org.glassfish.pfl.tf.timer.impl
Class VersionedHashSet<E>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet<E>
          java.util.HashSet<E>
              org.glassfish.pfl.tf.timer.impl.VersionedHashSet<E>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.Set<E>

public class VersionedHashSet<E>
extends java.util.HashSet<E>

This is an implementation of the Set interface that keeps track of its version so that we can tell when it is modified. Each time an element is added to or removed from the set, the version is incremented. This implementation is synchronized so that the version is consistently updated whenever the set is modified.

See Also:

Serialized Form

Constructor Summary

VersionedHashSet()

VersionedHashSet(java.util.Collection<? extends E> c)

VersionedHashSet(int initialCapacity)

VersionedHashSet(int initialCapacity, float loadFactor)

Method Summary

boolean	add(E e)
java.util.Iterator<E>	iterator()
boolean	remove(java.lang.Object o)
long	version()

Methods inherited from class java.util.HashSet

clear, clone, contains, isEmpty, size

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Constructor Detail

VersionedHashSet

public VersionedHashSet()

VersionedHashSet

public VersionedHashSet(java.util.Collection<? extends E> c)

VersionedHashSet

public VersionedHashSet(int initialCapacity,
                        float loadFactor)

VersionedHashSet

public VersionedHashSet(int initialCapacity)

Method Detail

version

public long version()

add

public boolean add(E e)

Specified by:

add in interface java.util.Collection<E>

Specified by:

add in interface java.util.Set<E>

Overrides:

add in class java.util.HashSet<E>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<E>

Specified by:

remove in interface java.util.Set<E>

Overrides:

remove in class java.util.HashSet<E>

iterator

public java.util.Iterator<E> iterator()

Specified by:

iterator in interface java.lang.Iterable<E>

Specified by:

iterator in interface java.util.Collection<E>

Specified by:

iterator in interface java.util.Set<E>

Overrides:

iterator in class java.util.HashSet<E>