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Create rest service in osb 12c over database table
- 1. Create REST Service in OSB 12c over BD
- 2. Starting by creating Database adapter to the table you need
- 3. Please provide a meaningful name
- 4. Choose the DB connection from the application server you are deploying to
- 5. Choose the DB connection from the application server you are deploying to
- 6. The recommended way to run SQL’s
- 7. Choose the DB schema and run query to get the tables, views and synonyms list
- 8. The import will bring the table to the work area
- 9. Next for now
- 10. Choose the fileds to retrieve In this case, there is a screen that is skipped because the table has clear primary key. In other cases, such as views, you will have a selection of the key fields. It is important to select the fields that reflects the unique key of the data you retrieve
- 11. Add the parameter. In this case the CustomerId
- 12. Add the parameter. In this case the CustomerId
- 13. Add to use the parameter
- 14. OK, Next, Next, Finish
- 15. Time to deploy and test the DB adapter
- 16. Copy and save for later
- 17. Create the service response schema
- 18. Please provide a meaningful name
- 19. In my case, the response schema is generated from a JSON. This is good if you already have an existing service. You can always create it manually.
- 20. The copied JSON and Next
- 21. The schema and Next
- 22. Create a service proxy to be exposed
- 23. Please provide a meaningful name This is to use the schema you just created
- 24. Edit the path to call the service Add an operation
- 25. Give a nice name to the operation Add the parameter according to the DB parameter from the DB adapter
- 26. The parameter definition The Expression can be used to get or manipukate the parameter in the process
- 27. Finished with the Request and go to Response
- 28. Choose the response schema If you haven’t created the schema before you can do it now in the same way The schema you created
- 30. Service Proxy is done but not complete without a connection to something
- 31. Start with the Pipeline. This is center piece to complete the development
- 32. Select the WSDL of the Service Proxy. The WSDL was generated during the creation of the proxy. Why WSDL and not WADL? This is because OSB “nature” is SOAP and this service is not pure REST. The Service Proxy is exposing REST while the DB adapter is exposed internally as SOAP
- 34. Create the XSL to map the DB result with the REST/JSON response
- 35. The DB adapter Response is the Source of the map
- 36. The Service Proxy Response is the Target of the map
- 37. Review the Source schema Review the Target schema
- 38. The xsl:for-each covers the multiple records in the response. Please learn Xpath, Xquery and XSLConnecting the fields by dragging
- 40. Create the Variables that you will use very soon Create this by drag&drop from Nodes icons on the right
- 41. Create this by drag&drop from Communication icons on the right Choose the DB adaptor service you created Choose the DB adaptor service you created
- 42. Choose the DB adaptor service you created Use the variables for Input and Output payload Using Variables provides flexibility to manipulate the service calls as you will see soon enough
- 43. Remember the XML from the DB Adaptor test? This is where you use it. The CustomerId parameter is provided with Xpath that extract it from the Body. The Assign activity insert a value to a variable. In our case, it creates the Request for the DB Adaptor service The Assign activity insert a value to a variable. In our case, it creates the Request for the DB Adaptor service
- 44. The Replace takes the response from the DB and converts it to the output of the service by using the XSL you created 1. Choose XSLT Resource from the list 2. Select the XSL you created 3. The variable that will accept the result The part of the Response where everythiong is done The scope of the Replace effect
- 46. Thank you!