Hibernate: CRUD

Dans cet exemple, on va montrer comment faire les opérations CRUD(ajouter,modifier,supprimer et affichage) avec hibernate en utlisant hibernate tools pour le reverse engineering.

Tutorial hibernate:



Voici le cdoe de la  classe de l'entité Client.

	package entities;
	// Generated 19 févr. 2015 17:55:19 by Hibernate Tools 3.4.0.CR1
	/**
	* Client generated by hbm2java
	*/
	public class Client implements java.io.Serializable {
	@Override
	public String toString() {
	return "Client [idclient=" + idclient + ", nom=" + nom + ", prenom="
	+ prenom + "]";
	}
	private int idclient;
	private String nom;
	private String prenom;
	public Client() {
	}
	public Client(int idclient) {
	this.idclient = idclient;
	}
	public Client(int idclient, String nom, String prenom) {
	this.idclient = idclient;
	this.nom = nom;
	this.prenom = prenom;
	}
	public int getIdclient() {
	return this.idclient;
	}
	public void setIdclient(int idclient) {
	this.idclient = idclient;
	}
	public String getNom() {
	return this.nom;
	}
	public void setNom(String nom) {
	this.nom = nom;
	}
	public String getPrenom() {
	return this.prenom;
	}
	public void setPrenom(String prenom) {
	this.prenom = prenom;
	}
	}

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Ceci est le fichier de mapping Client.hbm.xml

	<?xml version="1.0"?>
	<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
	<!-- Generated 19 f?vr. 2015 17:55:19 by Hibernate Tools 3.4.0.CR1 -->
	<hibernate-mapping>
	<class name="entities.Client" table="client" catalog="mabase">
	<id name="idclient" type="int">
	<column name="idclient" />
	<generator class="assigned" />
	</id>
	<property name="nom" type="string">
	<column name="nom" />
	</property>
	<property name="prenom" type="string">
	<column name="prenom" />
	</property>
	</class>
	</hibernate-mapping>

view raw Client.hbm.xml hosted with ❤ by GitHub

Le code de fichier de configuration hibernate-cfg.xml

	<?xml version="1.0" encoding="utf-8"?>
	<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
	<hibernate-configuration>
	<session-factory>
	<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
	<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
	<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mabase</property>
	<property name="hibernate.connection.username">root</property>
	<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
	<property name="hibernate.search.autoregister_listeners">false</property>
	<mapping resource="entities/Client.hbm.xml" />
	</session-factory>
	</hibernate-configuration>

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La classe HibernateUtil.java

	package dao;
	import org.hibernate.*;
	import org.hibernate.cfg.*;
	/**
	* Startup Hibernate and provide access to the singleton SessionFactory
	*/
	public class HibernateUtil {
	private static SessionFactory sessionFactory;
	static {
	try {
	sessionFactory = new Configuration().configure().buildSessionFactory();
	} catch (Throwable ex) {
	throw new ExceptionInInitializerError(ex);
	}
	}
	public static SessionFactory getSessionFactory() {
	// Alternatively, we could look up in JNDI here
	return sessionFactory;
	}
	public static void shutdown() {
	// Close caches and connection pools
	getSessionFactory().close();
	}
	}

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L'interface IClientDao,contenant les methodes qu'on veut implémenter.

	package dao;
	import java.util.List;
	import entities.Client;
	public interface IClientDao {
	public void ajouterClient(Client client);
	public List<Client> tousClients();
	public Client GetClientById(int id);
	public void supprimerClient(int id);
	public void modifierClient(int id);
	public List<Client> rechercheByCriteria(String nom);
	}

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Et voici la classe ClientDaoImpl.java qui implemente l'interface IClientDao

	package dao;
	import java.util.List;
	import org.hibernate.Criteria;
	import org.hibernate.Session;
	import org.hibernate.Transaction;
	import org.hibernate.criterion.Criterion;
	import org.hibernate.criterion.Restrictions;
	import entities.Client;
	public class ClientDaoImpl implements IClientDao {
	@Override
	public void ajouterClient(Client client) {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	Transaction tx=session.beginTransaction();
	session.save(client);
	tx.commit();
	session.close();
	}
	@Override
	public List<Client> tousClients() {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	List<Client> listclient=session.createQuery("from Client").list();
	session.close();
	return listclient;
	}
	@Override
	public Client GetClientById(int id) {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	Client client=(Client) session.get(Client.class, id);
	session.close();
	return client;
	}
	@Override
	public void supprimerClient(int id) {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	Transaction tx=session.beginTransaction();
	Client client=(Client) session.get(Client.class, id);
	session.delete(client);
	tx.commit();
	session.close();
	}
	@Override
	public void modifierClient(int id) {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	Transaction tx=session.beginTransaction();
	Client client=(Client) session.get(Client.class, id);
	client.setNom("newname");
	session.update(client);
	tx.commit();
	session.close();
	}
	@Override
	public List<Client> rechercheByCriteria(String nom) {
	// TODO Auto-generated method stub
	Session session=HibernateUtil.getSessionFactory().openSession();
	Criteria criteria=session.createCriteria(Client.class);
	Criterion criterion=Restrictions.eq("nom", nom);
	criteria.add(criterion);
	List<Client> listclient=criteria.list();
	session.close();
	return listclient;
	}
	}

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code source complet GitHub