[EJB JPA] Impossible d'utiliser la persistence

Bonjour,

J'ai développé des EJB que je deploie sur Glassfish , je souhaite les tester à l'aide d'un client lourd.

J'arrive a récuperer mon EJB Remote depuis le client lourd , cepedante lorsque j'execute une méthode metier de cet EJB , l'appel à la methode entityFacade.findAll echoue lamentablement.

JE m'explique sur la manière que j'ai employé pour développer le projet :
J'ai définit une bdd , puis depuis netbeans j'ai generé les entity beans depuis une nouvelle persistence unit , puis a partir de ces entity j'ai généré les session beans ( facade ) , puis j'ai developper un ejb remote qui encapsule les méthodes métier.

Voici le code d'un entity :

Code:

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/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */ package ecom.entity;   import java.io.Serializable; import java.util.Collection; import javax.persistence.*; import javax.validation.constraints.NotNull; import javax.validation.constraints.Size; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.XmlTransient;   /**  *  * @author Rami  */ @Entity @Table(name = "customers", catalog = "baptiste", schema = "") @XmlRootElement @NamedQueries({ @NamedQuery(name = "Customers.findAll", query = "SELECT c FROM Customers c"), @NamedQuery(name = "Customers.findByIdCustomer", query = "SELECT c FROM Customers c WHERE c.idCustomer = :idCustomer"), @NamedQuery(name = "Customers.findByLastName", query = "SELECT c FROM Customers c WHERE c.lastName = :lastName"), @NamedQuery(name = "Customers.findByFirstName", query = "SELECT c FROM Customers c WHERE c.firstName = :firstName"), @NamedQuery(name = "Customers.findByEmail", query = "SELECT c FROM Customers c WHERE c.email = :email"), @NamedQuery(name = "Customers.findByPassword", query = "SELECT c FROM Customers c WHERE c.password = :password")}) public class Customers implements Serializable { private static final long serialVersionUID = 1L; @Id @Basic(optional = false) @NotNull @Column(name = "idCustomer") private Integer idCustomer; @Size(max = 45) @Column(name = "lastName") private String lastName; @Size(max = 45) @Column(name = "firstName") private String firstName; // @Pattern(regexp="[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?", message="Invalid email")//if the field contains email address consider using this annotation to enforce field validation @Size(max = 255) @Column(name = "email") private String email; @Size(max = 45) @Column(name = "password") private String password; @JoinTable(name = "customer_has_adress", joinColumns = { @JoinColumn(name = "customer_id", referencedColumnName = "idCustomer")}, inverseJoinColumns = { @JoinColumn(name = "adress_id", referencedColumnName = "idAdress")}) @ManyToMany private Collection<Adress> adressCollection; @JoinColumn(name = "account_id", referencedColumnName = "idAccount") @ManyToOne(optional = false) private Account accountId; @OneToMany(cascade = CascadeType.ALL, mappedBy = "customerId") private Collection<Orders> ordersCollection;   public Customers() { }   public Customers(Integer idCustomer) { this.idCustomer = idCustomer; }   public Integer getIdCustomer() { return idCustomer; }   public void setIdCustomer(Integer idCustomer) { this.idCustomer = idCustomer; }   public String getLastName() { return lastName; }   public void setLastName(String lastName) { this.lastName = lastName; }   public String getFirstName() { return firstName; }   public void setFirstName(String firstName) { this.firstName = firstName; }   public String getEmail() { return email; }   public void setEmail(String email) { this.email = email; }   public String getPassword() { return password; }   public void setPassword(String password) { this.password = password; }   @XmlTransient public Collection<Adress> getAdressCollection() { return adressCollection; }   public void setAdressCollection(Collection<Adress> adressCollection) { this.adressCollection = adressCollection; }   public Account getAccountId() { return accountId; }   public void setAccountId(Account accountId) { this.accountId = accountId; }   @XmlTransient public Collection<Orders> getOrdersCollection() { return ordersCollection; }   public void setOrdersCollection(Collection<Orders> ordersCollection) { this.ordersCollection = ordersCollection; }   @Override public int hashCode() { int hash = 0; hash += (idCustomer != null ? idCustomer.hashCode() : 0); return hash; }   @Override public boolean equals(Object object) { // TODO: Warning - this method won't work in the case the id fields are not set if (!(object instanceof Customers)) { return false; } Customers other = (Customers) object; if ((this.idCustomer == null && other.idCustomer != null) || (this.idCustomer != null && !this.idCustomer.equals(other.idCustomer))) { return false; } return true; }   @Override public String toString() { return "ecom.entity.Customers[ idCustomer=" + idCustomer + " ]"; }   }

