[UIMA-1727] CPM doesnt validate registered CallbackListener references

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3AS
• Component/s: Collection Processing
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 18/Jan/10 21:05
• Updated: 15/Sep/10 19:00
• Resolved: 18/Jan/10 21:18

Description

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.