view tests/misc-queries/test-query-plugin-output-types @ 19:bd1deebe1129

* Set track metadata only if non-empty (the RDF feature writer tests for
  existence rather than non-emptiness when determining whether to write
  a track)

PREFIX vamp: <http://purl.org/ontology/vamp/>
PREFIX examples: <http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#>

SELECT ?output_id ?output_type ?feature_type ?event_type ?unit
FROM <http://vamp-plugins.org/rdf/plugins/vamp-example-plugins>

WHERE {
      ?plugin a vamp:Plugin .
      ?plugin vamp:identifier "percussiononsets" .
      ?plugin vamp:output_descriptor ?output .
      ?output vamp:identifier ?output_id .
      ?output a ?output_type .
      OPTIONAL { ?output vamp:computes_feature_type ?feature_type } .
      OPTIONAL { ?output vamp:computes_event_type ?event_type } .
      OPTIONAL { ?output vamp:unit ?unit } .
}