Hi,

I am using hibernate version 3.2.0.CR2 and trying to map classes through Annotations(version 3.2.0.CR1).
I have got the following classes and am trying to refer to some other entity through one of the elements in composite primary key.


@Entity
@Table(name="B_level")
@AssociationOverride(
name="AEntityPk.B",
joinColumns=@JoinColumn(name="B_id", referencedColumnName="id")
// one of primary key elements referring to some other entity with column name "B_id"
)
public class AEntity implements Serializable {
...
private AEntityPk AEntityPk; // composite primary key
...
}

@Embeddable
public class AEntityPk implements Serializable {
...
private BEntity B;
...
}

@Entity
@Table(
name="B",
uniqueConstraints={@UniqueConstraint(columnNames={"id", "c"})}
)
public class BEntity implements Serializable {

@OneToMany(mappedBy="AEntityPk.B")
// This is an erroneous mapping. Suggest the right one!!
public Set<AEntity> getAs() {
return As;
}
public void setAs(Set<AEntity> As) {
this.As = As;
}
}


I am able to retrieve unidirectional ManyToOne mapping but when i am trying to make this mapping work as bidirectional OneToMany i am getting a MappingException. Following is the stackTrace for the exception.


org.hibernate.AnnotationException: mappedBy reference an unknown property: com.drishti.dacx.server.cc.configuration.hierarchy.AEntity.AEntityPk.B in com.drishti.dacx.server.cc.configuration.hierarchy.BEntity.AEntityPk.B
at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:503)
at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:468)
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:35)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1049)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:302)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1205)
at com.drishti.dacx.core.configuration.impl.ConfigurationManager.startComponent(ConfigurationManager.java:152)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)


I am using Postgresql 8.0 as the database server.
Kindly make me figure out the mapping exception and also try suggesting database optimizations, if required by this mapping.

Thanks.