Andi Huber created CAUSEWAY-3797:
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             Summary: [Wicket Viewer] Not every table column is sortable, yet 
always offers sorting.
                 Key: CAUSEWAY-3797
                 URL: https://issues.apache.org/jira/browse/CAUSEWAY-3797
             Project: Causeway
          Issue Type: Bug
          Components: Viewer Wicket
            Reporter: Andi Huber
            Assignee: Andi Huber
             Fix For: 2.1.0, 3.1.0


Not every column (as mapped to on association) is sortable!
The referenced association must implement {@link Comparable}. If not, tables 
should not offer sorting to the end-user.

Otherwise results in exception "Comparison method violates its general 
contract!" presented to the user.



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