- From: Jeni Tennison <jeni@jenitennison.com>
- Date: Tue, 16 Apr 2002 10:35:20 +0100
- To: "Sridhar Raju Y" <sridhar_y@infy.com>
- CC: xmlschema-dev@w3.org
Hi Sridhar, > I am unable to understand the pattern mentioned in xml schema file. > > <xsd:pattern value="[\i-[:]][\c-[:]]*:[\i-[:]][\c-[:]]*(@start|@end)"/> > > The above one is the pattern specified in schema file . I'ld like to > know how it looks like in instance document. The pattern [\i-[:]] means "any character that can be the initial character of an XML name, except a colon" and the pattern [\c-[:]] means "any character that can be a character within an XML name, except a colon". Put them together as [\i-[:]][\c-[:]]* and you have "any XML name, without a colon in it", in other words an xs:NCName (non-colonised name) such as: foo _bar The start of your pattern has a xs:NCName, followed by a colon, followed by an xs:NCName. Together, that makes a qualified name (xs:QName), so something like: foo:_bar After this qualified name, you have a choice between two patterns. The @ isn't significant in a regular expression, so the two strings are literally "@start" or "@end". So a matching string for the entire pattern might look like: foo:_bar@start or: xs:string@end or: xsl:value-of@start or anything that's a qualified name immediately followed by either '@start' or '@end'. Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/
Received on Tuesday, 16 April 2002 05:35:22 UTC