Uploaded image for project: 'Groovy'
  1. Groovy
  2. GROOVY-2503 MOP 2.0 design inflluencing issues
  3. GROOVY-1765

The equality and relational operators can not be overridden by a Category method

    Details

    • Type: Sub-task
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 1.0
    • Fix Version/s: None
    • Component/s: groovy-runtime
    • Labels:
      None
    • Environment:
      Windows/XP service pack 2, Sun Java 1.6.0

      Description

      The equality and relational operators (==, !=, <=>, >, >=, <, and <=) can not be overridden by a Category method. Though a direct call to the equals() or compareTo() methods does use the Category method (except for the Number.compareTo(Number) case which does not call the Category method).

      It would be desirable to support overriding of the equality and relational operators, both for completeness and utility's sake. This would complement the ability to override the mathematical operators (i.e. +, -, *, /, etc.) via Category methods. In particular it would allow the comparison of object types where the equals() and compareTo() methods don't directly support the desired type combinations.

      The included category and test demonstrates some of the cases in question. The OperatorCategoryTest class contains tests that demonstrate successful uses and failing ones.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                shanmann Steve Hanmann
              • Votes:
                1 Vote for this issue
                Watchers:
                0 Start watching this issue

                Dates

                • Created:
                  Updated: