#30 jpa basic: relation mapping - one to one

hello-jpa/src/main/java/com/hello/jpa/relationmapping/ex02/JpaMain.java

@@ -0,0 +1,28 @@
+package com.hello.jpa.relationmapping.ex02;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.EntityTransaction;
+import javax.persistence.Persistence;
+
+public class JpaMain {
+
+    public static void main(String[] args) {
+        EntityManagerFactory emf = Persistence.createEntityManagerFactory("hello");
+
+        EntityManager em = emf.createEntityManager();
+
+        EntityTransaction tx = em.getTransaction();
+        tx.begin();
+
+        try {
+            tx.commit();
+        } catch (Exception e) {
+            tx.rollback();
+        } finally {
+            em.close();
+        }
+
+        emf.close();
+    }
+}

hello-jpa/src/main/java/com/hello/jpa/relationmapping/ex02/domain/Locker.java

@@ -0,0 +1,18 @@
+package com.hello.jpa.relationmapping.ex02.domain;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToOne;
+
+@Entity
+public class Locker {
+
+    @Id @GeneratedValue
+    private Long id;
+
+    private String name;
+
+    @OneToOne(mappedBy = "locker")
+    private Member member;
+}

hello-jpa/src/main/java/com/hello/jpa/relationmapping/ex02/domain/Member.java

@@ -0,0 +1,54 @@
+package com.hello.jpa.relationmapping.ex02.domain;
+
+import javax.persistence.*;
+
+@Entity
+public class Member {
+
+    @Id @GeneratedValue
+    @Column(name = "MEMBER_ID")
+    private Long id;
+
+    @Column(name = "USERNAME")
+    private String name;
+
+    @ManyToOne
+    @JoinColumn(name = "TEAM_ID")
+    private Team team;
+
+    @OneToOne
+    @JoinColumn(name = "LOCKER_ID")
+    private Locker locker;
+
+    public Locker getLocker() {
+        return locker;
+    }
+
+    public void setLocker(Locker locker) {
+        this.locker = locker;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Team getTeam() {
+        return team;
+    }
+
+    public void setTeam(Team team) {
+        this.team = team;
+    }
+}

hello-jpa/src/main/java/com/hello/jpa/relationmapping/ex02/domain/RoleType.java

@@ -0,0 +1,6 @@
+package com.hello.jpa.relationmapping.ex02.domain;
+
+public enum RoleType {
+
+    USER, ADMIN
+}

hello-jpa/src/main/java/com/hello/jpa/relationmapping/ex02/domain/Team.java

@@ -0,0 +1,47 @@
+package com.hello.jpa.relationmapping.ex02.domain;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+public class Team {
+
+    @Id @GeneratedValue
+    @Column(name = "TEAM_ID")
+    private Long id;
+
+    private String name;
+
+    @OneToMany(mappedBy = "team")
+    private List<Member> members = new ArrayList<>();
+
+    public void addMember(Member member) {
+        member.setTeam(this);
+        members.add(member);
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<Member> getMembers() {
+        return members;
+    }
+
+    public void setMembers(List<Member> members) {
+        this.members = members;
+    }
+}

hello-jpa/src/main/resources/META-INF/persistence.xml

@@ -11,10 +11,13 @@
 <!--        <class>com.hello.jpa.entitymapping.ex01.domain.OrderItem</class>-->
 <!--        <class>com.hello.jpa.relationmapping.ex00.Member</class>-->
 <!--        <class>com.hello.jpa.relationmapping.ex00.Team</class>-->
-        <class>com.hello.jpa.relationmapping.ex01.domain.Item</class>
-        <class>com.hello.jpa.relationmapping.ex01.domain.Member</class>
-        <class>com.hello.jpa.relationmapping.ex01.domain.Order</class>
-        <class>com.hello.jpa.relationmapping.ex01.domain.OrderItem</class>
+<!--        <class>com.hello.jpa.relationmapping.ex01.domain.Item</class>-->
+<!--        <class>com.hello.jpa.relationmapping.ex01.domain.Member</class>-->
+<!--        <class>com.hello.jpa.relationmapping.ex01.domain.Order</class>-->
+<!--        <class>com.hello.jpa.relationmapping.ex01.domain.OrderItem</class>-->
+        <class>com.hello.jpa.relationmapping.ex02.domain.Member</class>
+        <class>com.hello.jpa.relationmapping.ex02.domain.Team</class>
+        <class>com.hello.jpa.relationmapping.ex02.domain.Locker</class>
 
         <properties>
             <!-- 필수 속성 -->