Make it easier to override sort order in scheduled search notify comm…

…and. (#4247)

module/VuFindConsole/src/VuFindConsole/Command/ScheduledSearch/NotifyCommand.php

@@ -98,6 +98,13 @@ class NotifyCommand extends Command implements TranslatorAwareInterface
      */
     protected $limit = 50;
 
+    /**
+     * Sort order to use when performing searches
+     *
+     * @var string
+     */
+    protected $sort = 'first_indexed desc';
+
     /**
      * Constructor
      *
@@ -311,7 +318,7 @@ protected function getNewRecords($searchObject, $lastTime)
         // Prepare query
         $params = $searchObject->getParams();
         $params->setLimit($this->limit);
-        $params->setSort('first_indexed desc', true);
+        $params->setSort($this->sort, true);
         $searchId = $searchObject->getSearchId();
         try {
             $records = $searchObject->getResults();