xquery & web server in browser

[Andrew Welch]

2009/6/19 Florent Georges <http://x-query.com/mailman/listinfo/talk>:
>
> Robert Koberg wrote:
>
>> Ideally I would use XQuery to gather the requested parts of
>> various documents in the existing structure/schema. Then, allow
>> XSL to transform the XQuery builtup nodeset without having to
>> create some DOMish (even if it is the XSL processor's optimized
>> DOM) object.
>
>  But XSLT does not rely on DOM (or on anything "DOMish.")  XSLT
> does work, like XQuery, on XDM instances.  I know a very good
> XQuery engine that evaluates queries against documents in memory.
> I am not sure there is an XSLT implementation working on an XML
> database (I mean directly on the nodes in the database,) but I
> know eXist has some support for XSLT (I don't know if it accesses
> nodes directly from the database or if it works on an in-memory
> tree.)

What Rob means (if can speak for him, we've talked about this before a
few times :) is that currently if you construct an xhtml page using
xslt, which calls xquery to build the input from an xml db (such as
using doc()  to call eXist's rest interface) then this happens:

xml db -> xquery -> xml doc -> xslt -> xhtml

...an intermediary xml document is constructed.

Hopefully this step will be removed soon when xslt can talk directly
to the database, or at least operate on the result of a query without
the serialisation/parse step.

Also, I'm looking forward to standalone runnable transforms, so I can
map a url to a stylesheet and have its "main" named template run...  I
guess/hope eXist will do something like this too.


-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/