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Re: AQL


Hi Tim, 

Just out of curiosity, do you intend to use a parser generator for the task? I've had my eyes on Antlr for quite some time, for I think it has the benefit of supporting a lot of target languages, and it has great tooling support. Of course porting a grammar from one language to other is not easy task, even in Antlr, but still it'd be easier to maintain and enhance, by using a common tool for all openehr related parsing tasks. It's a pitty I've never found the time to get started on this one. 

Cheers

Seref


On Thu, Jul 24, 2008 at 7:29 PM, Tim Cook <timothywayne.cook@gmail.com> wrote:

On Thu, 2008-07-24 at 21:28 +0930, Sam Heard wrote:

> I am trying to start a conversation here for those seeking to use AQL
> and openEHR. We could provide a some tooling to get this moving and
> would even be very pleased to have feedback on how the Query Interface
> might go best.
>
> Hope to hear some ideas about how to progress this the best. We have
> recently enabled interactive editing of the language which does make
> it easier to test the capability of the engine. We would be happy to
> support people working in the open source space with developing the
> language further.

I just noticed that there is a new BNF. I have been waiting for it to
appear since the one I had was dated 2006.

I have someone that will build a parser for this BNF and I will then map
the query to the query engine that we have in OSHIP. This will take 3-4
weeks and by then we should be able to persist some sample data and
start testing queries.

But at this point I do not have any feedback on the existing status of
AQL.  Maybe in a couple of months.

Cheers,
Tim



--
Timothy Cook, MSc
Health Informatics Research & Development Services
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  • Follow-Ups:
    • Re: AQL
      • From: Tim Cook <timothywayne.cook@gmail.com>
  • References:
    • AQL
      • From: Sam Heard <sam.heard@oceaninformatics.com>
    • Re: AQL
      • From: Tim Cook <timothywayne.cook@gmail.com>