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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=16491

Transform minlength validator to "minlengthorempty"

           Summary: Transform minlength validator to "minlengthorempty"
           Product: Struts
           Version: Nightly Build
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Validator Framework
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


An empty field is validated as false by the "minlength" validator. If we change
it to allow empty fields:
- we can check for emptyness by adding dependence on the "required" validator
for the desired fields
- it can be used to validate optional fields (for instance in an edit profile
form the password is only changed if set and in this case it has to be more than
x characters).

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