From 27311dc1ebaafa1cbed62c0de429bdae5b416503 Mon Sep 17 00:00:00 2001
From: banjjoknim <zhfxmtkachdt@daum.net>
Date: Fri, 11 Nov 2022 12:59:12 +0900
Subject: [PATCH] =?UTF-8?q?feat=20:=20Design=20Pattern=20-=20=ED=94=84?=
 =?UTF-8?q?=EB=A1=9D=EC=8B=9C(Proxy)=20=ED=8C=A8=ED=84=B4=20=EA=B5=AC?=
 =?UTF-8?q?=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../solid-design-pattern-sample/README.md         |  6 ++++++
 .../designpattern/proxy/after/ExtendsProxyWallet.kt | 13 +++++++++++++
 .../designpattern/proxy/after/ImplementsProxyWallet.kt | 15 +++++++++++++++
 .../designpattern/proxy/after/Owner.kt            | 13 +++++++++++++
 .../designpattern/proxy/after/RealWallet.kt       | 13 +++++++++++++
 .../designpattern/proxy/after/Wallet.kt           |  7 +++++++
 .../designpattern/proxy/after/WalletApplication.kt |  9 +++++++++
 .../designpattern/proxy/before/Owner.kt           | 13 +++++++++++++
 .../designpattern/proxy/before/Wallet.kt          | 15 +++++++++++++++
 .../designpattern/proxy/before/WalletApplication.kt |  9 +++++++++
 10 files changed, 113 insertions(+)
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt
 create mode 100644 놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.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 c5635fd..a6d9f66 100644
--- a/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md	
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md	
@@ -95,6 +95,12 @@
 
 ### 프록시(Proxy) 패턴
 
+#### 구현 요구사항
+
+- 지갑의 주인은 지갑에 대해 입금 또는 출금을 진행할 수 있다.
+- 지갑의 동작은 입금 및 출금만 가능하도록 제한된다. 
+- 지갑에 대해 입금 또는 출금이 이루어질 때 메시지를 출력한다.
+
 ### 어댑터(Adapter) 패턴
 
 ### 옵저버(Observer) 패턴
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt
new file mode 100644
index 0000000..1a3e5ed
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt	
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ExtendsProxyWallet(balance: Int) : RealWallet(balance) {
+    override fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        super.deposit(amount)
+    }
+
+    override fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        super.withdrawal(amount)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt
new file mode 100644
index 0000000..d9e0e8c
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt	
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ImplementsProxyWallet(
+    private val realWallet: RealWallet
+) : Wallet {
+    override fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        realWallet.deposit(amount)
+    }
+
+    override fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        realWallet.withdrawal(amount)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt
new file mode 100644
index 0000000..82b88da
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt	
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class Owner(
+    private val wallet: Wallet
+) {
+    fun deposit(amount: Int) {
+        wallet.deposit(amount)
+    }
+
+    fun withdrawal(amount: Int) {
+        wallet.withdrawal(amount)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt
new file mode 100644
index 0000000..2d3f403
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt	
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+open class RealWallet(
+    private var balance: Int = 0
+) : Wallet {
+    override fun deposit(amount: Int) {
+        this.balance += amount
+    }
+
+    override fun withdrawal(amount: Int) {
+        this.balance -= amount
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt
new file mode 100644
index 0000000..22a7a57
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt	
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+interface Wallet {
+    fun deposit(amount: Int)
+
+    fun withdrawal(amount: Int)
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt
new file mode 100644
index 0000000..64e2499
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt	
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ProxyWalletApplication
+
+fun main() {
+    val wallet = ImplementsProxyWallet(RealWallet())
+    val owner = Owner(wallet)
+    owner.deposit(1000)
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt
new file mode 100644
index 0000000..861b7bb
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt	
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class Owner(
+    private val wallet: Wallet
+) {
+    fun deposit(amount: Int) {
+        wallet.deposit(amount)
+    }
+
+    fun withdrawal(amount: Int) {
+        wallet.withdrawal(amount)
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt
new file mode 100644
index 0000000..73e2af3
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt	
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class Wallet(
+    private var balance: Int = 0
+) {
+    fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        this.balance += amount
+    }
+
+    fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        this.balance -= amount
+    }
+}
diff --git a/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.kt b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.kt
new file mode 100644
index 0000000..0033986
--- /dev/null
+++ b/놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.kt	
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class WalletApplication
+
+fun main() {
+    val wallet = Wallet()
+    val owner = Owner(wallet)
+    owner.deposit(1000)
+}