[omniORB] Re: DynAny & CORBA 2.3 spec.

[David Riddoch]

On Wed, 24 May 2000, Olivier Thiboutot wrote:

> 	We want to use OmniORB as or broker but we are not able to build
> dynamic complexe structure with DynAny and pass them as Any... like 
> 
> 	struct ToPass
> 	{
> 		short Mine;
> 		long  MyLongArray[25];
> 	}

Why not?  Try this...

/////////////////////////////////////////////////////////////
#include <omniORB3/CORBA.h>


CORBA::TypeCode_ptr create_tc(CORBA::ORB_ptr orb)
{
  CORBA::TypeCode_var a = orb->create_array_tc(25, CORBA::_tc_long);

  CORBA::StructMemberSeq m;
  m.length(2);
  m[0].name = (const char*) "Mine";
  m[0].type = CORBA::TypeCode::_duplicate(CORBA::_tc_short);
  m[1].name = (const char*) "MyLongArray";
  m[1].type = CORBA::TypeCode::_duplicate(a);

  return orb->create_struct_tc("IDL:ToPass:1.0", "ToPass", m);
}


CORBA::DynAny_ptr create_DynAny(CORBA::ORB_ptr orb, CORBA::TypeCode_ptr
tc)
{
  CORBA::DynStruct_var ds = orb->create_dyn_struct(tc);

  ds->insert_short(5);

  CORBA::DynAny_var d = ds->current_component();
  CORBA::DynArray_var da = CORBA::DynArray::_narrow(d);

  for( int i = 0; i < 25; i++ )
    da->insert_long(i);

  return ds._retn();
}


int main(int argc, char** argv)
{
  CORBA::ORB_var orb = CORBA::ORB_init(argc, argv, "omniORB3");

  CORBA::TypeCode_var tc = create_tc(orb);

  CORBA::DynAny_var d = create_DynAny(orb, tc);

  CORBA::Any_var a = d->to_any();

  return 0;
}
/////////////////////////////////////////////////////////////


> 	trying to build this with DynAny and having MyLongArray to be in
> fact a Seqence looks impossible... to transfert to a Any.

It is certainly not impossible.  Perhaps the above example will give you
enough of a hint...


Cheers,
David


PS. Its probably best if you send such queries to
<omniorb-list@uk.research.att.com> in future please.