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https://issues.apache.org/jira/browse/DERBY-3307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Waagan updated DERBY-3307:
-----------------------------------

    Attachment: derby-3307-1a-test_repro.diff

'derby-3307-1a-test_repro.diff' can be used as a repro for this issue. It adds 
another test to jdbc4.StatementEventsTests.

> NPE in PooledConnction event notification handling if a null listener is added
> ------------------------------------------------------------------------------
>
>                 Key: DERBY-3307
>                 URL: https://issues.apache.org/jira/browse/DERBY-3307
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.3.2.1, 10.4.0.0
>            Reporter: Kristian Waagan
>            Priority: Minor
>         Attachments: derby-3307-1a-test_repro.diff
>
>
> If a null reference is passed in to one of the 
> ClientPooledConnection.addXEventListener, a NPE will be thrown if an event 
> occurs.
> I will attach a simple repro as a patch to the test 
> jdbc4.StatementEventsTests. I believe the situation is the same for 
> connection event listeners.
> I have found no information in the specs regarding null listeners, but I 
> assume it would be okay to ignore them.

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