Use target_class instead of uri as default

src/coscine/metadata.py

@@ -659,6 +659,20 @@ class ApplicationProfile(ApplicationProfileInfo):
             profile = self.client.application_profile(str(row[0]))
             self.graph += profile.graph
 
+    @property
+    def target_class(self) -> str:
+        """
+        Returns the target class of the application profile.
+        If not target class is present, the application profile URI is used
+        as a fallback.
+        """
+        results = self.query(
+            r"SELECT ?targetClass WHERE { ?_ sh:targetClass ?targetClass . }"
+        )
+        if len(results) != 1 or len(results[0]) != 1:
+            return self.uri
+        return results[0][0]
+
     def query(self, query: str, **kwargs) -> list:
         """
         Performs a SPARQL query on the application profile and
@@ -1005,7 +1019,7 @@ class MetadataForm:
         graph.add((
             root,
             rdflib.RDF.type,
-            rdflib.URIRef(self.resource.application_profile.uri)
+            rdflib.URIRef(self.resource.application_profile.target_class)
         ))
         for field in self._fields:
             if field.values: