| /****************************************************************************** |
| * Copyright (c) 2005 BEA Systems, Inc. |
| * 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: |
| * Konstantin Komissarchik - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.wst.common.project.facet.core.internal; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * @author <a href="mailto:kosta@bea.com">Konstantin Komissarchik</a> |
| */ |
| |
| public final class IndexedSet |
| |
| extends HashSet |
| |
| { |
| private static final long serialVersionUID = 1L; |
| private final Set unmodifiable = Collections.unmodifiableSet( this ); |
| private final HashMap index = new HashMap(); |
| |
| public void add( final Object key, |
| final Object value ) |
| { |
| add( value ); |
| this.index.put( key, value ); |
| } |
| |
| public boolean delete( final Object key ) |
| { |
| final Object value = this.index.get( key ); |
| |
| if( value == null ) |
| { |
| return false; |
| } |
| else |
| { |
| remove( value ); |
| this.index.remove( key ); |
| return true; |
| } |
| } |
| |
| public Object get( final Object key ) |
| { |
| return this.index.get( key ); |
| } |
| |
| public boolean containsKey( final Object key ) |
| { |
| return this.index.containsKey( key ); |
| } |
| |
| public Set getUnmodifiable() |
| { |
| return this.unmodifiable; |
| } |
| } |