On 12/09/2017 11:38, Steven Folsom wrote:
A couple quick questions:
* Does TopBraid Composer support sh:order by default in the GUI? I
couldn't find the option to assert sh:order in the Node Shape Form
Editor, but I was able to type it directly in the ttl from the
source code tab. (After which it displayed in the GUI.)
You can add any property that is not already visible to a form using the
highlighted button "Add widget for property..."
o Related, is it best practice to begin sh:order with the number 0?
Yes I would say so. BTW the SHACL main document unfortunately does not
clarify what the default value of sh:order is, if absent. Elsewhere (in
SHACL-AF for rules) we made 0 the default and I believe this makes most
sense in general.
* Similarly, is sh:group supported by default in the Node Shape Form
Editor? (E.g. can you select sh:group and create links to
instances of sh:PropertyGroup using the UI?
See above, you'd first need to add the widget. If this becomes too time
consuming, you can select sh:NodeShape in the classes tree and then go
to the Form Layout tab where you can define a custom layout for the
class, so that it will always be there, e.g.
Make sure the "Show widgets for all matching properties" button is
activated in the upper right corner of the form window.
We do not automatically show sh:order and sh:group for node shapes,
because arguably these options are more important for property shapes
than node shapes. What is your use case for these properties at node
shapes? I could certainly add them for everyone if they turn out to be
important.
* With respect to cardinality and repeatability, if a shape includes
a PropertyShape without a sh:max is the expectation that it is
repeatable?
Yes, a sh:maxCount of undefined means that it may have any number of
values, including two or more.
* Is there a way to say "repeatable" explicitly? Or does OWA not
apply in SHACL?
I don't see the connection between repeatability and the OWA - even
closed world models may have multi-valued properties. The only way to
say this is by excluding a sh:maxCount. "Repeatable" is not a constraint
condition that could be checked, so there is nothing to do for a SHACL
engine here.
Regards,
Holger
Thanks in advance,
Steven
--
Steven Folsom
Metadata Specialist
Cornell University Library
http://orcid.org/0000-0003-3427-5769
http://vivo.cornell.edu/individual/sf433
@sf433
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