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Voici le code d'un sesionbean :

Code:

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/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */ package ecom.entityFacade;   import ecom.entity.Customers; import java.util.List; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query;   /**  *  * @author Rami  */ @Stateless public class CustomersFacade extends AbstractFacade<Customers> implements CustomersFacadeLocal { @PersistenceContext(unitName = "EnterpriseApplication2-ejbPU") private EntityManager em;   @Override protected EntityManager getEntityManager() { return em; }   public CustomersFacade() { super(Customers.class); }   public Customers findByEmail(String email) { Query q = em.createNamedQuery("Customers.findByEmail").setParameter("email", email); return (Customers) q.getSingleResult(); }   public Customers findByName(String name) { Query q = em.createNamedQuery("Customers.findByLastName").setParameter("lastName", name); return (Customers) q.getSingleResult(); } public List<Customers> findAll2() { Query q = em.createNamedQuery("Customers.findAll"); return (List<Customers>) q.getResultList(); }   }

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Voici le code de mon remote :

Code:

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package ecom.session;   import ecom.exception.EcomException;   import ecom.entity.Account; import ecom.entity.Adress; import ecom.entity.Categories; import ecom.entity.Country; import ecom.entity.Customers; import ecom.entity.Products; import ecom.entity.ProductStore; import ecom.entity.Stores; import ecom.entityFacade.*; import java.util.ArrayList; import java.util.List; import javax.ejb.Remote; import javax.ejb.Stateful;   @Stateful //@Remote(EcomAdminRemote.class) public class EcomAdminBean extends EcomGenericBean implements EcomAdminRemote {     /********** METHODE POUR LES ACCOUNT      * createAccount      * listAccount      * modifyAccount      * deleteAccount      */ /**      *      * @param iban : iban du compte      * @param accountOwner : correspond au nom  dans le cas d'un client, ou du nom du magazin dans le cas d'un store      * @param balance : balance du compte      */   @Override public void createAccount(String iban, String accountOwner, double balance) throws EcomException { //Creation de l'Account Account account = new Account(); account.setIban(iban); account.setBalance(Double.valueOf(balance));   // Creation du DAO pour creer le compte AccountFacade accountDao = new AccountFacade(); accountDao.create(account);     // mise a jour de l'utilisateur qui possede le nouveau compte CustomersFacade customerDao = new CustomersFacade(); Customers c = customerDao.findByName(accountOwner);   if (null == c) { // il s'agit d'un store throw new EcomException("On ne peut pas encore ajouter de compte pour un store"); } else { // il s'agit d'un customer c.setAccountId(account); customerDao.edit(c); }   }   @Override public void createCategory(String label, String description) throws EcomException { //Creation de l'Account Categories category = new Categories(); category.setLabel(label); category.setDescription(description);       // Creation du DAO pour creer le compte CategoriesFacade categoryDao = new CategoriesFacade(); categoryDao.create(category);     }   @Override public void deleteCategory(int id) { Categories c = null; CategoriesFacade categoryDao = new CategoriesFacade();   c = categoryDao.find(id); categoryDao.remove(c);   }   @Override /**      * List      */ public List<Account> listAccount() { AccountFacade accountDao = new AccountFacade(); List<Account> accountList = accountDao.findAll(); return accountList; }   @Override /**      * List      */ public Account getAccountByIban(String iban) { AccountFacade accountDao = new AccountFacade(); Account account = accountDao.findByIban(iban);   return account; }   @Override /**      * List      */ public Account getAccountById(int id) { AccountFacade accountDao = new AccountFacade(); Account account = accountDao.find(id); return account; }   @Override /**      * Permet de modifier la balance d'un compte a partir de son iban      */ public void modifyAccount(int id, String iban, double balance) { AccountFacade accountDao = new AccountFacade(); Account account = accountDao.find(id); account.setIban(iban); account.setBalance(balance); accountDao.edit(account); }   @Override public void deleteAccount(int id) { Account a = null; AccountFacade accountDao = new AccountFacade();   a = accountDao.find(id); accountDao.remove(a);   }   /********** METHODE POUR LES STORES      * createStore      * listStore      * modifyStore      * deleteStore      */ /**      *  Créer un magasin à partir de son nom      * @param name      */ public void createStore(String name) { //Creation de l'Account Account account = new Account(); Integer idAccount =0; account.setIdAccount(idAccount);     //Création du store Stores store = new Stores(); store.setName(name); store.setAccountId(account);       // Creation du DAO pour creer le compte StoresFacade storeDAO = new StoresFacade(); storeDAO.create(store);     }   @Override public void modifyStore(Integer storeId, String newNameStore) { //Recherche du store correspondant à l'id Stores store = new Stores();   //Création des dao StoresFacade storeDAO = new StoresFacade(); store = storeDAO.find(storeId);   //changement store.setName(newNameStore);   //transaction storeDAO.edit(store); }   @Override public void associateProductToStore(int productId, int storeId, int stock, Double price) throws EcomException { Stores store = new Stores(); Products product = new Products(); StoresFacade storeDAO = new StoresFacade(); ProductsFacade productDAO = new ProductsFacade();     store = storeDAO.find(storeId); product = productDAO.find(productId);   if(null == store) { throw new EcomException("le Store avec l'id "+storeId+" n'existe pas"); } else if(null == product) { throw new EcomException("le Product avec l'id "+productId+" n'existe pas"); } else { ProductStore productStore = new ProductStore(storeId, productId); ProductStoreFacade productStoreDAO = new ProductStoreFacade(); productStore.setPrice(price); productStore.setStock(stock); productStoreDAO.create(productStore); }     }   @Override public void associateAccountToStore(Integer storeId, Integer accountID) { //Recherche du store correspondant à l'id Stores store = new Stores(); StoresFacade storeDAO = new StoresFacade(); store = storeDAO.find(storeId);   //recherche du compte Account account = new Account(); AccountFacade