public boolean accept(Packet packet) {
if (!(packet instanceof Message)) return false;
EventElement event =
(EventElement) packet.getExtension("event", PubSubNamespace.EVENT.getXmlns());
if (event == null) return false;
NodeExtension embedEvent = event.getEvent();
if (embedEvent == null) return false;
if (embedEvent.getElementName().equals(firstElement)) {
if (!embedEvent.getNode().equals(getId())) return false;
if (secondElement == null) return true;
if (embedEvent instanceof EmbeddedPacketExtension) {
List<PacketExtension> secondLevelList =
((EmbeddedPacketExtension) embedEvent).getExtensions();
if (secondLevelList.size() > 0
&& secondLevelList.get(0).getElementName().equals(secondElement)) return true;
}
}
return false;
}
/**
* Creates an instant node, if supported.
*
* @return The node that was created
* @exception XMPPException
*/
public Node createNode() throws XMPPException {
PubSub reply = (PubSub) sendPubsubPacket(Type.SET, new NodeExtension(PubSubElementType.CREATE));
NodeExtension elem =
(NodeExtension) reply.getExtension("create", PubSubNamespace.BASIC.getXmlns());
Node newNode = new Node(con, elem.getNode());
newNode.setTo(to);
nodeMap.put(newNode.getId(), newNode);
return newNode;
}