Subject: [xsl] newbie - parameters with/without values?? From: "Hardy Merrill" <HMerrill@xxxxxxxxxxxxxxxx> Date: Mon, 04 Oct 2004 11:10:03 -0400 |
XSLT newbie alert. I have an xml document with lots of nodes. I have some fields (each with its own value) I'd like to use as "search" criteria - normally I would pass the field values into the XSL style sheet as parameters, and just reference the parameters. But the kicker here is that the parameters may *** or may not *** have values. If a parameter has a value, I want to include it in an XPath select. If a parameter does NOT have a value, then I don't want to include that parameter in the XPath select. I've been trying to use variables to "build" an XPath expression from the supplied parameters using "if test"s, but I'm not having much luck since variables can only be given a value once, and their scope is limited to the block in which they are declared. Given this XML document: <my_document> <person> <name>Joe</name> <gender>Male</gender> <city>Boston</city> </person> <person> <name>Janice</name> <gender>Female</gender> <city>Denver</city> </person> </my_document> can I build an XSL style sheet to take in parameters "gender" and "city", which may or may not have values, and *build* an XPath select expression that will find the right nodes? I'm sure this is a trivial question, but being a newbie I'm having trouble with it. TIA. Hardy Merrill
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