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A high-speed non-validating parser

• To: "Xml-Dev" <xml-dev@l...>
• Subject: A high-speed non-validating parser
• From: Matt Fausey <fausey@c...>
• Date: Thu, 20 Jun 2002 10:23:49 -0500
• In-reply-to: <009501c2186a$635d15c0$4bc8a8c0@A...>
• References: <1024564297.23921.176.camel@ibook>

I would like to announce the availability of a high-performance
non-validating XML parser: Chilkat XML.
(http://www.chilkatsoft.com/ChilkatXml.asp)

This parser is free for commercial or non-commercial use,
and can be redistributed royalty-free.

The reason this parser exists is to make it easy
to navigate large XML documents using a DOM
instead of SAX.  The typical user is somebody with
a large document, 10MB perhaps, and is in a situation
where a typical DOM-based parser is too slow, but
using SAX takes too much programming effort.

Future directions for this parser include:
1) Encryption and digital signatures.

2) Parse-on-demand technology to allow the handling of
very large (100's of MBs) XML files that are memory-mapped
and parsed on demand (i.e. as you navigate through
the DOM, the document is parsed as needed.)

3) Parse From Compressed: XML files typically compress
very well, and the hope is to use parse-on-demand technology
on top of a decompress-on-demand technology.

Best regards, and I hope this can be of use to somebody.

-Matt




At 12:54 AM 6/21/2002 +1000, Rick Jelliffe wrote:
>From: "Eric van der Vlist" <vdv@d...>
>
> > I am happy to announce a first version of Xml Validation
> > Interoperability Framework (xvif), a proposal for embedding pipes of
> > transformations and validations within grammar based schema languages.
>
>I am also happy to contribute a different approach to a modular validation
>framework for XML: Schemachine.
>
>The approach can be found at
>   http://www.topologi.com/public/Schemachine.pdf
>
>Like Eric's, this is a private initiative to stimulate discussion, explore 
>some concrete
>approaches, clarify requirements and perhaps flush out some different 
>approaches.
>
>The Schemachine approach will be very familiar if you have already familar
>with the XML Pipes or XML Pipelines material, or Xerces XNI or Cocoon
>sitemaps. (It is also related to the Connect little language[1] I used for the
>Screamathon Torture Tests for Schematron.)  For that reason, I have not
>offered an implementation to prove its implementability.  (I believe it could
>even be implemented by transformation into a shell script.)
>
>The modular framework supports splitting a document into parts
>by various criteria and applying different validation languages to
>each part.  Like XVIF it also supports splitting values into elements
>and validating them.  The primary difference is that XVIF's approach is
>happening inside a schema language, while my approach happens outside.
>
>I welcome comments and public input, especially on XML-DEV.
>
>Cheers
>Rick Jelliffe
>
>[1] http://www.ascc.net/xml/connect
>
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• References:
  • Ann: Xml Validation Interoperability Framework (xvif)
    • From: Eric van der Vlist <vdv@d...>
  • Ann: Schemachine (a pipelined Xml validation framework)
    • From: "Rick Jelliffe" <ricko@a...>

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