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.ExtensionElement;
020
021import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
022
023/**
024 * Represents and item that has been deleted from a node.
025 * 
026 * @author Robin Collier
027 */
028public class RetractItem implements ExtensionElement
029{
030    private final String id;
031
032    /**
033     * Construct a <tt>RetractItem</tt> with the specified id.
034     * 
035     * @param itemId The id if the item deleted
036     */
037    public RetractItem(String itemId)
038    {
039        if (itemId == null)
040            throw new IllegalArgumentException("itemId must not be 'null'");
041        id = itemId;
042    }
043
044    public String getId()
045    {
046        return id;
047    }
048
049    @Override
050    public String getElementName()
051    {
052        return "retract";
053    }
054
055    @Override
056    public String getNamespace()
057    {
058        return PubSubNamespace.EVENT.getXmlns();
059    }
060
061    @Override
062    public String toXML()
063    {
064        return "<retract id='" + id + "'/>";
065    }
066}