/*
* 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;
}
}