This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Data JPA 3.4.1!

Locking

To specify the lock mode to be used, you can use the @Lock annotation on query methods, as shown in the following example:

Example 1. Defining lock metadata on query methods

interface UserRepository extends Repository<User, Long> {

  // Plain query method
  @Lock(LockModeType.READ)
  List<User> findByLastname(String lastname);
}

This method declaration causes the query being triggered to be equipped with a LockModeType of READ. You can also define locking for CRUD methods by redeclaring them in your repository interface and adding the @Lock annotation, as shown in the following example:

Example 2. Defining lock metadata on CRUD methods

interface UserRepository extends Repository<User, Long> {

  // Redeclaration of a CRUD method
  @Lock(LockModeType.READ)
  List<User> findAll();
}