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.converter;
018
019 import java.lang.reflect.Method;
020
021 import org.apache.camel.Exchange;
022 import org.apache.camel.TypeConverter;
023 import org.apache.camel.spi.TypeConverterRegistry;
024 import org.apache.camel.util.ObjectHelper;
025
026 /**
027 * A {@link org.apache.camel.TypeConverter} implementation which invokes a static method
028 * as a fallback type converter from a type to another type
029 *
030 * @version $Revision: 747062 $
031 */
032 public class StaticMethodFallbackTypeConverter implements TypeConverter {
033 private final Method method;
034 private final boolean useExchange;
035 private final TypeConverterRegistry registry;
036
037 public StaticMethodFallbackTypeConverter(Method method, TypeConverterRegistry registry) {
038 this.method = method;
039 this.useExchange = method.getParameterTypes().length == 4;
040 this.registry = registry;
041 }
042
043 @Override
044 public String toString() {
045 return "StaticMethodFallbackTypeConverter: " + method;
046 }
047
048 public <T> T convertTo(Class<T> type, Object value) {
049 return convertTo(type, null, value);
050 }
051
052 @SuppressWarnings("unchecked")
053 public <T> T convertTo(Class<T> type, Exchange exchange, Object value) {
054 return useExchange ? (T)ObjectHelper.invokeMethod(method, null, type, exchange, value, registry)
055 : (T)ObjectHelper.invokeMethod(method, null, type, value, registry);
056 }
057 }