001/**
002 *
003 * Copyright the original author or authors
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.pubsub;
018
019import org.jivesoftware.smack.packet.PacketExtension;
020import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
021
022/**
023 * Represents and item that has been deleted from a node.
024 * 
025 * @author Robin Collier
026 */
027public class RetractItem implements PacketExtension
028{
029        private String id;
030
031        /**
032         * Construct a <tt>RetractItem</tt> with the specified id.
033         * 
034         * @param itemId The id if the item deleted
035         */
036        public RetractItem(String itemId)
037        {
038                if (itemId == null)
039                        throw new IllegalArgumentException("itemId must not be 'null'");
040                id = itemId;
041        }
042        
043        public String getId()
044        {
045                return id;
046        }
047
048        public String getElementName()
049        {
050                return "retract";
051        }
052
053        public String getNamespace()
054        {
055                return PubSubNamespace.EVENT.getXmlns();
056        }
057
058        public String toXML()
059        {
060                return "<retract id='" + id + "'/>";
061        }
062}