[omniORB] Recursive union IDL

[Frederic Prin]

Hi 

I'm trying a recursive union:

    typedef sequence<Link> LinkSeq ;

    union Link switch(long) {
    case 0: unsigned short ta;
    case 1: string tb;
    case 2: sequence<Link> sc;
    };
(from Advanced CORBA Programming with C++ book p 209)

Omniidl complain:
Warning: Anonymous sequences for recursive unions are deprecated. Use a
forward declaration instead.

But how do I forward declare sequence<Link>  ??

Off course adding a typedef doesn't work since the Link type is not yet
known


typedef sequence<Link> LinkSeq ;

    union Link switch(long) {
    case 0: unsigned short ta;
    case 1: string tb;
    case 2: sequence<Link> sc;
    };

Something escapes me

Thanks for hints and maybe a link to an uptodate IDL C++ mapping doc!

Fred

                              (
     Frédéric Prin          )
     Senior Software Engineer /
          S I L V A C O      (
     Grenoble REsearch CEnter \
     Tel 04 56 38 10 33        )
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