JSF customize validation

Configuration

<h:inputSecret value="#{user.password}" required="true"> 
   <f:validator validatorId="example.jsf.PasswordValidator"/>
   <f:attribute name="pattern" value=".+[0-9]+"/>
</h:inputSecret>

Code

public void validate(FacesContext context, 
                        UIComponent component, 
                        Object obj)
           throws ValidatorException {
    ....
    String pattern = (String)
                 component.getAttributes().get("pattern");
    ....
}

This sample works. But the attribute is added to UIComponent inputSecret. But logically, the attribute should belong to "validator". There may be better solution like using f:param.