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.provider; 018 019import java.io.IOException; 020 021import org.jivesoftware.smack.provider.ExtensionElementProvider; 022 023import org.jivesoftware.smackx.pubsub.Subscription; 024 025import org.xmlpull.v1.XmlPullParser; 026import org.xmlpull.v1.XmlPullParserException; 027 028/** 029 * Parses the <b>subscription</b> element out of the PubSub IQ message from 030 * the server as specified in the <a href="http://xmpp.org/extensions/xep-0060.html#schemas-pubsub">subscription schema</a>. 031 * 032 * @author Robin Collier 033 */ 034public class SubscriptionProvider extends ExtensionElementProvider<Subscription> 035{ 036 @Override 037 public Subscription parse(XmlPullParser parser, int initialDepth) 038 throws XmlPullParserException, IOException { 039 String jid = parser.getAttributeValue(null, "jid"); 040 String nodeId = parser.getAttributeValue(null, "node"); 041 String subId = parser.getAttributeValue(null, "subid"); 042 String state = parser.getAttributeValue(null, "subscription"); 043 boolean isRequired = false; 044 045 int tag = parser.next(); 046 047 if ((tag == XmlPullParser.START_TAG) && parser.getName().equals("subscribe-options")) 048 { 049 tag = parser.next(); 050 051 if ((tag == XmlPullParser.START_TAG) && parser.getName().equals("required")) 052 isRequired = true; 053 054 while (tag != XmlPullParser.END_TAG && !parser.getName().equals("subscribe-options")) tag = parser.next(); 055 } 056 while (parser.getEventType() != XmlPullParser.END_TAG) parser.next(); 057 return new Subscription(jid, nodeId, subId, (state == null ? null : Subscription.State.valueOf(state)), isRequired); 058 } 059 060}