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.impl; 018 019 import java.io.IOException; 020 import java.io.InputStream; 021 import java.io.OutputStream; 022 023 import org.apache.camel.Exchange; 024 import org.apache.camel.converter.IOConverter; 025 import org.apache.camel.spi.DataFormat; 026 import org.apache.camel.util.ExchangeHelper; 027 028 /** 029 * The text based <a href="http://activemq.apache.org/camel/data-format.html">data format</a> supporting 030 * charset encoding. 031 * 032 * @version $Revision: 37863 $ 033 */ 034 public class StringDataFormat implements DataFormat { 035 036 private String charset; 037 038 public StringDataFormat(String charset) { 039 this.charset = charset; 040 } 041 042 public void marshal(Exchange exchange, Object graph, OutputStream stream) throws IOException { 043 String text = ExchangeHelper.convertToType(exchange, String.class, graph); 044 045 byte[] bytes; 046 if (charset != null) { 047 bytes = text.getBytes(charset); 048 } else { 049 bytes = text.getBytes(); 050 } 051 stream.write(bytes); 052 } 053 054 public Object unmarshal(Exchange exchange, InputStream stream) throws IOException, ClassNotFoundException { 055 byte[] bytes = IOConverter.toBytes(stream); 056 057 String answer; 058 if (charset != null) { 059 answer = new String(bytes, charset); 060 } else { 061 answer = new String(bytes); 062 } 063 064 return answer; 065 } 066 067 }