Oracle SOA Mediator Sample Example

Oracle SOA Mediator

Mediator is one of the service component of the Oracle SOA Suite, there are four main functionality of Mediator

Routing : Mediator route incoming payload to the external service based on routing rule

Validate: Mediator performs XSD schema validation , it describes the structure of xml payload

Filter: Mediator defines a filter expression that specifies the service to be invoked if the payload satisfy filter condition

Transform: Mediator performs XSLT transformation , it transforms data suitable for the target                                                                                                                                                                                                                                                                    In this Demo we will be creating a composite application that routs the incoming payload to the BPEL process based on filter expression

Step 1: Click File –> new –> project –> SOA Project 

Click OK                                                                                                                                                                     Step 2: Enter the project name and click next

 Click Finish                                                                                                                                                                  Step 3: Create a Schema for input and output 

Step 4: Expose a SOAP service, drag a Soap from component panel and drop it in exposed service 

Name it as ProductDeliver, in WSDL URL click on Generate WSDL from schema as shown above 

In Interface Type choose Synchronous Interface  and click on + sign at input and name it as Request  , browse for input schema element

Choose the input element and click OK,Do the same for output click on + sign at output and name it as Response, browse for output schema element and click OK.

 Now u have exposed a SOAP Service                                                                                                                    Step 5: Drag a mediator component from component panel and drop it in Components 

 and click OK  

Now connect SOAP service with mediator
Step 6:Drag a BPEL process from component panel and drop it in components, name it as DLF and in Template choose Synchronous BPEL Process

In input click browse and select input schema element, Click OK

 In output click browse and select output schema element, Click OK

And uncheck Expose as a SOAP Service and click OK Now that u have create a BPEL Process (DLF), Follow same steps to create two more BPEL name it as Emirates and FedEx

Now connect this three BPEL to the mediator

Double click on mediator, u will find three section pointing to DLF, Emirates and FedEx BPEL

In DLF section click on filter to specifies routing rule

In routing rule we are going to compare payload element i.e. deliveryLocation  with India,if  true it will route to DLF BPEL

Click OK

Now assign payload to the input of DLF BPEL by click Assign value in mediator

After mapping payload with input of DLF BPEL

Click OK

Now that u have mapped input to DLF BPEL, u should get the out from DLF BPEL and mapped it to SOAP response

In Synchronous reply click on Assign value

Map the out of DLF BPEL to the SOAP response, Click OK

Now that u have done with DLF BPEL, do the same for Emirates and FedEx

BPEL and assign value for request and response

If deliveryLocation  is Dubai,it will route to Emirates BPEL else if deliveryLocation  is USA,it will route to FedEX BPEL

Step 7: Click on DLF BPEL , drag  assign from components panel and place it in BPEL

Double click on assign and concat product name with courier name as shown below

Do the same for Emirates and FedEx BPEL

Save all the changes and deploy the application

Step 8: Test the Application

1)

Request

Response

2)

Request

Response

3)

Request

Response