[omniORB] need help with IDL

[David Riddoch]

On Mon, 26 Jul 1999, Rick Ethington wrote:

> i am looking for some advice about how to express a data type
> using idl. the type is similar to the nvlist with some
> differences.
> 
> we refer to it as a key value set, it is a set of key value pairs.
> in our case the keys are 32 bit integers and the values have
> various types. the types can be interger, unicode string, boolean,
> integer range (structure containing 2 integers), or another
> key value set. arrays of each of the types are also permitted.


The following includes some of what you want I think.  The rest should be
fairly obvious.


enum kvset_t { INT, INT_SEQ, INT_RNG, KV };


struct irange { short low, high; };


struct kvset_m {

  unsigned long key;

  union kvset_val switch(kvset_t) {
  case INT:      short             i;
  case INT_SEQ:  sequence<short>   is;
  case INT_RNG:  sequence<irange>  ir;
  case KV:       sequence<kvset_m> set;
  } value;

};


typedef sequence<kvset_m> kvset;


> most of the types are readily represented, but the ability
> of a kvset to contain a kvset has us puzzled. the documentation
> says something about recursive types not being supported. not
> sure if that was only for 'any' or not.

That is out of date.  Recursive types are now fully supported.  Where did
you read this?  (So I can correct it!)


Hope that helps,
David