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    
031    /**
032     * @author Franck WOLFF
033     */
034    public class String2CharArray extends Converter {
035    
036        public String2CharArray(Converters converters) {
037            super(converters);
038        }
039    
040        @Override
041            protected boolean internalCanConvert(Object value, Type targetType) {
042            if (targetType instanceof Class<?>) {
043                Class<?> targetClass = (Class<?>)targetType;
044                return (
045                    targetClass.isArray()
046                ) && (
047                    targetClass.getComponentType().equals(Character.TYPE) ||
048                    targetClass.getComponentType().equals(Character.class)
049                ) && (
050                    value == null || value instanceof String
051                );
052            }
053            return false;
054        }
055    
056        @Override
057            protected Object internalConvert(Object value, Type targetType) {
058            if (value == null)
059                return null;
060    
061            Class<?> componentType = ((Class<?>)targetType).getComponentType();
062    
063            if (componentType.equals(Character.TYPE)) // char[]
064                return ((String)value).toCharArray();
065    
066            if (componentType.equals(Character.class)) { // Character[]
067                String s = (String)value;
068                Object array = Array.newInstance(Character.class, s.length());
069                for (int i = 0; i < s.length(); i++)
070                    Array.set(array, i, Character.valueOf(s.charAt(i)));
071                return array;
072            }
073    
074            throw new IllegalConverterArgumentException(this, value, targetType);
075        }
076    }