From 769576a8d5821a4acad0e4c1897e4c7e2ed0e1cb Mon Sep 17 00:00:00 2001
From: pricelees <priceelees@gmail.com>
Date: Sat, 2 Aug 2025 15:52:44 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20Auditing=20=EB=B0=8F=20Persist=20?=
 =?UTF-8?q?=EC=84=A4=EC=A0=95=EC=9D=B4=20=EB=8B=B4=EA=B8=B4=20BaseEntity?=
 =?UTF-8?q?=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../roomescape/RoomescapeApplication.kt       |  2 ++
 .../roomescape/common/entity/BaseEntity.kt    | 35 +++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 src/main/kotlin/roomescape/common/entity/BaseEntity.kt

diff --git a/src/main/kotlin/roomescape/RoomescapeApplication.kt b/src/main/kotlin/roomescape/RoomescapeApplication.kt
index aca20d20..be15c160 100644
--- a/src/main/kotlin/roomescape/RoomescapeApplication.kt
+++ b/src/main/kotlin/roomescape/RoomescapeApplication.kt
@@ -3,7 +3,9 @@ package roomescape
 import org.springframework.boot.Banner
 import org.springframework.boot.SpringApplication
 import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing
 
+@EnableJpaAuditing
 @SpringBootApplication
 class RoomescapeApplication
 
diff --git a/src/main/kotlin/roomescape/common/entity/BaseEntity.kt b/src/main/kotlin/roomescape/common/entity/BaseEntity.kt
new file mode 100644
index 00000000..439f62ef
--- /dev/null
+++ b/src/main/kotlin/roomescape/common/entity/BaseEntity.kt
@@ -0,0 +1,35 @@
+package roomescape.common.entity
+
+import jakarta.persistence.*
+import org.springframework.data.annotation.CreatedDate
+import org.springframework.data.annotation.LastModifiedDate
+import org.springframework.data.domain.Persistable
+import org.springframework.data.jpa.domain.support.AuditingEntityListener
+import java.time.LocalDateTime
+import kotlin.jvm.Transient
+
+@MappedSuperclass
+@EntityListeners(AuditingEntityListener::class)
+abstract class BaseEntity(
+    @Column(updatable = false)
+    @CreatedDate
+    var createdAt: LocalDateTime? = null,
+
+    @LastModifiedDate
+    var lastModifiedAt: LocalDateTime? = null,
+) : Persistable<Long> {
+
+    @Transient
+    private var isNewEntity: Boolean = true
+
+    @PostLoad
+    @PostPersist
+    fun markNotNew() {
+        isNewEntity = false
+    }
+
+    override fun isNew(): Boolean = isNewEntity
+
+    abstract override fun getId(): Long?
+
+}