Github user ajs6f commented on a diff in the pull request:
https://github.com/apache/jena/pull/287#discussion_r144359574
--- Diff: jena-arq/src/main/java/org/apache/jena/query/Dataset.java ---
@@ -113,4 +113,9 @@
* The dataset can not be used for query after this call.
*/
public void close() ;
+
+ /**
+ * @return Whether this {@code Dataset} is empty of triples, whether
in the default graph or in any named graph.
--- End diff --
@afs Better?---
