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Re: [xsl] key() question?


Subject: Re: [xsl] key() question?
From: Steven Noels <stevenn@xxxxxxxxxxxxxxxx>
Date: Wed, 10 Jul 2002 13:57:44 +0200

Jeni Tennison wrote:
Hi Steven,


I have some keys declared for easy access to the attributes declared for
a specific element, and to retrieve the contentModels in which an element is referred to:


<xsl:key name="attlistbyname" match="/dtd/attlist" use="@ename"/>
<xsl:key name="contentmodelbychildren" match="//contentModel" use="descendant::element/@name"/>


[A // beginning a pattern (match attribute) is always superfluous --
you're matching "any contentModel element that is a descendant of the
root node" when you may as well match "any contentModel element" since
all elements must be descendants of the root node by definition.]

Jeni,


I want to understand this: is this the behaviour of the key construct? Will it always do a full recursive traversal of the entire tree to locate nodes matches by the pattern? Or is there something else that I need to keep in mind when specifying patterns for keys?

</Steven>
--
Steven Noels                            http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
stevenn@xxxxxxxxxxxxxxxx                      stevenn@xxxxxxxxxx


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