How does the operation merge affect the Entity objects of each of the four statuses?JPA Interview Questions for Freshers/JPA Interview Questions and Answers for Freshers & Experienced

How does the operation merge affect the Entity objects of each of the four statuses?

1) If the detached state, then either the data will be copied to the existing managed entity with the same primary key, or a new managed is created into which the data is copied,

1) If the Entity is new, then a new managed entity will be created into which the past data will be copied object,

2) If the status is managed, the operation is ignored, but the operation merge will work on the cascade-dependent Entity, if their status is not managed,

3) If the status is removed, exception will be thrown immediately or at the commit stage of the transaction.

Posted Date:- 2021-11-08 16:41:54

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