Map<Entity, Entity> fails due to unique constraint on map-key column --------------------------------------------------------------------- Key: ANN-379 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-379 Project: Hibernate Annotations Type: Bug

Components: binder Versions: 3.2.0.cr1 Environment: hibernate-3.2.0.CR2, hibernate-annotations-3.2.0.CR1, jdk-1.5.0_07 Reporter: Benjamin Bentmann Assignee: Emmanuel Bernard Fix For: 3.2.0 Attachments: IndexedCollectionTest.java The current DDL statements for a true Map<Entity, Entity> produce a unique constraint on the map-key column. This effectively prevents multiple entities (hosting such a Map) from using the same map key. I tracked the problem down to org.hibernate.cfg.annotations.MapBinder and its method bindKeyFromAssociationTable, line 225. In case of an entity as the map-key, the code always sets the unique flag for the join-column... Attached is a slightly modified version of your own test case IndexedCollectionTest to reproduce the problem. The only change I made is located in the method testRealMap, adding just another Atmosphere with the same GasKey. For a more verbose problem description you might want to have a look at: http://forum.hibernate.org/viewtopic.php?t=961102