Re: xpath_table equivalent
От | Andrew Dunstan |
---|---|
Тема | Re: xpath_table equivalent |
Дата | |
Msg-id | 4B081695.6010604@dunslane.net обсуждение исходный текст |
Ответ на | Re: xpath_table equivalent (Andrew Dunstan <andrew@dunslane.net>) |
Список | pgsql-hackers |
I wrote: >> >> The nice thing about XMLTABLE is that it adds xquery support. I think >> the majority of xquery engines seem to be written in Java. XQuilla is >> C++. I'm not sure if our licensing is compatible, but it I would love >> the irony of using Berkeley DB XML (formerly Sleepycat) now that its >> owned by Oracle. >> >> > > XQuery is a whole other question. Adding another library dependency is > something we try to avoid. Zorba <http://www.zorba-xquery.com/> might > work, but it appears to have its own impressive list of dependencies > (why does it require both libxml2 and xerces-c? That looks a bit > redundant.) > > Even if we did implement XMLTABLE, I think I'd probably be inclined to > start by limiting it to plain XPath, without the FLWOR stuff. I think > that would satisfy the vast majority of needs, although you might feel > differently. (Do a Google for XMLTABLE - every example I found uses > plain XPath expressions.) > > I did look at this a bit further. Sadly, XQilla's XSLT support is stated to be of alpha quality, and missing some quite necessary features (e.g. xsl:output). That pretty much rules out for now Xerces-C+XQilla as an alternative xml stack to libxml2+libxslt, ISTM. cheers andrew
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