Java tutorial
/* * 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.hoya.yarn.service; import org.apache.hadoop.service.Service; import java.util.List; /** * Interface that services with public methods to manipulate child services * should implement */ public interface Parent extends Service { void addService(Service service); /** * Get an unmodifiable list of services * @return a list of child services at the time of invocation - * added services will not be picked up. */ List<Service> getServices(); }