How to use

SubscriptionsExtension

in

org.jivesoftware.smackx.pubsub

private List<Subscription> getSubscriptions(SubscriptionsNamespace subscriptionsNamespace, List<ExtensionElement> additionalExtensions,
        Collection<ExtensionElement> returnedExtensions)
        throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
  PubSubElementType pubSubElementType = subscriptionsNamespace.type;
  PubSub pubSub = createPubsubPacket(Type.get, new NodeExtension(pubSubElementType, getId()));
  if (additionalExtensions != null) {
    for (ExtensionElement pe : additionalExtensions) {
      pubSub.addExtension(pe);
    }
  }
  PubSub reply = sendPubsubPacket(pubSub);
  if (returnedExtensions != null) {
    returnedExtensions.addAll(reply.getExtensions());
  }
  SubscriptionsExtension subElem = reply.getExtension(pubSubElementType);
  return subElem.getSubscriptions();
}

@SuppressWarnings("unchecked")
@Override
protected SubscriptionsExtension createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends ExtensionElement> content) {
  SubscriptionsNamespace subscriptionsNamespace = SubscriptionsNamespace.fromXmlns(currentNamespace);
  String nodeId = attributeMap.get("node");
  return new SubscriptionsExtension(subscriptionsNamespace, nodeId, (List<Subscription>) content);
}

  @Override
  public CharSequence toXML(String enclosingNamespace) {
    if ((items == null) || (items.size() == 0)) {
      return super.toXML(enclosingNamespace);
    }
    else {
      StringBuilder builder = new StringBuilder("<");
      builder.append(getElementName());

      if (getNode() != null) {
        builder.append(" node='");
        builder.append(getNode());
        builder.append('\'');
      }
      builder.append('>');

      for (Subscription item : items) {
        builder.append(item.toXML(null));
      }

      builder.append("</");
      builder.append(getElementName());
      builder.append('>');
      return builder.toString();
    }
  }
}

builder.append(getElementName());
if (getNode() != null)
  builder.append(getNode());
  builder.append("'");
builder.append(getElementName());
builder.append(">");
return builder.toString();

/**
 * Gets the subscriptions on the root node.
 *
 * @return List of exceptions
 * @throws XMPPErrorException
 * @throws NoResponseException
 * @throws NotConnectedException
 * @throws InterruptedException
 */
public List<Subscription> getSubscriptions() throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
  Stanza reply = sendPubsubPacket(Type.get, new NodeExtension(PubSubElementType.SUBSCRIPTIONS), null);
  SubscriptionsExtension subElem = reply.getExtension(PubSubElementType.SUBSCRIPTIONS.getElementName(), PubSubElementType.SUBSCRIPTIONS.getNamespace().getXmlns());
  return subElem.getSubscriptions();
}

/**
 * Modify the subscriptions for this PubSub node as owner.
 * <p>
 * Note that the subscriptions are _not_ checked against the existing subscriptions
 * since these are not cached (and indeed could change asynchronously)
 * </p>
 *
 * @param changedSubs subscriptions that have changed
 * @return <code>null</code> or a PubSub stanza with additional information on success.
 * @throws NoResponseException
 * @throws XMPPErrorException
 * @throws NotConnectedException
 * @throws InterruptedException
 * @see <a href="https://xmpp.org/extensions/xep-0060.html#owner-subscriptions-modify">XEP-60 § 8.8.2 Modify Subscriptions</a>
 * @since 4.3
 */
public PubSub modifySubscriptionsAsOwner(List<Subscription> changedSubs)
  throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
  PubSub pubSub = createPubsubPacket(Type.set,
    new SubscriptionsExtension(SubscriptionsNamespace.owner, getId(), changedSubs));
  return sendPubsubPacket(pubSub);
}

builder.append(getElementName());
if (getNode() != null)
  builder.append(getNode());
  builder.append("'");
builder.append(getElementName());
builder.append(">");
return builder.toString();

  @Test
  public void subscriptionsOwnerResultTest() throws Exception {
    // @formatter:off
    final String resultStanza =
     "<iq from='pubsub.example.org' to='julia@example.org/Smack' id='HaT4m-13' type='result'>" +
      "<pubsub xmlns='http://jabber.org/protocol/pubsub#owner'>" +
       "<subscriptions node='test'>" +
        "<subscription jid='foo@example.org/Smack' subscription='subscribed' subid='58C1A6F99F2A7'/>" +
        "<subscription jid='julia@example.org/Smack' subscription='subscribed' subid='58C18F8917321'/>" +
       "</subscriptions>" +
      "</pubsub>" +
     "</iq>";
    // @formatter:on
    XmlPullParser parser = TestUtils.getIQParser(resultStanza);
    PubSub pubsubResult = (PubSub) PacketParserUtils.parseIQ(parser);
    SubscriptionsExtension subElem = pubsubResult.getExtension(PubSubElementType.SUBSCRIPTIONS_OWNER);
    List<Subscription> subscriptions = subElem.getSubscriptions();
    assertEquals(2, subscriptions.size());

