| /** |
| * 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 sample.osgi.service.consumer; |
| |
| import org.apache.karaf.util.tracker.BaseActivator; |
| import org.apache.karaf.util.tracker.annotation.RequireService; |
| import org.apache.karaf.util.tracker.annotation.Services; |
| import sample.osgi.service.provider.HelloService; |
| |
| /** |
| * Simple activator that retrieve the hello service and use it. |
| */ |
| @Services( |
| requires = { |
| @RequireService(HelloService.class) |
| } |
| ) |
| public class Activator extends BaseActivator { |
| |
| @Override |
| public void doStart() throws Exception { |
| HelloService helloService = getTrackedService(HelloService.class); |
| |
| // basic usage, in real life, it could be injected and used in a bean or whatever |
| System.out.println("Hello " + helloService.hello("World")); |
| } |
| |
| @Override |
| public void doStop() { |
| super.doStop(); |
| } |
| |
| |
| } |