Presentation given on 24.2.2012 at the SCUBE Industry Exchange workshop at Thales, Paris

1. Jopera
Eclipse-based Visual Composition
Environment featuring a General Language
for Heterogeneous Service Composition
Cesare Pautasso
Faculty of Informatics, USI Lugano, Switzerland
c.pautasso@ieee.org
http://www.jopera.org
http://twitter.com/pautasso
24.2.2012 Associate Member

2. About Cesare Pautasso
• Assistant Professor at the Faculty of Informatics,
University of Lugano, Switzerland (since Sept 2007)
• Research Projects:
• SOSOA – Self-Organizing Service Oriented Architectures
• CLAVOS – Continuous Lifelong Analysis and Verification
of Open Services
LiSA – Liquid Software Architecture
• BPEL/BPMN for REST
• Researcher at IBM Zurich Research Lab (2007)
• Post-Doc at ETH Zürich
• Software:
JOpera: Process Support for more than Web services
http://www.jopera.org/
• Ph.D. at ETH Zürich, Switzerland (2004)
• Laurea Politecnico di Milano (2000)
• More information:
http://www.pautasso.info/ http://twitter.com/pautasso/
©2010 Cesare Pautasso - 21.5.2010 2

3. University of Lugano (USI)
 Faculty of Informatics (Opened 2004)
 17 Professors
 75 PhDs + Post-docs
 Excellence in Research
 Innovative Teaching

4. (Java-based)
Open Process Engine for
Reliable Activities
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7. Many kinds of Services
Synchronous (RPC)
Service
Services
Asynchronous
Service
Services
Streaming
Service
Services
RESTful Services R Service
Human Services Service
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8. Heterogeneous Composition
Service Composition
Service
Service
Service
R R Service
Service
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10. Service Interface
Data Flow
(input/output parameters)
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11. Composition Language
Control Flow dependencies
(finished, failed, aborted, etc)
cycles allowed, implied by data flow
arbitrary synchronization rules possible
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12. Recursion
Processes compose tasks
(which may themselves invoke or
spawn sub-processes)
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13. Extensibility
Mapping to service invocation
mechanisms and protocols
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14. Modeling Viewpoints
Control Data
Flow Flow
Adapter
Bindings
JAVA XPATH XSLT HTML HTTP …
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15. Control
Flow
Control Flow
Dependency
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16. Service
Bindings
HTTP
HTML
XSLT
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17. Data
Flow
Data Flow
(Copy)
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18. Demo
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19. Doodle Map Example
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20. Doodle Map Architecture
Web Browser Workflow RESTful
Engine Web Services
RESTful API
APIs
GET
POST
GET
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21. Control
Flow
Control Flow
Dependency
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22. Service
Bindings
HTTP
HTML
XSLT
XPATH
JAVA
…
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23. Data
Flow
Data Flow
(Copy)
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25. 37

26. Why Users Like JOpera
 High Level Workflow Language
 Data and Control Aspects (Visual Representation)
 Recursion, Iteration, Parallelism and Pipelining
 Open and Extensible Service Model
 Efficient invocation of local code snippets (Java, Javascript)
 Synchronous, Asynchronous, and Streaming interaction
 Web services support (REST, WS-*)
 Secure access to remote file systems and hosts (SSH)
 Basic human task worklist handler
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27. Why Users Like JOpera
 High Level Workflow Language
 Data and Control Aspects (Visual Representation)
 Recursion, Iteration, Parallelism and Pipelining
 Open and Extensible Component Model
 Efficient invocation of local code snippets (Java, Javascript)
 Synchronous, Asynchronous, and Streaming interaction
 Web services support (Axis, WSIF)
 Secure access to remote file systems and hosts (SSH)
 Basic human task worklist handler
 Strong Eclipse Foundation
 Platform Independent (Eclipse/Java)
 Flexible, Extensible, Modular and Embeddable
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28. A Growing User Community
Swiss Institute of Bioinformatics, Swiss National Supercomputing Center,
Purdue University, National Center for Supercomputing Applications (NCSA),
Singapore Management University, McGill University, University of Kent ,
SINTEF (Norway), IWU Fraunhofer (Germany) …
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29. Conclusion
 Modeling service composition behavior
 Flow-based composition language (Visual & XML)
 Development and Debugging tools for Eclipse
 Composition not limited to Web services
 Execution of the composition models
 Efficiency (compiled to Java bytecode)
 Distributed engine (multicore, cluster, cloud)
 Autonomic platform (self-healing, self-tuning)
 Extensibility (Eclipse plug-ins to provide custom service
publishing and invocation adapters)
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30. Download
http://www.jopera.org/latest
More Information
http://www.jopera.org/docs/publications
Cesare Pautasso, c.pautasso@ieee.org, @pautasso
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31. PhD Positions Available
Cesare Pautasso
http://www.pautasso.info/
@pautasso
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