Additional SOA Patterns –Supporting Composition Controllers - Applied SOA Patterns on the Oracle Platform - page 547

• A customer (such as US Ministry of Defense, for instance) wants to deliver spe-
cial cargo without entering certain ports in certain countries
• Obviously, the vessel must be appropriate, for instance, you cannot load a cater-
pillar heavy duty truck on any Ro-Ro vessel; sometimes vessels that have decks
with adjustable heights will be necessary
• Obviously, a customer's port of destination must have unloading as the port-call
property; otherwise, it serves no purpose
This is just a tiny part of the business rules; the complete one will require three pages,
where some conditions will be technically unrelated to the Schedule object, such as the
nationality of the crew or the last three ports where the crew members embarked. A
change in any of these conditions could lead to publishing/propagating the schedule to the
customer or revoking it: port-call purpose change, removing port call in restricted area,
and so on. The purpose of detecting and analyzing the Object Context is clearly visible
from this example:
Rules are a source of information for Rules Engine to make decisions regarding messages'
trading partners and actions. Rules are based on the following available information:
• Basics Event (BE) , provided by Business Application (BA) . BA can provide a
Business Event's description directly in some cases.