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Re: Is there a simpler way to map Hibernate?

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On 9/1/2023 9:25 AM, e.d.pro...@gmail.com wrote:
>> So you are not using JPA with Hibernate as implementation - you are
>> using Hibernate with JPA annotations.
>> 
>> I believe that is supposed to work, but most people changed from
>> Hibernate with XML to JPA with annotations like 15 years ago.
>> 
>> I have no idea about how Hibernate with JPA annotations. work.
>> 
>> Any chance that you could change to JPA?
>> 
> What is "JPA with Hibernate" versus "Hibernate with JPA annotations"?
> Is this just about using persistence.xml files with EntityManager?
> That still requires declaring every entity class in the xml file and
> duplicating that for test? What is the advantage?

Yes. Basically:

EntityManagerFactory emf = Persistence.createEntityManagerFactory(confnam);
EntityManager em = emf.createEntityManager();

instead of:

SessionFactory sf = new Configuration().configure(new 
File(conffile)).buildSessionFactory();
Session s = sf.openSession();

(your setup code is a little bit more advanced but above
is the basic version)

I see two advantages.

1) You switch to a mode that almost everyone else is using
    so a lot better support and a lot easier to get help.

2) It is correct that the most common approach is to
    have a persistence.xml with:

       <class>p.C1</class>
       <class>p.C2</class>
       <class>p.C3</class>
       <exclude-unlisted-classes/>

but you could try with:

       <exclude-unlisted-classes>false</exclude-unlisted-classes>

I am not an expert in the finer points of JPA, but I remember
it as that false should work in Java EE context and that it
is not guaranteed to work in SE context but usually does.

Arne

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Thread

Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-08-31 04:49 -0700
  Re: Is there a simpler way to map Hibernate? Arne Vajhøj <arne@vajhoej.dk> - 2023-08-31 18:46 -0400
    Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-01 04:08 -0700
      Re: Is there a simpler way to map Hibernate? Arne Vajhøj <arne@vajhoej.dk> - 2023-09-01 08:27 -0400
        Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-01 05:49 -0700
          Re: Is there a simpler way to map Hibernate? Arne Vajhøj <arne@vajhoej.dk> - 2023-09-01 09:06 -0400
            Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-01 06:25 -0700
              Re: Is there a simpler way to map Hibernate? Arne Vajhøj <arne@vajhoej.dk> - 2023-09-01 09:37 -0400
                Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-01 12:48 -0700
                Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-05 12:34 -0700
                Re: Is there a simpler way to map Hibernate? Arne Vajhøj <arne@vajhoej.dk> - 2023-09-10 20:48 -0400
                Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-11 04:19 -0700
                Re: Is there a simpler way to map Hibernate? "e.d.pro...@gmail.com" <e.d.programmer@gmail.com> - 2023-09-11 05:23 -0700

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