| 1 | <?php
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| 2 |
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| 3 | /**
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| 4 | * AnswerSet is a collection of answers corresponding to a Session
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| 5 | *
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| 6 | */
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| 7 | class AnswerSet extends ResearchToolObject{
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| 8 | public $survey;
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| 9 | public $respondent;
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| 10 | public $answers;
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| 11 |
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| 12 | /**
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| 13 | * Constructor for an AnswerSet object
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| 14 | * @param type $uid
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| 15 | * @param type $survey
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| 16 | * @param type $respondent
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| 17 | * @param type $answers
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| 18 | */
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| 19 | public function __construct($uid=null, $survey=null, $respondent=null, $answers=null)
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| 20 | {
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| 21 | if(!isset($uid))
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| 22 | {
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| 23 | $uid = md5(uniqid(rand(), true));
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| 24 | }
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| 25 | $this->uid = $uid;
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| 26 | $this->survey = $survey;
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| 27 | $this->respondent = $respondent;
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| 28 | $this->answers = $answers;
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| 29 | }
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| 30 |
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| 31 | /**
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| 32 | * function evaluate()
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| 33 | * evaluates the references of survey, respondent and answers.
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| 34 | */
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| 35 | public function evaluate()
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| 36 | {
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| 37 | $dbi = new DatabaseInterface();
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| 38 | if(is_string($this->survey))
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| 39 | {
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| 40 | $result = $dbi->get("survey", array("uid" => $this->survey));
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| 41 | if(!isset($result[0]))
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| 42 | return false;
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| 43 | $this->survey = $result[0];
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| 44 | }
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| 45 | if(is_string($this->respondent))
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| 46 | {
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| 47 | $result = $dbi->get("respondent", array("uid" => $this->respondent));
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| 48 | if(!isset($result[0]))
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| 49 | return false;
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| 50 | $this->respondent = $result[0];
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| 51 | }
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| 52 | if(!empty($this->answers) && is_string($this->answers[0]))
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| 53 | {
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| 54 | $newanswers = array();
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| 55 | foreach($this->answers as $answer)
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| 56 | {
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| 57 | $result = $dbi->get("answer", array("uid" => $answer));
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| 58 | if(!isset($result[0]))
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| 59 | return false;
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| 60 | $newanswers[] = $result[0];
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| 61 | }
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| 62 | $this->answers = $newanswers;
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| 63 | }
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| 64 | return true;
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| 65 | }
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| 66 | }
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| 67 |
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