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.util.instantiator;
022    
023    import java.math.MathContext;
024    import java.math.RoundingMode;
025    import java.util.ArrayList;
026    import java.util.Collections;
027    import java.util.List;
028    
029    /**
030     * @author Franck WOLFF
031     */
032    public class MathContextInstantiator extends AbstractInstantiator<MathContext> {
033    
034            private static final long serialVersionUID = 1L;
035    
036            private static final String PRECISION = "precision";
037            private static final String ROUNDING_MODE = "roundingMode";
038            
039            private static final List<String> orderedFields;
040        static {
041            List<String> of = new ArrayList<String>(1);
042            of.add(PRECISION);
043            of.add(ROUNDING_MODE);
044            orderedFields = Collections.unmodifiableList(of);
045        }
046    
047        public MathContextInstantiator() {
048        }
049    
050        @Override
051        public List<String> getOrderedFieldNames() {
052            return orderedFields;
053        }
054    
055        @Override
056        public MathContext newInstance() {
057            int precision = ((Integer)get(PRECISION)).intValue();
058            RoundingMode roundingMode = (RoundingMode)get(ROUNDING_MODE);
059    
060            return new MathContext(precision, roundingMode);
061        }
062    }