Complex template matches?

whelanj · January 5th, 2011, 07:44 PM

I've been trying to find a way to match parent elements that match one or more conditions while only returning unique results. As an example (listed below), how would I write a template match to match all the bookstore elements that contain either 'Harry Potter' or 'Learning XML' and are written in English?

Code:

 
<?xml version="1.0" encoding="ISO-8859-1"?>
<bookstore>
<book
  <title lang="eng">Harry Potter</title>
  <price>29.99</price>
</book>
<book>
  <title lang="eng">Learning XML</title>
  <price>39.95</price>
</book>
</bookstore>

The best I have been able to do is match the titles via the following:

Code:

 
<xsl:template match="//bookstore/book/title[@lang='eng'][text() = 'Harry Potter'] | //bookstore/book/title[@lang='eng'][text() = 'Learning XML']">

While I can traverse this to get to the bookstore, I'll get multiple hits resulting in the same bookstore. What I want to do is match the bookstore. However, it seems beyond me.

samjudson · January 6th, 2011, 04:35 AM

Your match is returning matching titles, not matching bookstores, hence the duplication in your results.

You want something like this:

Code:

<xsl:template match="bookstore[book/title[@lang='eng' and text()='Harry Potter'] or book/title[@lang='eng' and text()='Learning XML']]">