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

[Dobes Vandermeer (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32803#action_32803 ] 

Dobes Vandermeer commented on HHH-2112:
---------------------------------------

I'm also seeing this issue with Map.remove(), this might be the issue (see the comments I added) but I can't prove anything yet.


	/**
	 * @see java.util.Map#remove(Object)
	 */
	public Object remove(Object key) {
		if ( isPutQueueEnabled() ) {
			Object old = readElementByIndex( key ); // returns MarkerObject UNKNOWN if the object isn't in the map
                        // add if(old == UNKNOWN) return null;
			queueOperation( new Remove( key, old ) );
			return old;
		}
		else {
			// TODO : safe to interpret "map.remove(key) == null" as non-dirty?
			initialize( true );
			if ( map.containsKey( key ) ) {
				dirty();
			}
			return map.remove( key );
		}
	}




> ClassCastException in StatefulPersistenceContext.getCachedDatabaseSnapshot(...)
> -------------------------------------------------------------------------------
>
>                 Key: HHH-2112
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2112
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects 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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