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    
030    /**
031     * @author Franck WOLFF
032     */
033    public class String2CharArray extends Converter {
034    
035        public String2CharArray(Converters converters) {
036            super(converters);
037        }
038    
039        @Override
040            protected boolean internalCanConvert(Object value, Type targetType) {
041            if (targetType instanceof Class<?>) {
042                Class<?> targetClass = (Class<?>)targetType;
043                return (
044                    targetClass.isArray()
045                ) && (
046                    targetClass.getComponentType().equals(Character.TYPE) ||
047                    targetClass.getComponentType().equals(Character.class)
048                ) && (
049                    value == null || value instanceof String
050                );
051            }
052            return false;
053        }
054    
055        @Override
056            protected Object internalConvert(Object value, Type targetType) {
057            if (value == null)
058                return null;
059    
060            Class<?> componentType = ((Class<?>)targetType).getComponentType();
061    
062            if (componentType.equals(Character.TYPE)) // char[]
063                return ((String)value).toCharArray();
064    
065            if (componentType.equals(Character.class)) { // Character[]
066                String s = (String)value;
067                Object array = Array.newInstance(Character.class, s.length());
068                for (int i = 0; i < s.length(); i++)
069                    Array.set(array, i, Character.valueOf(s.charAt(i)));
070                return array;
071            }
072    
073            throw new IllegalConverterArgumentException(this, value, targetType);
074        }
075    }