[ckan-dev] CKAN-specific considerations for DCAT-AP

Timothy Giles timothy.giles at slu.se
Tue Dec 20 17:29:09 UTC 2016


​Yes, I (my colleagues and I) do.


We use scheming (fluent, repeating, scheming and composite) to define the metadata schema(s) and a custom mapping so DCAT extension can do its thing. Works well for us.


Regards Tim


________________________________
From: ckan-dev <ckan-dev-bounces at lists.okfn.org> on behalf of Armin Retterath <armin.retterath at gmail.com>
Sent: 20 December 2016 05:53 PM
To: CKAN Development Discussions
Subject: Re: [ckan-dev] CKAN-specific considerations for DCAT-AP

hello together,

is the ckanext-dcat extension compatible to ckanext-scheming? does anyone use both extensions together? i think a sync of both will be great - like having a minimal schema which allows the export of minimal dcat documents.

best regards

armin

2016-12-20 16:10 GMT+01:00 Stefan Oderbolz <stefan.oderbolz at liip.ch<mailto:stefan.oderbolz at liip.ch>>:
Hi Florian,

I'm part of the team that implemented DCAT-AP Switzerland for opendata.swiss, an CKAN-based opendata portal for Switzerland.

We rely on ckanext-dcat, you can find the source here: https://github.com/opendata-swiss/ckanext-switzerland/blob/master/ckanext/switzerland/dcat/profiles.py
DCAT-AP Switzerland is based on the European DCAT-AP standard, but has some fields that are used differently. As a help for the data publishers we setup a handbook with the documentation, so that they have a reference guide: http://handbook.opendata.swiss/en/library/ch-dcat-ap

The portal provides 3 ways for data provides to add new datasets:

1. Add them manually using the WordPress backend of opendata.swiss (the source code of this backend can be found here: https://github.com/opendata-swiss/wp-ckan-backend)
2. Upload a valid DCAT-AP Switzerland XML in the WordPress backend of opendata.swiss
3. Provide a DCAT-AP Switzerland RDF harvester source, we then use the harvester provided by ckanext-dcat to harvest these data providers (https://github.com/ckan/ckanext-dcat#rdf-dcat-harvester)


Our learnings:
- Get feedback from the data providers early on
- If possible, provide a validator for your DCAT-AP profile
- If possible, provide an export functionality for manually entered data, so that less experienced users have an easy way to "generate" a valid example


Feel free to contact me if you have further questions.

Best regards Stefan


On Mon, Dec 19, 2016 at 10:03 AM, <Florian.Brucker at mb.karlsruhe.de<mailto:Florian.Brucker at mb.karlsruhe.de>> wrote:
Dear Tim,

your profile would definitely be a great help! Since others may be in the same situation as me you could also think about posting the files on GitHub or something similar.


Regards,
Florian


"ckan-dev" <ckan-dev-bounces at lists.okfn.org<mailto:ckan-dev-bounces at lists.okfn.org>> schrieb am 16.12.2016 14:58:05:

> Von: Timothy Giles <timothy.giles at slu.se<mailto:timothy.giles at slu.se>>
> An: CKAN Development Discussions <ckan-dev at lists.okfn.org<mailto:ckan-dev at lists.okfn.org>>,
> Datum: 16.12.2016 14:58
> Betreff: Re: [ckan-dev] CKAN-specific considerations for DCAT-AP
> Gesendet von: "ckan-dev" <ckan-dev-bounces at lists.okfn.org<mailto:ckan-dev-bounces at lists.okfn.org>>
>
> I can send you are profile, but they are specific to our metadata schema.
>
> I cant say I am an expert on DCAT AP – the most confusing issue is
> the various examples I find around the web that don’t work with
> validators! We want to connect to oppna data .se and they have
> examples but these don’t validate fully in their sandbox system…
> But, it is still pretty easy to change. I will send you our schema
> document, json and the profile early next week.
>
> Regards Tim
>
> From: ckan-dev [mailto:ckan-dev-bounces at lists.okfn.org] On Behalf Of
> Florian.Brucker at mb.karlsruhe.de<mailto:Florian.Brucker at mb.karlsruhe.de>
> Sent: den 16 december 2016 13:29
> To: CKAN Development Discussions <ckan-dev at lists.okfn.org<mailto:ckan-dev at lists.okfn.org>>
> Subject: Re: [ckan-dev] CKAN-specific considerations for DCAT-AP
>
> Dear Timothy,
>
> thanks for the feedback! Nice to hear that things are working well.
> Is there anything that worked particularly well or not? Anything to
> watch out for when defining the profile?
>
> Are your adaptions to ckanext-dcat available somewhere?
>
>
> Regards,
> Florian
>
>
>
>
> "ckan-dev" <ckan-dev-bounces at lists.okfn.org<mailto:ckan-dev-bounces at lists.okfn.org>> schrieb am 16.12.2016 11:17:28:
>
> > Von: Timothy Giles <timothy.giles at slu.se<mailto:timothy.giles at slu.se>>
> > An: CKAN Development Discussions <ckan-dev at lists.okfn.org<mailto:ckan-dev at lists.okfn.org>>,
> > Datum: 16.12.2016 11:17
> > Betreff: Re: [ckan-dev] CKAN-specific considerations for DCAT-AP
> > Gesendet von: "ckan-dev" <ckan-dev-bounces at lists.okfn.org<mailto:ckan-dev-bounces at lists.okfn.org>>
> >
> > Hi Florian,
> >
> > We use CKANEXT-DCAT as a base and have a custom DCAT AP 1.1 profile
> > defined. It is easy to do, using the current profile as a base. If
> > you know DCAT and have the profile mapped out already, it is a few
> > hours work to implement.
> >
> > Regards Timothy
> >
> > From: ckan-dev [mailto:ckan-dev-bounces at lists.okfn.org] On Behalf Of
> > Florian.Brucker at mb.karlsruhe.de<mailto:Florian.Brucker at mb.karlsruhe.de>
> > Sent: den 16 december 2016 11:10
> > To: ckan-dev at lists.okfn.org<mailto:ckan-dev at lists.okfn.org>
> > Subject: [ckan-dev] CKAN-specific considerations for DCAT-AP
> >
> > Hi!
> >
> > The German council responsible for the metadata standard for open
> > government data  has recently decided to develop a custom DCAT-AP
> > profile "DCAT-AP.DE<http://DCAT-AP.DE>". That profile will be used for collecting and
> > exchanging meta data in the open data portals of the German
> > administration (on federal, state and municipal level). Many of the
> > German open data portals are CKAN-based, so I'm wondering if there's
> > anything CKAN-specific that we should keep in mind while developing
> > DCAT-AP.DE<http://DCAT-AP.DE>. I'm aware of ckanext-dcat but have never used it myself.
> >
> > Does anybody have experiences with using CKAN for DCAT-AP and
> > profiles derived from it?
> >
> > Thanks for any input!
> >
> >
> > Regards,
> > Florian_______________________________________________
> > ckan-dev mailing list
> > ckan-dev at lists.okfn.org<mailto:ckan-dev at lists.okfn.org>
> > https://lists.okfn.org/mailman/listinfo/ckan-dev
> > Unsubscribe: https://lists.okfn.org/mailman/options/ckan-dev
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