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Re: [xsl] Using Key in the middle of Xpath
Subject: Re: [xsl] Using Key in the middle of Xpath From: "Ihe Onwuka ihe.onwuka@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 19 Jan 2015 15:44:00 -0000 |
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@xxxxxxxxx < xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> 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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