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Colleagues,
Using JPA I need resolve following issue: at database level exits 3 entities (saying SuperEntity, DetailsAEntity and DetailsBEntity). SuperEntity contains common part of fields for DetailsAEntity and DetailsBEntity.
So the question: is it possible to resolve collection of mixed elements DetailsAEntity and DetailsBEntity from JPA? May be exits some extension in toplink to specify class for entity?
Assuming SuperEntity is mapped as the root of the inheritance tree then the result of queries for this type can return a heterogeneous collection of its concrete subclasses.