Re: [xsl] key() question?

[Steven Noels <stevenn at outerthought dot org>]

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@outerthought.org                      stevenn@apache.org


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