edu.ucla.sspace.util

Class SetDecorator<T>

java.lang.Object

edu.ucla.sspace.util.SetDecorator<T>

All Implemented Interfaces:

Serializable, Iterable<T>, Collection<T>, Set<T>

public class SetDecorator<T>
extends Object
implements Set<T>, Serializable

A wrapper around an existing Set implementation that allows subclasses to modify or extend the functionality of am existing Set instance by overriding some of its methods. For example, a subclass could enforce a size capacity on an existing set by overriding add and addAll to not add elements beyond a certain number.

Instances of this class support all the optional operations supported by their contained set. All methods calls are passed through to the original set.

Subclasses must override methods of this class to change existing functionality.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Set<T>	set

Constructor Summary

Constructors

Constructor and Description
SetDecorator(Set<T> set)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(T e)
boolean	addAll(Collection<? extends T> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
Iterator<T>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<E> E[]	toArray(E[] a)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

set

protected final Set<T> set

Constructor Detail

SetDecorator

public SetDecorator(Set<T> set)

Method Detail

add

public boolean add(T e)

Specified by:

add in interface Collection<T>

Specified by:

add in interface Set<T>

addAll

public boolean addAll(Collection<? extends T> c)

Specified by:

addAll in interface Collection<T>

Specified by:

addAll in interface Set<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface Set<T>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface Set<T>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<T>

Specified by:

containsAll in interface Set<T>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface Set<T>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface Set<T>

Overrides:

hashCode in class Object

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface Set<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Set<T>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface Set<T>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<T>

Specified by:

removeAll in interface Set<T>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<T>

Specified by:

retainAll in interface Set<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface Set<T>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

toArray

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

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

toString

public String toString()

Overrides:

toString in class Object