Subject: [xsl] more elegant way to process element with default value? From: "Lars Huttar" <lars_huttar@xxxxxxx> Date: Fri, 13 Jun 2003 13:49:12 -0500 |
Hi all, I'm trying to set a (global) variable from a global-settings/setting element in my source XML document, but I want this variable to have a default value if the desired <setting> element doesn't exist. E.g. my XML source: <llcd:llc-display> <llcd:global-settings> <llcd:setting name="number-rows">false</setting> ... </llcd:global-settings> ... </llcd:llc-display> I want to set a number-rows variable in my stylesheet to /*/global-settings/setting[@name='number-rows'] but I want the variable to contain 'true' if such a <setting> node doesn't exist in the input document. I'm doing it like this so far: <xsl:variable name="number-rows"> <xsl:variable name="tmp" select="/*/llcd:global-settings/llcd:setting[@name = 'number-rows']" /> <xsl:choose> <xsl:when test="$tmp"><xsl:value-of select="$tmp" /></xsl:when> <xsl:otherwise><xsl:value-of select="'true'" /></xsl:otherwise> </xsl:choose> </xsl:variable> But that seems pretty verbose. And it will be worse as I have multiple settings variables with various names. Is there a more elegant way? (You may ask why I don't put the value 'true' in an attribute and just set a default for it in the DTD. The reason is that some settings will have values that must be arbitrary text, and my understanding is that certain kinds of character data cannot be stored in attribute values, since they are CDATA not PCDATA. Am I mistaken about this?) Thanks, Lars XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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