructor Detail

ReferenceEntry

private ReferenceEntry(ReferenceIdentityMap parent,
                       ReferenceIdentityMap.ReferenceEntry next,
                       int hashCode,
                       java.lang.Object key,
                       java.lang.Object value)

Creates a new entry object for the ReferenceMap.

Parameters:

parent - the parent map

next - the next entry in the hash bucket

hashCode - the hash code of the key

key - the key

value - the value

Method Detail

getKey

private java.lang.Object getKey()

Gets the key from the entry. This method dereferences weak and soft keys and thus may return null.

Returns:

the key, which may be null if it was garbage collected

getValue

private java.lang.Object getValue()

Gets the value from the entry. This method dereferences weak and soft value and thus may return null.

Returns:

the value, which may be null if it was garbage collected

setValue

private java.lang.Object setValue(java.lang.Object obj)

Sets the value of the entry.

Parameters:

obj - the object to store

Returns:

the previous value

purged

private void purged()

Purges this entry.