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Re: [Jsonpath] Regular expressions in filters

"Martin J. Dürst" <duerst@it.aoyama.ac.jp> Thu, 13 May 2021 09:50 UTC

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To: Carsten Bormann <cabo@tzi.org>, Tim Bray <tbray@textuality.com>
Cc: jsonpath@ietf.org
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From: "Martin J. Dürst" <duerst@it.aoyama.ac.jp>
Organization: Aoyama Gakuin University
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Archived-At: <https://mailarchive.ietf.org/arch/msg/jsonpath/vgxso6-7jlOup4nI3DJtD9PwSTY>
Subject: Re: [Jsonpath] Regular expressions in filters
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Hello Carsten,

On 2021-05-12 22:03, Carsten Bormann wrote:
> On 2021-05-09, at 20:28, Tim Bray <tbray@textuality.com> wrote:
>>
>> Regular expressions in filters?
>> Issue #70: https://github.com/ietf-wg-jsonpath/draft-ietf-jsonpath-base/issues/70
> 
> We had a good discussion about issue #70 yesterday in the interim.
> I promised to supply a PR.
> 
> It turned out that the work that is needed is to a large part reusable in other contexts.
> 
> So instead of writing the PR, I submitted a separate Internet-draft first.
> This should supply the answer to the question what flavor of regexps we want to use:
> 
> https://www.ietf.org/archive/id/draft-bormann-jsonpath-iregexp-00.html

I haven't looked at the details, and I'm guessing that you are also 
aware of it, but I guess Section 4 should be entitled
"4. Formal definition of I-Regexp Syntax" rather than just
"4. Formal definition of I-Regexp". At the moment, the semantics are 
completely implicit. That could be fixed with a clear pointer to the XSD 
semantics, such as saying "The semantics of all the constructs defined 
in this ABNF are the same as those in [XSD]." or some such.

Regards,   Martin.

> If we like this approach (which certainly needs a bit more work, as we want to make sure we hit the right level of complexity), I can supply the PR that anchors this specification in the jsonpath specification.
> 
> Grüße, Carsten
>

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