Hi!

I'm really not sure how to map my id property in my class, since this id is generated in the db by a trigger. I've read the documentation and i had the impression that what i should do was:

class Users {

...

@Id
@Generated(GenerationTime.ALWAYS)
@Column(name="COD_USER", nullable=false,insertable = false, updatable = false)
public Long getCodUser() {
return codUsuario;
}
...
}

or

class Users {

...

@Id
@Generated(GenerationTime.INSERT)
@Column(name="COD_USER", nullable=false,insertable = false, updatable = false)
public Long getCodUser() {
return codUsuario;
}
...
}

But both of them get me this exception:

exception

javax.servlet.ServletException
javax.faces.webapp.FacesServlet.service(FacesServlet.java:209)

root cause

java.lang.NullPointerException
org.hibernate.cfg.annotations.PropertyBinder.make(PropertyBinder.java:145)
org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1729)
org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1171)
org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:706)
org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:452)
org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:268)
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1210)


How am I supposed to map this?
Please i really need some help!
Thanks!
=)

No one can help me?

you need to look at something like @GenericGenerator(..., strategy="select")