Some popular modeling languages for business processes, e.g., BPMN, contain inclusive OR-joins (IOR-joins), but others, e.g., Petri nets, do not. Various scenarios in Business Process Management require, or benefit from, translating a process model from one language to another. This paper studies whether the control flow of a process containing IOR-joins can be translated into a control flow without IOR-joins. First we characterize which IOR-joins can be replaced locally and define a local replacement for each replaceable IOR-join. Then, we present examples that cannot be locally replaced but have a more general translation. We give a non-local replacement technique, together with its condition of applicability, which runs in polynomial time. Finally, we show that there exist simple process models with an IOR-join that cannot be replaced – in the sense that its synchronization behavior cannot be obtained by any combination of AND and XOR gateways. The proof reveals an intrinsic limitation on the replaceability of IOR-joins and hence the translatability of BPMN-like control flow into Petri nets.
This technical report is the extended version of a conference publication that appears in "Business Process Management", Proc. 10th Int'l Conf. on Business Process Management "BPM," Talinn, Estonia, Lecture Notes in Computer Science, vol. 7481 (Springer, September 2012), pp.156-171
By: Cédric Favre, Hagen Völzer
Published in: RZ3824 in 2012
LIMITED DISTRIBUTION NOTICE:
This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.
Questions about this service can be mailed to firstname.lastname@example.org .