Re: [xsl] SETS comparison..?

[Jeni Tennison <jeni@xxxxxxxxxxxxxxxx>]

Hi Martijn,

> Is it possible to group values not having to repeat the same
> attribute over and over?
>
> e.g.: <xsl:if test=". in ['a', 'b', 'd']">

In XPath 1.0, you have to do:

  . = 'a' or . = 'b' or . = 'd'

Another option is to create a node set containing the values that
you're interested in, and use the existential semantics of = to do the
test. So if you have $values be set to a node set that contains the
following elements:

  <value>a</value>
  <value>b</value>
  <value>d</value>

then you can just do:

  . = $values

Creating the node set is a little tricky - you can put the XML in a
separate document or embed it in the stylesheet, and use the
document() function to access it; or you can create a variable holding
a result tree fragment with those value elements in it, and then
convert that to a node set with a implementation-specific node-set()
extension function.

---

This all becomes a lot easier in XPath 2.0. With XPath 2.0, you just
do:

  . = ('a', 'b', 'd')

and there you have it.

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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