CORBA 3.4 RTF Avatar
  1. OMG Issue

CORBA34 — TypeCode complexity for value types

  • Key: CORBA34-367
  • Legacy Issue Number: 1726
  • Status: open  
  • Source: Anonymous
  • Summary:

    Summary: The OBV design for the "CORBA::tk_value" TypeCode defines a
    potentially recursive constructed type that involves ValueMembers.
    The "tk_value" TypeCode defines the entire complexity of the types
    within the Value.

    It is our understanding that when the ORB code that handles "Anys" for
    C++ detects a tk_value TypeCode and needs to encode/decode the associated
    Value object – (e.g., for Any::replace(TypeCode, void *) – it will
    need to invoke a method on that object that understands the object
    instance data and the associated state information. Further
    examination of the TypeCode complexity will not be necessary by the
    Any implementation, since this code would not have knowledge of or
    ability to set the state information within the Value object itself.

    The reason why the layout of the state information within a value
    cannot be known by external code is that virtual inheritance of
    abstract values and/or abstract interfaces makes it impossible to
    calculate the offsets of the data members in a compiler
    independent manner.

  • Reported: CORBA 2.2 — Thu, 23 Jul 1998 04:00 GMT
  • Updated: Tue, 8 Oct 2019 18:02 GMT