Spring: Is there an EntityManager for MongoDB?

Question

Spring

Hello! I don’t quite understand whether it is possible to work in Spring with MongoDb using JPA?
The main goal why I want to use EntityManager is that the application has only one instance for a specific entity (as I understand it, if you use repositories from spring data mongodb, then with each selection it will create a new instance).
Is it possible to set up an EntityManager for mongo, well, or are there other ways to solve my problem?
Thanks in advance!

Answer 1

First of all, I want to note that Spring Data is just a JPA add-on that automatically generates repositories. Under the hood is the same EntityManager. Which, by the way, on each selection of the same record from the database returns a new object.
In essence, the question: JPA is an object - relational mapping standard, and MongoDB is not a relational DBMS. That is, JPA is not needed. The only point in using it with MongoDB is to develop a generic data access layer that makes it easy to change the DBMS on the fly. And Spring Data is the best fit for such tasks.