How to use

from

method

in

org.jivesoftware.smackx.pubsub.EventElement

  @Override
  public boolean acceptSpecific(Message message) {
    EventElement event = EventElement.from(message);
    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<ExtensionElement> secondLevelList = ((EmbeddedPacketExtension) embedEvent).getExtensions();
        // XEP-0060 allows no elements on second level for notifications. See schema or
        // for example § 4.3:
        // "although event notifications MUST include an empty <items/> element;"
        if (allowEmpty && secondLevelList.isEmpty()) {
          return true;
        }
        if (secondLevelList.size() > 0 && secondLevelList.get(0).getElementName().equals(secondElement))
          return true;
      }
    }
    return false;
  }
}

  @Override
  public void processStanza(Stanza stanza) {
    final Message message = (Message) stanza;
    final EventElement event = EventElement.from(stanza);
    assert (event != null);
    final EntityBareJid from = message.getFrom().asEntityBareJidIfPossible();
    assert (from != null);
    asyncButOrdered.performAsyncButOrdered(from, new Runnable() {
      @Override
      public void run() {
        for (PepListener listener : pepListeners) {
          listener.eventReceived(from, event, message);
        }
      }
    });
  }
};