[JENA-1382] NPE in ResultSetClosable

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Jena 3.2.0, Jena 3.3.0, Jena 3.4.0
• Fix Version/s: Jena 3.5.0
• Component/s: ARQ
• Assignee: Andy Seaborne
• Reporter: Lorenz Bühmann
• Created: 19/Aug/17 17:45
• Updated: 02/Nov/17 22:10
• Resolved: 20/Aug/17 09:07

Description

Using ResultSetClosable leads to a NPE for QueryExecution objects that have been created based on the query string only, i.e. without a parsed Query object because of the sanity check regarding SELECT queries.

Example:

QueryEngineHttp qe = new QueryEngineHttp("http://dbpedia.org/sparql", "select * { ?s ?p ?o } limit 1");
try(ResultSetCloseable rs = ResultSetCloseable.closableResultSet(qe)) {
  rs.hasNext();
}