Karl Stubsjoen wrote:
I am performing a CHOOSE | WHERE | OTHERWISE
when, not where :)
... the test for this choose is
to see whether or not my @AvailableInventory is '' (empty). It doesn't seem
to work, but indeed there is no real value in this attribute. I'm thinking
it is padded with spaces. So how would I perform my test, but trim all the
spaces... or is there another test for "Empty"?
Here what I have so far:
<xsl:when test="@availableInventory=''">
Use
<xsl:when test="normalize-space(@availableInventory)">
The normalize-space function will produce a string with leading and trailing
whitespace removed, and adjacent embedded whitespace collapsed to a single
space. A string will test false if it is completely empty (zero length).
You could also use string(@availableInventory) if you don't need to strip
whitespace.
You probably noticed that test="@availableInventory" was always true when
there was an availableInventory attribute; this is testing a node-set to see
if it has any nodes in it.
Mike
--
Mike J. Brown | http://skew.org/~mike/resume/
Denver, CO, USA | http://skew.org/xml/
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