Repeating database queries when accessing leaf class entities marked @Cacheable / @Cache in Hibernate

Solution Verified - Updated -

Issue

  • A class hierarchy includes an abstract entity not marked with @Cacheable or @Cache

  • Each time concrete leaf class entities marked with @Cacheable or @Cache are accessed, reload from the database occurs

    ... TRACE [org.hibernate.event.internal.DefaultLoadEventListener] ... Object not resolved in any cache: [support.hibernate.entity.FullTimeEmployee#John Smith]
... DEBUG [org.hibernate.SQL] ... select fulltimeem0_.name as name1_0_0_, fulltimeem0_1_.title as title2_0_0_, fulltimeem0_.planCode as planCode1_1_0_ from FullTimeEmployee fulltimeem0_ inner join Employee fulltimeem0_1_ on fulltimeem0_.name=fulltimeem0_1_.name where fulltimeem0_.name=?

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP) 6, 7
  • Hibernate 4, 5

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