custom validator ADF

http://jjzheng.blogspot.com/2010/10/create-custom-validators-in-adf.html

http://lucbors.blogspot.com/2011/10/adf-11g-quicky-3-adding-error-info-and.html

bind the component to bean; on Submit click, if there is any message/error to be shown; trigger the warning/error to the component