Here is the full stack trace:
org.hibernate.WrongClassException: Object with id: 1 was not of the specified
subclass: org.jbpm.bpel.variable.def.SchemaType (loaded object was of wrong
class)
at org.hibernate.loader.Loader.instanceAlreadyLoaded(Loader.java:1235)
at org.hibernate.loader.Loader.getRow(Loader.java:1186)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:569)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1919)
at
org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:71)
at
org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:520)
at
org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at
org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1627)
at
org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:344)
at
org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentMap.values(PersistentMap.java:198)
at org.hibernate.type.MapType.getElementsIterator(MapType.java:39)
at
org.hibernate.type.CollectionType.getElementsIterator(CollectionType.java:188)
at
org.hibernate.engine.CascadingAction.getAllElementsIterator(CascadingAction.java:266)
at
org.hibernate.engine.CascadingAction.access$100(CascadingAction.java:21)
at
org.hibernate.engine.CascadingAction$2.getCascadableChildrenIterator(CascadingAction.java:52)
at
org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:288)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:185)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:160)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:108)
at org.hibernate.engine.Cascade.cascade(Cascade.java:248)
at org.hibernate.engine.Cascade.cascade(Cascade.java:223)
at
org.hibernate.event.def.DefaultDeleteEventListener.cascadeBeforeDelete(DefaultDeleteEventListener.java:220)
at
org.hibernate.event.def.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:169)
at
org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:110)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:764)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:757)
at
org.hibernate.engine.CascadingAction$2.cascade(CascadingAction.java:47)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:213)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:157)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:108)
at
org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:290)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:185)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:160)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:108)
at org.hibernate.engine.Cascade.cascade(Cascade.java:248)
at org.hibernate.engine.Cascade.cascade(Cascade.java:223)
at
org.hibernate.event.def.DefaultDeleteEventListener.cascadeBeforeDelete(DefaultDeleteEventListener.java:220)
at
org.hibernate.event.def.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:169)
at
org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:110)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:764)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:743)
at
org.jbpm.db.GraphSession.deleteProcessDefinition(GraphSession.java:236)
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