[UseCase] HP-2 Conditional message transformation

[A small variant on the last use case. Dave]

** HP-2   Conditional message transformation

* Outline:

This is an extension to use case HP-1 (message transformation). In
HP-1 a transformed message sometimes required missing data to be
inserted in the form of static or locally computed results.  In this
extension use case there is a set of auxiliary services (Ci) that can
supply the missing information. A typical example is where the third
service is a resource registry which holds additional published
information on the resources in IA. The transformation rules are
required to consult one or more of the Ci to obtain attribute values
needed to complete the transformation from IA to IB.

* Implications

Rule patterns which include specification of a separate fact base to
consult.

One could imagine variants on this use case where there may be
conflicting information in the different Ci sources and the rule set
would be required to implement a trust policy, expression of which
would involve quantification over fact bases.

Received on Friday, 2 December 2005 11:30:10 UTC