Uploaded image for project: 'Groovy'
  1. Groovy
  2. GROOVY-9909

Cannot call super when overriding an interface default method

    XMLWordPrintableJSON

Details

    Description

      Suppose you have:

      public interface MyInterface {
  default String getFoo() { return "foo"; }
}

      and a Groovy class implementing it:

      @CompileStatic
class MyClass implements MyInterface {
  @Overridde
  String getFoo() {
    return MyInterface.super.getFoo();
  }
}

      This produces multiple compiler errors, like:

      - Groovy:[Static type checking] - No such property: super for class: java.lang.Class <MyInterface>
- Groovy:The usage of 'Class.this' and 'Class.super' is only allowed in nested/inner classes

      If I replace it with:

      @CompileStatic
class MyClass implements MyInterface {
  @Overridde
  String getFoo() {
    return super.getFoo();
  }
}

      I get:

      Groovy:[Static type checking] - Cannot find matching method java.lang.Object#getFoo(). Please check if the declared type is correct and if the method exists

      I find no way to properly override a default method while calling the super implementation.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. GROOVY-10494 Groovy 4 can not compile super.foo with generic interface (or trait) method

          • Major - Major loss of function.
          • Closed

          Activity

            People

              emilles Eric Milles
              mauromol Mauro Molinari
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: