JPA Hibernate Call Postgres Function Void Return MappingException:

Question

I have a problem where I am getting an: org.hibernate.MappingException: No Dialect mapping for JDBC type: 1111 when trying to call a postgres function using JPA cre

Answer 1

For future visitors of this issue, a cast would have worked too. posted on this thread as well

public void runRequestCleanup() {
    String queryString = "SELECT cast(a_function_that_hibernate_chokes_on() as text)";
    Query query = em.createNativeQuery(queryString);
    query.getSingleResult();
}