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	JPA Primary Key : PersistenceUnitUtil util = emf. getPersistenceUnitUtil (); Object projectId = util. getIdentifier ... ; getIdentifier method takes one argument, a managed entity object, and returns the primary key. In the case
	PersistenceUnitUtil.getIdentifier(entity) - JPA Method JPA Method in jakarta.persistence.PersistenceUnitUtil Object getIdentifier ( Object entity ) Return the id of the entity. A generated id is not guaranteed to be available until after the database insert has occurred. Returns null if the entity does not yet have an id. Parameters
	InterfaceRef jakarta.persistence.PersistenceUnitUtil persistence context or cannot be loaded from the database Since: JPA 3.2 Object getIdentifier (Object
	AnnotationRef jakarta.persistence.Id . getIdentifier Since: JPA 1.0 The JPA Primary Key article explains how to use Id . This annotation is a marker annotation (with no attributes).
	Populating entity id before transaction commit you can force early auto ID setting by: Object id = emf. getPersistenceUnitUtil() . getIdentifier
	Entity listener - event instead of object = event.getPersister().hasIdentifierProperty() ? event.getPersister(). getIdentifier (event.getEntity

JPA Primary Key