is the collection returned by sql predicate from a hazelcast map unmodifiable?

Question

is the collection returned by sql predicate from a hazelcast map unmodifiable? I am trying to add to the set which I receive from the sql predicate (on a hazelcast map) - I just need to confirm whether its modifiable or whether its my code which is causing the issue.

Set<UDC> testSet = new HashSet<UDC>();
testSet = (Set<UDC>) testMap.values(new SqlPredicate("testUUID != " + id + " AND testStatus = 1"));  //Set is not empty!

Any add operation on the set is throwing an UnsupportedOperationException. Thanks in advance!

Answer 1

Based on my initial testing, the set returned from the SQLPredicate is unmodifiable. I could not find any option to retrieve a modifiable set using the sqlpredicate (using hazelcast-2.5). I would be quite glad if I'm wrong! Hope it helps.