[pycsw-devel] CSW search by other fields

[Juan Rapoport]

Hi Tom,

We are now implementing a catalog using the ISO 191939 profile to store
raster metadata.
We store some metadata about the acquisition platform and sensor inside
fields like supplementalInformation (MD_DataIdentification ->
gmd:supplementalInformation), collectiveTitle (CI_Citation ->
gmd:collectiveTitle) or alternateTitle (CI_Citation -> gmd:alternateTitle),
and we need to query by these fields.

We are starting another project using the ISO 19139-2 standard to catalog
products from a SAR satellite mission. We didn't define yet the fields we
are going to use, but this profile allows to specify metadata about the
satellite, sensor, processing algorithms, etc. and we'll need to search
using (al least) all these fields.

In our case, we don't need to add other fields to the response because we
get records in gmd output schema (outputSchema="
http://www.isotc211.org/2005/gmd"). This return the same xml used to
catalog, right?
Then we parse the response using  jsonix (
https://github.com/highsource/jsonix) and ogc-schemas (
https://github.com/highsource/ogc-schemas) to transform the XML response
into JSON.
ogc-schemas recently added suport for the ISO 19139-2 (
https://github.com/highsource/ogc-schemas/issues/109).

For now we are using the standard database; I don't know if additional
columns will be the solution. Maybe using xpath to query inside the xml and
allow to configure the queryable fields (AdditionalQueryables).

Thanks!


2015-09-29 23:58 GMT-03:00 Tom Kralidis <tomkralidis at gmail.com>:

> Hi Juan:`
>
> On Tue, Sep 29, 2015 at 3:54 PM, Juan Rapoport
> <juanrapoport at suremptec.com.ar> wrote:
> > Hi,
> >
> > Is it possible to configure which are the queryable fields for the
> > GetRecords requests?
> >
>
> Can you provide more context or use case(s)?  Is the goal here solely
> to extend queryables against additional columns from a custom
> database?  Do these queryables need to be provided in the CSW response
> (i.e. returnables)?  Can you provide some examples of what sample
> queries could look like?
>
> We've had similar discussions before, and implementation/enhancement
> options range from allowing an extensible queryables approach via
> configuration, to custom non-standard CSW application profiles (which
> I'd tend to avoid unless absolutely required).
>
> Cheers
>
> ..Tom
>
> > Thanks
> >
> > --
> > Juan Rapoport
> > SUR Emprendimientos Tecnológicos
> >
>



-- 
Juan Rapoport
SUR Emprendimientos Tecnológicos

Av. Rivadavia 611 Piso 11º  (C1002AAE)
Ciudad de Buenos Aires, Argentina
Tel. +54 (11) 4342-2976/84
juanrapoport at suremptec.com.ar <apc at suremptec.com.ar>
www.suremptec.com
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