Thursday Jun 03, 2010

Calling Web Services using ADF 11g

One of the benefits of ADF is that fact that it can use multiple data sources. With SOA playing a big part in today’s IT landscape, applications need to be able to utilise this SOA framework to leverage functionality from multiple systems to provide a composite application.

ADF provides functionality to expose web services via the ADF Business Component so if you know how to use Business Components for a database. Configuring ADF for web services is much the same.

In this example I use an OSB web service that gets a customer.

  1. Create a new Fusion Web Application (ADF) Application and click OK

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  2. Provide an Application Name, GetCustomerADF and click Next

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  3. From the Project Technologies move Web Services into the Selected box. Accept the defaults and click Finish.

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  4. Right-click the Model project and select New

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  5. In the Gallery select Web Services –> Web Service Data Control then click OK.

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  6. Provide a name GetCustomerDC and give the URL endpoint for the Web Service, then click Next

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  7. Select the web service operation you want to use for the ADF application. In my example my web service only has one operation.

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  8. Click Finish
  9. Save your work, File –> Save
  10. The data control has now been created, the next steps create the UI components.
  11. In your application created in step 1 find the ViewController project, right-click and choose New

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  12. In the Gallery select JSF –> JSF Page

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  13. Provide a name for the jsp page, GetCustomer, Also ensure that the ‘Create as XML Document (*.jsp) check box is checked. I have selected the page template, Oracle Three Column Layout but you can create a layout of your choice.

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  14. I only want 2 columns so I delete the last column but right-clicking the right had panel and selecting Delete

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  15. Drag the fields you require from the web service data control to the left pannel. In my example I only require the Customer ID. When you drag to the panel select Texts –>ADF Input Text w/Label

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  16. In this example I want to search on a customer based on the ID. So Once I select the ID I want to execute the request. To do this I need a button.
    Drag the operation object under the fields created in step 15. Select Methods –> ADF Button.

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  17. You now need to provide the mappings, Choose the ‘Show EI Expression Builder’

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  18. Navigate to the bindings, ADFBindings –> bindings –> parametersIterator –> currentRow

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  19. Click OK
  20. Drag and drop the return information

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  21. I just want the results shown in a form. I want to show all fields

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  22. Now it is time to test, Right-click the jspx page created in steps 11 – 21 and select Run

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  23. A browser should start, enter valid values and test

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Discussions and Examples using Oracle Fusion Middleware. Some image links are broken when using Firefox, Safari, and Chrome. If you want to see the full image please use IE.

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