diff options
Diffstat (limited to 'src/org/jivesoftware/smackx/provider/PEPProvider.java')
-rw-r--r-- | src/org/jivesoftware/smackx/provider/PEPProvider.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smackx/provider/PEPProvider.java b/src/org/jivesoftware/smackx/provider/PEPProvider.java new file mode 100644 index 0000000..f33dcde --- /dev/null +++ b/src/org/jivesoftware/smackx/provider/PEPProvider.java @@ -0,0 +1,93 @@ +/** + * $RCSfile: PEPProvider.java,v $ + * $Revision: 1.2 $ + * $Date: 2007/11/06 02:05:09 $ + * + * Copyright 2003-2007 Jive Software. + * + * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.jivesoftware.smackx.provider; + +import java.util.HashMap; +import java.util.Map; + +import org.jivesoftware.smack.packet.PacketExtension; +import org.jivesoftware.smack.provider.PacketExtensionProvider; +import org.xmlpull.v1.XmlPullParser; + +/** + * + * The PEPProvider parses incoming PEPEvent packets. + * (XEP-163 has a weird asymmetric deal: outbound PEP are <iq> + <pubsub> and inbound are <message> + <event>. + * The provider only deals with inbound, and so it only deals with <message>. + * + * Anyhoo... + * + * The way this works is that PEPxxx classes are generic <pubsub> and <message> providers, and anyone who + * wants to publish/receive PEPs, such as <tune>, <geoloc>, etc., simply need to extend PEPItem and register (here) + * a PacketExtensionProvider that knows how to parse that PEPItem extension. + * + * @author Jeff Williams + */ +public class PEPProvider implements PacketExtensionProvider { + + Map<String, PacketExtensionProvider> nodeParsers = new HashMap<String, PacketExtensionProvider>(); + PacketExtension pepItem; + + /** + * Creates a new PEPProvider. + * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor + */ + public PEPProvider() { + } + + public void registerPEPParserExtension(String node, PacketExtensionProvider pepItemParser) { + nodeParsers.put(node, pepItemParser); + } + + /** + * Parses a PEPEvent packet and extracts a PEPItem from it. + * (There is only one per <event>.) + * + * @param parser the XML parser, positioned at the starting element of the extension. + * @return a PacketExtension. + * @throws Exception if a parsing error occurs. + */ + public PacketExtension parseExtension(XmlPullParser parser) throws Exception { + + boolean done = false; + while (!done) { + int eventType = parser.next(); + if (eventType == XmlPullParser.START_TAG) { + if (parser.getName().equals("event")) { + } else if (parser.getName().equals("items")) { + // Figure out the node for this event. + String node = parser.getAttributeValue("", "node"); + // Get the parser for this kind of node, and if found then parse the node. + PacketExtensionProvider nodeParser = nodeParsers.get(node); + if (nodeParser != null) { + pepItem = nodeParser.parseExtension(parser); + } + } + } else if (eventType == XmlPullParser.END_TAG) { + if (parser.getName().equals("event")) { + done = true; + } + } + } + + return pepItem; + } +} |