Appeal No. 2002-1812
Application 08/861,181
We reverse.
BACKGROUND
The invention relates to a method of delivering messages
between application programs.
Claim 1 is reproduced below.
1. A method of transactional control of message transfer
across a transaction-oriented data processing network
wherein a sender program is responsible for sending messages
from a first node of the network and a receiver program is
responsible for receiving messages at a second node of the
network, the method comprising:
sending messages by the sender program within a first
syncpoint-manager-controlled unit of work and receiving
messages by the receiver program within a second syncpoint-
manager-controlled unit of work, while holding the sending
and receiving operations in-doubt, uncommitted, until
resolution of the first and second units of work,
respectively, wherein the first syncpoint-manager-controlled
unit of work and the second syncpoint-manager-controlled
unit of work are logically linked so that commit processing
at resolution of said units of work comprises the steps of:
in response to successful receipt of the messages by
the receiver program, performing the sequence of steps of
committing said second unit of work, transmitting to the
sender program a positive confirmation of receipt, and in
response to the positive confirmation committing the first
unit of work; or
in response to unsuccessful receipt of the messages,
performing the sequence of steps of rolling back the second
unit of work, transmitting to the sender program a negative
confirmation of receipt, and in response to said negative
confirmation backing out the first unit of work.
The examiner relies on the following references:
Ranade 4,920,484 April 24, 1990
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