001 /*
002 GRANITE DATA SERVICES
003 Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005 This file is part of Granite Data Services.
006
007 Granite Data Services is free software; you can redistribute it and/or modify
008 it under the terms of the GNU Library General Public License as published by
009 the Free Software Foundation; either version 2 of the License, or (at your
010 option) any later version.
011
012 Granite Data Services is distributed in the hope that it will be useful, but
013 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015 for more details.
016
017 You should have received a copy of the GNU Library General Public License
018 along with this library; if not, see <http://www.gnu.org/licenses/>.
019 */
020
021 package org.granite.messaging.amf.io.convert.impl;
022
023 import java.lang.reflect.Array;
024 import java.lang.reflect.Type;
025
026 import org.granite.messaging.amf.io.convert.Converter;
027 import org.granite.messaging.amf.io.convert.Converters;
028 import org.granite.messaging.amf.io.convert.IllegalConverterArgumentException;
029 import org.granite.util.ArrayUtil;
030
031 /**
032 * @author Franck WOLFF
033 */
034 public class Array2Array extends Converter {
035
036 public Array2Array(Converters converters) {
037 super(converters);
038 }
039
040 @Override
041 protected boolean internalCanConvert(Object value, Type targetType) {
042 Type targetComponentType = ArrayUtil.getComponentType(targetType);
043
044 if (targetComponentType == null)
045 return false; // not an array.
046
047 if (value == null)
048 return true;
049
050 if (!value.getClass().isArray())
051 return false;
052
053 Class<?> oComponentClass = value.getClass().getComponentType();
054 if (targetComponentType.equals(oComponentClass))
055 return true;
056
057 Converter itemConverter = null;
058 final int length = Array.getLength(value);
059 for (int i = 0; i < length; i++) {
060 Object item = Array.get(value, i);
061
062 if (itemConverter == null)
063 itemConverter = converters.getConverter(item, targetComponentType);
064 else if (!itemConverter.canConvert(item, targetComponentType))
065 itemConverter = converters.getConverter(item, targetComponentType);
066
067 if (itemConverter == null)
068 return false;
069 }
070
071 return true;
072 }
073
074 @Override
075 protected Object internalConvert(Object value, Type targetType) {
076
077 if (value == null)
078 return null;
079
080 if (value.getClass().isArray()) {
081 Type targetComponentType = ArrayUtil.getComponentType(targetType);
082 if (targetComponentType != null) {
083 Class<?> oComponentClass = value.getClass().getComponentType();
084 if (targetComponentType.equals(oComponentClass))
085 return value;
086
087 Converter itemConverter = null;
088 final int length = Array.getLength(value);
089 final Object array = ArrayUtil.newArray(targetComponentType, length);
090 for (int i = 0; i < length; i++) {
091 Object item = Array.get(value, i);
092
093 if (itemConverter == null)
094 itemConverter = converters.getConverter(item, targetComponentType);
095 else if (!itemConverter.canConvert(item, targetComponentType))
096 itemConverter = converters.getConverter(item, targetComponentType);
097
098 if (itemConverter == null)
099 throw new IllegalConverterArgumentException(this, value, targetType);
100
101 Array.set(array, i, itemConverter.convert(item, targetComponentType));
102 }
103 return array;
104 }
105 }
106
107 throw new IllegalConverterArgumentException(this, value, targetType);
108 }
109 }