001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.rest.processor;
014
015import static org.apache.juneau.common.internal.IOUtils.*;
016
017import java.io.*;
018
019import org.apache.juneau.rest.*;
020
021/**
022 * Response processor for {@link Reader} objects.
023 *
024 * <p>
025 * Simply pipes the contents of the {@link Reader} to {@link RestResponse#getNegotiatedWriter()}.
026 *
027 * <h5 class='section'>See Also:</h5><ul>
028 *    <li class='link'><a class="doclink" href="../../../../../index.html#jrs.ResponseProcessors">Response Processors</a>
029 * </ul>
030 */
031public final class ReaderProcessor implements ResponseProcessor {
032
033   @Override /* ResponseProcessor */
034   public int process(RestOpSession opSession) throws IOException {
035
036      RestResponse res = opSession.getResponse();
037      Reader r = res.getContent(Reader.class);
038
039      if (r == null)
040         return NEXT;
041
042      try (Reader r2 = r; Writer w = res.getNegotiatedWriter()) {
043         pipe(r2, w);
044      }
045      return FINISHED;
046   }
047}
048