Parsing XML->DOM and XSL querying optimising

[John Hicks]

Hi Tony:

How similar are the "140+ XML documents" you mention?  How about put them in
a database and search there?  Might be faster to search *before* you compose
final documents, not after;  whether your database stores entire documents,
or just data for templates...

John Hicks

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> -----Original Message-----
> From: owner-xml-dev at ic.ac.uk [mailto:owner-xml-dev at ic.ac.uk]On Behalf Of
> Tony McDonald
> Sent: Thursday, March 18, 1999 10:35 PM
> To: xml-dev
> Subject: Parsing XML->DOM and XSL querying optimising
>
>
> Hi all,
>
> I have an application that consists of 140+ XML documents, roughly 100k
> bytes each that I want to be able to query (using XSL pattern matching at
> present) and output to XML/HTML and RTF format. This will happen in real
> time (if at all possible).
>
> Additionally, I'd like to be able to search/query the entire repository of
> documents and return a composite XML/HTM or RTF document from these.
>
> At the moment, I'm experimenting with the DOM parser in Python and finding
> that a DOM parse takes about 4 seconds, whilst an XSL query takes
> about 1.8
> seconds.
>
> I reckon that a user could wait the 1.8 seconds for a query, but
> might start
> to get fidgety after almost 6 seconds (how transient we are!).
>
> What strategies have people got for limiting the DOM parsing time?
>
> My own thoughts are that I load up all 140 documents at
> server-startup time,
> parse them into DOM[0]...DOM[139], store them into memory and then query
> each one in turn in the case of a simple query, and query all the DOM
> objects in the case of a full query across all XML documents.
>
> Is this sensible? practical? stupid?
>
> any thoughts on this would be appreciated,
> cheers,
> tone.
>
>
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