Dear GWT developers,
I have a "probably simple" problem with my application which I am obviously
not able to solve.
Two Classes: Company, Tradesman
@Entity
public class Company {
@OneToMany(cascade = CascadeType.ALL, mappedBy = "company")
private List<Tradesman> users = new ArrayList<Tradesman>();
....
}
@Entity
public class Tradesman extends User{
@ManyToOne
private Company company;
*@PrePersist*
public void hashPassword(){
setPassword(BCrypt.hashpw(entity.getPassword(), BCrypt.gensalt());
}
*JSR 303 validation on GWT is activated.*
Here is the *error message:
*Detected attempt to establish Company(no-id-yet) as the parent of
Tradesman(356) but the entity identified by Tradesman(356) has already been
persisted without a parent. A parent cannot be established or changed once
an object has been persisted.
My problem is obviously that when I change some parameters within the
Tradesman entity within the *@PrePersist* method, a new child entity is
created.
In case I do not touch any parameter, in the @PrePersist, everything works
fine.
What am I doing wrong here?
Thank you in advance:
Nermin
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