[Hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1293) java.lang.NoSuchMethodError: <persistent class>.getHibernateLazyInitializer()

[Scott M. (JIRA) <no...@at...>]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1293?page=comments#action_23607 ] 

Scott Marlow commented on HHH-1293:
-----------------------------------

Hi, I haven't found the root cause of the failure (I'm still trying to understand that), however, I do have a patch that seems to help both HHH-1103 and HHH-1293.

org.hibernate.test.proxy.ProxyTest works correctly with the hack patch (tested on Linux).

The org.hibernate.test.manysessions.ManySessionsTest works until we run out of memory (this seems to occur on Windows + Linux).  I'm not sure but I suspect that the out of memory error is separate as my standalone version of ManySessions doesn't run out of memory and it does 10000 iterations instead of just 5000.

The patch changes "org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.public static HibernateProxy getProxy(
                        final Class factory, final String entityName,
			final Class persistentClass, final Class[] interfaces,
			final Method getIdentifierMethod, final Method setIdentifierMethod,
			final AbstractComponentType componentIdType, final Serializable id,
			final SessionImplementor session)"
to ignore the factory parameter and instead invoke the other getProxy method that doesn't take the factory.  

I'm new to a lot of this code and am still trying to understand the difference between newing up the Enhancer each time versus using the factory.

> java.lang.NoSuchMethodError: <persistent class>.getHibernateLazyInitializer()
> -----------------------------------------------------------------------------
>
>          Key: HHH-1293
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1293
>      Project: Hibernate3
>         Type: Bug

>     Versions: 3.1.1
>     Reporter: Andreas Schildbach
>     Priority: Blocker
>  Attachments: hibernate3.jar, manysessions.tgz
>
>
> As documented in
> http://forum.hibernate.org/viewtopic.php?t=940119
> some people (including me) are getting this exception with the final release of Hibernate 3.1:
> java.lang.NoSuchMethodError: de.schildbach.game.integration.HibernateGamePlayer.getHibernateLazyInitializer()Lorg/hibernate/proxy/LazyInitializer;
>         at de.schildbach.game.integration.HibernateGamePlayer$$EnhancerByCGLIB$$afecb986.getHibernateLazyInitializer(<generated>)
>         at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:274)
>         at org.hibernate.type.ManyToOneType.assemble(ManyToOneType.java:177)
>         at org.hibernate.type.TypeFactory.assemble(TypeFactory.java:398)
>         at org.hibernate.cache.entry.CacheEntry.assemble(CacheEntry.java:96)
>         at org.hibernate.cache.entry.CacheEntry.assemble(CacheEntry.java:82)
>         at org.hibernate.event.def.DefaultLoadEventListener.assembleCacheEntry(DefaultLoadEventListener.java:520)
>         at org.hibernate.event.def.DefaultLoadEventListener.loadFromSecondLevelCache(DefaultLoadEventListener.java:474)
>         at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:328)
>         at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
>         at org.hibernate.event.def.DefaultLoadEventListener.returnNarrowedProxy(DefaultLoadEventListener.java:202)
>         at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:169)
>         at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
>         at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:869)
>         at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:838)
>         at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
>         at org.hibernate.type.ManyToOneType.assemble(ManyToOneType.java:177)
>         at org.hibernate.collection.PersistentList.initializeFromCache(PersistentList.java:378)
>         at org.hibernate.cache.entry.CollectionCacheEntry.assemble(CollectionCacheEntry.java:35)
>         at org.hibernate.event.def.DefaultInitializeCollectionEventListener.initializeCollectionFromCache(DefaultInitializeCollectionEventListener.java:130)
>         at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:48)
>         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.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:109)
>         at org.hibernate.collection.PersistentList.size(PersistentList.java:91)
> The exception varies with the actual persistent class in use. Most people seem to be using JDK 1.5 and Linux. Some reports say that the exception does not happen from the very start of the application, but it takes "several invocations"/"some time" until it appear, but then it appears very often.

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