ean

    public boolean clearEanOnCopy(final DataDefinition dataDefinition, final Entity product) {
        if (product == null) {
            return true;
        }
        product.setField(EAN, null);
        return true;
    }

    public boolean checkIfEanValueIsNumerical(final DataDefinition productDD, final Entity product) {
        String eanCode = product.getStringField(EAN);
        if (StringUtils.isNumeric(eanCode) || eanCode == null) {
            return true;
        } else {
            product.addError(productDD.getField(EAN), "basic.product.ean.onlyNumericValue");
            return false;
        }
    }