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Modeling Flexible Business Processes with Business Rule Patterns
Milan Milanović1, Dragan Gašević2, Luis Rocha2
1University of Belgrade, Serbia2Athabasca University, AB, Canada
https://semtech.athabascau.ca
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Motivation Modeling flexible business process
Integration of rules in processes
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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 + +
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Rule and Processes Observations
Implementation focus primarily Development complexity Weak integration with information modeling Questionable declarative definition of rules
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To what extent can a rule-enhanced
business process modeling language address the observed problems
MODELS 2009
Research Objective
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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
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Rule Modeling REWERSE I1 Rule Markup Language (R2ML)
with a UML-based graphical concrete syntax
MODELS 2009
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REWERSE I1 Rule Markup Language
MODELS 2009
Extension for Rule Models
rBPMN metamodel weaving
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rBPMN Example
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rBPMN Example
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http://code.google.com/p/rbpmneditor/
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rBPMN Editor
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http://code.google.com/p/rbpmneditor/wiki/Patterns
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Control Flow Decisions Decision logic abstraction pattern
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Data Constraints Constraints at multiple checkpoints
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Data Constraints Constraints at multiple checkpoints
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Data Constraints Constraints enforced by external data context
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Dynamic BP Composition Business rule-based subprocess selection
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Dynamic BP Composition Business rule-based subprocess selection
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Book Store Case Study
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Case Study – Book Store
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Case Study – Book Store
Constraints at predefined checkpoint
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Case Study – Book StoreDecision point abstraction pattern
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Case Study – Book Store
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Rules in the process Reaction rules attached to R2
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Case Study – Book Store
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Case Study – Book StoreDecision node to business rule binding
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Case Study – Book Store
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Case Study – Book StoreSub-process selection
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ComparisonPattern 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 + + + +
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Systematic rules & process modeling Same abstraction level & shared vocabularies Declaratively expressed rules Higher potential for BP flexibility
MODELS 2009
Conclusion
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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
MODELS 2009
Future Work
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Thank you!
Questions?
https://semtech.athabascau.ca