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.blueprint;
  
  import org.apache.aries.blueprint.annotation.bean.Bean;
  import org.apache.aries.blueprint.annotation.config.ConfigProperty;
  import org.apache.aries.blueprint.annotation.service.Service;
  import org.apache.aries.tutorials.blueprint.greeter.api.GreeterMessageService;
  
  @Service
  @Bean
  public class GreeterMessageServiceImpl implements GreeterMessageService {
      private String sender = "<unset>";
  
      public String getGreetingMessage() {
          return "Hello World! from : " + sender;
      }
  
      @ConfigProperty("Blueprint Greeting Service")
      public void setSender(String sender) {
          this.sender = sender;
          if (this.sender == null)
              this.sender = "";
      }
  
  }
  