Yesterday, I shared a quick tip on how to apply a ViewCriteria in your ADF Controller project. ( www.cedricleruth.com/how-to-apply-a-viewcriteria-programmatically-in-adf/ )

And if you’re using this snippet, you may also need to remove this ViewCriteria from the ViewObject programmatically.

A typical use case is a toggle button on top of an ADF table to only display specific data on demand.

Here is how to do so :

You often need to filter and modify the where clause of your view object programmatically in your controller bean depending on a user action. (for example, a click on a button will show a different set of data in the same table)

To do so you can either add the where clause programmatically in the controller or apply specified view criteria.
As a best practice and to allow a better maintainability I would always recommend applying a view criteria as any action on the data should be done in the model. (And it will be easier for you to update it if needed)