Maybe is a configuration of springboot...i load hibernate with spring..but when i execute my example, when i do entitmanager.persist(customer), hibernate first execute a select of customertype table and them the insert of customer table.
I was thinking that JPA first try to find on the database if the PrimaryKey of the child object exists....but it seems openjpa don't do it. Regards. 2016-08-03 22:24 GMT+02:00 Roberto Cortez <radcor...@yahoo.com.invalid>: > Hi Enrique, > Strange. I was almost certain that Hibernate would work that way as well. > If just leave the defaults one, the EntityManager doesn't know what to do > with a detached entity instance. > I've tried with one sample project and this is what I get with > Hibernate:org.hibernate.TransientPropertyValueException: object > references an unsaved transient instance > > If I add the Cascade then it works fine. > Maybe you have Cascade set up somewhere else? > Cheers,Roberto > From: Enrique Rodríguez Lasterra <laste...@gmail.com> > To: users@openjpa.apache.org > Sent: Wednesday, August 3, 2016 5:29 AM > Subject: Migration from hibernate > > Hi, i'm new on the list. I'm migrating a project from tomcat+hibernate to > websphere+openjpa2.2.3 > > My problem is with a @ManyToOne relationship. > > I have a Customer entity with a relationship with CustomerType. > > When i create a new customer i don't whant to save-update customertype. > > This pseudo-code work with hibernate > > Customer c = new Customer(); > CustomerType ct = new CustomerType(); > ct.setPk(1); > c.setCustomerType(ct); > .... > entityManager.persist(c); > > When i execute it with openjpa, i get an exception that CustomerType is > detached and i shoud user Cascade.Persist, but this is not what i want. > > I know that one way to resolve the problema is to find CustomerType on > EntityManager instead to create a new object for that... but this change is > very complex in my application. > > Is this a problem of openjpa or hibernate implementation? > > > > -- > _______________________________ > Enrique Rodriguez Lasterra > lasterra AT gmail DOT com > > > > -- _______________________________ Enrique Rodriguez Lasterra lasterra AT gmail DOT com
