https://docs.jboss.org/hibernate/orm/5.3/quickstart/html_single/

https://docs.jboss.org/hibernate/orm/5.3/quickstart/html_single/hibernate-tutorials.zip

https://gitee.com/dyyx/hellocode/tree/master/demo/hibernate-tutorials




basic  
Hibernate tutorial illustrating the use of native APIs and hbm.xml for mapping metadata

annotations
Hibernate tutorial illustrating the use of native APIs and annotations for mapping metadata

entitymanager
Hibernate tutorial illustrating the use of JPA APIs and annotations for mapping metadata

envers
Hibernate tutorial illustrating basic set up and use of Envers


native APIs

StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
				.configure() // configures settings from hibernate.cfg.xml
				.build();
SessionFactory sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
		
Session session = sessionFactory.openSession();
session.beginTransaction();
session.save( new Event( "Our very first event!", new Date() ) );
session.save( new Event( "A follow up event", new Date() ) );
session.getTransaction().commit();
session.close();




JPA APIs

EntityManagerFactory entityManagerFactory;
// like discussed with regards to SessionFactory, an EntityManagerFactory is set up once for an application
// 		IMPORTANT: notice how the name here matches the name we gave the persistence-unit in persistence.xml!
entityManagerFactory = Persistence.createEntityManagerFactory( "org.hibernate.tutorial.jpa" );
	
EntityManager entityManager = entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
entityManager.persist( new Event( "Our very first event!", new Date() ) );
entityManager.persist( new Event( "A follow up event", new Date() ) );
entityManager.getTransaction().commit();
entityManager.close();




package org.hibernate.tutorial.annotations;

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

import org.hibernate.annotations.GenericGenerator;

@Entity
@Table( name = "EVENTS" )
public class Event {
    private Long id;

    private String title;
    private Date date;

	public Event() {
		// this form used by Hibernate
	}

	public Event(String title, Date date) {
		// for application use, to create new events
		this.title = title;
		this.date = date;
	}

	@Id
	@GeneratedValue(generator="increment")
	@GenericGenerator(name="increment", strategy = "increment")
    public Long getId() {
		return id;
    }

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

	@Temporal(TemporalType.TIMESTAMP)
	@Column(name = "EVENT_DATE")
    public Date getDate() {
		return date;
    }

    public void setDate(Date date) {
		this.date = date;
    }

    public String getTitle() {
		return title;
    }

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



Event.hbm.xml


<hibernate-mapping package="org.hibernate.tutorial.hbm">

    <class name="Event" table="EVENTS">
        <id name="id" column="EVENT_ID">
            <generator class="increment"/>
        </id>
        <property name="date" type="timestamp" column="EVENT_DATE"/>
        <property name="title"/>
    </class>

</hibernate-mapping>



hibernate.cfg.xml


<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">org.h2.Driver</property>
        <property name="connection.url">jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=TRUE</property>
        <property name="connection.username">sa</property>
        <property name="connection.password"/>

        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.H2Dialect</property>

        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>

        <!-- Drop and re-create the database schema on startup -->
        <property name="hbm2ddl.auto">create</property>

        <mapping resource="org/hibernate/tutorial/hbm/Event.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

hbm 与 注解 方式的区别

<mapping resource="org/hibernate/tutorial/hbm/Event.hbm.xml"/>

<mapping class="org.hibernate.tutorial.annotations.Event"/>




hibernate.cfg.xml 配置要点

SQL dialect  SQL方言
dialect  org.hibernate.dialect.H2Dialect

Disable the second-level cache   禁用二级缓存 
cache.provider_class    org.hibernate.cache.internal.NoCacheProvider 

show_sql true

hbm2ddl.auto  create
Drop and re-create the database schema on startup