lib/rdf/model/statement.rb in rdf-0.3.8 vs lib/rdf/model/statement.rb in rdf-0.3.9

@@ -111,10 +111,12 @@
     end
 
     ##
     # @return [Boolean]
     def valid?
-      has_subject? && has_predicate? && has_object?
+      has_subject?    && subject.valid? && 
+      has_predicate?  && predicate.valid? &&
+      has_object?     && object.valid?
     end
 
     ##
     # @return [Boolean]
     def asserted?