Subject: RE: [xsl] how do you determine if a property exists? From: <Jarno.Elovirta@xxxxxxxxx> Date: Thu, 15 Apr 2004 11:13:04 +0300 |
Hi, > > You seem to be testing if the string value of an > > attribute is an empty string. Either like already > > have, or if you want to test if the attribute > > exists, then simply > > > > <xsl:when test="@Predecessors"> > > Yes, what I am wanting to do is to have an attribute > in the output document called parent_id. This > attribute should have the value of the @Predecessors > attribute in the source document. If the > @Predecessors attribute has the value of an empty > string, then I want parent_id="1". Similarly, if > there is no @Predecessors attribute in the source > document, I want the parent_id attribute to be > parent_id="1". Then test <xsl:if test="@Predecessors = ''"> or e.g. <xsl:if test="string-length(normalize-space(@Predecessors)) = 0"> I suggest reading the XPath spec at <http://www.w3.org/TR/xpath.html#booleans>. Cheers, Jarno
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