Subject: RE: [xsl] XPath2 preceding / following axis and attributes From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Tue, 10 Jan 2006 11:41:30 -0000 |
> So, as a next attempt, are the following two XPath > expressions equivalent: > > > someElement/@someAttribute/following::someNodeTest > > > and > > > > someElement/@someAttribute/../following::someNodeTest > | > someElement/@someAttribute/../descendant::someNodeTest > Yes, I think so. Incidentally, I was at one time under the impression that: following::X ==> ancestor-or-self::node()/following-sibling::node()/descendant-or-self::X but unfortunately this breaks when starting at attributes or namespaces But I think the corresponding equation preceding::X ==> ancestor-or-self::node()/preceding-sibling::node()/descendant-or-self::X is valid. To make the first equation true you have to have to define a new axis following::X ==> ancestor-or-self::node()/following-duckling::node()/descendant-or-self::X where the ducklings of a node N are all the children of the parent of N (even when N is an attribute or namespace). Michael Kay http://www.saxonica.com/
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