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
021package org.granite.messaging.amf.io.util.instantiator;
022
023import java.math.BigDecimal;
024import java.util.ArrayList;
025import java.util.Collections;
026import java.util.List;
027
028import org.granite.messaging.service.ServiceException;
029
030/**
031 * @author Franck WOLFF
032 */
033public 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}