I very often testing for element nodes that have character content with
*[string-length(normalize-space(.))>0]
No need to work out the length (which can be surprisingly costly for
general unicode strings) you can just do
*[normalize-space(.)]
as the predicate is true if teh string is non empty. (Although I have a
feeling saxon for example does that rewrite for you anyway, so it may
make no difference.)
<xsl:text>
You haven't specified a return type for ypur fuction but if it's
intended to be a string declaring it as as="xs:string" and using
<xsl:sequence select="'sozial'"/> rather than
<xsl:text>sozial</xsl:text>
saves the cost of building a text node.
<xsl:function name="ln:getCaseType" as="xs:string>
<xsl:param name="case" as="element()"/>
<xsl:choose>
<xsl:when test="matches(.,'^[LB]?SG')">
<xsl:sequence select="'sozial'"/>
</xsl:when>
<xsl:when test="matches(.,'^[LB]?A(rb)?G')">
<xsl:sequence select="'arbeit'"/>
</xsl:when>
Those regex are a bit more lax than your tests but they need not be.
David
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