feat(prototype): 프로토타입 패턴 추가

gof/src/main/kotlin/com/gof/pattern/prototype/after/App.kt

@@ -0,0 +1,24 @@
+package com.gof.pattern.prototype.after
+
+class App
+
+fun main() {
+    var repository: GithubRepository = GithubRepository()
+    repository.user = "whiteship"
+    repository.name = "live-study"
+
+    var githubIssue: GithubIssue = GithubIssue(repository)
+    githubIssue.id = 1
+    githubIssue.title = "1주차 과제: JVM은 무엇이며 자바 코드는 어떻게 실행하는 것인가"
+
+    val url = githubIssue.getUrl()
+    println(url)
+
+    val clone = githubIssue.clone()
+    println(clone.getUrl())
+
+    println(clone != githubIssue)
+    println(clone == githubIssue)
+    println(clone.javaClass === githubIssue.javaClass)
+    println(clone.repository === githubIssue.repository)
+}

gof/src/main/kotlin/com/gof/pattern/prototype/after/GithubIssue.kt

@@ -0,0 +1,24 @@
+package com.gof.pattern.prototype.after
+
+class GithubIssue : Cloneable {
+    var id: Int = 0
+    var title: String = ""
+    var repository: GithubRepository = GithubRepository()
+
+    constructor(repository: GithubRepository) {
+        this.repository = repository
+    }
+
+    fun getUrl(): String {
+        return String.format(
+            "https://github.com/%s/%s/issues/%d",
+            repository.user,
+            repository.name,
+            this.id
+        )
+    }
+
+    public override fun clone(): GithubIssue {
+        return super.clone() as GithubIssue
+    }
+}

gof/src/main/kotlin/com/gof/pattern/prototype/after/GithubRepository.kt

@@ -0,0 +1,6 @@
+package com.gof.pattern.prototype.after
+
+class GithubRepository {
+    var user: String = ""
+    var name: String = ""
+}

gof/src/main/kotlin/com/gof/pattern/prototype/before/App.kt

@@ -0,0 +1,16 @@
+package com.gof.pattern.prototype.before
+
+class App
+
+fun main() {
+    var repository: GithubRepository = GithubRepository()
+    repository.user = "whiteship"
+    repository.name = "live-study"
+
+    var githubIssue: GithubIssue = GithubIssue()
+    githubIssue.id = 1
+    githubIssue.title = "1주차 과제: JVM은 무엇이며 자바 코드는 어떻게 실행하는 것인가"
+
+    val url = githubIssue.getUrl()
+    println(url)
+}

gof/src/main/kotlin/com/gof/pattern/prototype/before/GithubIssue.kt

@@ -0,0 +1,16 @@
+package com.gof.pattern.prototype.before
+
+class GithubIssue {
+    var id: Int = 0
+    var title: String = ""
+    private var repository: GithubRepository = GithubRepository()
+
+    fun getUrl(): String {
+        return String.format(
+            "https://github.com/%s/%s/issues/%d",
+            repository.user,
+            repository.name,
+            this.id
+        )
+    }
+}

gof/src/main/kotlin/com/gof/pattern/prototype/before/GithubRepository.kt

@@ -0,0 +1,6 @@
+package com.gof.pattern.prototype.before
+
+class GithubRepository {
+    var user: String = ""
+    var name: String = ""
+}

ria/java/gof/build.gradle

@@ -15,6 +15,7 @@ repositories {
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.projectlombok:lombok'
+    implementation group: 'org.modelmapper', name: 'modelmapper', version: '2.3.8'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 

ria/java/gof/src/main/java/com/gof/pattern/prototype/after/App.java

@@ -0,0 +1,25 @@
+package com.gof.pattern.prototype.after;
+
+public class App {
+
+    public static void main(String[] args) throws CloneNotSupportedException {
+        GithubRepository repository = new GithubRepository();
+        repository.setUser("whiteship");
+        repository.setName("live-study");
+
+        GithubIssue githubIssue = new GithubIssue(repository);
+        githubIssue.setId(1);
+        githubIssue.setTitle("1주차 과졔: JVM은 무엇이며 자바 코드는 어떻게 실행하는 것인가");
+
+        String url = githubIssue.getUrl();
+        System.out.println("url = " + url);
+
+        GithubIssue clone = (GithubIssue) githubIssue.clone();
+        System.out.println("clone.getUrl() = " + clone.getUrl());
+
+        System.out.println(clone != githubIssue);
+        System.out.println(clone.equals(githubIssue));
+        System.out.println(clone.getClass() == githubIssue.getClass());
+        System.out.println(clone.getRepository() == githubIssue.getRepository());
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/after/GithubIssue.java

