Interface Validator<T>

    • Method Detail

      • validate

        void validate​(FacesContext context,
                      UIComponent component,
                      T value)
               throws ValidatorException

        Perform the correctness checks implemented by this Validator against the specified UIComponent. If any violations are found, a ValidatorException will be thrown containing the FacesMessage describing the failure.

        For a validator to be fully compliant with Version 2 and later of the specification, it must not fail validation on null or empty values unless it is specifically intended to address null or empty values. An application-wide <context-param> is provided to allow validators designed for Jakarta Faces 1.2 to work with Jakarta Faces 2 and later. The jakarta.faces.VALIDATE_EMPTY_FIELDS <context-param> must be set to false to enable this backwards compatibility behavior.

        context - FacesContext for the request we are processing
        component - UIComponent we are checking for correctness
        value - the value to validate
        ValidatorException - if validation fails
        NullPointerException - if context or component is null