From 695983bb8b92912173fff08bb0c4ad1a8da43d97 Mon Sep 17 00:00:00 2001
From: pricelees <priceelees@gmail.com>
Date: Mon, 7 Jul 2025 02:07:24 +0900
Subject: [PATCH] =?UTF-8?q?refactor:=20sealed=20class=20=EB=8F=84=EC=9E=85?=
 =?UTF-8?q?=20=EB=B0=8F=20=EC=A4=91=EB=B3=B5=20=EC=BD=94=EB=93=9C=20?=
 =?UTF-8?q?=EC=A0=9C=EA=B1=B0?=
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---
 .../com/sangdol/validation/DemoController.kt  |  4 ++--
 .../kotlin/com/sangdol/validation/DemoDTO.kt  | 24 +++++++++++--------
 .../com/sangdol/validation/DemoService.kt     |  7 +-----
 3 files changed, 17 insertions(+), 18 deletions(-)

diff --git a/src/main/kotlin/com/sangdol/validation/DemoController.kt b/src/main/kotlin/com/sangdol/validation/DemoController.kt
index ac0d4ad..a133eae 100644
--- a/src/main/kotlin/com/sangdol/validation/DemoController.kt
+++ b/src/main/kotlin/com/sangdol/validation/DemoController.kt
@@ -22,7 +22,7 @@ class DemoController(
 
     @PostMapping("/wrapper")
     fun wrapper(
-        @RequestBody @Valid request: WrapperRequest
+        @RequestBody @Valid request: DemoRequest.WrapperRequest
     ): ResponseEntity<Void> {
         demoService.doSomething(request)
 
@@ -31,7 +31,7 @@ class DemoController(
 
     @PostMapping("/primitive")
     fun primitive(
-        @RequestBody @Valid request: PrimitiveRequest
+        @RequestBody @Valid request: DemoRequest.PrimitiveRequest
     ): ResponseEntity<Void> {
         demoService.doSomething(request)
 
diff --git a/src/main/kotlin/com/sangdol/validation/DemoDTO.kt b/src/main/kotlin/com/sangdol/validation/DemoDTO.kt
index 5eb140c..c1ca7ca 100644
--- a/src/main/kotlin/com/sangdol/validation/DemoDTO.kt
+++ b/src/main/kotlin/com/sangdol/validation/DemoDTO.kt
@@ -3,19 +3,23 @@ package com.sangdol.validation
 import jakarta.validation.constraints.NotNull
 
 
-data class WrapperRequest(
-    @NotNull
-    val withAnnotation: String,
+sealed class DemoRequest {
 
-    val withoutAnnotation: String
-)
+    abstract val withAnnotation: Any
+    abstract val withoutAnnotation: Any
 
-data class PrimitiveRequest(
-    @NotNull
-    val withAnnotation: Int,
+    data class WrapperRequest(
+        @NotNull
+        override val withAnnotation: String,
+        override val withoutAnnotation: String
+    ) : DemoRequest()
 
-    val withoutAnnotation: Int
-)
+    data class PrimitiveRequest(
+        @NotNull
+        override val withAnnotation: Int,
+        override val withoutAnnotation: Int
+    ) : DemoRequest()
+}
 
 data class SolutionForPrimitive(
     @NotNull
diff --git a/src/main/kotlin/com/sangdol/validation/DemoService.kt b/src/main/kotlin/com/sangdol/validation/DemoService.kt
index daaa864..15794fc 100644
--- a/src/main/kotlin/com/sangdol/validation/DemoService.kt
+++ b/src/main/kotlin/com/sangdol/validation/DemoService.kt
@@ -14,13 +14,8 @@ class DemoService(
         request.value?.let { log.info { "value: ${request.value}" } }
     }
 
-    fun doSomething(request: WrapperRequest) {
+    fun doSomething(request: DemoRequest) {
         log.info { "wrapper requests: $request." }
         log.info { "withAnnotation: ${request.withAnnotation}, withoutAnnotation: ${request.withoutAnnotation}" }
     }
-
-    fun doSomething(request: PrimitiveRequest) {
-        log.info { "primitive requests: $request." }
-        log.info { "withAnnotation: ${request.withAnnotation}, withoutAnnotation: ${request.withoutAnnotation}" }
-    }
 }