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XML Schema
book

XML Schema

by Eric van der Vlist
June 2002
Intermediate to advanced content levelIntermediate to advanced
396 pages
11h 8m
English
O'Reilly Media, Inc.
Content preview from XML Schema

Name

xs:fractionDigits — Facet to define the number of fractional digits of a numerical datatype.

Synopsis

<xs:fractionDigits
           fixed          = xs:boolean : “false”
           id             = xs:ID
           value          = xs:nonNegativeInteger
           {any attributes with non-schema namespace}
           >
           Content: (xs:annotation?)
</xs:fractionDigits>

May be included in: xs:restriction (simple type), xs:restriction (simple content)

May be used as facet for: xs:decimal

Description

xs:fractionDigits defines the maximum number of fractional digits (i.e., digits that are after the decimal point) of an xs:decimal datatype.

This facet constrains the value space, which means that the number of fractional digits is checked after the value is transformed to its canonical form, and the trailing zeros are removed.

Restrictions

Within a restriction step, xs:fractionDigits is dependent on xs:totalDigits, since using inconsistent values leads to datatypes with empty value spaces.

xs:fractionDigits must restrict the value space of its base type, and its value must be smaller than the value of xs:fractionDigits of its base type if defined.

It is possible to use xs:pattern to constrain the number of fractional digits in the lexical space.

Example

<xs:simpleType name="fractionDigits">
  <xs:restriction base="xs:decimal">
    <xs:fractionDigits value="2"/>
  </xs:restriction>
</xs:simpleType>

Attributes

fixed

When set to true, the value of the facet cannot be modified during further restrictions.

id

W3C XML Schema’s element ID.

value

Value of the facet.

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Publisher Resources

ISBN: 0596002521Supplemental ContentErrata Page