If there is an abstract parent class with SINGLE_TABLE inheritance mapped with 2 or more child entities extending it then two subsequent fetches of different children from this table fail with WrongClassException:
javax.persistence.PersistenceException: org.hibernate.WrongClassException: Object [id=1] was not of the specified subclass [bug.ChildTwo] : loaded object was of wrong class class bug.ChildOne
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602)
at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:492)
due to wrong * EntityKey * comparison at line * 99 * :
...
return EqualsHelper.equals( otherKey.persister.getRootEntityName(), persister.getRootEntityName() );
Please run *mvn clean test* in the attached test case to reproduce.
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