JPA：通过给定列的值列表获取实体列表

Question

I am new to JPA and Hibernate.

In one use case, I need to fetch all users from DB with associated email present in given email list.

To do this, I have written a custom JPA query as follows:

    @Query("SELECT u from User u where u.email in :emailIds")
    List<User> findUsersByEmailIds(@Param("emailIds") List<String> emailIdList);

But, I would like to know, is there any better way to do the same?

Answer 1

As commented by Vishnu, here is the explanation:

Assuming in your User entity you have a field like this:

private String email;

Then in your repository you can go like this:

List<User> findByEmailIn(List<String> emailIdList);

The important key thing to notice here is the Capital E in findByEmailIn while in your entity this field was email (small e). This way you can eliminate the @Query statement completely.