Dan Poltawski
140 lines
4.8 KiB
PHP
140 lines
4.8 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package core_question
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* @copyright 2013 The Open University
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* @author James Pratt me@jamiep.org
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace core_question\statistics\responses;
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/**
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* Represents an actual part of the response that has been classified in a class of responses for this sub part of the question.
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*
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* A question and it's response is represented as having one or more sub parts where the response to each sub-part might fall
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* into one of one or more classes.
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*
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* No response is one possible class of response to a question.
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*
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* @copyright 2010 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class analysis_for_class {
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/**
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* @var string
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*/
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protected $responseclassid;
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/**
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* @var string
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*/
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protected $modelresponse;
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/** @var string the (partial) credit awarded for this responses. */
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protected $fraction;
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/**
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*
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* @var analysis_for_actual_response[] key is the actual response represented as a string as it will be displayed in report.
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*/
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protected $actualresponses = array();
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/**
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* Constructor, just an easy way to set the fields.
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* @param \question_possible_response $possibleresponse
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* @param string $responseclassid
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*/
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public function __construct($possibleresponse, $responseclassid) {
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$this->modelresponse = $possibleresponse->responseclass;
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$this->fraction = $possibleresponse->fraction;
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$this->responseclassid = $responseclassid;
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}
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/**
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* @param string $actualresponse
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* @param float|null $fraction
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*/
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public function count_response($actualresponse, $fraction) {
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if (!isset($this->actualresponses[$actualresponse])) {
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if ($fraction === null) {
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$fraction = $this->fraction;
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}
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$this->actualresponses[$actualresponse] = new analysis_for_actual_response($actualresponse, $fraction);
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}
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$this->actualresponses[$actualresponse]->increment_count();
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}
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/**
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* @param \qubaid_condition $qubaids
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* @param int $questionid the question id
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* @param string $subpartid
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*/
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public function cache($qubaids, $questionid, $subpartid) {
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foreach ($this->actualresponses as $response => $actualresponse) {
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$actualresponse->cache($qubaids, $questionid, $subpartid, $this->responseclassid, $response);
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}
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}
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public function add_response_and_count($response, $fraction, $count) {
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$this->actualresponses[$response] = new analysis_for_actual_response($response, $fraction, $count);
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}
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/**
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* @return bool whether this analysis has a response class with more than one
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* different actual response, or if the actual response is different from
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* the model response.
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*/
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public function has_actual_responses() {
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if (count($this->actualresponses) > 1) {
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return true;
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} else if (count($this->actualresponses) == 1) {
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$onlyactualresponse = reset($this->actualresponses);
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return !$onlyactualresponse->response_matches($this->modelresponse);
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}
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return false;
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}
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/**
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* @return object[]
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*/
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public function data_for_question_response_table($responseclasscolumn, $partid) {
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$return = array();
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if (empty($this->actualresponses)) {
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$rowdata = new \stdClass();
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$rowdata->part = $partid;
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$rowdata->responseclass = $this->modelresponse;
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if (!$responseclasscolumn) {
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$rowdata->response = $this->modelresponse;
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} else {
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$rowdata->response = '';
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}
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$rowdata->fraction = $this->fraction;
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$rowdata->count = 0;
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$return[] = $rowdata;
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} else {
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foreach ($this->actualresponses as $actualresponse) {
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$return[] = $actualresponse->data_for_question_response_table($partid, $this->modelresponse);
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}
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}
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return $return;
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}
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}
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