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 032 */ 033 public class StringDataFormat implements DataFormat { 034 035 private final 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 }