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RE: Integrated sort using different elements

Subject: RE: Integrated sort using different elements
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 19 Feb 2009 10:59:28 -0500
RE:  Integrated sort using different elements
At 2009-02-19 10:30 -0500, you wrote:
> From: G. Ken Holman [mailto:gkholman@xxxxxxxxxxxxxxxxxxxx]
> In XSLT 1.0 you might do something along the lines of:
> <xsl:sort select="
>    monogr/author |
>    self::*[not(monogr/author)]/analytic/author |
>    self::*[not(monogr/author | analytic/author)]/monogr/editor |
>    self::*[not(monogr/author | analytic/author |
> monogr/editor)]/monogr/title"/>

I think for XSLT 1.0 you can simplify that select to:

<xsl:sort select="(monogr/author|analytic/author)[1]"/>

which should also work in XSLT 2.0 without using a sequence.

False. I considered that until I looked at the data sample given by the original poster:

At 2009-02-19 09:09 -0600, Quinn Dombrowski wrote:
Here's what a complete (for this purpose) entry looks like-- most entries are missing one or many of these elements:
<author>Author Name</author>
<title>Article Name</title>
<author>Other Author Name</author>
<title>Journal Title</title>
<editor>Editor Name</editor>

Note the order of the elements: the union operator "|" returns the addressed content in document order, so your predicate would only select the first in document order of the entry, not the first addressed in the expression.

That's one nice thing about sequences in XSLT 2.0: the order is the order expressed, not document order.

I hope this helps.

. . . . . . . . . . . Ken

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