Information technology - Open distributed processing - Protocol support for computational interactions
Standards Australia
Based on the framework of abstractions and concepts developed in the Reference Model for Open Distributed Processing. It defines how interactions between computational objects in a computational specification of a system relate to protocol support for those interactions in an engineering specification of that system.
RECONFIRMATION NOTICE
Technical Committee IT-015 has reviewed the content of this publication and in accordance
with Standards Australia procedures for reconfirmation, it has been determined that the
publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original
date of publication. Users are advised to ensure that they are using the latest versions of
such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 17 March 2014.
The following are represented on Technical Committee IT-015:
Australian Computer Society
Australian Society for Technical Communication (NSW)
Charles Sturt University
Department of Defence (Australia)
Griffith University
La Trobe University
National Association of Testing Authorities Australia
National ICT Australia
NSW Business Chamber
Quantitative Enterprise Software Performance
Systems Engineering Society of Australia
University of Technology, Sydney
This Recommendation | International Standard is based on the framework of abstractions and concepts developed in the Reference Model for Open Distributed Processing (ITU-T Rec. X.902 | ISO/IEC 10746-2 and ITU-T Rec. X.903 | ISO/IEC 10746-3).
This Recommendation | International Standard defines how interactions between computational objects in a computational specification of a system relate to protocol support for those interactions in an engineering specification of that system. In particular it:
– defines a General Interworking Framework (GIF);
– within the GIF, defines a set of facilities each comprising a set of functionally-related service primitives as abstract definitions of the interactions of basic engineering objects and channel objects;
– defines the parameters of the service primitives of the GIF;
– defines the permitted sequence of the service primitives by means of state tables;
– specifies, in annexes, the mapping of the GIF service primitives and their parameters to the messages and fields of particular protocols.
As specified in this Recommendation | International Standard, the GIF defines protocol support for a pragmatic subset of the possible computational interactions defined in ITU-T Rec. X.903 | ISO/IEC 10746-3. It is also restricted in the features of the protocol support and the supported transparencies.
The GIF, as specified here, defines:
– support for computational operations, but not for streams;
– support using stub, binder and protocol objects hierarchically, such that any interaction at the interworking reference point of the supporting protocol object supports liaisons of one of those objects or of the basic engineering object, and any interaction to support those liaisons is passed via that interworking reference point; and
– interactions at a single interworking reference point, from the perspective of one side; interceptors are not explicitly considered;
NOTE 1 – It is intended that the GIF could be extended, in a future amendment, to support streams and flows. The present specification is restricted to areas that are technically stable.
The GIF supports at least some forms of:
– access transparency; and
– location transparency.
The GIF as specified here also supports a limited equivalent of relocation transparency. Other transparencies are not addressed in this present specification.
NOTE 2 – It is intended that the GIF could be extended, in future amendments, to support additional transparencies.
The GIF does not explicitly model Quality of Service requirements.
The application of security-related issues to the GIF are not included in the current text and are for further study.
The set of mappings to particular protocols specified in annexes to this Recommendation | International Standard is not exhaustive. The GIF could be mapped to other protocols.
NOTE 3 – In particular, a mapping to the DCOM protocol family would be a candidate for an additional annex.
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| ProductNote | Reconfirmed 20/05/2014. This standard has been reconfirmed in Australia in 2014 and remains current in New Zealand. Reconfirmation Notice 20/05/2014 |
| Committee | IT-015 |
| Supersedes |
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