RowkeySetAttributeChange should handle gracefully when the RowKeySet object it
is remembering could be in invalid state
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Key: TRINIDAD-2106
URL: https://issues.apache.org/jira/browse/TRINIDAD-2106
Project: MyFaces Trinidad
Issue Type: Bug
Components: Components
Affects Versions: 1.2.12-core
Reporter: Prakash Udupa
The implementation of RowKeySetAttributeChange assumes that RowKeySet values of
attributes can be saved off and restored at a later point in time. Reality is
that some implementations of RowKeySet can be strongly bound to their model
layer that basic collection operations like iterator() / addAll() would fail
with any kind of exceptions, because between the time it was saved to the time
it is tried to be restored, the underlying model has become stale.
The fix for the issue is for RowKeySetAttributeChange to defensively check if
the remembered RowKeySet is in a valid state (iterable / operable) before
attempting to restore the customization. A similar bug was encountered and
solved in trunk and 2.0.0.1 branch as part of solving TRINIDAD-2073. So this
issue does not exist in those branches. I'd submit a patch over 1.2.12.5.1
branch soon.
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