Signature

Canceling Discriminator Pattern

Classification

Advance Flow Control Pattern

Intent

A convergence point in the business process that awaits one of the incoming branches to complete before activating the subsequent activity. It can also cancel the execution of all other remaining branches

Motivation

When the first branch gets completed, the subsequent branch will trigger. However, the remaining incoming branches will not be triggered as they would be cancelled.

Applicability

1-out-of-M joins with a flag being set, is to set to abort the remaining flow pattern.

Implementation

Widely adopted in most of the modeling languages using the complex join. On the complex gateway, Abort Pending Flows must be checked, and the completion condition testing for the number of active instances should be equal to 1. When this complex gateway gets triggered, it would cancel the execution of all of the other incoming branches and reset the construct.

Known issues

NA

Known solution

NA

Signature

Partial Join Pattern

Classification

Advance Flow Control Pattern

Intent

A convergence point, in the business process of "m" branches into one subsequent branch only when "n" incoming branches are enabled, where "n" will be less than "m". However, once the join is triggered, it would also lead to cancelling the execution of all the remaining incoming paths and reset the convergence point.

Motivation

The convergence point will trigger synchronization and produce a single token for the outgoing edge, only when a defined threshold is reached. In case of N out of M join, N is defined as the trigger for the convergence point (the complex join gateway). Once the trigger is fired and a single token is produced for the outgoing edge, then the remaining incoming paths will be cancelled.

The convergence point will reset only when all the active incoming branches will be enabled.

Applicability

N-out-of-M joins and a flag being set to Abort Remaining Flows.

Implementation

Widely adopted in most of the modeling languages using the complex join. On the complex gateway, Abort Pending Flows must be checked.

Known issues

Determination of cancel region.

Known solution

Structured processes.