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.util;
018
019
020
021 import java.lang.reflect.Method;
022 import java.util.ArrayList;
023 import java.util.Collections;
024 import java.util.Comparator;
025 import java.util.List;
026
027 import org.apache.camel.TypeConverter;
028 import org.apache.camel.impl.converter.AnnotationTypeConverterLoader;
029 import org.apache.camel.impl.converter.TypeConverterRegistry;
030 import static org.apache.camel.util.ObjectHelper.equal;
031
032 public class ReportingTypeConverterLoader extends AnnotationTypeConverterLoader {
033
034 private static final Comparator<TypeMapping> COMPARE_LAST_LOADED_FIRST = new Comparator<TypeMapping>() {
035 public int compare(TypeMapping t1, TypeMapping t2) {
036 if (equal(t1.fromType, t2.fromType)) {
037 return equal(t1.toType, t2.toType) ? t1.index - t2.index : ObjectHelper
038 .compare(getTypeName(t1.toType), getTypeName(t2.toType));
039 }
040 return ObjectHelper.compare(getTypeName(t1.fromType), getTypeName(t2.fromType));
041 }
042
043 };
044 private List<TypeMapping> typeMappings = new ArrayList<TypeMapping>();
045
046 public TypeMapping[] getTypeConversions() {
047 Collections.sort(typeMappings, COMPARE_LAST_LOADED_FIRST);
048 return typeMappings.toArray(new TypeMapping[typeMappings.size()]);
049 }
050
051 protected void registerTypeConverter(TypeConverterRegistry registry, Method method, Class toType,
052 Class fromType, TypeConverter typeConverter) {
053
054 TypeMapping mapping = new TypeMapping(toType, fromType, typeConverter.getClass(), method);
055 typeMappings.add(mapping);
056 }
057
058 private static String getTypeName(Class type) {
059 return type != null ? type.getName() : null;
060 }
061
062 /**
063 * Represents a mapping from one type (which can be null) to another
064 */
065 public static class TypeMapping {
066 private static int counter;
067 Class toType;
068 Class fromType;
069 Class converterType;
070 Method method;
071 int index;
072
073 public TypeMapping(Class toType, Class fromType, Class converterType, Method method) {
074 this.toType = toType;
075 this.fromType = fromType;
076 this.converterType = converterType;
077 this.method = method;
078 this.index = counter++;
079 }
080
081 public Class getFromType() {
082 return fromType;
083 }
084
085 public Class getToType() {
086 return toType;
087 }
088
089 public Class getConverterType() {
090 return converterType;
091 }
092
093 public Method getMethod() {
094 return method;
095 }
096
097 public int getIndex() {
098 return index;
099 }
100
101 @Override
102 public boolean equals(Object object) {
103 if (object instanceof TypeMapping) {
104 TypeMapping that = (TypeMapping)object;
105 return this.index == that.index;
106 }
107 return false;
108 }
109
110 @Override
111 public int hashCode() {
112 int answer = toType.hashCode();
113 if (fromType != null) {
114 answer *= 37 + fromType.hashCode();
115 }
116 return answer;
117 }
118
119 @Override
120 public String toString() {
121 return "[" + fromType.getSimpleName() + "=>" + toType.getSimpleName() + "]";
122 }
123 }
124 }