Hi Martynas,
I tried your example from TBC and the constraint is correctly tested
there (although there is an NPE in 4.3 when you look at instances of
your class, now fixed for 4.4). I assume you are running this via the
API, so I can only guess what else may be wrong. Maybe missing imports
in the query graph. You may need to step through the code to see what
it's really doing, or provide more details on your scenario and what
happens. I also tried the following that comes with SPL and works fine too:
:ProductOrServiceModel
....
spin:constraint [ a spl:ObjectCountPropertyConstraint ;
arg:maxCount 2 ;
arg:property rdf:type
] .
Does the latter work for you?
Holger
On 9/25/2013 10:23, [email protected] wrote:
Hey,
I couldn't find a complete example of a SPIN cardinality constraint,
but I put together pieces that I found (mainly in the SPL). However, I
can't get it to work -- the constraint does not seem to execute.
:ProductOrServiceModel a rdfs:Class, owl:Class ;
rdfs:subClassOf gr:ProductOrServiceModel ;
spin:constraint [ a :CardinalityViolationTemplate ;
spl:predicate rdf:type ;
spl:minCount "3"^^xsd:integer
] .
:CardinalityViolationTemplate a spin:Template ;
spin:body [ a sp:Construct ;
sp:text """CONSTRUCT {
_:b0 a spin:ConstraintViolation .
_:b0 spin:violationRoot ?this .
_:b0 spin:violationPath ?predicate .
_:b0 rdfs:label "Property {?predicate} does not have the required
cardinality of min {?minCount} and max {?maxCount}" .
}
WHERE {
{
FILTER (bound(?minCount) && (spl:objectCount(?this,
?predicate) < ?minCount)) .
}
UNION
{
FILTER (bound(?maxCount) && (spl:objectCount(?this,
?predicate) > ?maxCount)) .
}
}"""^^xsd:string ] ;
spin:constraint [ a spl:Argument ;
spl:predicate spl:predicate ;
spl:valueType rdf:Property
] ,
[ a spl:Argument ;
spl:predicate spl:minCount ;
spl:valueType xsd:integer ;
spl:optional "true"^^xsd:boolean
] ,
[ a spl:Argument ;
spl:predicate spl:maxCount ;
spl:valueType xsd:integer ;
spl:optional "true"^^xsd:boolean
] .
Can you see what's wrong here?
Thanks,
Martynas
graphityhq.com
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