Re: Hydra to define structure of a POST

Hi,

As per the definition of `hydra:expects`: its domain is a type
`hydra:Operation` and its range is a type `hydra:Class`.

https://github.com/lanthaler/Hydra/blob/master/spec/latest/core/core.jsonld#L256

So it is that it is not possible to use these properties to reference
entities that are not Hydra classes or its subclasses.
Hope this helps.

Regards

On Fri, Apr 27, 2018, 10:41 AM Mark Wilkinson UPM <mark.wilkinson@upm.es>
wrote:

> I may be misinterpreting your answer.
>
> Specifically:  I assume that the "reference to external vocabulary" (as
> you say in your response) would happen using the hydra:expects
> hydra:returns properties?  And that the value of that property could be
> any externally-defined class or schema (e.g. an RDFS, or an XML Schema,
> or a JSON-Schema, or even an OWL Class?)   If that interpretation of
> your answer is correct, then that is the answer to my question.
>
>
> Mark
>
>
>
>
> On 04/27/2018 11:18 AM, Lorenzo Moriondo wrote:
> > Hi,
> >
> > I don't know if I got the question right but the Hydra vocabulary
> > itself provides the syntax to describe endpoints, allowed methods and
> > their properties (for a full example check
> >
> https://github.com/HTTP-APIs/hydra-flock-vocab/blob/master/hydra_flock.jsonld
> > ). In general, Hydra is an extension of RDF so any referencing to
> > external vocabulary you may want can be specified in the JSON-LD
> > context and then assigned as a property to an Hydra class.
> >
> > Regards
> >
> > On Fri, Apr 27, 2018, 9:53 AM Mark Wilkinson UPM
> > <mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es>> wrote:
> >
> >     Hello Hydra-ers!
> >
> >     Quick Q:  I've gone through the documentation (admittedly, not
> >     deeply)
> >     looking for some way to use the Hydra vocab to indicate where a
> >     client
> >     should go to find a schema defining the structure/syntax for a POST
> >     operation (e.g. RDFS, XSD, JSON-Schema, etc.).  I have had no luck
> >     finding this myself, so hopefully someone on this list can point
> >     me in
> >     the right direction?
> >
> >     Thanks!
> >
> >     Mark
> >
> >
> >
> >
>
> --
> Dr. Mark D. Wilkinson
> BBVA-UPM Industry Chair on Biotechnology
> Isaac Peral Distinguished Researcher
> Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
> Campus Montegancedo,
> Autopista M-40 (Km 38)
> 28223-Pozuelo de Alarcón (Madrid)
>
>
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> for the urge to rule it"
>
>                         -- H. L. Mencken
>
>