#30 jpa basic: entity mapping

hello-jpa/src/main/java/com/hello/jpa/context/JpaMain.java

@@ -1,4 +1,4 @@
-package com.hello.jpa;
+package com.hello.jpa.context;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;

hello-jpa/src/main/java/com/hello/jpa/context/JpaSelect.java

@@ -1,4 +1,4 @@
-package com.hello.jpa;
+package com.hello.jpa.context;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;

hello-jpa/src/main/java/com/hello/jpa/context/JpaUpdate.java

@@ -1,4 +1,4 @@
-package com.hello.jpa;
+package com.hello.jpa.context;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;

hello-jpa/src/main/java/com/hello/jpa/context/Member.java

@@ -1,9 +1,8 @@
-package com.hello.jpa;
+package com.hello.jpa.context;
 
-import javax.persistence.Entity;
 import javax.persistence.Id;
 
-@Entity
+//@Entity
 public class Member {
 
     @Id

hello-jpa/src/main/java/com/hello/jpa/context/PersistenceContext.java

@@ -1,4 +1,4 @@
-package com.hello.jpa;
+package com.hello.jpa.context;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;

hello-jpa/src/main/java/com/hello/jpa/entitymapping/ex00/JpaMain.java

@@ -0,0 +1,36 @@
+package com.hello.jpa.entitymapping.ex00;
+
+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 {
+            Member member = new Member("name");
+            Member member2 = new Member("name2");
+            em.persist(member);
+            em.persist(member2);
+            tx.commit();
+
+            em.createQuery("select m from Member m").getResultList()
+                    .forEach(System.out::println);
+
+        } catch (Exception e) {
+            tx.rollback();
+        } finally {
+            em.close();
+        }
+
+        emf.close();
+    }
+}

hello-jpa/src/main/java/com/hello/jpa/entitymapping/ex00/Member.java

@@ -0,0 +1,54 @@
+package com.hello.jpa.entitymapping.ex00;
+
+import javax.persistence.*;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.Date;
+
+@Entity
+@Table(name = "Member2")
+public class Member {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Column(name = "name", nullable = false, length = 10)
+    private String username;
+
+    private Integer age;
+
+    @Enumerated(EnumType.STRING)
+    private RoleType roleType;
+
+    @Column(updatable = false)
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date createdDate;
+
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date lastModifiedDate;
+
+    private LocalDate localDate;
+    private LocalDateTime localDateTime;
+
+    @Lob
+    private String description;
+
+    @Transient
+    private int temp;
+
+    public Member() {
+    }
+
+    public Member(String username) {
+        this.username = username;
+    }
+
+    @Override
+    public String toString() {
+        return "Member{" +
+                "id=" + id +
+                ", username='" + username + '\'' +
+                '}';
+    }
+}

hello-jpa/src/main/java/com/hello/jpa/entitymapping/ex00/RoleType.java

@@ -0,0 +1,6 @@
+package com.hello.jpa.entitymapping.ex00;
+
+public enum RoleType {
+
+    USER, ADMIN
+}

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

@@ -3,20 +3,21 @@
              xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
     <persistence-unit name="hello">
-        <class>com.hello.jpa.Member</class>
+        <class>com.hello.jpa.context.Member</class>
+        <class>com.hello.jpa.entitymapping.ex00.Member</class>
         <properties>
             <!-- 필수 속성 -->
             <property name="javax.persistence.jdbc.driver" value="org.h2.Driver"/>
             <property name="javax.persistence.jdbc.user" value="sa"/>
             <property name="javax.persistence.jdbc.password" value=""/>
-            <property name="javax.persistence.jdbc.url" value="jdbc:h2:tcp://localhost/~/test"/>
+            <property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:~/testdb"/>
             <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"/>
 
             <!-- 옵션 -->
             <property name="hibernate.show_sql" value="true"/>
             <property name="hibernate.format_sql" value="true"/>
             <property name="hibernate.use_sql_comments" value="true"/>
-            <!--<property name="hibernate.hbm2ddl.auto" value="create" />-->
+            <property name="hibernate.hbm2ddl.auto" value="create" />
         </properties>
     </persistence-unit>
 </persistence>