Subject: Re: About Constructions rules From: Matthias Clasen <clasen@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 15 Jul 1999 22:02:45 +0200 |
> > Then, would the query construction rule as specified by the specs would be > useful to be implemented. Comments? I think so, and after all this talk about query, I'm just now studying the source to find the right hooks for implementing query. > > The first suggestion is that it could be useful to pattern match on some > non-elements nodes like 1) processing instructions, 2) properties, 3) data > (no so sure of this one). the element and PI construction rules are > restricted to solely element pattern match. Thus, the query construction > rule opens the door to other documents objects being processed. Yes, but only to the extent they're actually present in the grove. The jade grove plan is fixed to a restricted subset, but it contains more than just element nodes. And even for element nodes, query allows you to select element nodes based on any criterion you can turn into a node-list-filter, making many of the -2 extensions to element patterns redundant. Actually, I claim that you can implement all other rules in terms of query. -- Matthias Clasen, Tel. 0761/203-5606 Email: clasen@xxxxxxxxxxxxxxxxxxxxxxxxxx Mathematisches Institut, Albert-Ludwigs-Universitaet Freiburg DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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