Return to contents

ActRelationshipJoin A code specifying how concurrent Acts are resynchronized in a parallel branch construct. Discussion: This attribute is part of the workflow control suite of attributes. An action plan is a composite Act with component Acts. In a sequential plan, each component has a sequenceNumber that specifies the ordering of the plan steps. Branches exist when multiple components have the same sequenceNumber. Branches are parallel if the splitCode specifies that more than one branch can be executed at the same time. The joinCode then specifies if and how the braches are resynchronized. The principal re-synchronization actions are (1) the control flow waits for a branch to terminate (wait-branch), (2) the branch that is not yet terminated is aborted (kill-branch), (3) the branch is not re-synchronized at all and continues in parallel (detached branch). A kill branch is only executed if there is at least one active wait (or exclusive wait) branch. If there is no other wait branch active, a kill branch is not started at all (rather than being aborted shortly after it is started.) Since a detached branch is unrelated to all other branches, active detached branches do not protect a kill-branch from being aborted. This table controls values for structural elements of the HL7 Reference Information Model. Therefore, it is part of the Normative Ballot for the RIM.
Lvl | Type, Domain name and/or Mnemonic code | Concept ID | Mnemonic | Print Name | Definition/Description
--- | --- | --- | --- | --- | ---
1 | L: (D) | C10364 | D | detached | Detach this branch from the other branches so it will not be resynchronized with the other branches.
1 | L: (X) | C10363 | X | exclusive wait | Wait for any one of the branches in the set of exclusive wait branches to terminate, then discontinue all the other exclusive wait branches.
1 | L: (K) | C10362 | K | kill | When all other concurrent branches are terminated, interrupt and discontinue this branch.
1 | L: (W) | C10361 | W | wait | Wait for this branch to terminate.

Return to contents

Last Published: 03/27/2006 3:35 AM

HL7® Version 3 Standard, © 2005 Health Level Seven®, Inc. All Rights Reserved.

HL7 and Health Level Seven are registered trademarks of Health Level Seven, Inc. Reg. U.S. Pat & TM Off