org.apache.openjpa.lib.util.concurrent
Class ConcurrentReferenceHashSet

java.lang.Object
  extended by org.apache.openjpa.lib.util.concurrent.ConcurrentReferenceHashSet
All Implemented Interfaces:
java.io.Serializable, java.lang.Iterable, java.util.Collection, java.util.Set

public class ConcurrentReferenceHashSet
extends java.lang.Object
implements java.util.Set, java.io.Serializable

A concurrent set whose values may be stored as weak or soft references.

Author:
Abe White
See Also:
Serialized Form

Field Summary
static int HARD
          Hard reference marker.
static int SOFT
          Soft reference marker.
static int WEAK
          Weak reference marker.
 
Constructor Summary
ConcurrentReferenceHashSet(int refType)
          Construct a set with the given reference type.
 
Method Summary
 boolean add(java.lang.Object obj)
           
 boolean addAll(java.util.Collection coll)
           
 void clear()
           
 boolean contains(java.lang.Object obj)
           
 boolean containsAll(java.util.Collection coll)
           
 boolean equals(java.lang.Object obj)
           
 int hashCode()
           
 boolean isEmpty()
           
 java.util.Iterator iterator()
           
 boolean remove(java.lang.Object obj)
           
 boolean removeAll(java.util.Collection coll)
           
 boolean retainAll(java.util.Collection coll)
           
 int size()
           
 java.lang.Object[] toArray()
           
 java.lang.Object[] toArray(java.lang.Object[] arr)
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

HARD

public static final int HARD
Hard reference marker.

See Also:
Constant Field Values

SOFT

public static final int SOFT
Soft reference marker.

See Also:
Constant Field Values

WEAK

public static final int WEAK
Weak reference marker.

See Also:
Constant Field Values
Constructor Detail

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(int refType)
Construct a set with the given reference type.

Method Detail

add

public boolean add(java.lang.Object obj)
Specified by:
add in interface java.util.Collection
Specified by:
add in interface java.util.Set

addAll

public boolean addAll(java.util.Collection coll)
Specified by:
addAll in interface java.util.Collection
Specified by:
addAll in interface java.util.Set

clear

public void clear()
Specified by:
clear in interface java.util.Collection
Specified by:
clear in interface java.util.Set

contains

public boolean contains(java.lang.Object obj)
Specified by:
contains in interface java.util.Collection
Specified by:
contains in interface java.util.Set

containsAll

public boolean containsAll(java.util.Collection coll)
Specified by:
containsAll in interface java.util.Collection
Specified by:
containsAll in interface java.util.Set

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface java.util.Collection
Specified by:
isEmpty in interface java.util.Set

iterator

public java.util.Iterator iterator()
Specified by:
iterator in interface java.lang.Iterable
Specified by:
iterator in interface java.util.Collection
Specified by:
iterator in interface java.util.Set

remove

public boolean remove(java.lang.Object obj)
Specified by:
remove in interface java.util.Collection
Specified by:
remove in interface java.util.Set

removeAll

public boolean removeAll(java.util.Collection coll)
Specified by:
removeAll in interface java.util.Collection
Specified by:
removeAll in interface java.util.Set

retainAll

public boolean retainAll(java.util.Collection coll)
Specified by:
retainAll in interface java.util.Collection
Specified by:
retainAll in interface java.util.Set

size

public int size()
Specified by:
size in interface java.util.Collection
Specified by:
size in interface java.util.Set

toArray

public java.lang.Object[] toArray()
Specified by:
toArray in interface java.util.Collection
Specified by:
toArray in interface java.util.Set

toArray

public java.lang.Object[] toArray(java.lang.Object[] arr)
Specified by:
toArray in interface java.util.Collection
Specified by:
toArray in interface java.util.Set

hashCode

public int hashCode()
Specified by:
hashCode in interface java.util.Collection
Specified by:
hashCode in interface java.util.Set
Overrides:
hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)
Specified by:
equals in interface java.util.Collection
Specified by:
equals in interface java.util.Set
Overrides:
equals in class java.lang.Object