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Re: [xsl] Using Key in the middle of Xpath

2015-01-19 09:44:06
Off the top of my head I believe the / in an Xpath expression are
iterators, so you should mentally interpret a for-each each time you see a
/ in the expression.

A key returns a node-set (or sequence in XSLT 2) just like navigating the
child axis does.

I would only note that the key expression does not seem to be making use of
it's context (nothing in it depends on //aaa/bbb) but I read the expression
as saying evaluate the key expression for each child of aaa/bbb and get all
the fooval children from the of the called to the key.

On Mon, Jan 19, 2015 at 10:33 AM, Mailing Lists Mail 
daktapaal(_at_)gmail(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:

Guys,
where I consult, I was going through the XSLTs to check if they have
all been done correctly... I came across this Xpath which I thought
was a little unheard of,. I am thinking it is wrong usage, but want to
confirm with you guys.

Xpath :

<xsl:variable name = "foo" select =
"//aaa/bbb/key('mykey','myval')/fooval"/>
where key is :

<xsl:key name = "mykey" select = "ccc/ddd" use = "@id"/>


The code has been working ( I wondered if it was by a toss ) .. But I
have never ever seen a key being used in the middle of the Xpath. For
me it does not make any sense of the use of key.

Comments?

Dak


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