Computer system transferring method, involves adjusting coordination scheme
based on migration rules part into another coordination scheme, and
transferring other components to phase based on another migration rules part
L.P.J. Groenewegen & E.P. de Vink (inventors)
	
NOVELTY - The method involves loading a migration rule set that comprises two
migration rules parts. A coordination scheme of a coordinator is adjusted
based on one migration rules part into another coordination scheme.
Components other than the coordinator are gradually transferred to a phase
based on the other migration rules part. The migration rule is discarded, as a
whole or in part, after the computer system has been transferred to the phase.

USE - Used for transferring a computer system (claimed) from a phase to
another phase.

ADVANTAGE - The method easily transfers the computer system from one phase to
another phase, without the need of turning off or resetting the computer
system.

DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a data
carrier for a computer program that is loaded on a computer system.

DESCRIPTION OF DRAWING(S) - The drawing shows a process modeling changing
processes Ad Libitum (McPal) and three sub processes, during two evolutionary
phases and during migration.

Consistency between collaborating components is notoriously difficult, even
more so when a collaboration or the components are going to evolve
dynamically, without any form of quiescence. For foreseen, non-migrating
collaborations, the coordination modelling language Paradigm tackles the
dynamic consistency problems by means of constraint orchestration. In case of
migration, originally unforeseen dynamics occur, easily leading to (more)
inconsistency.  Within the setting of migrating Paradigm models, the special
component McPal takes care of the consistency for dynamically evolving
collaborations too, by explicitly coordinating originally unforeseen
migration. The result applies both to software and its architecture and to
business processes.