From 2dd284d3000ec9c0d39a5ded84dae63038c564ea Mon Sep 17 00:00:00 2001
From: banjjoknim <zhfxmtkachdt@daum.net>
Date: Wed, 9 Nov 2022 16:07:24 +0900
Subject: [PATCH] =?UTF-8?q?feat=20:=20SOLID=20-=20ISP=20=EC=83=98=ED=94=8C?=
 =?UTF-8?q?=20=EC=BD=94=EB=93=9C=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../solid-design-pattern-sample/README.md     | 10 ++++++++
 .../solid/isp/after/CinemaControllerAfter.kt  | 25 +++++++++++++++++++
 .../solid/isp/after/ReservationService.kt     |  7 ++++++
 .../solid/isp/after/ReservationServiceAfter.kt | 11 ++++++++
 .../solid/isp/after/SeatStatusService.kt      |  7 ++++++
 .../solid/isp/after/SeatStatusServiceAfter.kt | 12 +++++++++
 .../solid/isp/before/CinemaControllerBefore.kt | 25 +++++++++++++++++++
 .../solid/isp/before/CinemaService.kt         | 10 ++++++++
 .../solid/isp/before/ReservationServiceBefore.kt | 16 ++++++++++++
 .../solid/isp/before/SeatStatusServiceBefore.kt | 17 +++++++++++++
 .../solid/isp/common/Reservation.kt           | 11 ++++++++
 .../solid/isp/common/SeatStatus.kt            |  5 ++++
 .../solid/isp/common/SeatStatusType.kt        |  6 +++++
 13 files changed, 162 insertions(+)
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/CinemaControllerAfter.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationService.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationServiceAfter.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusService.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusServiceAfter.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaControllerBefore.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaService.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/ReservationServiceBefore.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/SeatStatusServiceBefore.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/Reservation.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatus.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatusType.kt

diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md b/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md
index 08e3c6a..bf75c9e 100644
--- a/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md	
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md	
@@ -37,6 +37,16 @@
 
 - 좌표를 입력하면 해당 좌표로 이동수단의 위치가 변한다.
 
+### ISP(Interface Segregation Principle)
+
+- 인터페이스 분리 원칙
+- 특정 클라이언트를 위한 인터페이스 여러 개가 범용 인터페이스 하나보다 낫다.
+
+#### 구현 요구사항
+
+- 영화 상영관 좌석 현황을 조회할 수 있다.
+- 영화표 예매를 진행할 수 있다.
+
 ## 참고자료
 
