ImportProcess::stageDeleteAll

protected function stageDeleteAll()
{
	switch($this->step)
	{
		case 0:
			$this->dbConnection->query('truncate table '.LocationLocationTable::getTableName());
			break;
		case 1:
			$this->dbConnection->query('truncate table '.LocationNameLocationTable::getTableName());
			break;
		case 2:
			$this->dbConnection->query('truncate table '.LocationExternalTable::getTableName());
			break;
		case 3:
			LocationGroupLocationTable::deleteAll();
			break;
		case 4:
			LocationSiteLocationTable::deleteAll();
			break;
	}

	$this->nextStep();

	if($this->step >= 4)
		$this->nextStage();
}