Subject: progressive translation
From: "Kent Fitch" <kent.fitch@xxxxxxxxxxxx>
Date: Sun, 26 Apr 1998 12:23:44 +1000
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As I understand it, the general XSL translation
process cannot emit anything until the entire
incoming XML document has been parsed because the
translation rules can potentially require access
to the full parse tree.
However, there will be some applications where
"chunks" of incoming XML can be processed in
relative isolation.
The potential benefit is to improve response time
when a user is wanting to view what is being
translated - they can see the start of the document
before all of it has been translated. In cases
where the whole XML input stream can take some time
to generate, or is large (eg, is being progressively
generated by scanning a large data warehouse), this
improvement could be considerable. As well, it gives
the user the chance to abort the process if what they
are looking at isn't what they wanted, potentially
saving resources and their time.
One way we can achieve this now is to generate the
start of the outer container "manually"
(eg, for HTML: <HTML><TITLE>...</TITLE><BODY>),
then process and emit the chunks progressively,
end then generate the end of the outer container
manually.
Are there better ways in existence or planned?
Kent Fitch Ph: +61 2 6276 6711
ITS CSIRO Canberra Australia kent.fitch@xxxxxxxxxxxx
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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