Patterns

Basic Control Patterns

	Sequence - execute activities in sequence
	Parallel Split - execute activities in parallel
	Synchronization - synchronize two parallel threads of execution
	Exclusive Choice - choose one execution path from many alternatives
	Simple Merge - merge two alternative execution paths

Advanced Branching and Synchronization Patterns

	Multiple Choice - choose several execution paths from many alternatives
	Synchronizing Merge - merge many execution paths. Synchronize if many paths are taken. Simple merge if only one execution path is taken
	Multiple Merge - merge many execution paths without synchronizing
	Discriminator - merge many execution paths without synchronizing. Execute the subsequent activity only once
	N-out-of-M Join - merge many execution paths. Perform partial synchronization and execute subsequent activity only once

Structural Patterns

	Arbitrary Cycles - execute workflow graph w/out any structural restriction on loops
	Implicit Termination - terminate if there is nothing to be done

Patterns Involving Multiple Instances

	MI without synchronization - generate many instances of one activity without synchronizing them afterwards
	MI with a priori known design time knowledge - generate many instances of one activity when the number of instances is known at the design time (with synchronization)
	MI with a priori known runtime knowledge - generate many instances of one activity when a number of instances can be determined at some point during the runtime (as in FOR loop but in parallel)
	MI with no a priori runtime knowledge - generate many instances of one activity when a number of instances cannot be determined (as in WHILE loop but in parallel)

State-based patterns

	Deferred Choice - execute one of the two alternatives threads. The choice which thread is to be executed should be implicit.
	Interleaved Parallel Routing - execute two activities in random order, but not in parallel.
	Milestone - enable an activity until a milestone is reached

Cancellation Patterns

	Cancel Activity - cancel (disable) an enabled activity
	Cancel Case - cancel (disable) the process

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Last updated: donderdag februari 22, 2007.