Subject: Re: [xsl] ancestor axis order From: David Carlisle <davidc@xxxxxxxxx> Date: Tue, 4 May 2004 15:58:52 +0100 |
> and it works. don't sound so surprised:-) > But I for one would appreciate a JT class explanation. ancestor::* is all the ancestor element nodes, and within this step (only) they will be ordered in reverse document order. as ancestor is a reverse axis. "this step" means up to the end of the expression or to the next / , predicates in [] are part of the step. [self::define or self::choice] this is a boolean valued predicate so after evaluating this, the current node list just consists of nodes for which the predicate is true, ie define or choice elements. [1] This is a numeric valued predicate so is [positon()=1] and as we are in a reverse axis step this is true for just the innermost element in the current node list ie the innermost define or choice [self::choice] This is a node-set predicate so is true just if the node set is non-empty: it will be non-empty if the single node which got past the [1] is a choice and false otherwise, so it is true just if the innermost define-or-choice element is a choice. Jeni -- The LaTeX Companion http://www.awprofessional.com/bookstore/product.asp?isbn=0201362996 http://www.amazon.co.uk/exec/obidos/tg/detail/-/0201362996/202-7257897-0619804 ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. 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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