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.RuntimeCamelException; 023 import org.apache.camel.support.TypeConverterSupport; 024 import org.apache.camel.util.ObjectHelper; 025 026 /** 027 * A type converter which is used to convert from String to enum type 028 * @version 029 */ 030 public class EnumTypeConverter extends TypeConverterSupport { 031 032 @SuppressWarnings("unchecked") 033 public <T> T convertTo(Class<T> type, Exchange exchange, Object value) { 034 if (type.isEnum() && value != null) { 035 String text = value.toString(); 036 Method method; 037 try { 038 method = type.getMethod("valueOf", String.class); 039 } catch (NoSuchMethodException e) { 040 throw new RuntimeCamelException("Could not find valueOf method on enum type: " + type.getName()); 041 } 042 return (T) ObjectHelper.invokeMethod(method, null, text); 043 } 044 return null; 045 } 046 047 }