Oracle Fusion Middleware

In this post I will explain, how in a simple way you can use managed bean to perform a binding operation.
In case of using ADF for managing Human Task flows (BPM process), you sometimes want to perform post/pre actions to the native operation.
For example: you want the user to press the approve action, and in the background you want to call a Web service for some validations.
Here is how you do it:

1. Create a bean method by double click the action button, or manually create a class with the required method:to copy:

    
   public String approveAction() {
   BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
   OperationBinding validateNameOP = bindings.getOperationBinding("validateName");
   Object resultCommit = validateNameOP.execute();
   if (!validateNameOP.getErrors().isEmpty()) {
   return null;
   }
   
   AttributeBinding status =(AttributeBinding)bindings.get("status");
   if (status.getInputValue().toString().equalsIgnoreCase("Y")){
   OperationBinding operationBinding = bindings.getOperationBinding("APPROVE");
   Object result = operationBinding.execute();
   if (!operationBinding.getErrors().isEmpty()) {
   System.out.println("inside error");
   return null;
   }
   }else{
   return null;
   }
   return "refreshTaskFlow";
   

2. Declare the bean in the action listener property of the command button:

That’s it.

Just be sure, that both APPROVE & validateName operations are declared in the binding. Or else you will get nullPointerException.

Good Luck