From 4bd64dc657a0eb9663063fc0bb98d42fb0043c51 Mon Sep 17 00:00:00 2001
From: MyunghyunNero <mh1kim0910@gmail.com>
Date: Sun, 26 Nov 2023 14:53:04 +0900
Subject: [PATCH] =?UTF-8?q?feat=20:=20=EC=A2=8B=EC=95=84=EC=9A=94=20?=
 =?UTF-8?q?=EB=88=84=EB=A5=BC=EC=8B=9C=20=EC=A2=8B=EC=95=84=EC=9A=94=20?=
 =?UTF-8?q?=EC=88=98=20=EB=8F=99=EC=8B=9C=EC=84=B1=20=EB=AC=B8=EC=A0=9C=20?=
 =?UTF-8?q?=ED=95=B4=EA=B2=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../repository/program/ProgramRespository.java     | 14 +++++++-------
 .../service/favorite/FavoriteServiceImpl.java      |  2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/main/java/kusitms/gallae/repository/program/ProgramRespository.java b/src/main/java/kusitms/gallae/repository/program/ProgramRespository.java
index f586c88..e9c8a8f 100644
--- a/src/main/java/kusitms/gallae/repository/program/ProgramRespository.java
+++ b/src/main/java/kusitms/gallae/repository/program/ProgramRespository.java
@@ -1,9 +1,13 @@
 package kusitms.gallae.repository.program;
 
+import jakarta.persistence.LockModeType;
 import kusitms.gallae.domain.Program;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Lock;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 import java.util.Optional;
@@ -12,13 +16,9 @@ public interface ProgramRespository extends JpaRepository<Program, Long> {
     @Override
     Optional<Program> findById(Long programId);
 
-    Page<Program> findAllByProgramTypeOrderByCreatedAtDesc(String programType , Pageable pageable);
-
-    Page<Program> findProgramByProgramNameContaining(String programName, Pageable pageable);
-
-    List<Program> findTop4ByOrderByCreatedAtDesc();
-
-    List<Program> findTop4ByOrderByProgramLikeDesc();
+    @Lock(LockModeType.PESSIMISTIC_WRITE)
+    @Query("select p from Program p where p.id = :programId")
+    Optional<Program> findWithIdForUpdate(@Param("programId") Long programId);
 
     Program findByUserIdAndStatus(Long id, Program.ProgramStatus programStatus);
 
diff --git a/src/main/java/kusitms/gallae/service/favorite/FavoriteServiceImpl.java b/src/main/java/kusitms/gallae/service/favorite/FavoriteServiceImpl.java
index 8a1efd0..9cad426 100644
--- a/src/main/java/kusitms/gallae/service/favorite/FavoriteServiceImpl.java
+++ b/src/main/java/kusitms/gallae/service/favorite/FavoriteServiceImpl.java
@@ -57,7 +57,7 @@ public class FavoriteServiceImpl implements FavoriteService {
     @Override
     public void postFavorite(String username, Long programId) {
         User user = userRepository.findById(Long.valueOf(username)).get();
-        Program program = programRespository.findById(programId).get();
+        Program program = programRespository.findWithIdForUpdate(programId).get();
         Favorite favorite = favoriteRepository.findByUserAndProgram(user,program).orElse(null);
         if(favorite == null ) {
             program.setProgramLike(program.getProgramLike() + 1);