persist Archives - IT Nursery

PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate

I have a JPA-persisted object model that contains a many-to-one relationship: an Account has many Transactions. A Transaction has one Account. Here’s a ...

May 17, 2022
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JPA EntityManager: Why use persist() over merge()?

EntityManager.merge() can insert new objects and update existing ones. Why would one want to use persist() (which can only create new objects)? 15 ...

April 15, 2022
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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate

This is a typical bidirectional consistency problem. It is well discussed in this link as well as this link. As per the articles ...

April 6, 2022
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