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  1. HHH-9566

TypeMismatchException when getting a 2nd-level cached entity through a lazy-to-one relation

    Details

    • Type: Bug
    • Status: Awaiting Response
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 4.2.17, 4.3.8, 5.0.2
    • Fix Version/s: None
    • Component/s: hibernate-core
    • Bug Testcase Reminder (view):

      Bug reports should generally be accompanied by a test case!

    • Last commented by a user?:
      true

      Description

      The attached document is a stand-alone test case with HSQLDB 2.3.2, Hibernate 4.3.8.Final and ehcache 2.6.9, although the situation initially happened in an Oracle 10g / Hibernate 4.3.7.Final / ehcache 2.6.9 application.

      When an entity is cached and related to another through a lazy-to-one relation, getting this entity throws a TypeMismatchException.

      For example, with Order and OrderLine both instrumented and cached entities, OrderLine being related to Order through an @LazyToOne property, when executing these few lines,

      List<OrderLine> orderLines = sess.createCriteria(OrderLine.class).list();
      for (OrderLine orderLine : orderLines)

      { System.out.println(orderLine.getOrder()); }

      I get

      org.hibernate.TypeMismatchException: Provided id of the wrong type for class demo.domain.Order. Expected: class java.lang.Long, got class org.hibernate.bytecode.instrumentation.spi.LazyPropertyInitializer$1
      at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:134)
      at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1070)
      at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:989)
      at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:716)
      at org.hibernate.type.ManyToOneType.assemble(ManyToOneType.java:282)
      at org.hibernate.persister.entity.AbstractEntityPersister.initializeLazyPropertiesFromCache(AbstractEntityPersister.java:1333)
      at org.hibernate.persister.entity.AbstractEntityPersister.initializeLazyProperty(AbstractEntityPersister.java:1244)
      at org.hibernate.bytecode.instrumentation.spi.AbstractFieldInterceptor.intercept(AbstractFieldInterceptor.java:112)
      at org.hibernate.bytecode.instrumentation.internal.javassist.FieldInterceptorImpl.readObject(FieldInterceptorImpl.java:91)
      at demo.domain.OrderLine.$javassist_read_order(OrderLine.java)
      at demo.domain.OrderLine.getOrder(OrderLine.java:54)
      at demo.AppTest$2.doWithinTransaction(AppTest.java:47)
      at demo.utils.HibernateTemplate.execute(HibernateTemplate.java:21)
      at demo.AppTest.shouldFailToResolveEntityName(AppTest.java:41)

      This is also the case when working with an EntityManager instead of an Hibernate Session.

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              Dates

              • Created:
                Updated: