엔티티 생성 및 기본 테스트

java

닫기 줄바꿈

package com.example.chat04;

public enum RoleType {
​​​​ADMIN,USER
}

java

닫기 줄바꿈

package com.example.chat04;

import javax.persistence.*;
import java.util.Date;

@Entity
@Table(name="MEMBER", uniqueConstraints = {@UniqueConstraint(name = "NAME_AGE_UNIQUE",columnNames = {"NAME","AGE"})})
public class Member {

​​​​@Id
​​​​@Column(name = "ID")
​​​​private String id;

​​​​@Column(name = "NAME", nullable = false, length = 10)
​​​​private String username;

​​​​private Integer age;

​​​​@Enumerated(EnumType.STRING)
​​​​private RoleType roleType;

​​​​@Temporal(TemporalType.TIMESTAMP)
​​​​private Date createDate;

​​​​@Temporal(TemporalType.TIMESTAMP)
​​​​private Date lastModifiedDate;

​​​​@Lob
​​​​private String description;

​​​​@Transient
​​​​private String temp;


​​​​public String getId() {
​​​​​​​​return id;
​​​​}

​​​​public void setId(String id) {
​​​​​​​​this.id = id;
​​​​}

​​​​public String getUsername() {
​​​​​​​​return username;
​​​​}

​​​​public void setUsername(String username) {
​​​​​​​​this.username = username;
​​​​}

​​​​public Integer getAge() {
​​​​​​​​return age;
​​​​}

​​​​public void setAge(Integer age) {
​​​​​​​​this.age = age;
​​​​}

​​​​public RoleType getRoleType() {
​​​​​​​​return roleType;
​​​​}

​​​​public void setRoleType(RoleType roleType) {
​​​​​​​​this.roleType = roleType;
​​​​}

​​​​public Date getCreateDate() {
​​​​​​​​return createDate;
​​​​}

​​​​public void setCreateDate(Date createDate) {
​​​​​​​​this.createDate = createDate;
​​​​}

​​​​public Date getLastModifiedDate() {
​​​​​​​​return lastModifiedDate;
​​​​}

​​​​public void setLastModifiedDate(Date lastModifiedDate) {
​​​​​​​​this.lastModifiedDate = lastModifiedDate;
​​​​}

​​​​public String getDescription() {
​​​​​​​​return description;
​​​​}

​​​​public void setDescription(String description) {
​​​​​​​​this.description = description;
​​​​}

​​​​public String getTemp() {
​​​​​​​​return temp;
​​​​}

​​​​public void setTemp(String temp) {
​​​​​​​​this.temp = temp;
​​​​}
}

 

java

닫기 줄바꿈

package com.example.chat04;


import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import java.util.List;

public class Chat04Application {

​​​​public static void main(String[] args) {

​​​​​​​​//엔티티 매니저 팩토리 생성
​​​​​​​​EntityManagerFactory emf = Persistence.createEntityManagerFactory("jpabook");
​​​​​​​​EntityManager em = emf.createEntityManager();  //엔티티 매니저 생성

​​​​​​​​EntityTransaction tx = em.getTransaction();  //트랜잭션 기능 획득

​​​​​​​​try {
​​​​​​​​​​​​tx.begin();  //트랜잭션 시작
​​​​​​​​​​​​logic(em);   //비즈니스 로직
​​​​​​​​​​​​tx.commit(); //트랜잭션 커밋
​​​​​​​​} catch (Exception e) {
​​​​​​​​​​​​e.printStackTrace();
​​​​​​​​​​​​tx.rollback();  //트랜잭션 롤백
​​​​​​​​} finally {
​​​​​​​​​​​​em.close();  //엔티티 매니저 종료
​​​​​​​​​​​​emf.close(); //엔티티 매니저 팩토리 종료
​​​​​​​​}
​​​​}

​​​​private static void logic(EntityManager em) {
​​​​​​​​String id = "id1";
​​​​​​​​Member member = new Member();
​​​​​​​​member.setId(id);
​​​​​​​​member.setUsername("지한");
​​​​​​​​member.setAge(2);

​​​​​​​​//등록
​​​​​​​​em.persist(member);

​​​​​​​​//수정
​​​​​​​​member.setAge(20);

​​​​​​​​//한건 조회
​​​​​​​​Member findMember = em.find(Member.class,id);
​​​​​​​​System.out.println("findMember =" + findMember.getUsername() + ",age=" + findMember.getAge());

​​​​​​​​//목록 조회
​​​​​​​​List<Member> members = em.createQuery("select m from Member m",Member.class).getResultList();
​​​​​​​​System.out.println("members.size = " + members.size());

​​​​​​​​//삭제
​​​​​​​​em.remove(member);

​​​​}

}