[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4459) Query with Composite Primary Key parameter crashes when query cache is on

Query with Composite Primary Key parameter crashes when query cache is on ------------------------------------------------------------------------- Key: HHH-4459 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4459 Project: Hibernate Core Issue Type: Bug Components: caching (L2) Affects Versions: 3.3.2 Environment: Hibernate Core 3.3.2.GA, MySQL and H2 Reporter: Karol Bienkowski Attachments: HHH-4459.ZIP I have an entity with a composite identifier (primary key) annotated with EmbeddedId: @Embeddable public class CompositeKey implements Serializable { (...) } @Entity public class EntityWithCompositeKey { @EmbeddedId public CompositeKey pk; (...) } When executing query ... FROM EntityWithCompositeKey e WHERE e.pk = :pk ... where ":pk" is bound to an instance of CompositeKey ... query.setParamter("pk", new CompositeKey(..)) ... I get the following exception: javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of hhhxxxx.CompositeKey.a at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614) at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:76) at hhhxxxx.HHHHxxxxTest.testGetByCompositeId(HHHHxxxxTest.java:46) (...) Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of hhhxxxx.CompositeKey.a at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:58) at org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValue(AbstractComponentTuplizer.java:87) at org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValues(AbstractComponentTuplizer.java:93) at org.hibernate.tuple.component.PojoComponentTuplizer.getPropertyValues(PojoComponentTuplizer.java:109) at org.hibernate.type.ComponentType.getPropertyValues(ComponentType.java:376) at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:194) at org.hibernate.engine.TypedValue.hashCode(TypedValue.java:66) at java.util.HashMap$Entry.hashCode(Unknown Source) at java.util.AbstractMap.hashCode(Unknown Source) at org.hibernate.cache.QueryKey.generateHashCode(QueryKey.java:196) at org.hibernate.cache.QueryKey.<init>(QueryKey.java:173) at org.hibernate.cache.QueryKey.generateQueryKey(QueryKey.java:128) at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2144) at org.hibernate.loader.Loader.list(Loader.java:2121) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67) ... 21 more Caused by: java.lang.IllegalArgumentException: Can not set int field hhhxxxx.CompositeKey.a to [Ljava.lang.Object; at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source) at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source) at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(Unknown Source) at sun.reflect.UnsafeIntegerFieldAccessorImpl.getInt(Unknown Source) at sun.reflect.UnsafeIntegerFieldAccessorImpl.get(Unknown Source) at java.lang.reflect.Field.get(Unknown Source) at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:55) ... 40 more It used to work on 3.3.1.GA but fails in 3.3.2.GA. Turning off query cache works. The direct reason for the error is that TypedValue.value is an Object[] but ComponentType.getHashCode() expects TypedValue.value to be of CompositeKey type. I'll attach the working test case replicating the issue in a moment.