1. the dot means "self"
2. the pipe means "union" or "join" (it does not mean "or")
3. the [1] refers to the first node in the nodeset
Saludos,
María
-----Original Message-----
From: owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
[mailto:owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com]On Behalf Of
Jaime Stuardo
Sent: January 13, 2004 10:58 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Anyone can explain me this syntax?
Hi all...
From Muenchian method of grouping, I always use something like this:
ROW[count(. | key('relacion_x_cobertura', REL_ID)[1]) = 1]
That always works, but I want to understand he reason of that syntax, so
that if I don't have the possibility of doing copy & paste from other code,
I could be able to write that expression by myself.
I know that instruction only returns the different elements contained in
ROW. That difference is determined by REL_ID value.
But the actual questions are:
- Why the . (dot) is used? why if I omit it, it doesn't work (it returns all
elements)?
- What's the meaning of the | (pipe)?
- What's the meaning of [1]? I have always used things like
[FIELD_NAME=some_value]. I understand that perfectly, but what about placing
only that number in the brackets? I tried by using [2] and it worked too...
or, perhaps I was lucky?
Thanks a lot in advance
Jaime
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list