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Distributed Data Management Reply Message Builder Service

IP.com Disclosure Number: IPCOM000103636D
Original Publication Date: 1993-Jan-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Raisin, GT: AUTHOR

Abstract

The Reply Message Service is a generic Distributed Data Management (DDM) Architecture, which constructs a requested reply message into a buffer. (Distributed Data Management Architecture is a communications architecture for data management services among distributed systems. Distributed File Management (DFM) is an implementation of this architecture for MVS). The reply message building algorithm provides solutions for these design problems: Searching for a requested reply message. Redundancy of executable code when constructing a reply message. How to tailor individual reply messages. How to set different default values for the same instance variable. Adding new reply messages and new instance variables as the DDM Architecture is changed.

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Distributed Data Management Reply Message Builder Service

       The Reply Message Service is a generic Distributed Data
Management (DDM) Architecture, which constructs a requested reply
message into a buffer.  (Distributed Data Management Architecture is
a communications architecture for data management services among
distributed systems.  Distributed File Management (DFM) is an
implementation of this architecture for MVS).  The reply message
building algorithm provides solutions for these design problems:
      Searching for a requested reply message.
      Redundancy of executable code when constructing a reply
message.
      How to tailor individual reply messages.
      How to set different default values for the same instance
variable.
      Adding new reply messages and new instance variables as the DDM
Architecture is changed.

      The figure illustrates how a reply message is constructed.  An
input reply message index is used to look up an entry in the reply
message table of addresses (1 in the figure).  Addressability to the
specific reply message table is established (2 in the figure).
Information from the reply message table entry is used to build the
reply message Class and Severity Code instance variables.  The other
instance variables are built by a calling list of subroutines in the
Instance Variable Group Table (3 in the figure).  Each instance
variable subroutine (4 in the figure) processes the instance variable
a...