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Re: [xsl] getting the last value of a nodeset
Subject: Re: [xsl] getting the last value of a nodeset
From: James Fuller <jim.fuller@xxxxxxxxxxxxxx>
Date: Sun, 06 Feb 2005 13:51:14 +0100
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Prasad Akella wrote:
hi,
i would like to get the last value of an xpath expression like for example
<xforms:bind nodeset="/Exam/ExamMetaData/Title"/>
in this i would like to take the value of the attribute xforms:bind/@nodeset and traverse it to get the value of Title
I would reiterate your question.....you want the value of the xpath
expression /Exam/ExamMetaData/Title (not the last value...or segment of
xpath statement....sorry being a bit pedantic)....the well known problem
here is dynamically evaluating strings as XPATH statements......in other
words you want to put your @nodeset attribute into a string
variable...then use the string variable as input of a select statement....
I would suggest looking at;
http://www.exslt.org/dyn/functions/evaluate/index.html
note: most processors, and saxon has some equivelent eval type function
for you to use
the only thing to be slightly careful with is if you are using
document() calls and extra namespaces (like xforms)..first make sure you
are dynamically selecting properly with whatever processor function call,
something like the following (with saxon namespace being prop declared)
would be an example of doing this with saxon;
<xsl:variable name="var" select="/rootelement/xforms:bind/@nodeset"/>
<xsl:value-of select="saxon:evaluate($var)"/>
note this is untested!
gl, Jim Fuller
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