<?php
  
  $currentVersion=OC_Appconfig::getValue('search_lucene', 'installed_version');
  
  if (version_compare($currentVersion, '0.5.0', '<')) {
  	//force reindexing of files
  	$stmt = OCP\DB::prepare('DELETE FROM `*PREFIX*lucene_status` WHERE 1=1');
  	$stmt->execute();
  	//clear old background jobs
  	$stmt = OCP\DB::prepare('DELETE FROM `*PREFIX*queuedtasks` WHERE `app`=?');
  	$stmt->execute(array('search_lucene'));
  }