ClassCastException when using a single region name for both entity and query results in Hibernate

Environment

• Red Hat JBoss Enterprise Application Platform (EAP) 7.2
• Hibernate 5.3
• Infinispan 9.3

Issue

• Declared a named cacheable query for an entity and specifying the same region name for both the query and the entity.

  @NamedQuery(name = "Employee.findAll", query = "SELECT a FROM Employee a",
          hints = {
                  @QueryHint(name = "org.hibernate.cacheable", value = "true"),
                  @QueryHint(name = "org.hibernate.cacheRegion", value = "custom-region-01")
         }
  )
  @Cache(usage = CacheConcurrencyStrategy.READ_ONLY, region="custom-region-01")
  

• When executing the named query the first time, the exception below is raised:

  ... java.lang.ClassCastException: org.infinispan.hibernate.cache.v53.impl.DomainDataRegionImpl cannot be cast to org.hibernate.cache.spi.QueryResultsRegion
      at org.hibernate.cache.internal.EnabledCaching.makeQueryResultsRegionAccess(EnabledCaching.java:491)
      at org.hibernate.cache.internal.EnabledCaching.getQueryResultsCache(EnabledCaching.java:478)
      at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2515)
      at org.hibernate.loader.Loader.list(Loader.java:2498)
      at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:504)
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:395)
      at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:220)
      at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1508)
      at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1537)
      at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505)
      at org.hibernate.query.Query.getResultList(Query.java:132)
      at org.jboss.as.jpa.container.QueryNonTxInvocationDetacher.getResultList(QueryNonTxInvocationDetacher.java:58)
  

Resolution

This issue¹ is resolved in This content is not included.EAP 7.2 cumulative patch (CP) 5 and later releases. Production systems should use the latest available cumulative patch.

Root Cause

This is a known defect (Content from hibernate.atlassian.net is not included.HHH-13586).

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