[FIXED] Exception while iterating over PersistentSet in Hibernate

Issue

I have the following simple code iterating over a PersistentSet:

if (workers instanceof PersistentSet) {
    for (Object worker : workers) { // failed to lazily initialize a collection of role: ...

    }
}

I get the following exception:

failed to lazily initialize a collection of role...

What is the wrong thing in my code?

Solution

You need add to your field mapping fetch = FetchType.EAGER.Hibernate use Lazy-loading by default.

Answered By - Tkachuk_Evgen
Answer Checked By - David Marino (JavaFixing Volunteer)