libjava/classpath/gnu/xml/validation/datatype/DecimalType.java

   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 java.util.Collections;
  42 import java.util.Set;
  43 import javax.xml.XMLConstants;
  44 import javax.xml.namespace.QName;
  45 import org.relaxng.datatype.DatatypeException;
  46 import org.relaxng.datatype.ValidationContext;
  47
  48 /**
  49  * The XML Schema decimal type.
  50  *
  51  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  52  */
  53 final class DecimalType
  54   extends AtomicSimpleType
  55 {
  56
  57   static final int[] CONSTRAINING_FACETS = {
  58     Facet.TOTAL_DIGITS,
  59     Facet.FRACTION_DIGITS,
  60     Facet.PATTERN,
  61     Facet.WHITESPACE,
  62     Facet.ENUMERATION,
  63     Facet.MAX_INCLUSIVE,
  64     Facet.MAX_EXCLUSIVE,
  65     Facet.MIN_INCLUSIVE,
  66     Facet.MIN_EXCLUSIVE
  67   };
  68
  69   DecimalType()
  70   {
  71     super(new QName(XMLConstants.W3C_XML_SCHEMA_NS_URI, "decimal"),
  72           TypeLibrary.ANY_SIMPLE_TYPE);
  73   }
  74
  75   public int[] getConstrainingFacets()
  76   {
  77     return CONSTRAINING_FACETS;
  78   }
  79
  80   public void checkValid(String value, ValidationContext context)
  81     throws DatatypeException
  82   {
  83     super.checkValid(value, context);
  84     int len = value.length();
  85     if (len == 0)
  86       throw new DatatypeException("invalid decimal value");
  87     boolean seenDot = false;
  88     for (int i = 0; i < len; i++)
  89       {
  90         char c = value.charAt(i);
  91         if (c >= 0x30 && c <= 0x39)
  92           continue;
  93         else if (c == '.')
  94           {
  95             if (seenDot)
  96               throw new DatatypeException(i, "invalid decimal value");
  97             seenDot = true;
  98             continue;
  99           }
 100         else if (c == '+' && i == 0)
 101           continue;
 102         else if (c == '-' && i == 0)
 103           continue;
 104         else
 105           throw new DatatypeException(i, "invalid decimal value");
 106       }
 107   }
 108
 109   public Object createValue(String literal, ValidationContext context) {
 110     try
 111       {
 112         return new BigDecimal(literal);
 113       }
 114     catch (NumberFormatException e)
 115       {
 116         return null;
 117       }
 118   }
 119
 120 }
 121