Error when trying to upload a duplicate gadget url to widget store
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Key: RAVE-331
URL: https://issues.apache.org/jira/browse/RAVE-331
Project: Rave
Issue Type: Bug
Affects Versions: 0.5-INCUBATING
Reporter: Anthony Carlucci
Priority: Minor
How to Reproduce
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1) Login to Rave as any user
2) Upload a gadget to the widget store - verify it was added successfully
3) Go back and try to add the same gadget url again
4) You will see the standard "rave has suffered a brief meltdown" page
The issue is that the DefaultWidgetService.registerNewWidget function returns a
null Widget object if it finds the URL already in the system. The
RavePermissionEvaluator.hasPermission functions are not properly dealing with
potential null objects and thus a NPE is thrown.
How to Fix
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1) Improve the RavePermissionEvaluator.hasPermission methods to check for and
safely handle possible null objects.
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