[omniORB] How to init a tie pointer safely

[Haarek Ryeng]

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The CORBA::is_nil(_p->_this()) will obviously throw an
exception when _p == NULL, and the way I do the check today is
by "if (_p == NULL)".

Is there a better way to do this?

- Haarek Ryeng

PS! I'll try to send only one mail next time.. (to little
coffee- yet :-) )

Haarek Ryeng wrote:

> What is the preferred way to initialise a pointer to a
> tie-class?
> And how do I maintain this pointer safely?
>
> Ex:
> Tie-class: _tie_A<A_i*,false>
> Impl-class: A_i
>
> class A_i
> {
>     // some defs......
>     _tie_A< A_i*,false >* _p;
> };
>
> A_i::A_i()
> {
>    _p = NULL // Alright?
> }
>
> A_i::InterfaceFactory()
> {
>   if ( CORBA::is_nil(_p->-this()) ) // Is this the safe way
> to check
>                                    //for a valid interface
> through the tie pointer?
>   {
>      try
>      {
>           _p = new _tie_A<A_i*,false>(this);
>           boa->obj_is_ready(_p);
>       }
>      catch( bad_alloc)
>      {
>         _p = ?  // What do I initialise it to so that the
> above “is_nil”
>                     //check is safe?
>      }
>   }// end if
> }// end factory function
>
> Any comments?
>
> Regards,
>
> Haarek Ryeng

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