1 /* DecimalType.java --
2    Copyright (C) 2006  Free Software Foundation, Inc.
3 
4 This file is part of GNU Classpath.
5 
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10 
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING.  If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library.  Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25 
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module.  An independent module is a module which is not derived from
33 or based on this library.  If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so.  If you do not wish to do so, delete this
36 exception statement from your version. */
37 
38 package gnu.xml.validation.datatype;
39 
40 import java.math.BigDecimal;
41 import javax.xml.XMLConstants;
42 import javax.xml.namespace.QName;
43 import org.relaxng.datatype.DatatypeException;
44 import org.relaxng.datatype.ValidationContext;
45 
46 /**
47  * The XML Schema decimal type.
48  *
49  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
50  */
51 final class DecimalType
52   extends AtomicSimpleType
53 {
54 
55   static final int[] CONSTRAINING_FACETS = {
56     Facet.TOTAL_DIGITS,
57     Facet.FRACTION_DIGITS,
58     Facet.PATTERN,
59     Facet.WHITESPACE,
60     Facet.ENUMERATION,
61     Facet.MAX_INCLUSIVE,
62     Facet.MAX_EXCLUSIVE,
63     Facet.MIN_INCLUSIVE,
64     Facet.MIN_EXCLUSIVE
65   };
66 
DecimalType()67   DecimalType()
68   {
69     super(new QName(XMLConstants.W3C_XML_SCHEMA_NS_URI, "decimal"),
70           TypeLibrary.ANY_SIMPLE_TYPE);
71   }
72 
getConstrainingFacets()73   public int[] getConstrainingFacets()
74   {
75     return CONSTRAINING_FACETS;
76   }
77 
checkValid(String value, ValidationContext context)78   public void checkValid(String value, ValidationContext context)
79     throws DatatypeException
80   {
81     super.checkValid(value, context);
82     int len = value.length();
83     if (len == 0)
84       throw new DatatypeException("invalid decimal value");
85     boolean seenDot = false;
86     for (int i = 0; i < len; i++)
87       {
88         char c = value.charAt(i);
89         if (c >= 0x30 && c <= 0x39)
90           continue;
91         else if (c == '.')
92           {
93             if (seenDot)
94               throw new DatatypeException(i, "invalid decimal value");
95             seenDot = true;
96             continue;
97           }
98         else if (c == '+' && i == 0)
99           continue;
100         else if (c == '-' && i == 0)
101           continue;
102         else
103           throw new DatatypeException(i, "invalid decimal value");
104       }
105   }
106 
createValue(String literal, ValidationContext context)107   public Object createValue(String literal, ValidationContext context) {
108     try
109       {
110         return new BigDecimal(literal);
111       }
112     catch (NumberFormatException e)
113       {
114         return null;
115       }
116   }
117 
118 }
119