[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5858) Cannot load entities with Clob or Lob properties into stateless sessions

[James Roper (JIRA)]

Cannot load entities with Clob or Lob properties into stateless sessions
------------------------------------------------------------------------

                 Key: HHH-5858
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5858
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.5.1
            Reporter: James Roper


I have a an entity with a Clob property:

{code:java}
@Lob
private Clob clobProperty;
{code}

When I try and load it in a stateless session, I get:

{noformat}
Exception in thread "main" java.lang.ClassCastException: org.hibernate.impl.StatelessSessionImpl cannot be cast to org.hibernate.engine.jdbc.LobCreationContext
	at org.hibernate.Hibernate.getLobCreator(Hibernate.java:420)
	at org.hibernate.type.ClobType.nullSafeGet(ClobType.java:114)
	at org.hibernate.type.AbstractType.hydrate(AbstractType.java:105)
	at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2267)
	at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1423)
	at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1351)
	at org.hibernate.loader.Loader.getRow(Loader.java:1251)
	at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:619)
	at org.hibernate.loader.Loader.loadSingleRow(Loader.java:307)
	at org.hibernate.impl.ScrollableResultsImpl.prepareCurrentRow(ScrollableResultsImpl.java:254)
	at org.hibernate.impl.ScrollableResultsImpl.next(ScrollableResultsImpl.java:123)
{noformat}

If Lobs in stateless sessions isn't supported, then at very least an error message to that effect should be thrown and the docs should be updated to reflect this, but I don't see why that should be the case, especially considering that both Lobs and stateless session both serve very similar purposes, they are for use when dealing with large datasets that may not fit in memory, and so could well be used together.

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