001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.messaging.amf.io.convert.impl;
023
024 import java.lang.reflect.Array;
025 import java.lang.reflect.Type;
026
027 import org.granite.messaging.amf.io.convert.Converter;
028 import org.granite.messaging.amf.io.convert.Converters;
029 import org.granite.messaging.amf.io.convert.IllegalConverterArgumentException;
030 import org.granite.util.ArrayUtil;
031
032 /**
033 * @author Franck WOLFF
034 */
035 public class Array2Array extends Converter {
036
037 public Array2Array(Converters converters) {
038 super(converters);
039 }
040
041 @Override
042 protected boolean internalCanConvert(Object value, Type targetType) {
043 Type targetComponentType = ArrayUtil.getComponentType(targetType);
044
045 if (targetComponentType == null)
046 return false; // not an array.
047
048 if (value == null)
049 return true;
050
051 if (!value.getClass().isArray())
052 return false;
053
054 Class<?> oComponentClass = value.getClass().getComponentType();
055 if (targetComponentType.equals(oComponentClass))
056 return true;
057
058 Converter itemConverter = null;
059 final int length = Array.getLength(value);
060 for (int i = 0; i < length; i++) {
061 Object item = Array.get(value, i);
062
063 if (itemConverter == null)
064 itemConverter = converters.getConverter(item, targetComponentType);
065 else if (!itemConverter.canConvert(item, targetComponentType))
066 itemConverter = converters.getConverter(item, targetComponentType);
067
068 if (itemConverter == null)
069 return false;
070 }
071
072 return true;
073 }
074
075 @Override
076 protected Object internalConvert(Object value, Type targetType) {
077
078 if (value == null)
079 return null;
080
081 if (value.getClass().isArray()) {
082 Type targetComponentType = ArrayUtil.getComponentType(targetType);
083 if (targetComponentType != null) {
084 Class<?> oComponentClass = value.getClass().getComponentType();
085 if (targetComponentType.equals(oComponentClass))
086 return value;
087
088 Converter itemConverter = null;
089 final int length = Array.getLength(value);
090 final Object array = ArrayUtil.newArray(targetComponentType, length);
091 for (int i = 0; i < length; i++) {
092 Object item = Array.get(value, i);
093
094 if (itemConverter == null)
095 itemConverter = converters.getConverter(item, targetComponentType);
096 else if (!itemConverter.canConvert(item, targetComponentType))
097 itemConverter = converters.getConverter(item, targetComponentType);
098
099 if (itemConverter == null)
100 throw new IllegalConverterArgumentException(this, value, targetType);
101
102 Array.set(array, i, itemConverter.convert(item, targetComponentType));
103 }
104 return array;
105 }
106 }
107
108 throw new IllegalConverterArgumentException(this, value, targetType);
109 }
110 }