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: 647575 $
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 }