Github user afs commented on a diff in the pull request: https://github.com/apache/jena/pull/287#discussion_r144382225 --- 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 -- Yes! +1 to merging.
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