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Re: Processing huge XML files

• To: Thomas Lee <ytlee@c...>, xml-dev <xml-dev@l...>
• Subject: Re: Processing huge XML files
• From: Robin LaFontaine <robin.lafontaine@d...>
• Date: Fri, 11 Oct 2002 10:14:48 +0100
• In-reply-to: <3DA62CB4.3000408@c...>
• References: <3DA62CB4.3000408@c...>

Thomas,

Another approach to your problem may perhaps be to look at handling 
just changes to the data rather than all the data - I don't know the 
details of your app so this may or may not be appropriate.

We have to read large files into memory to do comparisons and can 
handle up to 50Mb XML files (we have to read two of these in at the 
same time to compare them!), but we could not use DOM for this and 
had to develop our own representation.

Robin
http://www.deltaxml.com/comparing-large-files.html

At 9:43 am +0800 11/10/02, Thomas Lee wrote:
>Hi all,
>
>We need to process very large XML files (up to a few ten MB). So we 
>can't process the whole file with DOM in memory. We are prepared to 
>use SAX to parse a large XML file and store into our data structure 
>in the disk (propietary data structure or RDBMS). We'll also provide 
>a set of APIs for access the contents in the XML file. Now the XML 
>content change is not required.
>
>However, instead of developing a customized solution, I'd like to 
>know if there is any existing tools and library handling large XML 
>files in disk.
>
>Regards,
>Thomas
>
>--
>   Thomas Y.T. LEE
>   Chief Technology Officer
>   Center for E-Commerce Infrastructure Development (CECID)
>   Department of Computer Science and Information Systems
>   The University of Hong Kong
>   E-mail: ytlee@c...  URL: http://www.cecid.hku.hk
>   Tel: +852 22415388  Fax: +852 25474611
>   Room 301, Chow Yei Ching Building
>   Pokfulam Road, Hong Kong SAR, China
>
>
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-- 
-- -----------------------------------------------------------------
Robin La Fontaine, Director, Monsell EDM Ltd
DeltaXML: "Change control for XML, in XML"
Tel: +44 1684 592 144 Fax: +44 1684 594 504
Email: robin.lafontaine@d...      http://www.deltaxml.com

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    • From: Thomas Lee <ytlee@c...>

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