Execution Semantics of BPMN through MDE Web Application Generation, using BPMN and WebML. BPMN workshop 2011

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We describe a pragmatic approach based on Model Driven Engineering (MDE) principles for implmenting the execution semantics of BPMN. The approach is based on a two-step model transformation that transforms BPMN models into Web application models specified according to the WebML notation and then into running Web applications. Thanks to the proposed chain of model transformations it is also possible to fine tune the final application in several ways by refining the intermediate WebML application models.

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Execution Semantics of BPMN through MDE Web Application Generation, using BPMN and WebML. BPMN workshop 2011

  1. 1. Execution Semantics of BPMN through MDE Web Application Generation Marco Brambilla, Piero Fraternali Dipartimento di Elettronica e Informazione, Politecnico di Milano Contact: marco.brambilla@polimi.it marcobrambi marcobrambi BPMN Workshop, Luzern, November 21, 2011Brambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 1
  2. 2. Outline• Introduction• Model-driven BPM development cycle• ConclusionsBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 2
  3. 3. IntroductionWeb applications, Web services, and BPM are the de facto standard of modern enterprise integration Web services enable system-to-system interaction; Web applications allow distributed and ubiquitous user interaction Business process specification languages ease the definition of the business constraints, by orchestrating service executionWe offer a model-driven approach for multiparty business processes, based on Web Service orchestration and Web user interface design. BPMN WebML 3Brambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 3
  4. 4. BackgroundBusiness Process Design representing processes (of heterogeneous nature) in terms of related, structured activities or tasks that produce a specific service or product several proposals for visual modeling languages (e.g., UML, YAML, BPMN)Model Driven Architectures abstraction (separation of platform independent and platform dependent concerns) and models in Web application design and developmentWeb Engineering use of models (and model transformations) as the key artifacts for application developments several proposals (e.g., UML, Hera, OOHDM, UWE, W2000, WebML) 4Brambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 4
  5. 5. ApproachModel transformation and code generation techniques to implement and deploy the process on an open platform 5Brambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 5
  6. 6. Model Driven Engineering of BPM applications• Models are amenable to be transformed into running applications, enablingfast prototyping and early assessment of alternative process socializationstrategies directly by the stakeholders• Model-Driven Engineering is the discipline that supports a generativeapproach to the creation and maintenance of application from abstract,platform-independent models• Implementation exploited WebRatio (www.webratio.com), an industrialMDE tool that manages app development in three steps: Design Customize Generate the Model the Rules the ApplicationBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 6
  7. 7. Model-driven Development Process• Manual specification of BPMN process model• Automatic transformation of BPMN to WebML• Possible manual refinement of WebML models• Automatic running code generation on J2EE platform• Virtuous development cycleBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 7
  8. 8. Models for BPMTwo types of models concur to define the application requirements:Process Model Application ModelIt is used to define: It is used to define:•Organization and roles •Page contents•Activities and assignments •Business logic•Business rules •User interface & Visual identity•Business workflow •IntegrationIt is based on BPMN notation It is based on WebML modelling languageBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 8
  9. 9. The generated model artifactsBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 9
  10. 10. Generative approach and runtime architecture Visual identity Presentation layer Process layer Business layer Data Service Integration Social networks or layer layer layer other third-party services or applications Standard Java Web application JBoss Oracle Application IBM Apache Caucho Application Server WebSphere Tomcat Resin ServerBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 10
  11. 11. DEMO http://www.webratio.comBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 11
  12. 12. Thanks. Questions? Contact: Marco Brambilla marco.brambilla@polimi.it marcobrambi marcobrambiBrambilla, Fraternali: Execution Semantics of BPMN through MDE Web Application Generation 12

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