feat : Design Pattern - 파사드(Facade) 패턴 구현

놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md

@@ -126,6 +126,13 @@
 
 ### 파사드(Facade) 패턴
 
+#### 구현 요구사항
+
+- 회원의 모든 정보를 조회한다.
+- 회원의 모든 정보에는 회원의 기본 정보와 친구들에 대한 정보가 있다.
+  - 회원의 기본 정보에는 이름, 나이가 있다.
+  - 회원의 친구 정보에는 친구의 이름, 나이가 있다.
+
 ### 추상 팩토리(Abstract Factory) 패턴
 
 ### 컴포지트(Composite) 패턴

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/InformationFinder.kt

@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Information
+
+interface InformationFinder {
+    fun findInformation(): Information
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberApplication.kt

@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+
+class MemberApplication
+
+fun main() {
+    val memberFinder = MemberFinder()
+    val friendFinder = FriendFinder()
+
+    val memberInformationFinder = MemberInformationFinder(memberFinder, friendFinder)
+
+    val memberInformation = memberInformationFinder.findInformation()
+    println(memberInformation)
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberInformationFinder.kt

@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Information
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberInformation
+
+class MemberInformationFinder(
+    private val memberFinder: MemberFinder,
+    private val friendFinder: FriendFinder,
+): InformationFinder {
+    override fun findInformation(): Information {
+        val member = memberFinder.findMember()
+        val friends = friendFinder.findFriends(member)
+        return MemberInformation(member, friends)
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/before/MemberApplication.kt

@@ -0,0 +1,18 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberInformation
+
+class MemberApplication
+
+fun main() {
+    val memberFinder = MemberFinder()
+    val friendFinder = FriendFinder()
+
+    val member = memberFinder.findMember()
+    val friends = friendFinder.findFriends(member)
+
+    val memberInformation = MemberInformation(member, friends)
+    println(memberInformation)
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Friend.kt

@@ -0,0 +1,6 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class Friend(
+    val name: String,
+    val age: Int
+)

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendFinder.kt

@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Friend
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Member
+
+class FriendFinder {
+    fun findFriends(member: Member): List<Friend> {
+        return listOf(Friend("colt", 29))
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendInformation.kt

@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class FriendInformation(
+    val name: String,
+    val age: Int
+) : Information {
+    constructor(friend: Friend) : this(
+        name = friend.name,
+        age = friend.age
+    )
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Information.kt

@@ -0,0 +1,3 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+interface Information

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Member.kt

@@ -0,0 +1,6 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+class Member(
+    val name: String,
+    val age: Int
+)

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberFinder.kt

@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Member
+
+class MemberFinder {
+    fun findMember(): Member {
+        return Member("banjjoknim", 29)
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberInformation.kt

@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class MemberInformation(
+    val memberName: String,
+    val memberAge: Int,
+    val friendsInformation: List<FriendInformation>
+): Information {
+    constructor(member: Member, friends: List<Friend>) : this(
+        memberName = member.name,
+        memberAge = member.age,
+        friendsInformation = friends.map { FriendInformation(it) }
+    )
+}