Stefaan Dutry created WW-4689:
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             Summary: CycleDetector - use enum instead of String constants
                 Key: WW-4689
                 URL: https://issues.apache.org/jira/browse/WW-4689
             Project: Struts 2
          Issue Type: Improvement
            Reporter: Stefaan Dutry
            Priority: Trivial


{{com.opensymphony.xwork2.config.providers.CycleDetector}} currently uses 
String constants as values of a {{HashMap}} to keep up with the status of the 
vertexes.

This could be replaced with an enum.

see [pull request 111|https://github.com/apache/struts/pull/111] for change 
suggestion



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