1d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 2d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $RCSfile$ 3d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Revision: 7071 $ 4d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Date: 2007-02-12 08:59:05 +0800 (Mon, 12 Feb 2007) $ 5d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 6d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Copyright 2003-2007 Jive Software. 7d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 8d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * you may not use this file except in compliance with the License. 10d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * You may obtain a copy of the License at 11d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 12d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * http://www.apache.org/licenses/LICENSE-2.0 13d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 14d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Unless required by applicable law or agreed to in writing, software 15d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * distributed under the License is distributed on an "AS IS" BASIS, 16d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * See the License for the specific language governing permissions and 18d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * limitations under the License. 19d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 20d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 21d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpackage org.jivesoftware.smackx.packet; 22d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 23d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.packet.IQ; 24d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.util.StringUtils; 25d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 26d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.Collection; 27d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.Collections; 28d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.Iterator; 29d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.List; 30d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.concurrent.CopyOnWriteArrayList; 31d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 32d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 33d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * A DiscoverItems IQ packet, which is used by XMPP clients to request and receive items 34d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * associated with XMPP entities.<p> 35d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 36d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * The items could also be queried in order to discover if they contain items inside. Some items 37d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * may be addressable by its JID and others may require to be addressed by a JID and a node name. 38d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 39d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @author Gaston Dombiak 40d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 41d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpublic class DiscoverItems extends IQ { 42d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 43d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public static final String NAMESPACE = "http://jabber.org/protocol/disco#items"; 44d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 45d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private final List<Item> items = new CopyOnWriteArrayList<Item>(); 46d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private String node; 47d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 48d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 49d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Adds a new item to the discovered information. 50d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 51d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param item the discovered entity's item 52d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 53d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void addItem(Item item) { 54d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen synchronized (items) { 55d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen items.add(item); 56d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 57d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 58d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 59d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 60d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Adds a collection of items to the discovered information. Does nothing if itemsToAdd is null 61d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 62d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param itemsToAdd 63d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 64d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void addItems(Collection<Item> itemsToAdd) { 65d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (itemsToAdd == null) return; 66d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen for (Item i : itemsToAdd) { 67d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen addItem(i); 68d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 69d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 70d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 71d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 72d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the discovered items of the queried XMPP entity. 73d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 74d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return an Iterator on the discovered entity's items 75d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 76d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public Iterator<DiscoverItems.Item> getItems() { 77d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen synchronized (items) { 78d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return Collections.unmodifiableList(items).iterator(); 79d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 80d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 81d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 82d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 83d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the node attribute that supplements the 'jid' attribute. A node is merely 84d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * something that is associated with a JID and for which the JID can provide information.<p> 85d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 86d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Node attributes SHOULD be used only when trying to provide or query information which 87d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * is not directly addressable. 88d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 89d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return the node attribute that supplements the 'jid' attribute 90d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 91d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getNode() { 92d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return node; 93d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 94d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 95d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 96d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Sets the node attribute that supplements the 'jid' attribute. A node is merely 97d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * something that is associated with a JID and for which the JID can provide information.<p> 98d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 99d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Node attributes SHOULD be used only when trying to provide or query information which 100d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * is not directly addressable. 101d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 102d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param node the node attribute that supplements the 'jid' attribute 103d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 104d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void setNode(String node) { 105d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.node = node; 106d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 107d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 108d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getChildElementXML() { 109d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen StringBuilder buf = new StringBuilder(); 110d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append("<query xmlns=\"" + NAMESPACE + "\""); 111d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (getNode() != null) { 112d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(" node=\""); 113d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(StringUtils.escapeForXML(getNode())); 114d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append("\""); 115d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 116d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(">"); 117d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen synchronized (items) { 118d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen for (Item item : items) { 119d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(item.toXML()); 120d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 121d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 122d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append("</query>"); 123d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return buf.toString(); 124d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 125d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 126d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 127d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * An item is associated with an XMPP Entity, usually thought of a children of the parent 128d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * entity and normally are addressable as a JID.<p> 129d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 130d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * An item associated with an entity may not be addressable as a JID. In order to handle 131d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * such items, Service Discovery uses an optional 'node' attribute that supplements the 132d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 'jid' attribute. 133d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 134d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public static class Item { 135d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 136d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 137d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Request to create or update the item. 138d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 139d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public static final String UPDATE_ACTION = "update"; 140d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 141d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 142d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Request to remove the item. 143d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 144d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public static final String REMOVE_ACTION = "remove"; 145d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 146d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private String entityID; 147d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private String name; 148d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private String node; 149d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private String action; 150d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 151d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 152d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Create a new Item associated with a given entity. 153d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 154d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param entityID the id of the entity that contains the item 155d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 156d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public Item(String entityID) { 157d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.entityID = entityID; 158d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 159d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 160d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 161d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the entity's ID. 162d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 163d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return the entity's ID. 164d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 165d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getEntityID() { 166d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return entityID; 167d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 168d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 169d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 170d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the entity's name. 171d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 172d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return the entity's name. 173d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 174d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getName() { 175d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return name; 176d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 177d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 178d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 179d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Sets the entity's name. 180d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 181d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param name the entity's name. 182d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 183d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void setName(String name) { 184d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.name = name; 185d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 186d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 187d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 188d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the node attribute that supplements the 'jid' attribute. A node is merely 189d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * something that is associated with a JID and for which the JID can provide information.<p> 190d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 191d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Node attributes SHOULD be used only when trying to provide or query information which 192d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * is not directly addressable. 193d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 194d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return the node attribute that supplements the 'jid' attribute 195d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 196d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getNode() { 197d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return node; 198d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 199d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 200d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 201d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Sets the node attribute that supplements the 'jid' attribute. A node is merely 202d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * something that is associated with a JID and for which the JID can provide information.<p> 203d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 204d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Node attributes SHOULD be used only when trying to provide or query information which 205d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * is not directly addressable. 206d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 207d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param node the node attribute that supplements the 'jid' attribute 208d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 209d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void setNode(String node) { 210d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.node = node; 211d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 212d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 213d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 214d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Returns the action that specifies the action being taken for this item. Possible action 215d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * values are: "update" and "remove". Update should either create a new entry if the node 216d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * and jid combination does not already exist, or simply update an existing entry. If 217d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * "remove" is used as the action, the item should be removed from persistent storage. 218d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 219d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return the action being taken for this item 220d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 221d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String getAction() { 222d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return action; 223d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 224d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 225d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 226d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Sets the action that specifies the action being taken for this item. Possible action 227d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * values are: "update" and "remove". Update should either create a new entry if the node 228d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * and jid combination does not already exist, or simply update an existing entry. If 229d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * "remove" is used as the action, the item should be removed from persistent storage. 230d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 231d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param action the action being taken for this item 232d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 233d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void setAction(String action) { 234d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.action = action; 235d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 236d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 237d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String toXML() { 238d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen StringBuilder buf = new StringBuilder(); 239d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append("<item jid=\"").append(entityID).append("\""); 240d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (name != null) { 241d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(" name=\"").append(StringUtils.escapeForXML(name)).append("\""); 242d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 243d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (node != null) { 244d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(" node=\"").append(StringUtils.escapeForXML(node)).append("\""); 245d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 246d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (action != null) { 247d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append(" action=\"").append(StringUtils.escapeForXML(action)).append("\""); 248d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 249d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buf.append("/>"); 250d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return buf.toString(); 251d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 252d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 253d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen} 254