Coverage Report - org.seasar.cubby.spi.impl.AbstractConverterProvider
 
Classes in this File Line Coverage Branch Coverage Complexity
AbstractConverterProvider
93%
28/30
73%
19/26
3.714
 
 1  
 /*
 2  
  * Copyright 2004-2009 the Seasar Foundation and the Others.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *     http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 13  
  * either express or implied. See the License for the specific language
 14  
  * governing permissions and limitations under the License.
 15  
  */
 16  
 package org.seasar.cubby.spi.impl;
 17  
 
 18  
 import static org.seasar.cubby.internal.util.LogMessages.format;
 19  
 
 20  
 import java.util.Collection;
 21  
 import java.util.Map;
 22  
 import java.util.TreeMap;
 23  
 
 24  
 import org.seasar.cubby.converter.Converter;
 25  
 import org.seasar.cubby.spi.ConverterProvider;
 26  
 
 27  
 /**
 28  
  * コンバータプロバイダのスケルトン実装です。
 29  
  * 
 30  
  * @author baba
 31  
  */
 32  19
 public abstract class AbstractConverterProvider implements ConverterProvider {
 33  
 
 34  
         /**
 35  
          * コンバータの一覧を返します。
 36  
          * 
 37  
          * @return コンバータの一覧
 38  
          */
 39  
         protected abstract Collection<Converter> getConverters();
 40  
 
 41  
         /**
 42  
          * {@inheritDoc}
 43  
          */
 44  
         public Converter getConverter(final Class<? extends Converter> converterType) {
 45  6
                 for (final Converter converter : getConverters()) {
 46  108
                         if (converterType.isAssignableFrom(converter.getClass())) {
 47  6
                                 return converter;
 48  
                         }
 49  
                 }
 50  0
                 throw new IllegalArgumentException(format("ECUB0110", converterType));
 51  
         }
 52  
 
 53  
         /**
 54  
          * {@inheritDoc}
 55  
          */
 56  
         public Converter getConverter(final Class<?> parameterType,
 57  
                         final Class<?> objectType) {
 58  129
                 final Class<?> destType = ConversionUtils
 59  
                                 .getWrapperClassIfPrimitive(objectType);
 60  129
                 final Converter converter = getDistanceTable(parameterType, destType);
 61  129
                 return converter;
 62  
         }
 63  
 
 64  
         private Converter getDistanceTable(final Class<?> parameterType,
 65  
                         final Class<?> objectType) {
 66  129
                 final Map<Integer, Converter> distanceTable = new TreeMap<Integer, Converter>();
 67  129
                 for (final Converter converter : getConverters()) {
 68  2320
                         if (!converter.canConvert(parameterType, objectType)) {
 69  2242
                                 continue;
 70  
                         }
 71  78
                         final int distance = getDistance(converter.getObjectType(),
 72  
                                         objectType);
 73  78
                         distanceTable.put(distance, converter);
 74  78
                 }
 75  129
                 if (distanceTable.isEmpty()) {
 76  63
                         return null;
 77  
                 }
 78  66
                 return distanceTable.values().iterator().next();
 79  
         }
 80  
 
 81  
         private int getDistance(final Class<?> assigner, final Class<?> assignee) {
 82  78
                 return getDistance(assigner, assignee, 0);
 83  
         }
 84  
 
 85  
         private int getDistance(final Class<?> assigner, final Class<?> assignee,
 86  
                         final int distance) {
 87  90
                 if (assignee.equals(assigner)) {
 88  62
                         return distance;
 89  
                 }
 90  28
                 if (Enum.class.equals(assigner) && assignee.isEnum()) {
 91  4
                         return distance + 5;
 92  
                 }
 93  24
                 if (isImplements(assigner, assignee)) {
 94  0
                         return distance + 5;
 95  
                 }
 96  
 
 97  24
                 final Class<?> superClass = assigner.getSuperclass();
 98  24
                 if (superClass == null) {
 99  12
                         return distance + 10;
 100  
                 }
 101  12
                 return getDistance(superClass, assignee, distance + 10);
 102  
         }
 103  
 
 104  
         private boolean isImplements(final Class<?> assigner,
 105  
                         final Class<?> assignee) {
 106  24
                 return !assigner.isInterface() && assignee.isInterface()
 107  
                                 && assignee.isAssignableFrom(assigner);
 108  
         }
 109  
 
 110  
 }