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    private final 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        if (itemId == null)
038            throw new IllegalArgumentException("itemId must not be 'null'");
039        id = itemId;
040    }
041
042    public String getId() {
043        return id;
044    }
045
046    @Override
047    public String getElementName() {
048        return "retract";
049    }
050
051    @Override
052    public String getNamespace() {
053        return PubSubNamespace.event.getXmlns();
054    }
055
056    @Override
057    public String toXML(String enclosingNamespace) {
058        return "<retract id='" + id + "'/>";
059    }
060}