Problem of PPR+Validation+Auto Submit

Use Case : If the AutoSubmit property of any input field is enabled  and validation is done on other input field in a form, many a times on partial submit of the first input field, validation error occurs in the second input field.
So to turn off the server-side validation, we have to extend 'oracle.adf.controller.v2.lifecycle.PageController' in the backing bean and override the 'validateModelUpdates()' as shown below:

1. public class MyBackingBean extends oracle.adf.controller.v2.lifecycle.PageController {
3. public void validateModelUpdates(LifecycleContext context) {
4. FacesContext fctx = FacesContext.getCurrentInstance();
5. //skip validation on partial submit
6. if(PartialPageUtils.isPartialRequest(fctx)){
8. //super.validateModelUpdates(context); //skip - no refresh
9. }else
10. {
11. super.validateModelUpdates(context);
12. }
13. }