cacontology-partnerships-shapes:PartnershipParticipationShape leaf node

@prefix cacontology-partnerships: <https://cacontology.projectvic.org/partnerships#> .
@prefix cacontology-partnerships-shapes: <https://cacontology.projectvic.org/partnerships/shapes#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
cacontology-partnerships-shapes:PartnershipParticipationShape a sh:NodeShape ;
    rdfs:label "Partnership Participation Shape"@en ;
    rdfs:comment "Validates gUFO participation constraints for partnerships."@en ;
    sh:sparql [ sh:message "Partnership must have at least 2 participating organizations (gUFO participation constraint)."@en ;
            sh:select """
            SELECT $this
            WHERE {
                $this rdf:type cacontology-partnerships:PublicPrivatePartnership .
                {
                    SELECT $this (COUNT(DISTINCT ?partner) AS ?partnerCount)
                    WHERE {
                        $this cacontology-partnerships:includesPartner ?partner .
                    }
                    GROUP BY $this
                }
                FILTER (?partnerCount < 2)
            }
        """ ] ;
    sh:targetClass cacontology-partnerships:PublicPrivatePartnership .