package domain;

import java.util.LinkedList;
import java.util.List;
import domain.Termin;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.Table;


@Entity
@Table(name = "PERSON")
public class Person {
   private long id;
   private String vorname;
   private String nachname;
   private List<Termin> termine=new LinkedList<Termin>();
   
   public Person() {
   }
   @Id @GeneratedValue(strategy=GenerationType.AUTO)
   public long getId() {
      return id;
   }
   public void setId(long id) {
      this.id = id;
   }
   public String getNachname() {
      return nachname;
   }
   public void setNachname(String nachname) {
      this.nachname = nachname;
   }
   public String getVorname() {
      return vorname;
   }
   public void setVorname(String vorname) {
      this.vorname = vorname;
   }
   
   public void addTermin(Termin termin){
      termine.add(termin);
   }
   @ManyToMany(mappedBy="person")
   public List<Termin> getTermine() {
      return termine;
   }
   public void setTermine(List<Termin> termine) {
      this.termine = termine;
   }
   
}

package domain;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.Table;


@Entity
@Table(name = "TERMIN")
public class Termin {
   private long id;
   private String titel;
   private Person eigentuemer;
   private List<Person> teilnehmer= new ArrayList<Person>();
   
   public void addTeilnehmer(Person person){
      teilnehmer.add(person);
   }
   @ManyToMany
   public List<Person> getTeilnehmer() {
      return teilnehmer;
   }
   public void setTeilnehmer(List<Person> teilnehmer) {
      this.teilnehmer = teilnehmer;
   }
   public Termin() {
       
   }
   @Id @GeneratedValue(strategy=GenerationType.AUTO)
   public long getId() {
      return id;
   }
   public void setId(long id) {
      this.id = id;
   }
   public String getTitel() {
      return titel;
   }
   public void setTitel(String titel) {
      this.titel = titel;
   }
   public Person getEigentuemer() {
      return eigentuemer;
   }
   public void setEigentuemer(Person eigentuemer) {
      this.eigentuemer = eigentuemer;
   }
   
}

package test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;

import services.HibernateUtil;
import domain.Person;
import domain.Termin;

public class Test {
   
   
   
   public static void main(String[] args) {
      Session session = null;
      HibernateUtil.setRecreateDB(true);
      session = HibernateUtil.getSessionFactory().getCurrentSession();
       
       
      /*      Person person1 =new Person();
      person1.setNachname("P1");
       
      Transaction transaction = session.beginTransaction();
      session.save(person1);
      transaction.commit();
       
       
      Person person2 =new Person();
      person2.setNachname("P2");
      session = HibernateUtil.getSessionFactory().getCurrentSession();
      transaction = session.beginTransaction();
      session.save(person2);
      transaction.commit();

       
       
      Termin termin1 =new Termin();
      termin1.setTitel("T1");
      termin1.setEigentuemer(person1);
      termin1.addTeilnehmer(person1);
      termin1.addTeilnehmer(person2);
      session = HibernateUtil.getSessionFactory().getCurrentSession();
      transaction = session.beginTransaction();
      session.save(termin1);
      transaction.commit();

       
   Termin termin2 =new Termin();
      termin2.setTitel("t2");
      termin2.setEigentuemer(person1);
      termin2.addTeilnehmer(person1);
      termin2.addTeilnehmer(person2);
       
      transaction = session.beginTransaction();
      session.save(termin2);
      transaction.commit();
      session.close();
      */
       
       

   }
}

package services;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;


import domain.Person;
import domain.Termin;

public class HibernateUtil {

   private static boolean recreateDB = false;
   
   public static void setRecreateDB(boolean recreateDB) {
      HibernateUtil.recreateDB = recreateDB;
   }
   
   public static SessionFactory getSessionFactory() {
      if (sessionFactory == null) {
         sessionFactory = sessionFactory("hibernate.cfg.xml");
      }
      return sessionFactory;
   }
   
   private static SessionFactory sessionFactory = null;
   
   private static SessionFactory sessionFactory(String configurationFileName) {
      try {
         AnnotationConfiguration annotationConfiguration =
            new AnnotationConfiguration()
            .addAnnotatedClass(Person.class)
            .addAnnotatedClass(Termin.class);
         
         if (recreateDB) annotationConfiguration.setProperty("hibernate.hbm2ddl.auto", "create");
         annotationConfiguration.configure();
         return annotationConfiguration.buildSessionFactory();
      } catch (Throwable ex){
         System.err.println("Initial SessionFactory creation failed." + ex);
         throw new ExceptionInInitializerError(ex);
      }
   }
   
}

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
    PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory >
      <property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="hibernate.connection.password">application</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/test</property>
        <property name="hibernate.connection.username">application</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
       <property name="current_session_context_class">thread</property>
      <property name="hibernate.show_sql">true</property>
    </session-factory>
</hibernate-configuration>