/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.apache.vysper.xmpp.modules.extension.xep0060_pubsub; import java.util.ArrayList; import java.util.List; import org.apache.vysper.xmpp.addressing.Entity; import org.apache.vysper.xmpp.modules.extension.xep0060_pubsub.handler.SubscriberSubscriptionVisitor; import org.apache.vysper.xmpp.modules.extension.xep0060_pubsub.model.LeafNode; /** * This Visitor is used to traverse over all nodes of a collection node * and collect all subscriptions of a user (matching bare JIDs). * * @author The Apache MINA Project (http://mina.apache.org) */ public class NodeSubscriberVisitor implements NodeVisitor { // the collected subscriptions protected List<SubscriptionItem> subscriptions = null; // the user to filter protected Entity bareJID = null; /** * Create a new visitor with the user as filter. */ public NodeSubscriberVisitor(Entity userJID) { this.bareJID = userJID.getBareJID(); subscriptions = new ArrayList<SubscriptionItem>(); } /** * Called for each node. Adds all subscriptions to the global list of subscriptions. */ public void visit(LeafNode node) { SubscriberSubscriptionVisitor subscriptionVisitor = new SubscriberSubscriptionVisitor(bareJID); node.acceptSubscribers(subscriptionVisitor); subscriptions.addAll(subscriptionVisitor.getSubscriptions()); } /** * Returns the list of subscriptions. */ public List<SubscriptionItem> getSubscriptions() { return subscriptions; } }