Hi, What is the purpose of getClassConditions methog of SubclassJoinDiscriminatorStrategy ?
All it does is to add 'IS NULL' condition to all the subclasses. This is causing a problem in the following scenario: MountainBike and RacingBike extends Bicycle. Bicycle extends Vehicle. All are entities and Inheritance strategy is InheritanceType.JOINED on all the above classes. None of them has discrimatorycolumn. I persist Bicycle. After persisting, I try to retrieve Bicycle by em.find then it returns ObjectNotFound exception. Reason is because the query contains : select <<fields of Bicylce and Vehice>> from Bicycle,vehicle where bicycle.id = <<id passed in find>> AND bicycle.id == vehicle.id AND MountainBike.id IS NULL AND RacingBike.id IS NULL. "AND MountainBike.id IS NULL AND RacingBike.id IS NULL" is causing the ObjectNotFound exception beacuse there are no rows in MountainBike and RacingBike. The solution for this problem seems to be avoiding the call to getClassConditions() of SubclassJoinDiscriminatorStrategy.java Please help. Regards, Ravi. -- View this message in context: http://n2.nabble.com/Purpose-of-SubclassJoinDiscriminatorStrategy-getClassConditions-tp4521464p4521464.html Sent from the OpenJPA Developers mailing list archive at Nabble.com.
