Resolved - @PreUpdate not working in JUnit test.

 



javax.persistence.PreUpdate

object need to be "dirty" to trigger...

obj.setColumn01("text");

repo.save(obj);

then make obj "dirty" before save to trigger @PreUpdate


obj.setColumn01("new text);
repo.save(obj);

Reference URL: https://www.javafixing.com/2021/12/fixed-preupdate-does-not-work-with.html

Solution

As you said, the callback method is called the second time, if the entity is detached or fetched again from DB.

I cannot explain it exactly, but can think of the scenario described here, when no dirty fields are identified before the second save() call and thus the @PreUpdate callback not called. Or it may be simply a bug within your version of EclipseLink.