✨ Practice(#6) : RestaurantRepository 설정

spring/src/main/java/umc/spring/repository/restaurantRepository/RestaurantRepository.java

@@ -0,0 +1,7 @@
+package umc.spring.repository.restaurantRepository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import umc.spring.domain.Restaurant;
+
+public interface RestaurantRepository extends JpaRepository<Restaurant, Long>, RestaurantRepositoryCustom {
+}

spring/src/main/java/umc/spring/repository/restaurantRepository/RestaurantRepositoryCustom.java

@@ -0,0 +1,9 @@
+package umc.spring.repository.restaurantRepository;
+
+import umc.spring.domain.Restaurant;
+
+import java.util.List;
+
+public interface RestaurantRepositoryCustom {
+    List<Restaurant> dynamicQueryWithBooleanBuilder(String name, Float score);
+}

spring/src/main/java/umc/spring/repository/restaurantRepository/RestaurantRepositoryImpl.java

@@ -0,0 +1,36 @@
+package umc.spring.repository.restaurantRepository;
+
+import com.querydsl.core.BooleanBuilder;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Repository;
+import umc.spring.domain.QRestaurant;
+import umc.spring.domain.Restaurant;
+
+
+import java.util.List;
+
+@Repository
+@RequiredArgsConstructor
+public class RestaurantRepositoryImpl implements RestaurantRepositoryCustom{
+    private final JPAQueryFactory jpaQueryFactory;
+    private final QRestaurant restaurant = QRestaurant.restaurant;
+
+    @Override
+    public List<Restaurant> dynamicQueryWithBooleanBuilder(String name, Float score) {
+        BooleanBuilder predicate = new BooleanBuilder();
+
+        if (name != null) {
+            predicate.and(restaurant.name.eq(name));
+        }
+
+        if (score != null) {
+            predicate.and(restaurant.score.goe(4.0f));
+        }
+
+        return jpaQueryFactory
+                .selectFrom(restaurant)
+                .where(predicate)
+                .fetch();
+    }
+}