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
   *
   *      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.camel.dataformat.rss;
  
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import com.rometools.rome.feed.synd.SyndFeed;
  import org.apache.camel.Exchange;
  import org.apache.camel.spi.DataFormat;
  import org.apache.camel.spi.DataFormatName;
  import org.apache.camel.spi.annotations.Dataformat;
  import org.apache.camel.support.ExchangeHelper;
  import org.apache.camel.support.service.ServiceSupport;
  
  /**
   * RSS DataFormat
   * <p/>
   * This data format supports two operations:
   * <ul>
   * <li>marshal = from ROME SyndFeed to XML String</li>
   * <li>unmarshal = from XML String to ROME SyndFeed</li>
   * </ul>
   * <p/>
   * Uses <a href="https://rome.dev.java.net/">ROME</a> for RSS parsing.
   * <p/>
   */
  @Dataformat("rss")
  public class RssDataFormat extends ServiceSupport implements DataFormat, DataFormatName {
  
      @Override
      public String getDataFormatName() {
          return "rss";
      }
  
      @Override
      public void marshal(Exchange exchange, Object body, OutputStream out) throws Exception {
          SyndFeed feed = ExchangeHelper.convertToMandatoryType(exchange, SyndFeed.class, body);
          String xml = RssConverter.feedToXml(feed);
          out.write(xml.getBytes());
      }
  
      @Override
      public Object unmarshal(Exchange exchange, InputStream in) throws Exception {
          String xml = ExchangeHelper.convertToMandatoryType(exchange, String.class, in);
          return RssConverter.xmlToFeed(xml);
      }
  
      @Override
      protected void doStart() throws Exception {
          // noop
      }
  
      @Override
      protected void doStop() throws Exception {
          // noop
      }
  }
  