On 10/11/2013 1:50, [email protected] wrote:
Yes Holger, that might actually work. Looking forward to the next release!
Just checking, have you tried the approach (of making the function
public) and does it work? I do not have time right now to experiment
with those things myself, so if you have a patch then I could turn
around a new version quickly.
Thanks,
Holger
Martynas
2013 m. spalis 7 d., pirmadienis 03:47:18 UTC+2, Holger Knublauch rašė:
Hi Martynas,
you may know that for SPIN rules it is possible to use
sub-properties of
spin:rule. People can define their own properties such as my:prepRule
and my:postRule and use this for grouping. The SPIN API exposes
this by
allowing developers to pass in the rule predicate as an argument. The
same mechanism could be used for constraints.
If you look at SPINConstraints, you should see a call to the
private method
addConstraintViolations(results, instance, SPIN.constraint,
false, stats, monitor);
where the SPIN.constraint property is hard-coded. In your version,
you
could make this method public, or expose alternative versions of
check
with an additional parameter for the sub-property, similar to how
SPINInferences does it.
Would this work? I could add such a public method to the next
release.
In the absence of this change, the conservative solution is to use
multiple files:
main.ttl
preconstraints.ttl (imports main.ttl)
postconstraints.ttl (imports main.ttl)
and then use the outer control logic to select which union graph
to run
over.
Cheers,
Holger
On 10/2/2013 21:26, [email protected] <javascript:> wrote:
> Hey,
>
> I'm receiving an RDF model which then goes through the following
steps:
> 1. pre-process SPIN validation (checking for missing properties
etc)
> 2. processing (building URIs for blank nodes, generating hashes
from
> passwords etc.)
> 3. post-process SPIN validation (checking for processed properties,
> existing resources with same URI etc)
>
> What I need is a way to group constraint templates (or their
> instances?), so that some of them would only be executed during
> pre-process, and others during post-process.
> I've noticed the practice of grouping templates into super-classes,
> but it gets complicated as for example dqc:MissingProperties
could be
> a pre-process constraint in relation to foaf:name, but
post-process in
> relation to :passwordHash property.
>
> Any ideas on how to go about this? The code I'm currently using to
> register and execute constraints is:
>
> getOntModel().add(model);
> SPINModuleRegistry.get().registerAll(getOntModel(), null);
> List<ConstraintViolation> cvs =
> SPINConstraints.check(getOntModel(), null);
>
> Thanks,
>
> Martynas
> graphityhq.com <http://graphityhq.com>
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