| /* |
| * 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.gossip.manager.handlers; |
| |
| import org.apache.gossip.manager.GossipCore; |
| import org.apache.gossip.manager.GossipManager; |
| import org.apache.gossip.model.Base; |
| |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| public class MessageInvokerCombiner implements MessageInvoker { |
| private List<MessageInvoker> invokers; |
| |
| public MessageInvokerCombiner() { |
| } |
| |
| public boolean invoke(GossipCore gossipCore, GossipManager gossipManager, Base base) { |
| if (invokers == null) { |
| return false; |
| } |
| boolean result = false; |
| for (MessageInvoker mi : invokers) { |
| result = mi.invoke(gossipCore, gossipManager, base) || result; |
| } |
| return result; |
| } |
| |
| public void clear() { |
| invokers = null; |
| } |
| |
| public void add(MessageInvoker mi) { |
| if (mi == null) { |
| throw new NullPointerException(); |
| } |
| if (invokers == null) { |
| invokers = new CopyOnWriteArrayList<>(); |
| } |
| invokers.add(mi); |
| } |
| } |