JPA EntityManager question?

When sides of bidirectional relationship disagree, a state of the owning side (i.e. A side without mappedBy ) is persisted to the database. So, you need to modify both sides consitently.

When sides of bidirectional relationship disagree, a state of the owning side (i.e. A side without mappedBy) is persisted to the database. So, you need to modify both sides consitently: for (Part p: corolla.getParts()) { p.

SetCar(null); } corolla.getParts().clear().

The bit about the owning side being persisted is what I needed. Thanks very much for this! – mdtsandman Jun 27 at 14:10.

It looks fine, however while removing an entity from your database you should be using: EntityManager.remove.

I don't think this is what I was looking for: I don't want to remove the parts from the DB, but rather remove their association with the particular car. Thanks, though :) – mdtsandman Jun 27 at 14:02.

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