Hibernate ORM 用のMongoDB拡張機能を使い始める

<dependencies>
   <dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongodb-hibernate</artifactId>
      <version>1.0.0-alpha0</version>
   </dependency>
</dependencies>

dependencies {
   implementation("org.mongodb:mongodb-hibernate:1.0.0-alpha0")
}

mongodb+srv://<db_username>:<db_password>@<cluster>/sample_mflix?<options>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.dialect">com.mongodb.hibernate.dialect.MongoDialect</property>
        <property name="hibernate.connection.provider_class">
            com.mongodb.hibernate.jdbc.MongoConnectionProvider
        </property>
        <property name="jakarta.persistence.jdbc.url">
            connection-string
        </property>
        <property name="hibernate.show_sql">true</property>
        <mapping class="org.example.Movie"/>
    </session-factory>
</hibernate-configuration>

package org.example;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public final class HibernateUtil {
  private static final SessionFactory SESSION_FACTORY =
          new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
  private HibernateUtil() {}
  public static SessionFactory getSessionFactory() { return SESSION_FACTORY; }
}

package org.example;
import com.mongodb.hibernate.annotations.ObjectIdGenerator;
import org.bson.types.ObjectId;
import java.util.List;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
@Entity
@Table(name = "movies")
public class Movie {
	@Id
	@ObjectIdGenerator
	private ObjectId id;
	private String title;
	private String plot;
	private int year;
	private List<String> cast;
	public Movie(String title, String plot, int year, List<String> cast) {
 		this.title = title;
		this.plot = plot;
		this.year = year;
		this.cast = cast;
 	}
	public Movie() {
	}
	public ObjectId getId() {
		return id;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getPlot() {
		return plot;
	}
	public void setPlot(String plot) {
		this.plot = plot;
	}
	
	public int getYear() {
		return year;
	}
	public void setYear(int year) {
		this.year = year;
	}
	public List<String> getCast() {
		return cast;
	}
	
	public void setCast(List<String> cast) {
		this.cast = cast;
	}
}

package org.example;
import org.hibernate.Transaction;
import org.hibernate.Session;
import java.util.ArrayList;
import java.util.List;
public class Main {
        public static void main(String[] args) {
            var sf = HibernateUtil.getSessionFactory();
            Session session = sf.openSession();
            Transaction tx = session.beginTransaction();
            // Add CRUD operations here
            tx.commit();
            session.close();
            sf.close();
        }
}

var searchTitle = "Little Women";
var results = session.createQuery("from Movie m where m.title = :t", Movie.class)
      .setParameter("t", searchTitle)
      .getResultList();
for (var m : results) {
   System.out.println("Title: " + m.getTitle() + ", Year: " + m.getYear());
}

var title = "A Real Pain";
var plot = "Mismatched cousins David and Benji tour Poland to honor their grandmother. " +
       "Their adventure becomes complicated as old tensions resurface while exploring their family history.";
var year = 2024;
var cast = List.of("Jesse Eisenberg", "Kieran Culkin", "Will Sharpe");
var myMovie = new Movie(title, plot, year, cast);
session.persist(myMovie);
System.out.println("Movie created with ID: " + myMovie.getId());

var currentCast = new ArrayList<>(myMovie.getCast());
currentCast.add("Jennifer Grey");
myMovie.setCast(currentCast);
System.out.println("Movie updated with new cast: " + myMovie.getCast());

session.remove(myMovie);
System.out.println("Movie deleted with ID: " + myMovie.getId());