public function copyPoll($tid, $newTid)
 {
     list($poll, $pollOption, $pollVoter) = $this->initInfo($tid);
     if (!$poll) {
         return;
     }
     Wind::import('SRV:poll.dm.PwPollDm');
     $pollDm = new PwPollDm();
     /* @var $pollDm PwPollDm */
     $pollDm->setVoterNum($poll['voter_num']);
     $pollDm->setIsViewResult($poll['isafter_view']);
     $pollDm->setIsIncludeImg($poll['isinclude_img']);
     $pollDm->setOptionLimit($poll['option_limit']);
     $pollDm->setRegtimeLimit($poll['regtime_limit']);
     $pollDm->setCreatedUserid($poll['created_userid']);
     $pollDm->setAppType($poll['app_type']);
     $pollDm->setExpiredTime($poll['expired_time']);
     $newPollid = $this->_getPollDS()->addPoll($pollDm);
     $optionVoter = array();
     foreach ($pollVoter as $value) {
         $optionVoter[$value['option_id']][] = $value['uid'];
     }
     Wind::import('SRV:poll.dm.PwPollOptionDm');
     foreach ($pollOption as $key => $value) {
         $pollOptionDm = new PwPollOptionDm();
         $pollOptionDm->setPollid($newPollid);
         $pollOptionDm->setVotedNum($value['voted_num']);
         $pollOptionDm->setContent($value['content']);
         $pollOptionDm->setImage($value['image']);
         $newOptionid = $this->_getPollOptionDs()->add($pollOptionDm);
         if (isset($optionVoter[$key]) && is_array($optionVoter[$key])) {
             $this->copyVoter($optionVoter[$key], $newPollid, $newOptionid);
         }
     }
     Wind::import('SRV:poll.dm.PwThreadPollDm');
     $threadPollDm = new PwThreadPollDm();
     $threadPollDm->setTid($newTid);
     $threadPollDm->setPollid($newPollid);
     $threadPollDm->setCreatedUserid($poll['created_userid']);
     $this->_getThreadPollDs()->addPoll($threadPollDm);
     return true;
 }