org.jruby.util
Class WeakIdentityHashMap
java.lang.Object
org.jruby.util.GenericMap
org.jruby.util.WeakIdentityHashMap
- All Implemented Interfaces:
- java.util.Map
public class WeakIdentityHashMap
- extends GenericMap
- implements java.util.Map
Class WeakIdentityHashMap
is a hash map that hashes
objects based on System.identityHashMap, and holds weakly onto the
key. This fails if values make reference to the keys!
- Since:
- 1.0
- Version:
- 2.0
- Author:
- Kresten Krab Thorup
Method Summary |
void |
clear()
|
boolean |
containsKey(java.lang.Object key)
return the element with the given key |
protected java.util.Iterator |
entryIterator()
|
java.lang.Object |
get(java.lang.Object key)
return the element with the given key |
boolean |
isEmpty()
|
protected boolean |
keyEquals(java.lang.Object key1,
java.lang.Object key2)
|
protected int |
keyHash(java.lang.Object key)
|
java.lang.Object |
put(java.lang.Object key,
java.lang.Object value)
|
java.lang.Object |
remove(int hash,
java.lang.Object key)
|
java.lang.Object |
remove(java.lang.Object key)
|
int |
size()
|
protected void |
valueRemoved(java.lang.Object value)
|
Methods inherited from class org.jruby.util.GenericMap |
containsValue, entrySet, equals, hashCode, keyIterator, keySet, putAll, valueEquals, valueHash, valueIterator, values |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.util.Map |
containsValue, entrySet, equals, hashCode, keySet, putAll, values |
WeakIdentityHashMap
public WeakIdentityHashMap()
- the default and only constructor
WeakIdentityHashMap
public WeakIdentityHashMap(int size)
clear
public void clear()
- Specified by:
clear
in interface java.util.Map
get
public java.lang.Object get(java.lang.Object key)
- return the element with the given key
- Specified by:
get
in interface java.util.Map
containsKey
public boolean containsKey(java.lang.Object key)
- return the element with the given key
- Specified by:
containsKey
in interface java.util.Map
- Overrides:
containsKey
in class GenericMap
put
public java.lang.Object put(java.lang.Object key,
java.lang.Object value)
- Specified by:
put
in interface java.util.Map
remove
public java.lang.Object remove(java.lang.Object key)
- Specified by:
remove
in interface java.util.Map
remove
public java.lang.Object remove(int hash,
java.lang.Object key)
valueRemoved
protected void valueRemoved(java.lang.Object value)
entryIterator
protected java.util.Iterator entryIterator()
- Specified by:
entryIterator
in class GenericMap
keyHash
protected final int keyHash(java.lang.Object key)
- Overrides:
keyHash
in class GenericMap
keyEquals
protected final boolean keyEquals(java.lang.Object key1,
java.lang.Object key2)
- Overrides:
keyEquals
in class GenericMap
size
public int size()
- Specified by:
size
in interface java.util.Map
- Overrides:
size
in class GenericMap
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interface java.util.Map
- Overrides:
isEmpty
in class GenericMap
Copyright © 2002-2009 JRuby Team. All Rights Reserved.