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; 018 019 /** 020 * A pluggable strategy to be able to convert objects <a 021 * href="http://activemq.apache.org/camel/type-converter.html">to different 022 * types</a> such as to and from String, InputStream/OutputStream, 023 * Reader/Writer, Document, byte[], ByteBuffer etc 024 * 025 * @version $Revision: 47144 $ 026 */ 027 public interface TypeConverter { 028 029 /** 030 * Converts the value to the specified type 031 * 032 * @param type the requested type 033 * @param value the value to be converted 034 * @return the converted value or <tt>null</tt> if it can not be converted 035 */ 036 <T> T convertTo(Class<T> type, Object value); 037 038 /** 039 * Converts the value to the specified type in the context of an exchange 040 * <p/> 041 * Used when conversion requires extra information from the current 042 * exchange (such as encoding). 043 * 044 * @param type the requested type 045 * @param exchange the current exchange 046 * @param value the value to be converted 047 * @return the converted value or <tt>null</tt> if it can not be converted 048 */ 049 <T> T convertTo(Class<T> type, Exchange exchange, Object value); 050 }