fix for #245

Author: jbarrasa

src/main/java/n10s/onto/OntologyImporter.java

@@ -157,6 +157,9 @@ public void handleStatement(Statement st) {
           addStatement(st);
         } else if (st.getObject() instanceof BNode){
           //object is a blank node, probably a restriction
+          instantiate(vf.createIRI(parserConfig.getGraphConf().getBaseSchemaNamespace(), parserConfig.getGraphConf().getClassLabelName()),
+                  (IRI) st.getSubject());
+          mappedTripleCounter++;
           addLinkToClass((IRI)st.getSubject(), (BNode) st.getObject(), openSubClassRestrictions);
         }
         mappedTripleCounter++;
@@ -167,6 +170,9 @@ public void handleStatement(Statement st) {
           addStatement(st);
         } else if (st.getObject() instanceof BNode){
           //object is a blank node, probably a restriction
+          instantiate(vf.createIRI(parserConfig.getGraphConf().getBaseSchemaNamespace(), parserConfig.getGraphConf().getClassLabelName()),
+                  (IRI) st.getSubject());
+          mappedTripleCounter++;
           addLinkToClass((IRI)st.getSubject(), (BNode) st.getObject(),openEquivRestrictions);
         }
         mappedTripleCounter++;

src/test/java/n10s/onto/OntoProceduresTest.java

@@ -236,6 +236,22 @@ public class OntoProceduresTest {
           "                          owl:allValuesFrom :Animal\n" +
           "                        ] .";
 
+  String restrictionsOnResourcesImplicitClassTurtle = "" +
+          "@prefix : <http://www.semanticweb.org/jb/ontologies/2021/5/untitled-ontology-2#> .\n" +
+          "@prefix owl: <http://www.w3.org/2002/07/owl#> .\n" +
+          "@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .\n" +
+          "@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .\n" +
+          "@base <http://www.semanticweb.org/jb/ontologies/2021/5/untitled-ontology-2> .\n" +
+          "\n" +
+          "\n" +
+          ":Parent owl:equivalentClass [ rdf:type owl:Restriction ;\n" +
+          "                              owl:onProperty :hasChild ;\n" +
+          "                              owl:someValuesFrom :Person\n" +
+          "                            ] ;\n" +
+          "        rdfs:subClassOf [ rdf:type owl:Restriction ;\n" +
+          "                          owl:onProperty :hasPet ;\n" +
+          "                          owl:allValuesFrom :Animal\n" +
+          "                        ] .";
 
   String restrictionsWithDomAndRange = "" +
           "@prefix : <http://www.semanticweb.org/jb/ontologies/2021/5/untitled-ontology-2#> .\n" +
@@ -1143,7 +1159,7 @@ public void ontoSnippetImportRestrictions() throws Exception {
 
       Record next = importResults.next();
 
-      assertEquals(7L, next.get("triplesLoaded").asLong());
+      assertEquals(9L, next.get("triplesLoaded").asLong());
 
       assertEquals(9L, next.get("triplesParsed").asLong());
 
@@ -1183,7 +1199,7 @@ public void ontoSnippetImportRestrictions() throws Exception {
 
       next = importResults.next();
 
-      assertEquals(7L, next.get("triplesLoaded").asLong());
+      assertEquals(9L, next.get("triplesLoaded").asLong());
 
       assertEquals(9L, next.get("triplesParsed").asLong());
 
@@ -1217,6 +1233,29 @@ public void ontoSnippetImportRestrictions() throws Exception {
 
   }
 
+  @Test
+  public void ontoSnippetImportRestrictionsImplicitClass() throws Exception {
+    try (Driver driver = GraphDatabase.driver(neo4j.boltURI(),
+            Config.builder().withoutEncryption().build())) {
+
+      initialiseGraphDB(neo4j.defaultDatabaseService(),
+              "{ handleVocabUris: 'IGNORE' }");
+      Session session = driver.session();
+
+      Map<String, Object> params = new HashMap<>();
+      params.put("rdf", this.restrictionsOnResourcesImplicitClassTurtle);
+
+      Result importResults = session
+              .run("CALL n10s.onto.import.inline($rdf,'Turtle')", params);
+
+      Record next = importResults.next();
+
+      assertEquals(8L, next.get("triplesLoaded").asLong());
+
+      assertEquals(8L, next.get("triplesParsed").asLong());
+    }
+  }
+
   private void initialiseGraphDB(GraphDatabaseService db, String graphConfigParams) {
     db.executeTransactionally("CREATE CONSTRAINT n10s_unique_uri "
         + "ON (r:Resource) ASSERT r.uri IS UNIQUE");