인프런 커뮤니티 질문&답변

안녕하세요.

제가 멀 잘못 했길래 아래 결과가 모두 false 가 나오는거죠? (2.Result : true 가 나와야 한다고 생각 합니다.)

(Tester를 만들어  돌리는게 익숙치 않아 직접 돌렸습니다.)

소스는 test05() 수행 해서  Post table에 저장하고, 영속성컨텍스트에 관리 되는 Entity 가 어떤건지 확인 하는 코드 입니다.

package com.example.JPA03;
import com.example.JPA03.domain.Post;
import com.example.JPA03.repository.PostRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.Transactional;
import java.util.Date;
import java.util.List;
import java.util.Optional;

@Component
public class JPA03Runner implements ApplicationRunner {

    @Autowired
    PostRepository postRepository;

    @PersistenceContext
    private EntityManager entityManager;


    @Override
    public void run(ApplicationArguments args) throws Exception {

       test05();
    }

    @Transactional
    private void test05(){

       Post post = new Post();
       post.setTitle("ys..");
       Post savedPost = postRepository.save(post); // persist

       System.out.println("1. result : " +  entityManager.contains(post) );
       System.out.println("2. result : " +  entityManager.contains(savedPost) );

     }
}

package com.example.JPA03.domain;

import com.example.JPA03.event.PostPublishedEvent;
import org.springframework.data.domain.AbstractAggregateRoot;

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

@Entity//@NamedQuery(name="Post.testNamedQuery", query = "select * from Post as p where p.title = ?1")
public class Post extends AbstractAggregateRoot<Post> {

    @Id @GeneratedValue
    private Long id;
    private String title;
    private Integer likeCount;

    @Temporal(TemporalType.TIMESTAMP)
    private Date creatDate;

    public Post publishPostEvent(){
        this.registerEvent(new PostPublishedEvent(this));
        return this;
    }

    public Integer getLikeCount() {
        return likeCount;
    }

    public void setLikeCount(Integer likeCount) {
        this.likeCount = likeCount;
    }

    public Date getCreatDate() {
        return creatDate;
    }

    public void setCreatDate(Date creatDate) {
        this.creatDate = creatDate;
    }

    public Long getId() {
        return id;
    }

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

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
}

package com.example.JPA03;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Jpa03Application {

   public static void main(String[] args) {
      SpringApplication.run(Jpa03Application.class, args);
   }

}

==수행 결과 ==

  .   ____          _            __ _ _

 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \

( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \

 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )

  '  |____| .__|_| |_|_| |_\__, | / / / /

 =========|_|==============|___/=/_/_/_/

 :: Spring Boot ::        (v2.3.3.RELEASE)

2020-08-26 01:05:37.745  INFO 4260 --- [           main] com.example.JPA03.Jpa03Application       : Starting Jpa03Application on DESKTOP-GOQMQQP with PID 4260 (D:\private\study\jpa_study\JPA03\target\classes started by BISTel in D:\private\study\jpa_study)

2020-08-26 01:05:37.748  INFO 4260 --- [           main] com.example.JPA03.Jpa03Application       : No active profile set, falling back to default profiles: default

2020-08-26 01:05:38.147  INFO 4260 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.

2020-08-26 01:05:38.208  INFO 4260 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 52ms. Found 1 JPA repository interfaces.

2020-08-26 01:05:38.563  INFO 4260 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'

2020-08-26 01:05:38.597  INFO 4260 --- [         task-1] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]

2020-08-26 01:05:38.639  INFO 4260 --- [         task-1] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.20.Final

2020-08-26 01:05:38.662  INFO 4260 --- [           main] DeferredRepositoryInitializationListener : Triggering deferred initialization of Spring Data repositories…

2020-08-26 01:05:38.749  INFO 4260 --- [         task-1] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}

2020-08-26 01:05:39.206  INFO 4260 --- [         task-1] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...

2020-08-26 01:05:39.296  INFO 4260 --- [         task-1] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.

2020-08-26 01:05:39.324  INFO 4260 --- [         task-1] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL10Dialect

2020-08-26 01:05:39.857  INFO 4260 --- [         task-1] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]

2020-08-26 01:05:39.862  INFO 4260 --- [         task-1] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'

2020-08-26 01:05:40.110  INFO 4260 --- [           main] DeferredRepositoryInitializationListener : Spring Data repositories initialized!

2020-08-26 01:05:40.115  INFO 4260 --- [           main] com.example.JPA03.Jpa03Application       : Started Jpa03Application in 2.661 seconds (JVM running for 3.051)

Hibernate: 

    select

        nextval ('hibernate_sequence')

Hibernate: 

    insert 

    into

        post

        (creat_date, like_count, title, id) 

    values

        (?, ?, ?, ?)

2020-08-26 01:05:41.837 TRACE 4260 --- [           main] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [TIMESTAMP] - [null]

2020-08-26 01:05:41.837 TRACE 4260 --- [           main] o.h.type.descriptor.sql.BasicBinder      : binding parameter [2] as [INTEGER] - [null]

2020-08-26 01:05:41.838 TRACE 4260 --- [           main] o.h.type.descriptor.sql.BasicBinder      : binding parameter [3] as [VARCHAR] - [ys..]

2020-08-26 01:05:41.838 TRACE 4260 --- [           main] o.h.type.descriptor.sql.BasicBinder      : binding parameter [4] as [BIGINT] - [66]

1. result : false

2. result : false

ㅇㅇ