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		$this->pager = new sfDoctrinePager('OrderItem', 20);		$this->addSortCriteria($this->pager->getQuery());		$this->addFiltersCriteria(		$this->pager		->getQuery()						->from('OrderItem')						->leftJoin('Member')						->leftJoin('SubProgram')						->leftJoin('P2MReseller')						->where('reseller  = ?', 2)		);