Add Node.getSubscriptionsAsOwner() in PubSub API

To retrieve the subscriptions of a PubSub node as owner. Fixes
SMACK-623.

smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/Node.java

@@ -166,8 +166,56 @@ abstract public class Node
      */
     public List<Subscription> getSubscriptions(List<PacketExtension> additionalExtensions, Collection<PacketExtension> returnedExtensions)
                     throws NoResponseException, XMPPErrorException, NotConnectedException {
-        PubSub pubSub = createPubsubPacket(Type.get, new NodeExtension(
+        return getSubscriptions(additionalExtensions, returnedExtensions, null);
-                        PubSubElementType.SUBSCRIPTIONS, getId()));
+    }
+
+    /**
+     * Get the subscriptions currently associated with this node as owner.
+     *
+     * @return List of {@link Subscription}
+     * @throws XMPPErrorException
+     * @throws NoResponseException
+     * @throws NotConnectedException
+     * @see #getSubscriptionsAsOwner(List, Collection)
+     * @since 4.1
+     */
+    public List<Subscription> getSubscriptionsAsOwner() throws NoResponseException, XMPPErrorException,
+                    NotConnectedException {
+        return getSubscriptionsAsOwner(null, null);
+    }
+
+    /**
+     * Get the subscriptions currently associated with this node as owner.
+     * <p>
+     * Unlike {@link #getSubscriptions(List, Collection)}, which only retrieves the subscriptions of the current entity
+     * ("user"), this method returns a list of <b>all</b> subscriptions. This requires the entity to have the sufficient
+     * privileges to manage subscriptions.
+     * </p>
+     * <p>
+     * {@code additionalExtensions} can be used e.g. to add a "Result Set Management" extension.
+     * {@code returnedExtensions} will be filled with the packet extensions found in the answer.
+     * </p>
+     *
+     * @param additionalExtensions
+     * @param returnedExtensions a collection that will be filled with the returned packet extensions
+     * @return List of {@link Subscription}
+     * @throws NoResponseException
+     * @throws XMPPErrorException
+     * @throws NotConnectedException
+     * @see <a href="http://www.xmpp.org/extensions/xep-0060.html#owner-subscriptions-retrieve">XEP-60 § 8.8.1 -
+     *      Retrieve Subscriptions List</a>
+     * @since 4.1
+     */
+    public List<Subscription> getSubscriptionsAsOwner(List<PacketExtension> additionalExtensions,
+                    Collection<PacketExtension> returnedExtensions) throws NoResponseException, XMPPErrorException,
+                    NotConnectedException {
+        return getSubscriptions(additionalExtensions, returnedExtensions, PubSubNamespace.OWNER);
+    }
+
+    private List<Subscription> getSubscriptions(List<PacketExtension> additionalExtensions,
+                    Collection<PacketExtension> returnedExtensions, PubSubNamespace pubSubNamespace)
+                    throws NoResponseException, XMPPErrorException, NotConnectedException {
+        PubSub pubSub = createPubsubPacket(Type.get, new NodeExtension(PubSubElementType.SUBSCRIPTIONS, getId()), pubSubNamespace);
         if (additionalExtensions != null) {
             for (PacketExtension pe : additionalExtensions) {
                 pubSub.addExtension(pe);

smack-extensions/src/main/resources/org.jivesoftware.smackx/extensions.providers

@@ -339,6 +339,18 @@
         <className>org.jivesoftware.smackx.pubsub.provider.FormNodeProvider</className>
     </extensionProvider>
 
+	<extensionProvider>
+		<elementName>subscriptions</elementName>
+		<namespace>http://jabber.org/protocol/pubsub#owner</namespace>
+		<className>org.jivesoftware.smackx.pubsub.provider.SubscriptionsProvider</className>
+	</extensionProvider>
+
+	<extensionProvider>
+		<elementName>subscription</elementName>
+		<namespace>http://jabber.org/protocol/pubsub#owner</namespace>
+		<className>org.jivesoftware.smackx.pubsub.provider.SubscriptionProvider</className>
+	</extensionProvider>
+
     <!-- XEP-0060 pubsub#event -->
     <extensionProvider>
     	<elementName>event</elementName>

smack-extensions/src/test/java/org/jivesoftware/smackx/pubsub/provider/PubSubProviderTest.java

@@ -0,0 +1,63 @@
+/**
+ *
+ * Copyright 2014 Florian Schmaus
+ *
+ * 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.pubsub.provider;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.List;
+
+import org.jivesoftware.smack.test.util.TestUtils;
+import org.jivesoftware.smack.util.PacketParserUtils;
+import org.jivesoftware.smackx.pubsub.PubSubElementType;
+import org.jivesoftware.smackx.pubsub.Subscription;
+import org.jivesoftware.smackx.pubsub.SubscriptionsExtension;
+import org.jivesoftware.smackx.pubsub.packet.PubSub;
+import org.junit.Test;
+import org.xmlpull.v1.XmlPullParser;
+
+public class PubSubProviderTest {
+
+    @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.parse(parser, null);
+        SubscriptionsExtension subElem = pubsubResult.getExtension(PubSubElementType.SUBSCRIPTIONS);
+        List<Subscription> subscriptions = subElem.getSubscriptions();
+        assertEquals(2, subscriptions.size());
+
+        Subscription sub1 = subscriptions.get(0);
+        assertEquals("foo@example.org/Smack", sub1.getJid());
+        assertEquals(Subscription.State.subscribed, sub1.getState());
+        assertEquals("58C1A6F99F2A7", sub1.getId());
+
+        Subscription sub2 = subscriptions.get(1);
+        assertEquals("julia@example.org/Smack", sub2.getJid());
+        assertEquals(Subscription.State.subscribed, sub2.getState());
+        assertEquals("58C18F8917321", sub2.getId());
+    }
+}