Hibernate version:
3.2 GA

Mapping documents:
http://www.hibernate.org/hib_docs/annot ... ml_single/

Code between sessionFactory.openSession() and session.close():
N/A

Full stack trace of any exception that occurs:
DuplicateMappingException: Duplicate collection role mapping

Name and version of the database you are using:
N/A ((Bootstrap error)

The generated SQL (show_sql=true):
N/A (Bootstrap error)

Debug level Hibernate log excerpt:


Folks,

I am getting the error Duplicate collection role mapping, an exeption that is being thrown during the boostrap process. (DuplicateMappingException).
I have searched all the forums and mailing lists to no avail on this problem. The closest I could find on this error was actually a duplication of mapping on hibernate, which is not my case.

Here is how it happens.

I have a class in a project that runs by itself, and the following annotations:

@Entity
@Table(name="TABLE_A")
@MappedSuperClass
Class Base
{

Clollection<? extends Foo> someCollection;


@OneToMany(targetEntity=Foo.class)
public Collection<? extends Foo> getCollection() {...}
public void setCollection(Collection<? extends Foo> c) {...}
}


===== On anther level, I have

@Entity
@Table(name="TABLE_A")
@AttributeOverride(name = "someCollection", column = @Column(name = "FOO_ID"))
Class Other extends Base
{



@OneToMany(targetEntity=AFoo.class)
@Override
public Collection<? extends Foo> getSomeCollection() {...}

public void setSomeCollection(Collection<? extends Foo> c) {...}
}

On hinernate.cfg.xml, ther e is only one entry mapping for Other.class and one for AFoo.class


I am not sure why I am getting the duplicate mapping.

Any help is greatly appreciated.

Thank you in advance,

Harringf