Create Mediator Service from an Existing WSDL

In my previous example, I have discussed about the simple example of mediator(Hello World Example) where mediator was exposed as a service.

Now I am going to explain another example of mediator, where mediator service will be created from an existing WSDL and then will be exposed.

1. Create a new SOA project. Right click on application -> New Gallery -> Projects -> SOA Project.
2. Click on OK and enter project name.
3. Click on Next and select a�?Empty Compositea��.
4. Click on FINISH and empty composite will be created. Select a�?Mediatora�� from SOA Components palate and drag and drop it into the middle swim lane a�?Componentsa�� section of the composite. It will open the a�?Create Mediatora�� window. Enter a proper Mediator name and select template type as a�?Define Interface Latera��.
5. Drag a SOAP service from SOA Technology palate and drop it into a�?Exposed Servicesa�� section. Enter name ‘SOAPAsService’ and select type as ‘Service’.
6. Click on a�?Generate WSDL from schemaa�� cog icon.
7. Below window will appear. Enter File Name and select interface type as a�?Synchronous Interfacea��.
8. Now create input and output message. Click on green plus iconA�in a�?Input Parta��. Enter part name and select schema element as a�?singleStringa��.
9. Create output message same like input message.Click on OK.
10. WSDL is created for exposed SOAP service.
11. Now again drag a SOAP service in a�?External Referencesa�� section.
12. Enter service name and WSDL URL and then select port type and callback port type as per below screenshot.
13. Click on OK and uncheck the a�?Maintain original directory structurea�� checkbox.
14. The composite will look like the below screenshot.
15. Double click on Mediator and .mplan file will open.
16. Click on mapping icon in request part.
17. Click on green plus icon and create a new request mapper file. Enter the file name and Click on OK.
18. Now map the input parameter from source to target parameter.
19. Create same mapping for reply also.
20. Map the output parameter to the output of the external reference service.
21. Now deploy the project. Refer my previous article on HelloWorld Mediator for deployment process.
22. The project can be tested in JDeveloper itself. In your application server tab, you can find your project after deploying the project into server.
23. Right click on project and select a�?Test Web Servicea��
24. Below window will appear. Give input part and click on a�?Send requesta�� and it will show the output.
25. This project can be tested from Enterprise Manager Console also. Follow the steps as mentioned in my previous article to test the project from EM Console.

I hope this article helps in understanding on how to create mediator service from an existing WSDL. Your comment will help me to improvise the content. Thank you.