Construct an NCName value from an item value.
xs:NCName(item $value) => NCName
This is a constructor function that takes an item value as argument and
returns a value of type xs:NCName. If the argument is a string
literal, then the literal must be a valid lexical form of its type.
As specified in the respective section of the W3C recommendation
XML
Schema Part 2: Datatypes, a value of type xs:NCName
denotes a "non-colonized" XML name, as defined in the
XML
1.0 recommendation. It is derived from the type xs:Name
and the lexical form of xs:Name is the set of all strings that
match the production of Name. Practically, a value of type
xs:NCName is the same as of type xs:Name with the
only exception that it may not contain a colon.
| $value |
item value |
|---|
The following queries generate valid values of type
xs:NCName
xs:NCName("_header")
xs:NCName("R2D2")
The following queries generate invalid values:
xs:NCName("-header")
xs:NCName("R2D2:C3PO")
The following construct(s) refer to this construct: