o set the fetching mode for association we can call the Criteria
‘s setFetchMode()
method. We can use the FetchMode.SELECT
or FetchMode.JOIN
.
package org.kodejava.hibernate;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
import org.hibernate.criterion.Restrictions;
import org.kodejava.hibernate.model.Record;
import java.util.List;
public class FetchModeDemo {
public static Session getSession() throws HibernateException {
String cfg = "hibernate.cfg.xml";
SessionFactory sessionFactory = new Configuration().configure(cfg)
.buildSessionFactory();
return sessionFactory.openSession();
}
@SuppressWarnings("unchecked")
public static void main(String[] args) {
try (Session session = getSession()) {
Criteria criteria = session.createCriteria(Record.class)
.setFetchMode("artist", FetchMode.SELECT)
.setFetchMode("label", FetchMode.SELECT)
.add(Restrictions.like("title", "The Beatles%"));
List<Record> records = criteria.list();
for (Record record : records) {
System.out.println("Recording = "
+ record.getTitle());
System.out.println("Artist = "
+ record.getArtist().getName());
}
}
}
}
Maven Dependencies
<dependencies>
<!-- https://search.maven.org/remotecontent?filepath=org/hibernate/hibernate-core/5.6.9.Final/hibernate-core-5.6.9.Final.jar -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.6.9.Final</version>
</dependency>
<!-- https://search.maven.org/remotecontent?filepath=mysql/mysql-connector-java/8.0.30/mysql-connector-java-8.0.30.jar -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.30</version>
</dependency>
</dependencies>
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