Issue 3741: Simulation specification issue (issues)
Source:  (, )
Nature: Uncategorized Issue
Severity: 
Summary: The High Level Archicture Programmers Guide states
(8.3) Encoding and Object Updates:
"When producing an AHVPS [AttributeHandleValuePairSet, Ralf.],
 the federate is responsible for any data marshalling (encoding)."

This principles has been transferred to the DSS proposal,
but encoding is what ORBs are good for;
a participant in distributed simulation should not explicitly handle it.

Attribute type names will be listed in the FOM/SOM description
and are mapped to RTI internal handles,
but that does not help with generating or interpreting value encodings.

As we already have a runtime type information packager (CORBA Any),
we should use it and replace all occurences of "AttributeHandleValuePairSet"
at least with "any", so a common coding scheme will be used.
The same holds for HLA interaction parameters.

Resolution: 
Revised Text: 
Actions taken:
June 20, 2000: received issue
Discussion: 

End of Annotations:=====
X-Mailer: exmh version 2.1.1 10/15/1999
To: issues@omg.org
Cc: fkuhl@mitre.org
Subject: Re: IDL for Distributed Simulation 
In-reply-to: Your message of "Thu, 18 May 2000 09:04:06 EDT."
             <3923EA46.AB710C39@mitre.org> 
Mime-Version: 1.0
Date: Tue, 20 Jun 2000 09:44:10 +0200
From: Ralf Bachmann <bachmann@informatik.uni-hamburg.de>
Content-Type: text/plain; charset=us-ascii
X-UIDL: "Kd!!K?i!!$3*!!UZld9

Frederick Kuhl wrote:
> The spec probably needs another RTF to deal with the problems you
mention
> (and some others).

Another revision issue should be the coding scheme
for simulation supplied data.

The High Level Archicture Programmers Guide states
(8.3) Encoding and Object Updates:
"When producing an AHVPS [AttributeHandleValuePairSet, Ralf.],
 the federate is responsible for any data marshalling (encoding)."

This principles has been transferred to the DSS proposal,
but encoding is what ORBs are good for;
a participant in distributed simulation should not explicitly handle
it.

Attribute type names will be listed in the FOM/SOM description
and are mapped to RTI internal handles,
but that does not help with generating or interpreting value
encodings.

As we already have a runtime type information packager (CORBA Any),
we should use it and replace all occurences of
"AttributeHandleValuePairSet"
at least with "any", so a common coding scheme will be used.
The same holds for HLA interaction parameters.


========================================================================

               Universitaet Hamburg
               Fachbereich Informatik

Ralf Bachmann  Angewandte und sozialorientierte Informatik (ASI)
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