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package org.seasar.cubby.spi.impl; |
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import static org.seasar.cubby.internal.util.LogMessages.format; |
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import java.util.Collection; |
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import java.util.Map; |
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import java.util.TreeMap; |
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import org.seasar.cubby.converter.Converter; |
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import org.seasar.cubby.spi.ConverterProvider; |
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32 | 19 | public abstract class AbstractConverterProvider implements ConverterProvider { |
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protected abstract Collection<Converter> getConverters(); |
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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; |
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} |
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} |
50 | 0 | throw new IllegalArgumentException(format("ECUB0110", converterType)); |
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} |
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public Converter getConverter(final Class<?> parameterType, |
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final Class<?> objectType) { |
58 | 129 | final Class<?> destType = ConversionUtils |
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.getWrapperClassIfPrimitive(objectType); |
60 | 129 | final Converter converter = getDistanceTable(parameterType, destType); |
61 | 129 | return converter; |
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} |
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private Converter getDistanceTable(final Class<?> parameterType, |
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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; |
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} |
71 | 78 | final int distance = getDistance(converter.getObjectType(), |
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objectType); |
73 | 78 | distanceTable.put(distance, converter); |
74 | 78 | } |
75 | 129 | if (distanceTable.isEmpty()) { |
76 | 63 | return null; |
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} |
78 | 66 | return distanceTable.values().iterator().next(); |
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} |
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private int getDistance(final Class<?> assigner, final Class<?> assignee) { |
82 | 78 | return getDistance(assigner, assignee, 0); |
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} |
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private int getDistance(final Class<?> assigner, final Class<?> assignee, |
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final int distance) { |
87 | 90 | if (assignee.equals(assigner)) { |
88 | 62 | return distance; |
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} |
90 | 28 | if (Enum.class.equals(assigner) && assignee.isEnum()) { |
91 | 4 | return distance + 5; |
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} |
93 | 24 | if (isImplements(assigner, assignee)) { |
94 | 0 | return distance + 5; |
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} |
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97 | 24 | final Class<?> superClass = assigner.getSuperclass(); |
98 | 24 | if (superClass == null) { |
99 | 12 | return distance + 10; |
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} |
101 | 12 | return getDistance(superClass, assignee, distance + 10); |
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} |
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private boolean isImplements(final Class<?> assigner, |
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final Class<?> assignee) { |
106 | 24 | return !assigner.isInterface() && assignee.isInterface() |
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&& assignee.isAssignableFrom(assigner); |
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} |
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} |