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Posted to user@xmlbeans.apache.org by "Anthony B. Coates (Google)" <ab...@googlemail.com> on 2010/01/18 23:15:11 UTC
XML Zebra, a path-based tool for generating diff fingerprints for XML
Schemas
I have written a tool, using the XMLBeans Schema Object Model API, that
can be used to check the differences between versions of a set of W3C XML
Schemas. The tool can be run with Scala, Java, or Apache Ant. The idea
is that for each version, you create a fingerprint file that contains
paths (like XPaths, but with an extended syntax). By comparing the two
fingerprint files for two versions, you can see what has changed between
the versions of the Schemas.
How does this differ from just doing diffs of the individual Schema files
themselves? The difference is that the path-based approach shows you not
only what has changed, but also shows all of the places that are directly
or indirectly impacted by the change. Also, the path-based approach
ignores restructurings that don't impact users, like renaming of Schema
types or moving of definitions to a different Schema file. Put another
way, the path-based approach allows you to evaluate how the Schemas have
changed from a user-impact perspective, rather than from a simple
file-change perspective.
The software is open source, released under the Apache licence. For more
details, and to download it, see
http://www.xmlzebra.com/
There will be a presentation about this software at the XML Prague 2010
conference, 13-14 March.
http://www.xmlprague.cz/2010/index.html
Feedback would be very welcome. Thanks,
Cheers, Tony.
--
Anthony B. Coates
Director and CTO
Londata Ltd
abcoates@londata.com
UK: +44 (20) 8816 7700, US: +1 (239) 344 7700
Mobile/Cell: +44 (79) 0543 9026
Skype: abcoates
Data standards participant: genericode, ISO 20022 (ISO 15022 XML),
UN/CEFACT, MDDL, FpML, UBL.
http://www.londata.com/
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Re: XML Zebra, a path-based tool for generating diff fingerprints for
XML Schemas
Posted by "Anthony B. Coates (Google)" <ab...@googlemail.com>.
Version 1.0-pre-3 of XML Zebra is now available. It adds the ability to
select which global elements are used as root elements. See
https://launchpad.net/xmlzebra/+announcement/5454
Cheers, Tony.
On Sat, 06 Feb 2010 22:31:12 -0000, Anthony B. Coates (Google)
<ab...@googlemail.com> wrote:
> Version 1.0-pre-2 of XML Zebra is now available. It adds support for
> substitution groups, and you can now set namespace prefixes via the
> command line.
>
> https://launchpad.net/xmlzebra/+announcement/5072
>
> Cheers, Tony.
>
> On Mon, 18 Jan 2010 22:15:11 -0000, Anthony B. Coates (Google)
> <ab...@googlemail.com> wrote:
>
>> I have written a tool, using the XMLBeans Schema Object Model API, that
>> can be used to check the differences between versions of a set of W3C
>> XML Schemas. The tool can be run with Scala, Java, or Apache Ant. The
>> idea is that for each version, you create a fingerprint file that
>> contains paths (like XPaths, but with an extended syntax). By
>> comparing the two fingerprint files for two versions, you can see what
>> has changed between the versions of the Schemas.
>>
>> How does this differ from just doing diffs of the individual Schema
>> files
>> themselves? The difference is that the path-based approach shows you
>> not
>> only what has changed, but also shows all of the places that are
>> directly
>> or indirectly impacted by the change. Also, the path-based approach
>> ignores restructurings that don't impact users, like renaming of Schema
>> types or moving of definitions to a different Schema file. Put another
>> way, the path-based approach allows you to evaluate how the Schemas have
>> changed from a user-impact perspective, rather than from a simple
>> file-change perspective.
>>
>> The software is open source, released under the Apache licence. For
>> more
>> details, and to download it, see
>>
>> http://www.xmlzebra.com/
>>
>> There will be a presentation about this software at the XML Prague 2010
>> conference, 13-14 March.
>>
>> http://www.xmlprague.cz/2010/index.html
>>
>> Feedback would be very welcome. Thanks,
>>
>> Cheers, Tony.
>
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Re: XML Zebra, a path-based tool for generating diff fingerprints for
XML Schemas
Posted by "Anthony B. Coates (Google)" <ab...@googlemail.com>.
Version 1.0-pre-2 of XML Zebra is now available. It adds support for
substitution groups, and you can now set namespace prefixes via the
command line.
https://launchpad.net/xmlzebra/+announcement/5072
Cheers, Tony.
On Mon, 18 Jan 2010 22:15:11 -0000, Anthony B. Coates (Google)
<ab...@googlemail.com> wrote:
> I have written a tool, using the XMLBeans Schema Object Model API, that
> can be used to check the differences between versions of a set of W3C
> XML Schemas. The tool can be run with Scala, Java, or Apache Ant. The
> idea is that for each version, you create a fingerprint file that
> contains paths (like XPaths, but with an extended syntax). By comparing
> the two fingerprint files for two versions, you can see what has changed
> between the versions of the Schemas.
>
> How does this differ from just doing diffs of the individual Schema files
> themselves? The difference is that the path-based approach shows you not
> only what has changed, but also shows all of the places that are directly
> or indirectly impacted by the change. Also, the path-based approach
> ignores restructurings that don't impact users, like renaming of Schema
> types or moving of definitions to a different Schema file. Put another
> way, the path-based approach allows you to evaluate how the Schemas have
> changed from a user-impact perspective, rather than from a simple
> file-change perspective.
>
> The software is open source, released under the Apache licence. For more
> details, and to download it, see
>
> http://www.xmlzebra.com/
>
> There will be a presentation about this software at the XML Prague 2010
> conference, 13-14 March.
>
> http://www.xmlprague.cz/2010/index.html
>
> Feedback would be very welcome. Thanks,
>
> Cheers, Tony.
--
Anthony B. Coates
Director and CTO
Londata Ltd
abcoates@londata.com
UK: +44 (20) 8816 7700, US: +1 (239) 344 7700
Mobile/Cell: +44 (79) 0543 9026
Skype: abcoates
Data standards participant: genericode, ISO 20022 (ISO 15022 XML),
UN/CEFACT, MDDL, FpML, UBL.
http://www.londata.com/
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