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.util.instantiator;
023    
024    import java.math.MathContext;
025    import java.math.RoundingMode;
026    import java.util.ArrayList;
027    import java.util.Collections;
028    import java.util.List;
029    
030    /**
031     * @author Franck WOLFF
032     */
033    public class MathContextInstantiator extends AbstractInstantiator<MathContext> {
034    
035            private static final long serialVersionUID = 1L;
036    
037            private static final String PRECISION = "precision";
038            private static final String ROUNDING_MODE = "roundingMode";
039            
040            private static final List<String> orderedFields;
041        static {
042            List<String> of = new ArrayList<String>(1);
043            of.add(PRECISION);
044            of.add(ROUNDING_MODE);
045            orderedFields = Collections.unmodifiableList(of);
046        }
047    
048        public MathContextInstantiator() {
049        }
050    
051        @Override
052        public List<String> getOrderedFieldNames() {
053            return orderedFields;
054        }
055    
056        @Override
057        public MathContext newInstance() {
058            int precision = ((Integer)get(PRECISION)).intValue();
059            RoundingMode roundingMode = (RoundingMode)get(ROUNDING_MODE);
060    
061            return new MathContext(precision, roundingMode);
062        }
063    }