accountDAO = new AccountFacade(); account = accountDAO.find(accountID);   //association du compte au store store.setAccountId(account) ;   //transaction storeDAO.edit(store);     }   /**      * Supprime un magasin a partir de son ID      * @param storeId      */ @Override public void deleteStore(Integer storeId) {   //Recherche du store correspondant à l'id Stores store = new Stores();   //Création des dao StoresFacade storeDAO = new StoresFacade(); store = storeDAO.find(storeId);   //suprresion du store storeDAO.remove(store); }   public void createProduct(String productName, String description, int categoryId) throws EcomException { Products product = new Products(); ProductsFacade productDAO = new ProductsFacade(); CategoriesFacade categoryDAO = new CategoriesFacade(); product.setName(productName); product.setDescription(description);   Categories category = categoryDAO.find(categoryId);   if (null == category) { throw new EcomException("La categorie n'existe pas"); } else { // il s'agit d'un customer product.setCategoryId(category); productDAO.create(product); }   }   /********** METHODE POUR LES CUSTOMERS      * createCustomer      * listCustomer      * modifyCustomer      * deleteCustomer      */ @Override public List<Customers> listCustomer() { List<Customers> customerList ; CustomersFacade customerDao = new CustomersFacade(); customerList = customerDao.findAll2();   return customerList; }   /**      * Permet de creer un customer a partir d'un compte existant      * @param lastName      * @param firstName      * @param email      * @param password      * @param street      * @param zipCode      * @param city      * @param countryId      * @param idAccount      * @throws EcomException      */ @Override public void createCustomer(String lastName, String firstName, String email, String password, String street, String zipCode, String city, int countryId, int idAccount) throws EcomException { // Declarations des DAOs CustomersFacade customerDAO = new CustomersFacade(); AdressFacade adressDAO = new AdressFacade(); AccountFacade accountDAO = new AccountFacade();   // Creation des references de l'objet customer Customers customer = new Customers(); Adress adress = new Adress(); List<Adress> adressList = new ArrayList();   adress.setCity(city); adress.setStreet(street); adress.setZipcode(zipCode); adress.setCountryId(new Country(countryId));   adressList.add(adress);   customer.setFirstName(firstName); customer.setLastName(lastName); customer.setEmail(email); customer.setPassword(password); customer.setAdressCollection(adressList);   Account a= accountDAO.find(idAccount);   if (null == a) { throw new EcomException("L'account n'existe pas"); } else { // Debut des transactions customer.setAccountId(a); adressDAO.create(adress); customerDAO.create(customer); } // fermeture des session }   /**      * Permet de creer un customer y compris le compte      * @param lastName      * @param firstName      * @param email      * @param password      * @param street      * @param zipCode      * @param city      * @param countryId      * @param iban      * @param balance      * @throws EcomException      */ public void createCustomer(String lastName, String firstName, String email, String password, String street, String zipCode, String city, int countryId, String iban, double balance) { // Declarations des DAOs CustomersFacade customerDAO = new CustomersFacade(); AdressFacade adressDAO = new AdressFacade(); AccountFacade accountDAO = new AccountFacade();   // Creation des references de l'objet customer Customers customer = new Customers(); Adress adress = new Adress(); List<Adress> adressList = new ArrayList(); Account account = new Account();   adress.setCity(city); adress.setStreet(street); adress.setZipcode(zipCode); adress.setCountryId(new Country(countryId));   adressList.add(adress);   account.setIban(iban); account.setBalance(balance);   customer.setFirstName(firstName); customer.setLastName(lastName); customer.setEmail(email); customer.setPassword(password); customer.setAdressCollection(adressList); customer.setAccountId(account);   // Debut des transactions accountDAO.create(account); adressDAO.create(adress); customerDAO.create(customer);   }   @Override public void modifyCustomer(String lastName, String firtName, String email) { throw new UnsupportedOperationException("Not supported yet."); }   @Override public void deleteCustomer(int id) { Customers c = null; CustomersFacade customerDao = new CustomersFacade();   c = customerDao.find(id); customerDao.remove(c); }   @Override public void addAdressToCustomer(Customers c) { throw new UnsupportedOperationException("Not supported yet."); }   @Override /**      * Permet de lister les country afin de saisir la totalite de l'adresse pour la creation d'un customer       */ public List<Country> listCountry() { List<Country> countryList = null; CountryFacade dao = new CountryFacade(); countryList = dao.findAll(); return countryList; }   @Override public List<Products> listProducts() { List<Products> productList = null; ProductsFacade productDAO = new ProductsFacade(); productList = productDAO.findAll(); return productList; }     /**      * liste les produits d'un store      * @param idStore      * @return la liste des produits d'un store      */   @Override public List<ProductStore> listProductsStore(int idStore) { List<ProductStore> productStoreList = null; ProductStoreFacade productStoreDAO = new ProductStoreFacade(); productStoreList = productStoreDAO.findByStoreId(idStore); return productStoreList; }     /**      * Liste les produits d'un catégorie      * @param idCategory      * @return une liste de produit      */ /*   @Override   public List<Product> listProductsByCategory(int idCategory) {   List<Product> productList = null;   ProductDAO productDAO = new ProductDAO();   productList = productDAO.findAllByCategory(idCategory);   productDAO.closeSession();   return productList;   } */   /**      * Liste toutes les catégories      */ public List<Categories> listCategory() { CategoriesFacade categoryDao = new CategoriesFacade(); List<Categories> categoryList = categoryDao.findAll();   return categoryList; }   @Override /**      * Retourne la catégorie en fonction de l'id      */ public Categories findCategory(int idCategory) { CategoriesFacade categoryDao = new CategoriesFacade(); Categories category = categoryDao.find(idCategory);   return category; }   @Override public List<Products> findProductsByInName(String inName) { throw new UnsupportedOperationException("Not supported yet."); } }

