Subject: [xsl] xtvd grouping problem (I think) From: "Bob Portnell" <simply.bobp@xxxxxxxxx> Date: Fri, 8 Sep 2006 13:41:50 -0700 |
I don't have the XSLT vocabulary for this, so I'll try to explain it in English as best I can. Where I'm insufficiently clear about the data, one could look at http://tmsdatadirect.com/docs/tv/ for the XTVD schema or a sample file.
My project takes an xtvd data file as input and 'filters' it against desired items in an XML 'watch list' of goodies I want to see but don't have to want to page through the magazine or newspaper supplements to find. It's doing this very well presently, with one small snag: I'd like items matching in each "search item" to report out in time order. It's almost doing this, but not quite. Let me explain a little deeper:
Each <program> has its own @id. A <program> will air at least once, and possibly several times, so there will be at least one <schedule> (and maybe more) which cite that program's @id (as its @program attribute). Each <schedule> also has an @time and @duration.
The XSLT presently does this: for each search item find the set of programs which have that item for each program in the set sort by time report the pertinent show information.
The catch is that each <program> item represents a different "episode" in a series. So by the time I get down to reporting... well, it's not putting them all in time-order, but it is getting multiple broadcasts of a single episode in time-order correctly. I think what I need is...
for each search item find the set of programs which have that item convert this to the set of schedule items which have those programs for each in the schedule set sort by time report the show information.
Whew! Thanks for bearing with me through all this discussion. I can now ask my question.
Given a variable $progSet which has a bunch of <programs> in it, how do I define a $schedSet which has only <schedule> items containing @program ids from $progSet?
I've gotten as far as <xsl:variable name="schedSet" select="//schedule[@program . . {sound of screeching brakes}? />
Please excuse where I've strayed from proper XSLT vocabulary; I hope my intent is clear enough despite such lapses of inexperience.
Bob Portnell simply.bobp@xxxxxxxxx
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