HelloWorld Example using Mediator in SOA Suite 12c

Mediator is a light weight intra composite component in SOA Suite 12C. It helps in routing messages to different SOA Components. XSLT/ XQuery mapping is used in mediator between source and target value. Mediator basically performs the below tasks:

1. Routing of Messages from service requesterA�to a service provider based on SOAP message.
2. Filter the message flow based on routing rules.
3. Transform the incoming message format according to the expectation of the service provider through XSLT/ XQuery Transformation.

Here I am going to give a simple example of Mediator. In this example, the output will be displayed the input value concatenating with Hello.

1. Go to File >A�New >A�Application
2. Select SOA Application option under in General > Applications
3. Enter application name a�?XXTestAppa�� and select directory
4. Click on Next and enter project name a�?HelloWorldMedPrja��
5. Select Composite with Mediator and give a proper composite name
6. Click on Finish
7. Create Mediator window will open and select template as a�?Synchronous Interfacea��.
8. Let the input and output as default value and selectA�the checkboxA�a�?Exposed as a SOAP Servicea��.
9. Click on OK. The composite will look like the below screenshot.
10. Double click on HelloWorldMediator in a�?Componentsa�� section and .mplan file will open.
11. Click on the green plus icon A�in the routing rule section,A�select a�?Target Typea�� as a�?Echo Replya��. Target type is response type to the service requestor.
12. Now the mapping (i.e XSLT mapping) has to be done between the request input and response output.
13. Click on the Transformation MapA�icon
14. Click on green plus iconA�to create XSLT Mapping.
15. Enter aA�name to the Mapper FileA�and click on OK.
16. .xsl file will be created.
17. .xsl file will look like this.
18. Drag and DropA�a�?concata�� function under String Functions and drag and drop a a�?concata�� function from component palate in the dotted area.
19. Double click on concat function to open the function and select proper parameters.
20. Click on OK and transformation will lookA�like this.
21. Now deploy the project. Right click on project, select a�?Deploya�� and then project name.
22. Select a�?Deploy to Application Servera��
23. Click on NEXT and give version id of the project. Select the checkbox ‘Overwrite any existing composites with the same revision ID’
24. If you have configured any standalone application server then you can select that server, but here I have Intergrated WeblogicServer configured, so as selected.
25. Click on NEXT and select partition here.
26. Click on NEXT and then FINISH.
27. Open Enterprise Manager Console for testing the project. (http://localhost:7101/em)
28. Go to SOA -> soa-infra (default server) -> select HelloworldMedprj
29. Click on TEST
30. Enter any value as input (request).
31. Now check the output (response).

So, Mediator takes the input messageA�through XML based SOAP message and echoes the output.