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.spi.DataFormat;
025 import org.apache.camel.util.ExchangeHelper;
026
027 /**
028 * The text based <a href="http://camel.apache.org/data-format.html">data format</a> supporting
029 * charset encoding.
030 *
031 * @version $Revision: 749236 $
032 */
033 public class StringDataFormat implements DataFormat {
034
035 private String charset;
036
037 public StringDataFormat(String charset) {
038 this.charset = charset;
039 }
040
041 public void marshal(Exchange exchange, Object graph, OutputStream stream) throws IOException {
042 String text = ExchangeHelper.convertToType(exchange, String.class, graph);
043
044 byte[] bytes;
045 if (charset != null) {
046 bytes = text.getBytes(charset);
047 } else {
048 bytes = text.getBytes();
049 }
050 stream.write(bytes);
051 }
052
053 public Object unmarshal(Exchange exchange, InputStream stream) throws IOException {
054 byte[] bytes = ExchangeHelper.convertToType(exchange, byte[].class, stream);
055
056 String answer;
057 if (charset != null) {
058 answer = new String(bytes, charset);
059 } else {
060 answer = new String(bytes);
061 }
062
063 return answer;
064 }
065
066 }