code: @Override
  	public List<CommerceDiscountRel> findByCD_CN(long commerceDiscountId,
  		long classNameId) {
  		return findByCD_CN(commerceDiscountId, classNameId, QueryUtil.ALL_POS,
  			QueryUtil.ALL_POS, null);
  	}
docs: Returns all the commerce discount rels where commerceDiscountId = &#63; and classNameId = &#63;.
  
  @param commerceDiscountId the commerce discount ID
  @param classNameId the class name ID
  @return the matching commerce discount rels