 - [SOLID (객체 지향 설계)](https://ko.wikipedia.org/wiki/SOLID_(%EA%B0%9D%EC%B2%B4_%EC%A7%80%ED%96%A5_%EC%84%A4%EA%B3%84)) 
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/CinemaControllerAfter.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/CinemaControllerAfter.kt
new file mode 100644
index 0000000..4998ee9
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/CinemaControllerAfter.kt	
@@ -0,0 +1,25 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.after
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RequestMapping("/cinemas")
+@RestController
+class CinemaControllerAfter(
+    private val seatStatusService: SeatStatusServiceAfter,
+    private val reservationService: ReservationServiceAfter
+) {
+    @GetMapping("/with-isp-get-seat-status")
+    fun getSeatStatus(): SeatStatus {
+        return seatStatusService.getSeatStatus()
+    }
+
+    @PostMapping("/with-isp-make-reservation")
+    fun makeReservation(): Reservation {
+        return reservationService.makeReservation()
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationService.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationService.kt
new file mode 100644
index 0000000..85b60ef
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationService.kt	
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.after
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+
+interface ReservationService {
+    fun makeReservation(): Reservation
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationServiceAfter.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationServiceAfter.kt
new file mode 100644
index 0000000..c30265c
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/ReservationServiceAfter.kt	
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.after
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import org.springframework.stereotype.Service
+
+@Service
+class ReservationServiceAfter : ReservationService {
+    override fun makeReservation(): Reservation {
+        return Reservation(seat = "A1", id = 1L)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusService.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusService.kt
new file mode 100644
index 0000000..dc53340
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusService.kt	
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.after
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+
+interface SeatStatusService {
+    fun getSeatStatus(): SeatStatus
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusServiceAfter.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusServiceAfter.kt
new file mode 100644
index 0000000..3a97a82
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/after/SeatStatusServiceAfter.kt	
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.after
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatusType
+import org.springframework.stereotype.Service
+
+@Service
+class SeatStatusServiceAfter : SeatStatusService {
+    override fun getSeatStatus(): SeatStatus {
+        return SeatStatus(SeatStatusType.CAN_RESERVATION)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaControllerBefore.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaControllerBefore.kt
new file mode 100644
index 0000000..40791ca
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaControllerBefore.kt	
@@ -0,0 +1,25 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.before
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RequestMapping("/cinemas")
+@RestController
+class CinemaControllerBefore(
+    private val seatStatusService: SeatStatusServiceBefore,
+    private val reservationService: ReservationServiceBefore,
+) {
+    @GetMapping("/none-isp-get-seat-status")
+    fun getSeatStatus(): SeatStatus {
+        return seatStatusService.getSeatStatus()
+    }
+
+    @PostMapping("/none-isp-make-reservation")
+    fun makeReservation(): Reservation {
+        return reservationService.makeReservation()
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaService.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaService.kt
new file mode 100644
index 0000000..538a7aa
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/CinemaService.kt	
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.before
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+
+interface CinemaService {
+    fun makeReservation(): Reservation
+
+    fun getSeatStatus(): SeatStatus
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/ReservationServiceBefore.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/ReservationServiceBefore.kt
new file mode 100644
index 0000000..5680588
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/ReservationServiceBefore.kt	
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.before
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+import org.springframework.stereotype.Service
+
+@Service
+class ReservationServiceBefore : CinemaService {
+    override fun makeReservation(): Reservation {
+        return Reservation(seat = "A1", id = 1L)
+    }
+
+    override fun getSeatStatus(): SeatStatus {
+        throw UnsupportedOperationException("좌석 현황 조회는 지원하지 않습니다.") // 불필요함에도 불구하고 구현해주어야 한다.
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/SeatStatusServiceBefore.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/SeatStatusServiceBefore.kt
new file mode 100644
index 0000000..db6a95e
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/before/SeatStatusServiceBefore.kt	
@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.before
+
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.Reservation
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatus
+import com.banjjoknim.soliddesignpatternsample.solid.isp.common.SeatStatusType
+import org.springframework.stereotype.Service
+
+@Service
+class SeatStatusServiceBefore : CinemaService {
+    override fun makeReservation(): Reservation {
+        throw UnsupportedOperationException("영화표 예매는 지원하지 않습니다.") // 불필요함에도 불구하고 구현해주어야 한다.
+    }
+
+    override fun getSeatStatus(): SeatStatus {
+        return SeatStatus(SeatStatusType.CAN_RESERVATION)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/Reservation.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/Reservation.kt
new file mode 100644
index 0000000..c3cdfad
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/Reservation.kt	
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.common
+
+import javax.persistence.Entity
+import javax.persistence.Id
+
+@Entity
+class Reservation(
+    val seat: String,
+    @Id
+    val id: Long = 0L
+)
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatus.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatus.kt
new file mode 100644
index 0000000..6b4e700
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatus.kt	
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.common
+
+data class SeatStatus(
+    val type: SeatStatusType
+)
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatusType.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatusType.kt
new file mode 100644
index 0000000..182c281
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/solid/isp/common/SeatStatusType.kt	
@@ -0,0 +1,6 @@
+package com.banjjoknim.soliddesignpatternsample.solid.isp.common
+
+enum class SeatStatusType {
+    CAN_RESERVATION,
+    CANNOT_RESERVATION
+}