Spring Data JPA- 有两个 JPA 实体引用一个不是实体的数据库表

Question

Bit of a use case question. We want to create a new application with new JPA entity's X and Y, we want to be able to create a reference/relationship inside one of our JPA entity's x to an already existing database table z in the same database. We dont want this new application to be able to manage the data in table z( another application does that) but just essentially read from it. Essentially table X in JPA would have a collection of Z objects in a one to many relationship mapped by Z's primary key

Anyone got any insights of what we need to do to implement this?

Answer 1

My advice is to create a new database user with READ-WRITE permission on all the tables, except those where you need READ-ONLY permission. You will use this newly created user in datasource connection with the guarantee that your application will not execute unwanted modifications.

For formal correctness you should also mark readonly @Immutable read-only entities