Name
xsd:gMonth — Recurring period of time: yearly month
Synopsis
<xsd:simpleType name="gMonth” id="gMonth"> <xsd:restriction base="xsd:anySimpleType"> <xsd:whiteSpace value="collapse” fixed="true"/> </xsd:restriction> </xsd:simpleType>
Derived from
xsd:anySimpleType
Primary
xsd:gMonth
Known subtypes
None
Data parameters (facets)
enumeration
, maxExclusive
,
maxInclusive
, minExclusive
,
minInclusive
, pattern
Description
The value space of xsd:gMonth
is the period of one
calendar month recurring each calendar year (such as the month of
April). Its lexical space should follow the ISO 8601 syntax for such
periods (i.e., -- MM
) with an optional time zone.
Tip
There’s a typo in the W3C XML Schema Recommendation,
in which the format is defined as -- MM -- --
.
Even though an erratum should be published to bring the W3C XML
Schema inline with ISO 8601, most current schema processors expect
the (bogus) -- MM -- -
- format.
In the example, I follow the correct ISO 8601 format.
Restrictions
The period (one year) and the duration (one month) are fixed, and no calendars other than Gregorian are supported.
Because of the typo in the W3C XML Schema Specification, you must choose between a bogus format, which works on the current version of the tools, or a correct format, which conforms to ISO 8601.
Example
Valid values include --05
,
--11Z
, --11+02:00
,
--11-04:00
, and --02
.
The following values are invalid: -01-
(the format
must be --MM
), --13
(the month
is out of range), --1
(both digits must be provided), or ...
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