| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.portal.pluto.om.common; |
| |
| import java.io.Serializable; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| /** |
| * |
| * |
| * @author <a href="mailto:cziegeler@apache.org">Carsten Ziegeler</a> |
| * |
| * @version CVS $Id$ |
| */ |
| public class UnmodifiableSet implements Set, Serializable { |
| |
| // use serialVersionUID from JDK 1.2.2 for interoperability |
| private static final long serialVersionUID = 1820017752578914078L; |
| |
| protected Set c; |
| |
| public UnmodifiableSet(Set c) { |
| if (c == null) { |
| throw new NullPointerException(); |
| } |
| this.c = c; |
| } |
| |
| public int size() { |
| return c.size(); |
| } |
| |
| public boolean isEmpty() { |
| return c.isEmpty(); |
| } |
| |
| public boolean contains(Object o) { |
| return c.contains(o); |
| } |
| |
| public Object[] toArray() { |
| return c.toArray(); |
| } |
| |
| public Object[] toArray(Object[] a) { |
| return c.toArray(a); |
| } |
| |
| public String toString() { |
| return c.toString(); |
| } |
| |
| public Iterator iterator() { |
| return new Iterator() { |
| Iterator i = c.iterator(); |
| |
| public boolean hasNext() { |
| return i.hasNext(); |
| } |
| |
| public Object next() { |
| return i.next(); |
| } |
| |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| } |
| |
| public boolean add(Object o) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean remove(Object o) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean containsAll(Collection coll) { |
| return c.containsAll(coll); |
| } |
| |
| public boolean addAll(Collection coll) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean removeAll(Collection coll) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean retainAll(Collection coll) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void clear() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public boolean equals(Object o) { |
| return c.equals(o); |
| } |
| |
| public int hashCode() { |
| return c.hashCode(); |
| } |
| |
| // additional methods. |
| |
| /** |
| * This method is only used by the ControllerFactoryImpl |
| * to unwrap the unmodifiable Set and allow to |
| * modify the set via controllers |
| * |
| * @return the modifiable set |
| */ |
| public Set getModifiableSet() { |
| return c; |
| } |
| } |