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Voici la trace lors d'un appel de la methodes customersFacade.findAll :

Code:

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ATTENTION: EJB5184:A system exception occurred during an invocation on EJB EcomAdminBean, method: public java.util.List ecom.session.EcomAdminBean.listCustomer() ATTENTION: javax.ejb.EJBException at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5215) at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5113) at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4901) at com.sun.ejb.containers.StatefulSessionContainer.postInvokeTx(StatefulSessionContainer.java:1651) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2045) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1994) at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:213) at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:79) at $Proxy256.listCustomer(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie.dispatchToMethod(ReflectiveTie.java:144) at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:174) at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:528) at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:199) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1624) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1486) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:990) at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:214) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:742) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:539) at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2324) at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497) at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540) Caused by: java.lang.NullPointerException at ecom.entityFacade.CustomersFacade.findAll2(CustomersFacade.java:42) at ecom.session.EcomAdminBean.listCustomer(EcomAdminBean.java:290) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) at com.sun.ejb.containers.BaseContainer.invokeTargetBeanMethod(BaseContainer.java:4180) at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5368) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348) at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:206) ... 19 more

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Si quelqu'un à une idée ou si y a besoin de plus d'informations n'hesitez pas à vous manifester.

Merci par avance :)

Cordialement

Code:

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1 2	// Creation du DAO pour creer le compte AccountFacade accountDao = new AccountFacade();

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Les EJB ne s'initialisent pas avec des new mais avec des @EJB déclarés en attributs de la classe.