[news.eclipse.technology.jsr220-orm] Exception raised referencing a clas

[ozzyvt@xxxxxxxxxxx (Flavio Bovio)]

I have 2 classes

/// Cliente
package per;

import javax.persistence.Entity;
import javax.persistence.AccessType;
import javax.persistence.Id;
import javax.persistence.GeneratorType;
import per.Iva;

@Entity(access=AccessType.FIELD)
public class Cliente {
	@Id(generate=GeneratorType.IDENTITY)
	private int idcliente;
	private String nombre;
	private Iva iva;
	private String cuit;
	private String direccion;
......

//// Iva

package per;

import javax.persistence.Entity;
import javax.persistence.AccessType;
import javax.persistence.Id;
import javax.persistence.GeneratorType;

@Entity(access=AccessType.FIELD)
public class Iva {
	@Id(generate=GeneratorType.IDENTITY)
	private int id;
	private String descripcion;
	private String abreviacion;
	private double tasa;
	public String getAbreviacion() {
.....


I get the exception when i call

EntityManagerFactory emf = 
Persistence.createEntityManagerFactory("manager");
EntityManager em = 
emf.createEntityManager(PersistenceContextType.EXTENDED); 



Exception in thread "main" javax.persistence.PersistenceException: 
org.hibernate.MappingException: Could not determine type for: per.Iva, for 
columns: [org.hibernate.mapping.Column(iva)]
	at 
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:206)
	at 
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:37)
	at 
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
	at imp.Ins.main(Ins.java:18)
Caused by: org.hibernate.MappingException: Could not determine type for: 
per.Iva, for columns: [org.hibernate.mapping.Column(iva)]
	at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:265)
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:252)
	at org.hibernate.mapping.Property.isValid(Property.java:175)
	at 
org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:364)
	at org.hibernate.mapping.RootClass.validate(RootClass.java:191)
	at org.hibernate.cfg.Configuration.validate(Configuration.java:863)
	at 
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1027)
	at 
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:472)
	at 
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:385)
	at 
org.hibernate.ejb.HibernatePersistence.createFactory(HibernatePersistence.java:152)
	at 
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:199)
	... 3 more