RELAX NG by Eric van der Vlist will be published by O'Reilly & Associates (ISBN: 0596004214)
You are welcome to use our annotation system to give your feedback.
xsd:date — Gregorian calendar date.
xsd:anySimpleType
xsd:date
none
enumeration, maxExclusive, maxInclusive, minExclusive, minInclusive, pattern.
<xsd:simpleType name="date" id="date">
<xsd:restriction base="xsd:anySimpleType">
<xsd:whiteSpace value="collapse" fixed="true"/>
</xsd:restriction>
</xsd:simpleType>
|
This datatype is modeled after the calendar dates defined in Chapter 5.2.1 of ISO (International Organization for Standardization) 8601. Its value space is the set of Gregorian calendar dates as defined by this standard; i.e., a one-day-long period of time. Its lexical space is the ISO 8601 extended format "[-]CCYY-MM-DD[Z|(+|-)hh:mm]" with an optional timezone. Timezones that are not specified are considered undetermined.
The basic format of ISO 8601 calendar dates "CCYYMMDD" is not supported.
The other forms of dates available in ISO 8601—ordinal dates defined by the year and the number of the day in the year and dates identified by calendar week and day numbers—are not supported.
As the value space is defined by reference to ISO 8601, there is no support for any calendar system other than Gregorian.
Since the lexical space is also defined using a reference to ISO 8601, there is no support for any localization such as different orders for date parts or named months.
The order relation between dates with and without timezone is partial: they can be compared beyond a +/- 14 hour interval.
There is a difference between ISO 8601, which defines a day as a 24 hour period of time, and W3C XML Schema, which indicates that a date is a "one-day long, non-periodic instance . . . independent of how many hours this day has." Even though technically correct, some days do not last exactly 24 hours because of leap seconds, this definition does not concur with the definition of xsd:duration which states that a day is always exactly 24 hours long.
Valid values include: "2001-10-26", "2001-10-26+02:00", "2001-10-26Z", "2001-10-26+00:00", "-2001-10-26", or "-20000-04-01".
The following values would be invalid: "2001-10" (all the parts must be specified), "2001-10-32" (the days part (32) is out of range), "2001-13-26+02:00" (the month part (13) is out of range), or "01-10-26" (the century part is missing).
You are welcome to use our annotation system to give your feedback.
[Annotations for this page]
All text is copyright Eric van der Vlist, Dyomedea. During development, I give permission for non-commercial copying for educational and review purposes. After publication, all text will be released under the Free Software Foundation GFDL.