strong typed variable with restriction ?
I have a xsl:function which : - must return a element() - has a string param "foobar".
I typed $foobar as xs:string but I'd like to restrict the possible values to "foo" or "bar".
I know it's possible to define such a constrain in a xsd schema, but is there a way to do that in xpath2 ?
This typing is important because the returned element() is selected from a xsl:choose on $foobar value (with no otherwise) :
My code looks like : <xsl:function name="igs:get-css-rule" as="element()"> <xsl:param name="foobar" as="xs:string"/> <!--(foo|bar)--> <xsl:choose> <xsl:when test="$foobar='foo'"> <xsl:sequence select="igs:get-my-foo-item()"/> </xsl:when> <xsl:when test="$css='bar'"> <xsl:sequence select="igs:get-my-bar-item()"/> </xsl:when> </xsl:choose> </xsl:function>
And I get such a parsing error on my xslt :
XTTE0570: Conditional expression: If none of the conditions is satisfied, an empty
sequence will be returned, but this is not allowed [...]
Should I import my own schema to my xsl to define my special type derived from xs:string ?
Thanks for your advices,
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