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get generated key

 
Greenhorn
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Hi again!
The EntityManager.persist(EntityBean) method doesn't return the generated Id value by the Database...how can i obtain it?

public void create(Tbcustomer tbcustomer) {
em.persist(tbcustomer);
}

I'll try to implements a query or use annotations like @GeneratedValue...
Somebody can help me?
 
Ranch Hand
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It sets the value (or values) in the object you passed it.

 
riccardo alfrilli
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Tnx for reply!unfortuntely i have an exception,here is my code:


Maybe the @GeneratedValue annotation is wrong(I try also @GeneratedValue(strategy=TABLE),@GeneratedValue(strategy=IDENTITY))
 
riccardo alfrilli
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Ok,now it's work...I have to set the id(that was an Integer) with initial value of null,not 0!
 
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