[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2112) ClassCastException in StatefulPersistenceContext.getCachedDatabaseSnapshot(...)

[Tiago Silveira (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2112?page=comments#action_25966 ] 

Tiago Silveira commented on HHH-2112:
-------------------------------------

I still have the problem with Map.remove() using 3.2.2.GA.

java.lang.ClassCastException: org.hibernate.util.MarkerObject
	at org.tinymarbles.model.PType.remove(PType.java:172)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147)

The line in question is:

> PAttribute attribute = this.getAttributes().remove(attName);

the getter returns Map<String, PAttribute> declared as follows:

> @OneToMany(mappedBy = "type", fetch = FetchType.LAZY)
> @MapKey(name = "name")
> @Cascade(value = {CascadeType.REMOVE, CascadeType.DELETE_ORPHAN, CascadeType.SAVE_UPDATE})
> @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
> private Map<String, PAttribute> attributes = new HashMap<String, PAttribute>();

Yes, I'm using field mapping. :-)

The workaround with Map.containsKey() works for me.

> ClassCastException in StatefulPersistenceContext.getCachedDatabaseSnapshot(...)
> -------------------------------------------------------------------------------
>
>          Key: HHH-2112
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2112
>      Project: Hibernate3
>         Type: Bug

>   Components: core
>     Versions: 3.2.0.cr4
>     Reporter: Aleksei Valikov
>     Assignee: Steve Ebersole
>      Fix For: 3.2.2

>
>
> StatefulPersistenceContext.getCachedDatabaseSnapshot(EntityKey key) causes ClassCastException when NO_ROW was put for the certain entity key.
> Please see the discussion here:
> http://forum.hibernate.org/viewtopic.php?t=959868&highlight=getcacheddatabasesnapshot
> In these situations, this method should probably return null. It is very likely since other calling methods check for the returned value to be null .

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