cacontology-international:InternationalReferralCrossReferenceShape leaf node

@prefix cacontology-international: <https://cacontology.projectvic.org/international#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
cacontology-international:InternationalReferralCrossReferenceShape a sh:NodeShape ;
    rdfs:label "International Referral Cross Reference Shape"@en ;
    rdfs:comment "Validates that international referrals have alerting and receiving partners."@en ;
    sh:sparql [ sh:message "International referral should have alerting partner and referral target."@en ;
            sh:select """
            SELECT $this
            WHERE {
                $this a cacontology-international:InternationalReferral .
                FILTER NOT EXISTS {
                    $this cacontology-international:alertingPartner ?alerter ;
                          cacontology-international:referredTo ?target .
                    FILTER (?alerter != ?target)
                }
            }
        """ ] ;
    sh:targetClass cacontology-international:InternationalReferral .