How to use

getExtensions

method

in

org.jivesoftware.smackx.pubsub.EventElement

    @Override
    public void processStanza(Stanza packet) {
// CHECKSTYLE:OFF
      EventElement event = packet.getExtension("event", PubSubNamespace.event.getXmlns());

      List<ExtensionElement> extList = event.getExtensions();

      if (extList.get(0).getElementName().equals(PubSubElementType.PURGE_EVENT.getElementName())) {
        listener.handlePurge();
      }
      else {
        ItemsExtension itemsElem = (ItemsExtension)event.getEvent();
        @SuppressWarnings("unchecked")
        Collection<RetractItem> pubItems = (Collection<RetractItem>) itemsElem.getItems();
        List<String> items = new ArrayList<>(pubItems.size());

        for (RetractItem item : pubItems) {
          items.add(item.getId());
        }

        ItemDeleteEvent eventItems = new ItemDeleteEvent(itemsElem.getNode(), items, getSubscriptionIds(packet));
        listener.handleDeletedItems(eventItems);
      }
// CHECKSTYLE:ON
    }
  }

@Test
public void parseBasicItem() throws Exception {
  XmlPullParser parser = PacketParserUtils.getParserFor(
    "<message from='pubsub.myserver.com' to='francisco@denmark.lit' id='foo'>" +
      "<event xmlns='http://jabber.org/protocol/pubsub#event'>" +
        "<items node='testNode'>" +
          "<item id='testid1' />" +
        "</items>" +
       "</event>" +
    "</message>");
  Stanza message = PacketParserUtils.parseMessage(parser);
  ExtensionElement eventExt = message.getExtension(PubSubNamespace.event.getXmlns());
  assertTrue(eventExt instanceof EventElement);
  EventElement event = (EventElement) eventExt;
  assertEquals(EventElementType.items, event.getEventType());
  assertEquals(1, event.getExtensions().size());
  assertTrue(event.getExtensions().get(0) instanceof ItemsExtension);
  assertEquals(1, ((ItemsExtension) event.getExtensions().get(0)).items.size());
  NamedElement itemExt = ((ItemsExtension) event.getExtensions().get(0)).items.get(0);
  assertTrue(itemExt instanceof Item);
  assertEquals("testid1", ((Item) itemExt).getId());
}

for (ExtensionElement items : event.getExtensions()) {
  if (!(items instanceof ItemsExtension)) {
    continue;

EventElement event = (EventElement) eventExt;
assertEquals(EventElementType.items, event.getEventType());
assertEquals(1, event.getExtensions().size());
assertTrue(event.getExtensions().get(0) instanceof ItemsExtension);
assertEquals(1, ((ItemsExtension) event.getExtensions().get(0)).items.size());
NamedElement itemExt = ((ItemsExtension) event.getExtensions().get(0)).items.get(0);
assertTrue(itemExt instanceof PayloadItem<?>);
PayloadItem<?> item = (PayloadItem<?>) itemExt;

@Test
public void parseSimplePayloadItem() throws Exception {
  String itemContent = "<foo xmlns='smack:test'>Some text</foo>";
  XmlPullParser parser = PacketParserUtils.getParserFor(
    "<message from='pubsub.myserver.com' to='francisco@denmark.lit' id='foo'>" +
      "<event xmlns='http://jabber.org/protocol/pubsub#event'>" +
        "<items node='testNode'>" +
          "<item id='testid1' >" +
            itemContent +
          "</item>" +
        "</items>" +
       "</event>" +
    "</message>");
  Stanza message = PacketParserUtils.parseMessage(parser);
  ExtensionElement eventExt = message.getExtension(PubSubNamespace.event.getXmlns());
  EventElement event = (EventElement) eventExt;
  NamedElement itemExt = ((ItemsExtension) event.getExtensions().get(0)).items.get(0);
  assertTrue(itemExt instanceof PayloadItem<?>);
  PayloadItem<?> item = (PayloadItem<?>) itemExt;
  assertEquals("testid1", item.getId());
  assertTrue(item.getPayload() instanceof SimplePayload);
  SimplePayload payload = (SimplePayload) item.getPayload();
  assertEquals("foo", payload.getElementName());
  assertEquals("smack:test", payload.getNamespace());
  assertXMLEqual(itemContent, payload.toXML(null).toString());
}

ExtensionElement eventExt = message.getExtension(PubSubNamespace.event.getXmlns());
EventElement event = (EventElement) eventExt;
NamedElement itemExt = ((ItemsExtension) event.getExtensions().get(0)).items.get(0);

  public void processPacket(Packet packet)
  {
    EventElement event = (EventElement)packet.getExtension("event", PubSubNamespace.EVENT.getXmlns());
    
    List<PacketExtension> extList = event.getExtensions();
    
    if (extList.get(0).getElementName().equals(PubSubElementType.PURGE_EVENT.getElementName()))
    {
      listener.handlePurge();
    }
    else
    {
      ItemsExtension itemsElem = (ItemsExtension)event.getEvent();
      Collection<? extends PacketExtension> pubItems = itemsElem.getItems();
      Iterator<RetractItem> it = (Iterator<RetractItem>)pubItems.iterator();
      List<String> items = new ArrayList<String>(pubItems.size());
      while (it.hasNext())
      {
        RetractItem item = it.next();
        items.add(item.getId());
      }
      ItemDeleteEvent eventItems = new ItemDeleteEvent(itemsElem.getNode(), items, getSubscriptionIds(packet));
      listener.handleDeletedItems(eventItems);
    }
  }
}

  public void processPacket(Packet packet)
  {
    EventElement event = (EventElement)packet.getExtension("event", PubSubNamespace.EVENT.getXmlns());
    
    List<PacketExtension> extList = event.getExtensions();
    
    if (extList.get(0).getElementName().equals(PubSubElementType.PURGE_EVENT.getElementName()))
    {
      listener.handlePurge();
    }
    else
    {
      ItemsExtension itemsElem = (ItemsExtension)event.getEvent();
      Collection<? extends PacketExtension> pubItems = itemsElem.getItems();
      Iterator<RetractItem> it = (Iterator<RetractItem>)pubItems.iterator();
      List<String> items = new ArrayList<String>(pubItems.size());
      while (it.hasNext())
      {
        RetractItem item = it.next();
        items.add(item.getId());
      }
      ItemDeleteEvent eventItems = new ItemDeleteEvent(itemsElem.getNode(), items, getSubscriptionIds(packet));
      listener.handleDeletedItems(eventItems);
    }
  }
}

  public void processPacket(Packet packet)
  {
    EventElement event = (EventElement)packet.getExtension("event", PubSubNamespace.EVENT.getXmlns());
    
    List<PacketExtension> extList = event.getExtensions();
    
    if (extList.get(0).getElementName().equals(PubSubElementType.PURGE_EVENT.getElementName()))
    {
      listener.handlePurge();
    }
    else
    {
      ItemsExtension itemsElem = (ItemsExtension)event.getEvent();
      Collection<? extends PacketExtension> pubItems = itemsElem.getItems();
      Iterator<RetractItem> it = (Iterator<RetractItem>)pubItems.iterator();
      List<String> items = new ArrayList<String>(pubItems.size());
      while (it.hasNext())
      {
        RetractItem item = it.next();
        items.add(item.getId());
      }
      ItemDeleteEvent eventItems = new ItemDeleteEvent(itemsElem.getNode(), items, getSubscriptionIds(packet));
      listener.handleDeletedItems(eventItems);
    }
  }
}