RE: [xsl] key declarations (using a sequence constructor)

Subject: RE: [xsl] key declarations (using a sequence constructor)
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Wed, 7 Oct 2009 12:33:09 +0100

> Do they just make 
> a string with some kind of separator breaking up the attributes?
> Isn't there a chance of this failing if the character used 
> for the separator is used in one or more of the attributes?
> 

Yes, and yes.

Unicode gives a wide range of characters to choose from, including the
Private Use area.

An alternative approach is to create separate keys one for each attribute,
and then to search using

key('ka', @a) intersect key('kb', @b) 

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay

Current Thread
[xsl] key declarations (using a sequence constructor) Andy Chambers - 6 Oct 2009 17:22:28 -0000 Message not available G. Ken Holman - 6 Oct 2009 17:52:55 -0000 Andy Chambers - 7 Oct 2009 11:23:14 -0000 Martin Honnen - 7 Oct 2009 11:28:10 -0000 Michael Kay - 7 Oct 2009 11:33:38 -0000 <= David Carlisle - 7 Oct 2009 11:41:59 -0000 Andy Chambers - 7 Oct 2009 12:23:55 -0000 David Carlisle - 7 Oct 2009 11:38:32 -0000

Current Thread

[xsl] key declarations (using a sequence constructor)
- Andy Chambers - 6 Oct 2009 17:22:28 -0000
  - Message not available
    - G. Ken Holman - 6 Oct 2009 17:52:55 -0000
      - Andy Chambers - 7 Oct 2009 11:23:14 -0000
      - Martin Honnen - 7 Oct 2009 11:28:10 -0000
      - Michael Kay - 7 Oct 2009 11:33:38 -0000 <=
      - David Carlisle - 7 Oct 2009 11:41:59 -0000
      - Andy Chambers - 7 Oct 2009 12:23:55 -0000
      - David Carlisle - 7 Oct 2009 11:38:32 -0000

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