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  1. OMG Issue

PYTH12 — Python mapping issue: value boxes

  • Key: PYTH12-8
  • Legacy Issue Number: 4661
  • Status: closed  
  • Source: AT&T ( Duncan Grisby)
  • Summary:

    I suggest a change to the mapping for value boxes, that makes them
    much more convenient to use. I believe that none of the Python ORBs
    implement the currently specified mapping, so changing the mapping at
    this point will not affect any ORB implementations or application

    I suggest that the new mapping is:

    Value boxes are mapped to the normal mapping of the boxed type, or
    None for null value boxes. For example, given IDL

    valuetype BoxedString string;
    interface I

    { void example(in BoxedString a, in BoxedString b); }


    the operation could be called as:

    obj.example("Hello", None)


    Discussion: this mapping has one limitation, in that in a boxed object
    reference type it is impossible to distinguish a null value box from a
    non-null value box containing a nil object reference. This is
    considered acceptable since the IDL to Java mapping has the same
    property; there is a clear precedent for this kind of mapping.

  • Reported: PYTH 1.1 — Mon, 5 Nov 2001 05:00 GMT
  • Disposition: Resolved — PYTH 1.2
  • Disposition Summary:

    Accept the proposed changes

  • Updated: Fri, 6 Mar 2015 20:58 GMT