Dear Experts,
I am using JAVA JENA 264. I need to set execution time out in a particular
SELECT query
(which is coming from some iterative queries). That is, for example, if a
particular SELECT query execution time is more than 5 Mins, I will go for
another query. Code snippet could be as below:
-----------------------
String query = ".... ";
Query sparql1 = QueryFactory.create(query, Syntax.syntaxSPARQL_11);
VirtuosoQueryExecution vqe1 = VirtuosoQueryExecutionFactory.create(sparql1,
dataset);
ResultSet results1 = vqe1.execSelect();
----------------------
I researched that there might be a method in VirtuosoQueryExecution
possibly named
"settimeout". However, with Jena 264, I not finding such method. Can you
please guide me.
By the way,
I tried work-around by setting up connection time for dataset, such as
---------------------
VirtGraph dataset = new VirtGraph (url, "dba", "dba");
try {
dataset.getConnection().createStatement().execute("set
result_timeout = 300000");
}
catch(SQLException e) {
e.printStackTrace();
}
-------------------------
However, it does not suffice my requirement because, if I do so, in some
cases, my query gets executed but I have not finish catching result from
the ResultSet. So, I need, if execution is finished (i.e.,
vqe1.execSelect(); successfully finished within 5 Mins), I want to catch my
result. But with this work-around, I can not catch my ResultSet.
-
Regards
Mizanur
NII, Japan
