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 */
022package org.granite.messaging.amf.io.convert.impl;
023
024import java.lang.reflect.Type;
025
026import org.granite.messaging.amf.io.convert.Converter;
027import org.granite.messaging.amf.io.convert.Converters;
028
029/**
030 * @author Franck WOLFF
031 */
032public class Number2Long extends Converter {
033
034    private static final Long ZERO = Long.valueOf(0L);
035
036    public Number2Long(Converters converters) {
037        super(converters);
038    }
039
040    @Override
041        protected boolean internalCanConvert(Object value, Type targetType) {
042        return
043            (targetType.equals(Long.class) || targetType.equals(Long.TYPE)) &&
044            (value == null || value instanceof Number);
045    }
046
047    @Override
048        protected Object internalConvert(Object value, Type targetType) {
049        if (value == null)
050            return (targetType.equals(Long.TYPE) ? ZERO : null);
051        return Long.valueOf(((Number)value).longValue());
052    }
053}