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.packet.IQ; 022import org.jivesoftware.smack.packet.IqData; 023import org.jivesoftware.smack.packet.XmlEnvironment; 024import org.jivesoftware.smack.parsing.SmackParsingException; 025import org.jivesoftware.smack.provider.IqProvider; 026import org.jivesoftware.smack.util.PacketParserUtils; 027import org.jivesoftware.smack.xml.XmlPullParser; 028import org.jivesoftware.smack.xml.XmlPullParserException; 029 030import org.jivesoftware.smackx.pubsub.packet.PubSub; 031import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace; 032 033/** 034 * Parses the root PubSub stanza extensions of the {@link IQ} stanza and returns 035 * a {@link PubSub} instance. 036 * 037 * @author Robin Collier 038 */ 039public class PubSubProvider extends IqProvider<PubSub> { 040 @Override 041 public PubSub parse(XmlPullParser parser, int initialDepth, IqData iqData, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException, SmackParsingException { 042 String namespace = parser.getNamespace(); 043 PubSubNamespace pubSubNamespace = PubSubNamespace.valueOfFromXmlns(namespace); 044 PubSub pubsub = new PubSub(pubSubNamespace); 045 046 outerloop: while (true) { 047 XmlPullParser.Event eventType = parser.next(); 048 switch (eventType) { 049 case START_ELEMENT: 050 PacketParserUtils.addExtensionElement(pubsub, parser, xmlEnvironment); 051 break; 052 case END_ELEMENT: 053 if (parser.getDepth() == initialDepth) { 054 break outerloop; 055 } 056 break; 057 default: 058 // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement. 059 break; 060 } 061 } 062 return pubsub; 063 } 064}