You might try db:node-id and db:open-id [1] or the "pre" versions depending on your use case. Regards /Andy
[1] http://docs.basex.org/wiki/Db_Module#db:node-id On Sat, Apr 6, 2013 at 3:35 AM, C. M. Sperberg-McQueen < cms...@blackmesatech.com> wrote: > I'm experimenting with the construction of secondary documents which > contain information about my primary documents. I won't go into > details, but it would not be too far off to think of them as user-created > indices -- my goal is to pre-calculate some information I expect to want > often in queries, to see if using such secondary documents produces > faster responses than running the original queries on the original > documents. It would be handy to be able to point from my secondary > documents to specific nodes (in my case, always elements, at least at > the moment) of the primary documents. > > The same desire arises when I try to build text search interfaces that > return hits with a small amount of context; I want to be able to provide > links that point to an appropriate ancestor element, so the user can > see more context if desired. > > One way to handle this desire would be to take the base URI of the node, > and the path from the root to the element and point to elements using > XPointer element() expressions of the form > > collection/docname.xml#element(1/2/4/1/1) > > (A function for fast resolution of XPointer element() expressions > would be a nice thing to have, by the way.) > > In some XQuery implementations, I believe there are functions > which return some sort of internal identifier for element nodes, > and other functions which take that identifier as an argument and > quickly return that node. (Or perhaps I am just remembering a > facility from the first SGML database I used intensively.) Such functions, > if they exist, seem likely to be faster than resolution of element() > expressions. > > Is there anything like that in BaseX? > > Thanks! > > -- > **************************************************************** > * C. M. Sperberg-McQueen, Black Mesa Technologies LLC > * http://www.blackmesatech.com > * http://cmsmcq.com/mib > * http://balisage.net > **************************************************************** > > > > > _______________________________________________ > BaseX-Talk mailing list > BaseX-Talk@mailman.uni-konstanz.de > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk >
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