java - how do i pass EntityManager to @PostUpdate -


I want to save the history of changes, so in @PostUpdate, I want to create a new example of another entity and save it Is that how can I pass that unit to EntityManager?

You can get an example of this EntityManager as you would on any other:

1) Through injection in your classroom: 

  @ParisCenceTextX Entitemanager; // Inject your class

2) using EntityManagerFactory: 

  EntityManager em = EntityManagerFactory.getEntityManager ();

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