| /******************************************************************************* |
| * Copyright (c) 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.osgi.internal.serviceregistry; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| /** |
| * A Shrinkable Collection. This class provides a wrapper for a collection |
| * that allows items to be removed from the wrapped collection (shrinking) but |
| * does not allow items to be added to the wrapped collection. |
| * |
| * <p> |
| * All the optional <code>Collection</code> operations except |
| * <code>add</code> and <code>addAll</code> are supported. Attempting to add to the |
| * collection will result in an <code>UnsupportedOperationException</code>. |
| * |
| */ |
| |
| public class ShrinkableCollection implements Collection { |
| private final Collection collection; |
| |
| ShrinkableCollection(Collection c) { |
| if (c == null) { |
| throw new NullPointerException(); |
| } |
| collection = c; |
| } |
| |
| public boolean add(Object var0) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean addAll(Collection var0) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void clear() { |
| collection.clear(); |
| } |
| |
| public boolean contains(Object var0) { |
| return collection.contains(var0); |
| } |
| |
| public boolean containsAll(Collection var0) { |
| return collection.containsAll(var0); |
| } |
| |
| public boolean isEmpty() { |
| return collection.isEmpty(); |
| } |
| |
| public Iterator iterator() { |
| return collection.iterator(); |
| } |
| |
| public boolean remove(Object var0) { |
| return collection.remove(var0); |
| } |
| |
| public boolean removeAll(Collection var0) { |
| return collection.removeAll(var0); |
| } |
| |
| public boolean retainAll(Collection var0) { |
| return collection.retainAll(var0); |
| } |
| |
| public int size() { |
| return collection.size(); |
| } |
| |
| public Object[] toArray() { |
| return collection.toArray(); |
| } |
| |
| public Object[] toArray(Object[] var0) { |
| return collection.toArray(var0); |
| } |
| } |