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.Type;
024    
025    import org.granite.messaging.amf.io.convert.Converter;
026    import org.granite.messaging.amf.io.convert.Converters;
027    
028    /**
029     * @author Franck WOLFF
030     */
031    public class Number2Short extends Converter {
032    
033        private static final Short ZERO = Short.valueOf((short)0);
034    
035        public Number2Short(Converters converters) {
036            super(converters);
037        }
038    
039        @Override
040            protected boolean internalCanConvert(Object value, Type targetType) {
041            return
042                (targetType == Short.class || targetType == Short.TYPE) &&
043                (value == null || value instanceof Number);
044        }
045    
046        @Override
047            protected Object internalConvert(Object value, Type targetType) {
048            if (value == null)
049                return (targetType.equals(Short.TYPE) ? ZERO : null);
050            return Short.valueOf(((Number)value).shortValue());
051        }
052    }