cacontology-infrastructure-shapes:InfrastructureParticipationShape leaf node

@prefix cacontology-infrastructure: <https://cacontology.projectvic.org/infrastructure#> .
@prefix cacontology-infrastructure-shapes: <https://cacontology.projectvic.org/infrastructure/shapes#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
cacontology-infrastructure-shapes:InfrastructureParticipationShape a sh:NodeShape ;
    rdfs:label "Infrastructure Participation Shape"@en ;
    rdfs:comment "Validates gUFO participation constraints for platform infrastructure."@en ;
    sh:sparql [ sh:message "Platform infrastructure must be associated with hosting providers or management roles (gUFO participation constraint)."@en ;
            sh:select """
            SELECT $this
            WHERE {
                $this rdf:type cacontology-infrastructure:PlatformInfrastructure .
                FILTER NOT EXISTS {
                    { $this cacontology-infrastructure:hostedBy ?provider } UNION
                    { ?role a gufo:Role ; cacontology-infrastructure:manages $this }
                }
            }
        """ ] ;
    sh:targetClass cacontology-infrastructure:PlatformInfrastructure .