@@ -0,0 +1,65 @@
+package com.gof.pattern.prototype.after;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.Objects;
+
+@Getter
+@Setter
+public class GithubIssue implements Cloneable {
+
+    private int id;
+
+    private String title;
+
+    private GithubRepository repository;
+
+    public GithubIssue(GithubRepository repository) {
+        this.repository = repository;
+    }
+
+    public String getUrl() {
+        return String.format("https://github.com/%s/%s/issues/%d",
+                repository.getUser(),
+                repository.getName(),
+                this.getId());
+    }
+
+    /* Object 가 제공해주는 메서드 - 얕은 복사
+     * 얕은 복사의 경우, 값이 수정됨
+     */
+//    @Override
+//    protected Object clone() throws CloneNotSupportedException {
+//        return super.clone();
+//    }
+
+    /*
+    깊은 복사
+     */
+    @Override
+    protected Object clone() throws CloneNotSupportedException {
+        GithubRepository repository = new GithubRepository();
+        repository.setUser(this.repository.getUser());
+        repository.setName(this.repository.getName());
+
+        GithubIssue githubIssue = new GithubIssue(repository);
+        githubIssue.setId(this.id);
+        githubIssue.setTitle(this.title);
+
+        return githubIssue;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        GithubIssue that = (GithubIssue) o;
+        return id == that.id && Objects.equals(title, that.title) && Objects.equals(repository, that.repository);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, title, repository);
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/after/GithubRepository.java

@@ -0,0 +1,12 @@
+package com.gof.pattern.prototype.after;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class GithubRepository {
+
+    private String user;
+    private String name;
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/before/App.java

@@ -0,0 +1,18 @@
+package com.gof.pattern.prototype.before;
+
+public class App {
+
+    public static void main(String[] args) {
+        GithubRepository repository = new GithubRepository();
+        repository.setUser("whiteship");
+        repository.setName("live-study");
+
+
+        GithubIssue githubIssue = new GithubIssue();
+        githubIssue.setId(1);
+        githubIssue.setTitle("1주차 과졔: JVM은 무엇이며 자바 코드는 어떻게 실행하는 것인가");
+
+        String url = githubIssue.getUrl();
+        System.out.println("url = " + url);
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/before/GithubIssue.java

@@ -0,0 +1,22 @@
+package com.gof.pattern.prototype.before;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class GithubIssue {
+
+    private int id;
+
+    private String title;
+
+    private GithubRepository repository;
+
+    public String getUrl() {
+        return String.format("https://github.com/%s/%s/issues/%d",
+                repository.getUser(),
+                repository.getName(),
+                this.getId());
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/before/GithubRepository.java

@@ -0,0 +1,12 @@
+package com.gof.pattern.prototype.before;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class GithubRepository {
+
+    private String user;
+    private String name;
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/java/GithubIssueData.java

@@ -0,0 +1,14 @@
+package com.gof.pattern.prototype.java;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class GithubIssueData {
+
+    private int id;
+    private String title;
+    private String repositoryUser;
+    private String repositoryName;
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/java/JavaCollectionExample.java

@@ -0,0 +1,18 @@
+package com.gof.pattern.prototype.java;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class JavaCollectionExample {
+
+    public static void main(String[] args) {
+        Student keesun = new Student("keesun");
+        Student whiteship = new Student("whiteship");
+        List<Student> students = new ArrayList<>(); // List는 Cloneable을 상속받지 않음
+        students.add(keesun);
+        students.add(whiteship);
+
+        List<Student> clone = new ArrayList<>(students);
+        System.out.println(clone);
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/java/ModelMapperExample.java

@@ -0,0 +1,23 @@
+package com.gof.pattern.prototype.java;
+
+import com.gof.pattern.prototype.after.GithubIssue;
+import com.gof.pattern.prototype.after.GithubRepository;
+import org.modelmapper.ModelMapper;
+
+public class ModelMapperExample {
+
+    public static void main(String[] args) {
+        GithubRepository repository = new GithubRepository();
+        repository.setUser("whiteship");
+        repository.setName("live-study");
+
+        GithubIssue githubIssue = new GithubIssue(repository);
+        githubIssue.setId(1);
+        githubIssue.setTitle("1주차 과졔: JVM은 무엇이며 자바 코드는 어떻게 실행하는 것인가");
+
+        // 리플렉션 사용
+        ModelMapper modelMapper = new ModelMapper();
+        GithubIssueData githubIssueData = modelMapper.map(githubIssue, GithubIssueData.class);
+        System.out.println(githubIssueData);
+    }
+}

ria/java/gof/src/main/java/com/gof/pattern/prototype/java/Student.java

@@ -0,0 +1,17 @@
+package com.gof.pattern.prototype.java;
+
+public class Student {
+
+    String name;
+
+    public Student(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "Student{" +
+                "name='" + name + '\'' +
+                "}";
+    }
+}