content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.aries.tutorials.blueprint.greeter.server.osgi;
  
  import java.util.Properties;
  
  import org.apache.aries.tutorials.blueprint.greeter.api.GreeterMessageService;
  import org.osgi.framework.BundleActivator;
  import org.osgi.framework.BundleContext;
  import org.osgi.framework.ServiceRegistration;
  
  public class ServiceRegisteringActivator implements BundleActivator {
  
      private ServiceRegistration greeterServiceRegistration = null;
  
      public void start(BundleContext context) {
          //create the class providing service, and initialise it
          GreeterMessageServiceImpl helloService = new GreeterMessageServiceImpl();
          helloService.setSender("OSGI via BundleActivator");
  
          //register the service
          greeterServiceRegistration =
                  context.registerService(GreeterMessageService.class.getName(), helloService, new Properties());
      }
  
      public void stop(BundleContext context) {
          //unregister the service
          if (greeterServiceRegistration != null) {
              greeterServiceRegistration.unregister();
          }
      }
  
  }
  