(debian,eclipse 3.4) "detached entity pased to persist"

[lolveley]

hi,

I use eclipse and jboss 4.2.2.
I created a EAR project (enterprise application project) which contains 2 sub-projects : an EJB project which contains some EJB and a JPA entity, and a java project which contains the client "main" method.
here is my problem : nothing at the writing of the code, but an error at the deployment :

javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: source_jpa.customer.Customer
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:629)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:218)
at org.jboss.ejb3.entity.TransactionScopedEntityManager.persist(TransactionScopedEntityManager.java:182)
at ejb.customer.CustomerBean.createCustomer(CustomerBean.java:45)

the createCustomer method is the following :

public Customer createCustomer(Customer customer, Address homeAddress) {
 if (customer==null)
 throw new ValidationException("customer object is null");
 customer.setHomeAddress(homeAddress);
 em.persist(customer);

 return customer;

I checked the mysql database, and the "t_customer" table exists but it is empty.

for a better understanding, here is the JPA class:

package source_jpa.customer;

import java.io.Serializable;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.PostLoad;
import javax.persistence.PostPersist;
import javax.persistence.PostUpdate;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;

import source_jpa.Address;
import source_jpa.exception.ValidationException;

//{|}
@Entity
@Table(name="t_customer")
public class Customer implements Serializable{

 @Id
 @GeneratedValue(strategy=GenerationType.AUTO)
 private Long id;

 @Column(unique=true,nullable=false,length=8)
 private String login;

 @Column(nullable=false,length=8)
 private String password;

 @Column(nullable=false,length=30)
 private String firstname;

 @Column(nullable=false,length=30)
 private String lastname;

 private String telephone;
 private String email;

 @Column(name="date_of_birth")
 @Temporal(TemporalType.DATE)
 private Date dateOfBirth;

 @Transient
 private Integer age;

 @OneToOne(fetch=FetchType.EAGER,cascade=CascadeType.ALL)
 @JoinColumn(name="address_fk",nullable=true)
 private Address homeAddress;

 @PrePersist
 @PreUpdate
 private void validateData() throws ValidationException{

 if (firstname==null || firstname.equals(""))
 throw new ValidationException("Invalid first name");
 if (lastname==null || lastname.equals(""))
 throw new ValidationException("Invalid last name");
 if (login==null || login.equals(""))
 throw new ValidationException("Invalid login");
 if (password==null || password.equals(""))
 throw new ValidationException("Invalid password");

 }

 @PostLoad
 @PostPersist
 @PostUpdate
 public void calculateAge(){

 if (dateOfBirth==null){
 age=null;
 return;
 }
 Calendar birth=new GregorianCalendar();
 birth.setTime(dateOfBirth);
 Calendar now=new GregorianCalendar();
 now.setTime(new Date());
 int adjust=0;
 if (now.get(Calendar.DAY_OF_YEAR)-birth.get(Calendar.DAY_OF_YEAR)<0)
 adjust=-1;
 age=now.get(Calendar.YEAR)-birth.get(Calendar.YEAR)+adjust;

 }

can you help me?

olivier.

[lolveley]

I forgot the client class :

public static void main(String[] args) {

 try {

 Context ctx=new InitialContext();

 Object rem0=ctx.lookup("petstore_ear/CustomerBean/remote");
 ejb.customer.CustomerRemote rem =
 (ejb.customer.CustomerRemote) PortableRemoteObject.narrow(rem0,
 ejb.customer.CustomerRemote.class);


 rem.createCustomer(new Customer(1L,"jambon","rose","jean","bonrause","0018654118","[e-mail]",new java.util.Date(1978,02,10),19,null),new source_jpa.Address(1,"4 rue des roses","","METZ","Moselle","57000","FRANCE"));


 System.out.println ("--- Hello, clients ---");
 for (source_jpa.customer.Customer client : rem.findCustomers()) {
 System.out.println ("client : "+client);
 }

 } catch (Exception e) {
 e.printStackTrace();
 }

 }