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.component.bean;
018    
019    import org.apache.camel.Converter;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.FallbackConverter;
022    import org.apache.camel.TypeConverter;
023    import org.apache.camel.spi.TypeConverterRegistry;
024    
025    /**
026     * A set of converter methods for working with beans
027     */
028    @Converter
029    public final class BeanConverter {
030    
031        private BeanConverter() {
032            // Helper Class
033        }
034    
035        @FallbackConverter
036        public static Object convertTo(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) {
037            // use a fallback type converter so we can convert the embedded body if the value is BeanInvocation
038            if (BeanInvocation.class.isAssignableFrom(value.getClass())) {
039    
040                BeanInvocation bi = (BeanInvocation) value;
041                if (bi.getArgs() == null || bi.getArgs().length != 1) {
042                    // not possible to convert at this time as we try to convert the data passed in at first argument
043                    return Void.TYPE;
044                }
045    
046                Class<?> from = bi.getArgs()[0].getClass();
047                Object body = bi.getArgs()[0];
048    
049                // maybe from is already the type we want
050                if (type.isAssignableFrom(from)) {
051                    return body;
052                }
053    
054                // no then try to lookup a type converter
055                TypeConverter tc = registry.lookup(type, from);
056                if (tc != null) {
057                    return tc.convertTo(type, exchange, body);
058                }
059            }
060    
061            return null;
062        }
063    
064    }