org.eclipse.ocl.examples.eventmanager.util
Class SingleSetAsBag<E>

java.lang.Object
  org.eclipse.ocl.examples.eventmanager.util.SingleSetAsBag<E>

All Implemented Interfaces:

java.lang.Iterable<E>, java.util.Collection<E>, Bag<E>

public class SingleSetAsBag<E>
extends java.lang.Object
implements Bag<E>

Wraps a single Set as a Bag. If the set's Collection.contains(Object) operation is fast then so will be this bag's contains(Object) operation. According to the specification of Bag, all modifying operations throw an UnsupportedOperationException.

The underlying Set, however, can be obtained using getWrappedSet() and modified. As the iterator() on this bag is obtained from the underlying set, modifications to the set while iterating over this bag will cause a ConcurrentModificationException.

Author:

Axel Uhl

Constructor Summary

SingleSetAsBag(java.util.Set<E> set)

Method Summary

boolean	add(E o)
boolean	addAll(java.util.Collection<? extends E> c)
void	clear()
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection<?> c)
int	count(java.lang.Object o) Queries how many times the specified object occurs in me.
java.util.Set<E>	getWrappedSet()
boolean	isEmpty()
java.util.Iterator<E>	iterator()
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection<?> c)
boolean	retainAll(java.util.Collection<?> c)
int	size()
java.lang.Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode

Constructor Detail

SingleSetAsBag

public SingleSetAsBag(java.util.Set<E> set)

Parameters:

set - must not be null, or else, a NullPointerException will be thrown.

Method Detail

getWrappedSet

public java.util.Set<E> getWrappedSet()

size

public int size()

Specified by:

size in interface java.util.Collection<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<E>

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection<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>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface java.util.Collection<E>

add

public boolean add(E o)

Specified by:

add in interface java.util.Collection<E>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<E>

containsAll

public boolean containsAll(java.util.Collection<?> c)

Specified by:

containsAll in interface java.util.Collection<E>

addAll

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

Specified by:

addAll in interface java.util.Collection<E>

removeAll

public boolean removeAll(java.util.Collection<?> c)

Specified by:

removeAll in interface java.util.Collection<E>

retainAll

public boolean retainAll(java.util.Collection<?> c)

Specified by:

retainAll in interface java.util.Collection<E>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<E>

count

public int count(java.lang.Object o)

Description copied from interface: Bag

Queries how many times the specified object occurs in me. If I do not contain the object, then the count is zero.

Specified by:

count in interface Bag<E>

Parameters:

o - an object

Returns:

the number of times that it occurs in me