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Composing REST Services

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Cesare Pautasso

Dagstuhl Seminar on Software Service Engineering

Technologie
1  sur  25
Composing REST Services Open Dagstuhl Session Cesare Pautasso Faculty of Informatics University of Lugano (USI), Switzerland http:// www.pautasso.info
[object Object],[object Object],Web Service Composition Today “ ” WSDL 1.1 WS-BPEL 2.0
RESTful Web Services APIs… WSDL 1.1 … do not use WSDL 1.1
[object Object],[object Object],[object Object],The Goal ,[object Object],One Solution: BPEL for REST
[object Object],[object Object],[object Object],The Goal ,[object Object],[object Object],Another Solution: JOpera
[object Object],[object Object],[object Object],[object Object],REST in one slide R PUT DELETE GET POST
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Challenges for Composition Languages
JOpera Example: Doodle Map Mashup ,[object Object]
Doodle Map Mashup Architecture Web Browser Workflow Engine RESTful Web Services APIs GET POST GET RESTful API
 
BPM Workflow Languages RESTful Web Service Composition
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Solution Space BPM Workflow Languages RESTful Web Service Composition BPM Workflow Languages RESTful Web Service Composition BPM Workflow Languages RESTful Web Service Composition
[object Object],1. Abstract Workflow Example: BPEL/WSDL (WS-BPEL 2.0 does not support WSDL 2.0) R PUT R GET R POST R DELETE
[object Object],2. Concrete Workflow: BPEL for REST <Put R> <Get R> <Post R> <Delete R>
BPEL for REST – New Activities/Handlers Web Service <invoke> Web Service <invoke> <receive> <reply> <receive> <put> <get> <post> <delete> <onPut> <onGet> <onPost> <onDelete> R esource PUT DELETE GET POST
[object Object],BPEL for REST – Resource Block BPEL for REST < Resource P > <onGet> < Put R > < Get S > </onGet> < Post R > < Delete S > </onDelete> </Resource> <onDelete> R PUT DELETE GET POST S PUT DELETE GET POST P PUT DELETE GET POST
3. RESTful Workflows P Use the resource interface abstraction to publish the state of the workflow
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Workflows as Resources – URI
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reading the state of the workflow resources
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Creating new workflow resources
[object Object],[object Object],[object Object],[object Object],Updating the workflow resource
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Deleting workflow resources
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Discussion
[object Object],[object Object],[object Object],[object Object],Conclusion
[object Object],[object Object],[object Object],[object Object],Some References http://www.jopera.org/

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Composing REST Services

  • 1. Composing REST Services Open Dagstuhl Session Cesare Pautasso Faculty of Informatics University of Lugano (USI), Switzerland http:// www.pautasso.info
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  • 3. RESTful Web Services APIs… WSDL 1.1 … do not use WSDL 1.1
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  • 9. Doodle Map Mashup Architecture Web Browser Workflow Engine RESTful Web Services APIs GET POST GET RESTful API
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  • 11. BPM Workflow Languages RESTful Web Service Composition
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  • 15. BPEL for REST – New Activities/Handlers Web Service <invoke> Web Service <invoke> <receive> <reply> <receive> <put> <get> <post> <delete> <onPut> <onGet> <onPost> <onDelete> R esource PUT DELETE GET POST
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  • 17. 3. RESTful Workflows P Use the resource interface abstraction to publish the state of the workflow
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