Subject: Re: [xsl] Keying over added attributes in temporary tree From: Tim Lebo <timleboxslt@xxxxxxxxx> Date: Fri, 27 Jan 2006 10:51:27 -0500 |
Awesome! That's what I was looking for. Thanks. -Tim On 1/27/06, David Carlisle <davidc@xxxxxxxxx> wrote: > > I would assume that the keys are created before starting the "/" template. > The xsl:key element is not allowed in a template, so that can't force > the re-indexing for the key. > > The specification doesn't say when they are created, but in practice for > performance reasons most systems only create them when (if) they are > referenced by key(). keys (separately) index all trees, there is no way > to specify an key only applies to one tree. So if you use xsl:key when > the current node is in a temporary tree (or if you supply a node in a > temporary tree as third argument) then that tree will be indexed using > the specified key. > > 1) Is the xsl:variable "objects-with-new" considered a "temporary > tree"? > The value of that variable is a (document node of a) temorary tree, yes. > > 2) Is it possible to access the "object" elements in $objects-with-new > via a key, where the @use is an attribute that was added after parsing > the input document? > > Yes > > key('objects-by-new','a') if the current node is a descendant of > $objects-with-new or > key('objects-by-new','a',$objects-with-new) otherwise. > > so for example > > 20 <xsl:copy-of select="$objects-with-new//object[@new=2]"/> > > > could be > > 20 <xsl:copy-of select="$objects-with-new/key('objects-by-new','2') "/> > > or > > 20 <xsl:copy-of select="key('objects-by-new','2',$objects-with-new) "/> > > David > > ________________________________________________________________________ > This e-mail has been scanned for all viruses by Star. The > service is powered by MessageLabs. For more information on a proactive > anti-virus service working around the clock, around the globe, visit: > http://www.star.net.uk > ________________________________________________________________________
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