As I understand it, I can set the value of a variable in two ways:
1. By the "select" attribute of the <variable> element:
<xsl:variable name="myvariable" select="'myvalue'"/>
2. By the contents of the <variable> element:
<xsl:variable name="myvariable">
My value
</xsl:variable>
Which have completely different effects. In the first case, the value of the
variable is a string. In the second it is a tree of nodes: a document node,
with a text node child containing the string "My value" (plus surrounding
whitespace). Incidentally the second form can be dramatically slower than
the first.
But how do I set the variable using the second method?
In XSLT 1.0 you can't.
In XSLT 2.0 you could use
<xsl:variable name="x" as="node()">
<xsl:sequence select="..."/>
</xsl:variable>
The reason I need to do this is because I want to set the
variable 'usethis'
to the result of a <choose> element which (as far as I know)
I cannot include in a "select" attribute.
Yes, in XSLT 1.0 this is a problem. Sometimes a workaround is to use
<xsl:variable select="expr1[condition] | expr2[not(condition)]"/>
which is equivalent to the XSLT 2.0
<xsl:variable select="if (condition) then expr1 else expr2"/>
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
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