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.lang.reflect.Method; 020 021import org.apache.camel.Exchange; 022import org.apache.camel.TypeConverter; 023import org.apache.camel.support.TypeConverterSupport; 024import org.apache.camel.util.ObjectHelper; 025 026/** 027 * A {@link TypeConverter} implementation which invokes a static method to convert from a type to another type 028 * 029 * @version 030 */ 031public class StaticMethodTypeConverter extends TypeConverterSupport { 032 private final Method method; 033 private final boolean useExchange; 034 private final boolean allowNull; 035 036 @Deprecated 037 public StaticMethodTypeConverter(Method method) { 038 this(method, false); 039 } 040 041 public StaticMethodTypeConverter(Method method, boolean allowNull) { 042 this.method = method; 043 this.useExchange = method.getParameterCount() == 2; 044 this.allowNull = allowNull; 045 } 046 047 @Override 048 public String toString() { 049 return "StaticMethodTypeConverter: " + method; 050 } 051 052 @Override 053 public boolean allowNull() { 054 return allowNull; 055 } 056 057 @SuppressWarnings("unchecked") 058 public <T> T convertTo(Class<T> type, Exchange exchange, Object value) { 059 return useExchange ? (T)ObjectHelper.invokeMethod(method, null, value, exchange) 060 : (T)ObjectHelper.invokeMethod(method, null, value); 061 } 062 063}