Part 12: Add SixthUserRepository.java

Author: JcoderPaul

Spring_part_12/src/main/java/spring/oldboy/database/repository/user_repository/SixthUserRepository.java

@@ -0,0 +1,30 @@
+package spring.oldboy.database.repository.user_repository;
+
+/* Part 10: Lesson 55 - применение аннотаций @Lock и @QueryHints в запросах к БД */
+
+import jakarta.persistence.LockModeType;
+import jakarta.persistence.QueryHint;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Lock;
+import org.springframework.data.jpa.repository.QueryHints;
+import org.springframework.stereotype.Repository;
+import spring.oldboy.database.entity.User;
+
+import java.time.LocalDate;
+import java.util.List;
+
+/* Изменим наш класс на интерфейс и расширим JpaRepository */
+@Repository
+public interface SixthUserRepository extends JpaRepository<User, Long> {
+
+    /* Part 10: Lesson 55: Применим @Lock */
+    @Lock(LockModeType.PESSIMISTIC_READ)
+    List<User> findTop3ByBirthDateBefore(LocalDate birthDate, Sort sort);
+
+    /* Part 10: Lesson 55: Применим @Lock */
+    @QueryHints(@QueryHint(name = "org.hibernate.fetchSize", value = "1"))
+    @Lock(LockModeType.PESSIMISTIC_WRITE)
+    List<User> findTop2ByBirthDateBefore(LocalDate birthDate, Sort sort);
+
+}