How to delete parent object without delete the child object?

Question

How can I delete the parent object without deleting child object in Hibernate? In my case a child has multiple parents. I just want to remove one parent object from child object.

Maciej Kowalski · Accepted Answer · 2017-02-03 07:21:31Z

4

Yes, though you must remember about two things:

1) Your child entity must allow null on the foreign key to the child

2) You must remember to NOT have CascadeType.DELETE on the @OneToMany relationship in the parent.

3) Before removing the parent, clear the children collection first:

parent.setChildren(null);
session.delete(parent);

answered Feb 3, 2017 at 7:21

Maciej Kowalski

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2 Comments

Maciej Kowalski Over a year ago

any luck with the tests?

Renis1235 Over a year ago

This will not work. You have to fo through all the children and set their parent null and not the other way around.

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