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.spi.TypeConverterRegistry; 023 import org.apache.camel.support.TypeConverterSupport; 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 031 */ 032 public class StaticMethodFallbackTypeConverter extends TypeConverterSupport { 033 private final Method method; 034 private final boolean useExchange; 035 private final TypeConverterRegistry registry; 036 private final boolean allowNull; 037 038 @Deprecated 039 public StaticMethodFallbackTypeConverter(Method method, TypeConverterRegistry registry) { 040 this(method, registry, false); 041 } 042 043 public StaticMethodFallbackTypeConverter(Method method, TypeConverterRegistry registry, boolean allowNull) { 044 this.method = method; 045 this.useExchange = method.getParameterTypes().length == 4; 046 this.registry = registry; 047 this.allowNull = allowNull; 048 } 049 050 @Override 051 public boolean allowNull() { 052 return allowNull; 053 } 054 055 @Override 056 public String toString() { 057 return "StaticMethodFallbackTypeConverter: " + method; 058 } 059 060 @SuppressWarnings("unchecked") 061 public <T> T convertTo(Class<T> type, Exchange exchange, Object value) { 062 return useExchange ? (T)ObjectHelper.invokeMethod(method, null, type, exchange, value, registry) 063 : (T)ObjectHelper.invokeMethod(method, null, type, value, registry); 064 } 065 066 }