How to set a default query timeout with JPA and Hibernate?

Question

I am doing some big queries on my database with Hibernate and I sometimes hit timeouts. I would like to avoid setting the timeout manually on every Query or

Answer 1

Yes, you can do that.

As I explained in this article, all you need to do is to pass the JPA query hint as a global property:

Now, when executing a JPQL query that will timeout after 1 second:

List posts = entityManager
.createQuery(
    "select p " +
    "from Post p " +
    "where function('1 >= ALL ( SELECT 1 FROM pg_locks, pg_sleep(2) ) --',) is ''", Post.class)
.getResultList();

Hibernate will throw a query timeout exception:

SELECT p.id AS id1_0_,
       p.title AS title2_0_
FROM post p
WHERE 1 >= ALL (
    SELECT 1
    FROM pg_locks, pg_sleep(2)
) --()=''

-- SQL Error: 0, SQLState: 57014
-- ERROR: canceling statement due to user request

For more details about setting a timeout interval for Hibernate queries, check out this article.