Interfaces in WebSphere Integration Developer

Interfaces in WID are used for exchanging data between different components. An interface has an input and output of a component. Interfaces are created independent of implementation. We can define an interface and implementation can be done later. An interface will have one more operations. The operations can be Request Response Operation or One Way operation. A request response operation will have an input and output. A one way operation will have only an input and no output.

To create an interface switch to Business Integration perspective, expand your module, and right click on Interfaces. Select New -> Interface from the context menu appears.

Enter the folder where you want to store the interface and enter a name of your interface and click on Finish. The interface will be opened in interface editor. Now we can create our operations using the interface editor. The interface editor has different buttons for adding a request response operation, one way operation, delete the operation etc. After adding an operation if we click on an operation, the buttons for adding input, output and fault will get active.

We can compare the interfaces in WebSphere Integration Developer with Java interfaces. The operations are methods in normal java interface. A two way operation is a method that has a return value and one way operation is a method that returns a void type. The inputs are the parameters of a method and the outputs are the return type of a method.

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