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.reshandlers; 014 015import java.io.*; 016 017import org.apache.juneau.rest.*; 018import org.apache.juneau.http.exception.*; 019import org.apache.juneau.utils.*; 020 021/** 022 * Response handler for {@link InputStream} objects. 023 * 024 * <p> 025 * Simply pipes the contents of the {@link InputStream} to {@link RestResponse#getNegotiatedOutputStream()}. 026 * 027 * <p> 028 * Sets the <c>Content-Type</c> response header to whatever was set via {@link RestResponse#setContentType(String)}. 029 * 030 * <ul class='seealso'> 031 * <li class='link'>{@doc RestmReturnTypes} 032 * </ul> 033 */ 034public final class InputStreamHandler implements ResponseHandler { 035 036 @Override /* ResponseHandler */ 037 public boolean handle(RestRequest req, RestResponse res) throws IOException, NotAcceptable, HttpException { 038 if (res.isOutputType(InputStream.class)) { 039 try (OutputStream os = res.getNegotiatedOutputStream()) { 040 IOPipe.create(res.getOutput(InputStream.class), os).run(); 041 } 042 return true; 043 } 044 return false; 045 } 046}