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.BigDecimal;
024    import java.util.ArrayList;
025    import java.util.Collections;
026    import java.util.List;
027    
028    import org.granite.messaging.service.ServiceException;
029    
030    /**
031     * @author Franck WOLFF
032     */
033    public class BigDecimalInstantiator extends AbstractInstantiator<BigDecimal> {
034    
035            private static final long serialVersionUID = 1L;
036    
037            private static final String VALUE = "value";
038            
039            private static final List<String> orderedFields;
040        static {
041            List<String> of = new ArrayList<String>(1);
042            of.add(VALUE);
043            orderedFields = Collections.unmodifiableList(of);
044        }
045    
046        public BigDecimalInstantiator() {
047        }
048    
049        @Override
050        public List<String> getOrderedFieldNames() {
051            return orderedFields;
052        }
053    
054        @Override
055        public BigDecimal newInstance() {
056            BigDecimal bigDecimal = null;
057    
058            String value = (String)get(VALUE);
059            
060            if (value != null && value.length() <= 2) {
061                    if ("0".equals(value))
062                            bigDecimal = BigDecimal.ZERO;
063                    else if ("1".equals(value))
064                            bigDecimal = BigDecimal.ONE;
065                    else if ("10".equals(value))
066                            bigDecimal = BigDecimal.TEN;
067            }
068            
069            if (bigDecimal == null) try {
070                bigDecimal = new BigDecimal(value);
071            } catch (NumberFormatException e) {
072                throw new ServiceException("Illegal BigDecimal value: " + value, e);
073            }
074    
075            return bigDecimal;
076        }
077    }