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From "Jerry Cwiklik (JIRA)" <uima-...@incubator.apache.org>
Subject [jira] Created: (UIMA-1727) CPM doesnt validate registered CallbackListener references
Date Mon, 18 Jan 2010 21:06:55 GMT
CPM doesnt validate registered CallbackListener references 
-----------------------------------------------------------

                 Key: UIMA-1727
                 URL: https://issues.apache.org/jira/browse/UIMA-1727
             Project: UIMA
          Issue Type: Bug
          Components: Collection Processing
            Reporter: Jerry Cwiklik
            Assignee: Jerry Cwiklik


The CPM uses a list of registered listeners to notify an application of certain events. The
application registers listeners with the CPM before it starts the run. Apparently, the CPM
doesnt validate a listener reference provided by the application and blindly adds it a list.
If the reference is null, the NPE is thrown when trying to send notifications. Fix the code
to validate listener reference to prevent adding null references.

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