How to validate a

[Henry Chang]

Hi, I've got a simple question regarding to validating <tr:table> component. I 
just want to make sure that at least one of the rows in the table are being 
selected before proceeding to the next page, after pressing the submit button. 
I have validation code like this:

private CoreTable product;

public void validateToCart(FacesContext context, UIComponent toValidate,
            Object value) throws ValidatorException {
        Iterator selection = product.getSelectedRowKeys().iterator();
        if (!selection.hasNext()) {
            FacesMessage message = new FacesMessage("No items selected!");
            throw new ValidatorException(message);
        }
    }


How do I call this method from the page? I found that there is no validator 
attribute in the <tr:table> component nor in the <tr:commandButton> component. 
Thanks.

Best Regards,
Henry Chang