NullPointerException into JDBCStoreQuery

[Fabio Martelli]

Hi All,
I'm working on a customization around slice (openjpa version 2.3.0-SNAPSHOT).
Checking two subsequent bulk deletes about the same object a 
NullPointerException will be raised.

The exception has been retrieved at JDBCStoreQuery, row 527.
Considering that, in case of serialization,  the LifecycleEventManager can be 
null, is the attached patch acceptable/applicable?

Please let me know what you think about.

Best regards,
F.

--- 
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/kernel/JDBCStoreQuery.java   
    (revision 1415215)
+++ 
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/kernel/JDBCStoreQuery.java   
    (working copy)
@@ -524,7 +524,7 @@
                 // execute in-memory so the callbacks are invoked
                 LifecycleEventManager mgr = ctx.getStoreContext().getBroker()
                     .getLifecycleEventManager();
-                if (mgr.hasDeleteListeners(null, mappings[i]))
+                if (mgr!=null && mgr.hasDeleteListeners(null, mappings[i]))
                     return null;
             }
         }