@MapKey throws an exception if the key is part of a non-embedded composite ID ----------------------------------------------------------------------------- Key: ANN-599 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-599 Project: Hibernate Annotations Issue Type: Bug Components: binder Affects Versions: 3.3.0.ga Environment: Hibernate Core 3.2.3, Annotations 3.3.0.GA, Oracle 9i, Java5 Reporter: Chris Rose Priority: Minor Like mentioned in ANN-43, the property binder for MapKey does not completely handle identifier properties in the owned entity. Unlike that issue, which is clearly fixed, this issue comes when the mapped entity has a composite primary key that is _not_ handled with a separate PK class. For example: class Owner { @Id Long getOwnerId () {} @OneToMany(mappedBy="owner") @MapKey(name="propertyName") Map<String,Value> getProperties (){} } class Value { @Id String getPropertyName () {} @Id Long getOwnerId (){} @ManyToOne @JoinColumn(name="owner_id") Owner getOwner () } This generates an exception when I initialize the session: 11:36:27,800 INFO CollectionBinder:627 - Mapping collection: Owner.properties -> properties Exception in thread "main" org.hibernate.AnnotationException: Map key property not found: Value.propertyName at org.hibernate.cfg.annotations.MapBinder.bindKeyFromAssociationTable(MapBinder.java:103) at org.hibernate.cfg.annotations.MapBinder.access$000(MapBinder.java:53) at org.hibernate.cfg.annotations.MapBinder$1.secondPass(MapBinder.java:83) at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:43) at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1130) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:316) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1286) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:915) at com.planet.core.SessionFactoryTest.main(SessionFactoryTest.java:46) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira