groupi-by statements?

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Subject: groupi-by statements?
From: Bruce D'Arcus <bdarcus@xxxxxxxxxxxxx>
Date: Wed, 18 Aug 2004 11:39:02 -0400

Here's another problem:

      <xsl:for-each-group select="current-group()"
	        group-by="substring(mods:originInfo/mods:dateIssued,1,4)">

One of the good things about the data in question is it's recursive. It's also a problem in this context. The year that is critical to this processing can be represented like:

mods:originInfo/mods:dateIssued (as above) mods:relatedItem/mods:originInfo/mods:dateIssued (the date issued for a book, where the main record is a chapter) mods:relatedItem/mods:part/mods:date (the sort of date you may have with a journal article; associated with the issue)

If I have more than one of these expressions in my group-by statement, I get a "A sequence of more than one item is not allowed as the first argument of substring()" error.

So how should I handle this? Should I define a function -- called, say, bib:year -- that I can call like so?

      <xsl:for-each-group select="current-group()"
	        group-by="bib:year()">

Bruce

Current Thread
groupi-by statements? Bruce D'Arcus - 18 Aug 2004 15:39:39 -0000 <= David Carlisle - 18 Aug 2004 15:47:01 -0000 Bruce D'Arcus - 21 Aug 2004 10:11:07 -0000 Bruce D'Arcus - 26 Aug 2004 15:51:28 -0000 David Carlisle - 26 Aug 2004 15:58:30 -0000

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