[ckan-dev] OpenSearch

Wed Feb 3 11:36:00 UTC 2016

Hello Pedro.

Extension ckanext-publicamundi bases its CSW functionality on PyCSW.
In a nutshell, it synchronizes (when certain events occur) all dataset
updates to the database tables managed by PyCSW.

The relevant plugin is `PackageController` and is defined at
https://github.com/PublicaMundi/ckanext-publicamundi/blob/master/ckanext/publicamundi/plugins.py#L627
.
The synchronization logic lies at
https://github.com/PublicaMundi/ckanext-publicamundi/blob/master/ckanext/publicamundi/lib/pycsw_sync.py

We plan to isolate this functionality (something like a `pycsw_sync`
plugin), but this is a plan for the next 2 months (so dont expect it to
arrive very soon). Of course, we'd be happy to receive contribution on
this, you can
fork the upstream repo and work on a feature branch. In any case, any
issues are welcomed at
https://github.com/PublicaMundi/ckanext-publicamundi/issues

You can see a live example at Greece's national geodata catalogue
http://www.geodata.gov.gr.
For example,
http://www.geodata.gov.gr/en/dataset/geniko-poleodomiko-skhedio-demou-drapetsonas
see the "Download" button with several options backed by CSW.

Regards, Michail Alexakis
Software Engineer,
Research Center "Athena", Athens, Greece

On Wed, Feb 3, 2016 at 1:01 PM, Pedro G Silva <pedro.gracio at deimos.com.pt>
wrote:

> I found a plugin https://github.com/PublicaMundi/ckanext-publicamundi
> which provides CSW out of the box for all datasets. I am in the process of
> trying to extract the relevant code and maybe try and create and extension
> which ckan itself could use? Or myabe the authors could do it? Is this of
> interest to ckan?
>
> On Thu, Jan 28, 2016 at 10:07 PM, Tom Kralidis <tomkralidis at gmail.com>
> wrote:
>
>> FYI the pycsw endpoint provides OpenSearch (and OAI-PMH and SRU)
>> support our of the box. In all cases this is against harvested
>> content. We could implement a custom OpenSearch endpoint however It
>> would be valuable to look into enhancing CSW/etc access beyond just
>> harvested content.
>>
>> ..Tom
>>
>> On Thu, Jan 28, 2016 at 12:30 PM, Pedro G Silva
>> <pedro.gracio at deimos.com.pt> wrote:
>> >
>> > Hi All
>> > I'm looking for something that implements or adds opensearch like
>> queries to CKAN. I found out about the ckan-harvest plugin with the spatial
>> one, using pycsw, but this adds the inconvienet of having to write my own
>> harvester (I explored that front, but the documentation on this is not
>> great). On http://ckan.org/open-standards/ it states CKAN "includes a
>> CSW server to present a CSW interface to its own data" . Is this
>> misleading? Or is a reference to the spatial CSW support?
>> >
>> > --
>> >
>> >
>> > Pedro Gracio Silva
>> > Aerospace Systems / Production Center
>> >
>> > Av. D. Joao II, Lt 1.17.01, 10 • 1998-023 Lisboa, Portugal
>> > Ph: +351 21 893 3020 • Fax: +351 21 896 9099
>> >
>> >
>> > _______________________________________________
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>> >
>>
>
>
>
> --
>
>
> [image: DEIMOS Engenharia, SA] <http://www.deimos.pt>
> *Pedro Gracio Silva*
> Aerospace Systems / Production Center
>
> *Av. D. Joao II, Lt 1.17.01, 10 • 1998-023 Lisboa, Portugal*
> Ph: +351 21 893 3020 • Fax: +351 21 896 9099
>
>
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