org.apache.cxf.common.util
Class TwoStageMap<K,V>

java.lang.Object
  extended by org.apache.cxf.common.util.TwoStageMap<K,V>
Type Parameters:
K - key type
V - value type
All Implemented Interfaces:
java.util.Map<K,V>

public class TwoStageMap<K,V>
extends java.lang.Object
implements java.util.Map<K,V>

A Map backed by a limted capacity strong HashMap ("eden") containing the youngest entries, overflowing into an unlimted WeakMapHash ("aged") containing the older entries. Used to avoid caching schemes being frustrated by over-agressive GC.


Nested Class Summary
 
Nested classes/interfaces inherited from interface java.util.Map
java.util.Map.Entry<K,V>
 
Constructor Summary
TwoStageMap()
           
TwoStageMap(int c)
           
 
Method Summary
 void clear()
           
 boolean containsKey(java.lang.Object key)
           
 boolean containsValue(java.lang.Object value)
           
 java.util.Set<java.util.Map.Entry<K,V>> entrySet()
           
 V get(java.lang.Object key)
           
 boolean isEmpty()
           
 java.util.Set<K> keySet()
           
 V put(K key, V value)
           
 void putAll(java.util.Map<? extends K,? extends V> t)
           
 V remove(java.lang.Object key)
           
 int size()
           
 java.util.Collection<V> values()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Map
equals, hashCode
 

Constructor Detail

TwoStageMap

public TwoStageMap()

TwoStageMap

public TwoStageMap(int c)
Method Detail

size

public int size()
Specified by:
size in interface java.util.Map<K,V>

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface java.util.Map<K,V>

containsKey

public boolean containsKey(java.lang.Object key)
Specified by:
containsKey in interface java.util.Map<K,V>

containsValue

public boolean containsValue(java.lang.Object value)
Specified by:
containsValue in interface java.util.Map<K,V>

get

public V get(java.lang.Object key)
Specified by:
get in interface java.util.Map<K,V>

put

public V put(K key,
             V value)
Specified by:
put in interface java.util.Map<K,V>

remove

public V remove(java.lang.Object key)
Specified by:
remove in interface java.util.Map<K,V>

putAll

public void putAll(java.util.Map<? extends K,? extends V> t)
Specified by:
putAll in interface java.util.Map<K,V>

clear

public void clear()
Specified by:
clear in interface java.util.Map<K,V>

keySet

public java.util.Set<K> keySet()
Specified by:
keySet in interface java.util.Map<K,V>

values

public java.util.Collection<V> values()
Specified by:
values in interface java.util.Map<K,V>

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()
Specified by:
entrySet in interface java.util.Map<K,V>


Apache CXF