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 */
017package org.apache.camel.impl.converter;
018
019import java.util.concurrent.Future;
020
021import org.apache.camel.Exchange;
022import org.apache.camel.Message;
023import org.apache.camel.WrappedFile;
024import org.apache.camel.component.bean.BeanInvocation;
025import org.apache.camel.support.TypeConverterSupport;
026
027/**
028 * A simple converter that can convert any object to a String type by using the
029 * toString() method of the object.
030 *
031 * @version 
032 */
033public class ToStringTypeConverter extends TypeConverterSupport {
034
035    @SuppressWarnings("unchecked")
036    @Override
037    public <T> T convertTo(Class<T> toType, Exchange exchange, Object value) {
038        if (value != null) {
039
040            // should not try to convert Message
041            if (Message.class.isAssignableFrom(value.getClass())) {
042                return (T) Void.TYPE;
043            }
044
045            // should not try to convert future
046            if (Future.class.isAssignableFrom(value.getClass())) {
047                return (T) Void.TYPE;
048            }
049
050            // should not try to convert bean invocations
051            if (BeanInvocation.class.isAssignableFrom(value.getClass())) {
052                return (T) Void.TYPE;
053            }
054
055            // should not try to convert files
056            if (WrappedFile.class.isAssignableFrom(value.getClass())) {
057                return (T) Void.TYPE;
058            }
059
060            if (toType.equals(String.class)) {
061                return (T)value.toString();
062            }
063        }
064        return null;
065    }
066
067}