    Subscription sub1 = subscriptions.get(0);
    assertThat("foo@example.org/Smack", equalsCharSequence(sub1.getJid()));
    assertEquals(Subscription.State.subscribed, sub1.getState());
    assertEquals("58C1A6F99F2A7", sub1.getId());

    Subscription sub2 = subscriptions.get(1);
    assertThat("julia@example.org/Smack", equalsCharSequence(sub2.getJid()));
    assertEquals(Subscription.State.subscribed, sub2.getState());
    assertEquals("58C18F8917321", sub2.getId());
  }
}

@Override
protected PacketExtension createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends PacketExtension> content)
{
  return new SubscriptionsExtension(attributeMap.get("node"), (List<Subscription>)content);
}

builder.append(getElementName());
if (getNode() != null)
  builder.append(getNode());
  builder.append("'");
builder.append(getElementName());
builder.append(">");
return builder.toString();

@Test
public void modifySubscriptionsAsOwnerTest() throws InterruptedException, SmackException, IOException, XMPPException, Exception {
  ThreadedDummyConnection con = ThreadedDummyConnection.newInstance();
  PubSubManager mgr = new PubSubManager(con, JidTestUtil.PUBSUB_EXAMPLE_ORG);
  Node testNode = new LeafNode(mgr, "princely_musings");
  List<Subscription> ChangeSubs = Arrays.asList(
    new Subscription(JidCreate.from("romeo@montague.org"), Subscription.State.subscribed),
    new Subscription(JidCreate.from("juliet@capulet.org"), Subscription.State.none)
  );
  testNode.modifySubscriptionsAsOwner(ChangeSubs);
  PubSub request = con.getSentPacket();
  assertEquals("http://jabber.org/protocol/pubsub#owner", request.getChildElementNamespace());
  assertEquals("pubsub", request.getChildElementName());
  XmlPullParser parser = TestUtils.getIQParser(request.toXML(null).toString());
  PubSub pubsubResult = (PubSub) PacketParserUtils.parseIQ(parser);
  SubscriptionsExtension subElem = pubsubResult.getExtension(PubSubElementType.SUBSCRIPTIONS_OWNER);
  List<Subscription> subscriptions = subElem.getSubscriptions();
  assertEquals(2, subscriptions.size());
  Subscription sub1 = subscriptions.get(0);
  assertEquals("romeo@montague.org", sub1.getJid().toString());
  assertEquals(Subscription.State.subscribed, sub1.getState());
  Subscription sub2 = subscriptions.get(1);
  assertEquals("juliet@capulet.org", sub2.getJid().toString());
  assertEquals(Subscription.State.none, sub2.getState());
}

@Override
protected PacketExtension createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends PacketExtension> content)
{
  return new SubscriptionsExtension(attributeMap.get("node"), (List<Subscription>)content);
}

/**
 * Get the subscriptions currently associated with this node.
 * 
 * @return List of {@link Subscription}
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  PubSub reply = (PubSub)sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS, getId()));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS);
  return subElem.getSubscriptions();
}

@Override
protected PacketExtension createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends PacketExtension> content)
{
  return new SubscriptionsExtension(attributeMap.get("node"), (List<Subscription>)content);
}

/**
 * Get the subscriptions currently associated with this node.
 * 
 * @return List of {@link Subscription}
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  PubSub reply = (PubSub)sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS, getId()));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS);
  return subElem.getSubscriptions();
}

/**
 * Get the subscriptions currently associated with this node.
 * 
 * @return List of {@link Subscription}
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  PubSub reply = (PubSub)sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS, getId()));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS);
  return subElem.getSubscriptions();
}

/**
 * Gets the subscriptions on the root node.
 * 
 * @return List of exceptions
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  Packet reply = sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS.getElementName(), PubSubElementType.SUBSCRIPTIONS.getNamespace().getXmlns());
  return subElem.getSubscriptions();
}
 

/**
 * Gets the subscriptions on the root node.
 * 
 * @return List of exceptions
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  Packet reply = sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS.getElementName(), PubSubElementType.SUBSCRIPTIONS.getNamespace().getXmlns());
  return subElem.getSubscriptions();
}

/**
 * Gets the subscriptions on the root node.
 * 
 * @return List of exceptions
 * 
 * @throws XMPPException
 */
public List<Subscription> getSubscriptions()
  throws XMPPException
{
  Packet reply = sendPubsubPacket(Type.GET, new NodeExtension(PubSubElementType.SUBSCRIPTIONS));
  SubscriptionsExtension subElem = (SubscriptionsExtension)reply.getExtension(PubSubElementType.SUBSCRIPTIONS.getElementName(), PubSubElementType.SUBSCRIPTIONS.getNamespace().getXmlns());
  return subElem.getSubscriptions();
}