XZ_relation_empty.shacl.ttl

# @see https://wiki.openstreetmap.org/wiki/Empty_relations
# @see overpass equivalent https://overpass-turbo.eu/s/1hot

# About discussion of automating this:
# - https://lists.openstreetmap.org/pipermail/talk/2021-April/086462.html
#   - (idea about detect clusters) https://lists.openstreetmap.org/pipermail/talk/2021-April/086476.html

PREFIX osma: <https://example.org/todo-onto-toplevel/>
PREFIX osmsh: <https://www.openstreetmap.org/validation/shacl/>
PREFIX osmx: <https://example.org/todo-xref/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sh: <http://www.w3.org/ns/shacl#>

osmsh:XZ_relation_empty
    a sh:NodeShape ;
    sh:targetClass osma:Relation  ;
    sh:property [
        sh:path osmx:hasmembers;
        sh:minCount 1 ;
        sh:message "Empty relation" ;
        # sh:severity sh:Warning ;
    ] ;
    # sh:closed true ;
    sh:ignoredProperties ( rdf:type ) ;
.