net.sf.molae.pipe.basic
Class UnextendableCollection<E>

java.lang.Object
  net.sf.molae.pipe.basic.ObjectProxy<B>
      net.sf.molae.pipe.basic.CollectionProxy<Collection<E>,E>
          net.sf.molae.pipe.basic.UnextendableCollection<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>

public final class UnextendableCollection<E>
extends CollectionProxy<Collection<E>,E>

A wrapper around collections that prohibits adding elements. Useful for map implementations.

Constructor Summary

UnextendableCollection(Collection<E> base)
Constructs an UnextendableCollection object.

Method Summary

boolean	add(E o) This implementation always throws an UnsupportedOperationException.
boolean	addAll(Collection<? extends E> c) This implementation always throws an UnsupportedOperationException.

Methods inherited from class net.sf.molae.pipe.basic.CollectionProxy

clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

Methods inherited from class net.sf.molae.pipe.basic.ObjectProxy

assertNotNull, equals, getBase, hashCode, toString, toVerboseString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode

Constructor Detail

UnextendableCollection

public UnextendableCollection(Collection<E> base)

Constructs an UnextendableCollection object.

Parameters:

base - the underlying (extendable) collection

Throws:

NullPointerException - if the specified object is null.

Method Detail

add

public boolean add(E o)

This implementation always throws an UnsupportedOperationException.

Specified by:

add in interface Collection<E>

Overrides:

add in class CollectionProxy<Collection<E>,E>

addAll

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

This implementation always throws an UnsupportedOperationException.

Specified by:

addAll in interface Collection<E>

Overrides:

addAll in class CollectionProxy<Collection<E>,E>