hibernate to JPA: generator class=increment

[David Balažic]

Hi!

Can the following mapping be migrated from hibernate to JPA?

  
<id column="FOO_ID" name="fooId" type="long">
      <generator class="increment"/>
    </id>
  

That is with minimum other changes?

Currently I try

  
	@Id
	@GeneratedValue
	@Column(name="FOO_ID")
    private Long fooId;
  

But it gives this error when trying to persis an object:

SQL Error: 1364, SQLState: HY000
 Field 'FOO_ID' doesn't have a default value

Regards,
David

[Prabhat Jha]

Add how the value will be generated.

Like

@GeneratedValue(strategy=GenerationType.AUTO)

[David Balažic]

GenerationType has no value for "increment".

[Prabhat Jha]

I am not sure i got what you meant? Can you elaborate please ?

[David Balažic]

I guess I did not understand you.

What did you mean by "Add how the value will be generated. " ?

In old project it was created automatically by hibernate.

How to have the same with JPA?

[David Balažic]

David Balažic wrote:Hi!

Can the following mapping be migrated from hibernate to JPA?

  
<id column="FOO_ID" name="fooId" type="long">
      <generator class="increment"/>
    </id>
  

OK, a coworker found the solution:

  
    @Id
    @GenericGenerator(name = "mygen1", strategy = "increment")
    @GeneratedValue(generator = "mygen1")
    @Column(name="FOO_ID")
    private Long fooId;

In case anyone else asks the same question...


Regards,
David

[Michael Knoke]

Thanks for the solution. However, I note that going this way requires me to add the import for GenericGenerator which is: org.hibernate.annotations.GenericGenerator

I was always taught that if I was using just JPA then I would never see a "org.hibernate" import; is this just wrong?