/**
* Perform the {@link QueryExecution} once.
*
* @param action
* @param queryExecution
* @param query
* @param queryStringLog Informational string created from the initial query.
* @return
*/
protected SPARQLResult executeQuery(
HttpAction action, QueryExecution queryExecution, Query query, String queryStringLog) {
setAnyTimeouts(queryExecution, action);
if (query.isSelectType()) {
ResultSet rs = queryExecution.execSelect();
// Force some query execution now.
// If the timeout-first-row goes off, the output stream has not
// been started so the HTTP error code is sent.
rs.hasNext();
// If we wanted perfect query time cancellation, we could consume
// the result now to see if the timeout-end-of-query goes off.
// rs = ResultSetFactory.copyResults(rs) ;
// action.log.info(format("[%d] exec/select", action.id)) ;
return new SPARQLResult(rs);
}
if (query.isConstructType()) {
Dataset dataset = queryExecution.execConstructDataset();
// action.log.info(format("[%d] exec/construct", action.id));
return new SPARQLResult(dataset);
}
if (query.isDescribeType()) {
Model model = queryExecution.execDescribe();
// action.log.info(format("[%d] exec/describe", action.id)) ;
return new SPARQLResult(model);
}
if (query.isAskType()) {
boolean b = queryExecution.execAsk();
// action.log.info(format("[%d] exec/ask", action.id)) ;
return new SPARQLResult(b);
}
ServletOps.errorBadRequest("Unknown query type - " + queryStringLog);
return null;
}
@Override
protected void runTestForReal() throws Throwable {
Query query = null;
try {
try {
query = queryFromTestItem(testItem);
} catch (QueryException qEx) {
query = null;
qEx.printStackTrace(System.err);
fail("Parse failure: " + qEx.getMessage());
throw qEx;
}
Dataset dataset = setUpDataset(query, testItem);
if (dataset == null && !doesQueryHaveDataset(query)) fail("No dataset for query");
QueryExecution qe = null;
if (dataset == null) qe = QueryExecutionFactory.create(query, queryFileManager);
else qe = QueryExecutionFactory.create(query, dataset);
try {
if (query.isSelectType()) runTestSelect(query, qe);
else if (query.isConstructType()) runTestConstruct(query, qe);
else if (query.isDescribeType()) runTestDescribe(query, qe);
else if (query.isAskType()) runTestAsk(query, qe);
} finally {
qe.close();
}
} catch (IOException ioEx) {
// log.debug("IOException: ",ioEx) ;
fail("IOException: " + ioEx.getMessage());
throw ioEx;
} catch (NullPointerException ex) {
throw ex;
} catch (Exception ex) {
ex.printStackTrace(System.err);
fail("Exception: " + ex.getClass().getName() + ": " + ex.getMessage());
}
}