• Pre-Validation - Determine whether the business logic is specific to a single action or attribute, or if the same logic could apply to multiple actions or attributes. If the logic is specific to a single UI Component (action or attribute), add the logic to a Validator. If the logic could apply to multiple UI Components, add the logic to a Filter. Finally, associate the Validator or Filter with the UI Component to ensure that the business logic is applied to that component.

◦ Pre-Validation in a Validator - Implement the performFullPreValidation() and performLimitedPreValidation() methods in a Validator to contain the desired business logic.

◦ Pre-Validation in a Filter - Implement the preValidateAction method in a Filter to contain the desired business logic.

• Post-Select Validation - Implement the validateSelectedAction() and validateSelectedMultiSelectAction() methods in a Validator to define the desired business logic, and associate the Validator with the action.

• Post-Submit Validation - Implement the validateFormSubmission() method in a Validator to define the desired business logic, and associate the Validator with the wizard step or the entire wizard.