001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.converter.stream; 018 019 import java.io.ByteArrayInputStream; 020 import java.io.IOException; 021 import java.io.InputStream; 022 023 import javax.xml.transform.TransformerException; 024 import javax.xml.transform.stream.StreamSource; 025 026 import org.apache.camel.Converter; 027 import org.apache.camel.converter.IOConverter; 028 import org.apache.camel.converter.jaxp.StringSource; 029 import org.apache.camel.converter.jaxp.XmlConverter; 030 031 /** 032 * A set of {@link Converter} methods for wrapping stream-based messages in a {@link StreamCache} 033 * implementation to ensure message re-readability (eg multicasting, retrying) 034 */ 035 @Converter 036 public class StreamCacheConverter { 037 038 private XmlConverter converter = new XmlConverter(); 039 040 @Converter 041 public StreamCache convertToStreamCache(StreamSource source) throws TransformerException { 042 //TODO: we can probably build a more generic converter method to support other kinds of Sources as well (e.g. SAXSource, StAXSource, ...) 043 return new StreamSourceCache(converter.toString(source)); 044 } 045 046 @Converter 047 public StreamCache convertToStreamCache(InputStream stream) throws IOException { 048 return new InputStreamCache(IOConverter.toBytes(stream)); 049 } 050 051 private class StreamSourceCache extends StringSource implements StreamCache { 052 053 private static final long serialVersionUID = 4147248494104812945L; 054 055 public StreamSourceCache(String text) { 056 super(text); 057 } 058 } 059 060 private class InputStreamCache extends ByteArrayInputStream implements StreamCache { 061 062 public InputStreamCache(byte[] data) { 063 super(data); 064 } 065 066 } 067 }