Signed-off-by: Raphaël Barrois <raphael.barrois@polytechnique.org>
/** Extension of a PlFilterOrder, for orders where the value on which ordering
* is done could be used for grouping results (promo, country, ...)
*/
/** Extension of a PlFilterOrder, for orders where the value on which ordering
* is done could be used for grouping results (promo, country, ...)
*/
-class PlFilterGroupableOrder extends PlFilterOrder
+abstract class PlFilterGroupableOrder extends PlFilterOrder
{
/** This function will be called when trying to retrieve groups;
* the returned token will be used to group the values.
{
/** This function will be called when trying to retrieve groups;
* the returned token will be used to group the values.