Have a very simple little ontology with some shapes that all displays and
behaves as expected in the UI for an ontology asset until I turn on
"problems and suggestions", then some (but not all) classes throw a
exception report on focus.
problems and suggestions on the graph claims to generate some results but
fails to present.
digging into the underlying graphql queries if fails on the field
"focusNode { uri label }"
with the following ("best practice" completely opaque NPE :-) ):
Exception while fetching data (/graphReport/profile) : null
java.lang.NullPointerException
at
org.topbraid.shaclx.graphql.query.engine.ResultsSupport.lambda$2(ResultsSupport.java:89)
at
graphql.execution.ExecutionStrategy.fetchField(ExecutionStrategy.java:222)
I ran SHACL validation on the shapes in TBC- no issues.
class it fails on look like this:
:X
a owl:Class ;
a sh:NodeShape ;
rdfs:comment "a comment" ;
rdfs:isDefinedBy : ;
rdfs:label "A label" ;
rdfs:subClassOf :Y;
.
where :Y is another class that looks exactly the same and doesnt have a
problem...
The set of classes available in graphql - querying the meta-shapes includes
all the classes.
The available classes select box in the graphql link on the export tab has
only one I can discover (:Z a sibling of :X)
GraphQL allows me to search on that one but not the others
if i hack the query
http://localhost:8083/tbl/graphql/surveylineobs/%3AOccupationObservation
then it seems happy to query for instances (none as expected - but no
errors)
am i missing something obvious?
are there other diagnostic approaches I can use?
Can we entreat as users never to be faced with NPEs and always to indicate
what thing raised the error..
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