feat: add BaseEntity

src/main/java/aplp/backend/core/common/entity/BaseEntity.java

@@ -0,0 +1,45 @@
+package aplp.backend.core.common.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Setter
+@MappedSuperclass
+public abstract class BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "created_by", length = 50, updatable = false)
+    private String createdBy;
+
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    @Column(name = "updated_by", length = 50)
+    private String updatedBy;
+
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
+
+    @Column(name = "deleted_by", length = 50)
+    private String deletedBy;
+
+    @PrePersist
+    protected void onCreate() {
+        this.createdAt = LocalDateTime.now();
+    }
+
+    @PreUpdate
+    protected void onUpdate() {
+        this.updatedAt = LocalDateTime.now();
+    }
+}