The document discusses the integration of business rules within flexible business process modeling, focusing on the development of a rule-enhanced business process modeling language that combines BPMN2 and R2ML. It outlines various modeling patterns for decision logic and data constraints, along with a book store case study to illustrate the process. The research aims to improve expressivity and flexibility in business process modeling while addressing existing integration challenges.

1. Modeling Flexible Business Processes with Business Rule Patterns Milan Milanović 1 , Dragan Gašević 2 , Luis Rocha 2 1 University of Belgrade, Serbia 2 Athabasca University, AB, Canada https://semtech.athabascau.ca

2. Motivation Modeling flexible business process Integration of rules in processes

3. Motivation Modeling flexible business process Integration of rules in processes Patterns for Rules in BPs [Graml et al., 2007] Control flow decisions Control flow decisions Rule types DR IR PrR Control flow decisions Decision logic abstraction + Decision node to business rule binding + Decision with flexible input data + Decision flexible output + + Data constraints Constraints at predefined checkpoint + Constraints at multiple checkpoints + Constraints enforced by external data context + Dynamic BP composition Business rule-based subprocess selection + Business rule-based process composition + +

4. Rule and Processes Observations Implementation focus primarily Development complexity Weak integration with information modeling Questionable declarative definition of rules

5. To what extent can a rule-enhanced business process modeling language address the observed problems Research Objective MODELS 2009

6. Rule-enhanced BP modeling language Integrates BPMN2 and R2ML (EDOC 2009) Improved expressivity (BuRO 2010) A rule can be associated with a flow element Advice-like types – before, after around Models rule-enhanced Orchestrations (CASCON 2009) Choreographies (EDOC 2010) rBPMN

7. Rule Modeling REWERSE I1 Rule Markup Language (R2ML) with a UML-based graphical concrete syntax MODELS 2009

8. REWERSE I1 Rule Markup Language Extension for Rule Models MODELS 2009 rBPMN metamodel weaving

9. rBPMN Example

10. rBPMN Example

11. http://code.google.com/p/rbpmneditor/

12. rBPMN Editor

13. http://code.google.com/p/rbpmneditor/wiki/Patterns

14. Control Flow Decisions Decision logic abstraction pattern

15. Data Constraints Constraints at multiple checkpoints

16. Data Constraints Constraints at multiple checkpoints

17. Data Constraints Constraints enforced by external data context

18. Dynamic BP Composition Business rule-based subprocess selection

19. Dynamic BP Composition Business rule-based subprocess selection

20. Book Store Case Study

21. Case Study – Book Store

22. Case Study – Book Store Constraints at predefined checkpoint

23. Case Study – Book Store Decision point abstraction pattern

24. Case Study – Book Store

25. Rules in the process Reaction rules attached to R 2

26. Case Study – Book Store

27. Case Study – Book Store Decision node to business rule binding

28. Case Study – Book Store

29. Case Study – Book Store Sub-process selection

30. Comparison Pattern group Pattern name Original rBPMN DR IR PrR DR IR PR RR Control flow decisions Decision logic abstraction + + + Decision node to business rule binding + + + Decision with flexible input data + + + Decision flexible output + + + Data constraints Constraints at predefined checkpoint + + Constraints at multiple checkpoints + + Constraints enforced by external data context + + + Dynamic BP composition Business rule-based subprocess selection + + Business rule-based process composition + + + +

31. Systematic rules & process modeling Same abstraction level & shared vocabularies Declaratively expressed rules Higher potential for BP flexibility Conclusion MODELS 2009

32. Formal verification of rBPMN processes Petri Nets and well-formedness Executable rBPMN Concrete syntax Reduction of the graphical concrete syntax Semi-structure English for rules Controlled experiments Maintainability and usability Future Work MODELS 2009

33. Thank you! Questions? https://semtech.athabascau.ca