ILIAS  release_5-3 Revision v5.3.23-19-g915713cf615
Public Member Functions
assMultipleChoiceExport Class Reference
Modules/TestQuestionPool

Class for multiple choice question exports. More...

+ Inheritance diagram for assMultipleChoiceExport:
+ Collaboration diagram for assMultipleChoiceExport:

Public Member Functions

 toXML ($a_include_header=true, $a_include_binary=true, $a_shuffle=false, $test_output=false, $force_image_references=false)
 Returns a QTI xml representation of the question. More...
 
- Public Member Functions inherited from assQuestionExport
 __construct ($a_object)
 assQuestionExport constructor More...
 
 exportFeedbackOnly ($a_xml_writer)
 
 toXML ($a_include_header=true, $a_include_binary=true, $a_shuffle=false, $test_output=false, $force_image_references=false)
 Returns a QTI xml representation of the question. More...
 

Additional Inherited Members

- Data Fields inherited from assQuestionExport
 $object
 
- Protected Member Functions inherited from assQuestionExport
 addAnswerSpecificFeedback (ilXmlWriter $a_xml_writer, $answers)
 
 addGenericFeedback (ilXmlWriter $a_xml_writer)
 
 addQtiMetaDataField (ilXmlWriter $a_xml_writer, $fieldLabel, $fieldValue)
 adds a qti meta data field with given name and value to the passed xml writer (xml writer must be in context of opened "qtimetadata" tag) More...
 
 addAdditionalContentEditingModeInformation (ilXmlWriter $a_xml_writer)
 adds a qti meta data field for ilias specific information of "additional content editing mode" (xml writer must be in context of opened "qtimetadata" tag) More...
 
 addGeneralMetadata (ilXmlWriter $xmlwriter)
 

Detailed Description

Class for multiple choice question exports.

assMultipleChoiceExport is a class for multiple choice question exports

Author
Helmut Schottmüller helmu.nosp@m.t.sc.nosp@m.hottm.nosp@m.uell.nosp@m.er@ma.nosp@m.c.co.nosp@m.m
Version
$Id$

Definition at line 15 of file class.assMultipleChoiceExport.php.

Member Function Documentation

◆ toXML()

assMultipleChoiceExport::toXML (   $a_include_header = true,
  $a_include_binary = true,
  $a_shuffle = false,
  $test_output = false,
  $force_image_references = false 
)

Returns a QTI xml representation of the question.

Returns a QTI xml representation of the question and sets the internal domxml variable with the DOM XML representation of the QTI xml representation

Returns
string The QTI xml representation of the question @access public

Reimplemented from assQuestionExport.

Definition at line 26 of file class.assMultipleChoiceExport.php.

27 {
28 global $ilias;
29
30 include_once("./Services/Xml/classes/class.ilXmlWriter.php");
31 $a_xml_writer = new ilXmlWriter;
32 // set xml header
33 $a_xml_writer->xmlHeader();
34 $a_xml_writer->xmlStartTag("questestinterop");
35 $attrs = array(
36 "ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(),
37 "title" => $this->object->getTitle(),
38 "maxattempts" => $this->object->getNrOfTries()
39 );
40 $a_xml_writer->xmlStartTag("item", $attrs);
41 // add question description
42 $a_xml_writer->xmlElement("qticomment", null, $this->object->getComment());
43 // add estimated working time
44 $workingtime = $this->object->getEstimatedWorkingTime();
45 $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
46 $a_xml_writer->xmlElement("duration", null, $duration);
47 // add ILIAS specific metadata
48 $a_xml_writer->xmlStartTag("itemmetadata");
49 $a_xml_writer->xmlStartTag("qtimetadata");
50 $a_xml_writer->xmlStartTag("qtimetadatafield");
51 $a_xml_writer->xmlElement("fieldlabel", null, "ILIAS_VERSION");
52 $a_xml_writer->xmlElement("fieldentry", null, $ilias->getSetting("ilias_version"));
53 $a_xml_writer->xmlEndTag("qtimetadatafield");
54 $a_xml_writer->xmlStartTag("qtimetadatafield");
55 $a_xml_writer->xmlElement("fieldlabel", null, "QUESTIONTYPE");
56 $a_xml_writer->xmlElement("fieldentry", null, MULTIPLE_CHOICE_QUESTION_IDENTIFIER);
57 $a_xml_writer->xmlEndTag("qtimetadatafield");
58 $a_xml_writer->xmlStartTag("qtimetadatafield");
59 $a_xml_writer->xmlElement("fieldlabel", null, "AUTHOR");
60 $a_xml_writer->xmlElement("fieldentry", null, $this->object->getAuthor());
61 $a_xml_writer->xmlEndTag("qtimetadatafield");
62
63 // additional content editing information
64 $this->addAdditionalContentEditingModeInformation($a_xml_writer);
65 $this->addGeneralMetadata($a_xml_writer);
66
67 $a_xml_writer->xmlStartTag("qtimetadatafield");
68 $a_xml_writer->xmlElement("fieldlabel", null, "thumb_size");
69 $a_xml_writer->xmlElement("fieldentry", null, $this->object->getThumbSize());
70 $a_xml_writer->xmlEndTag("qtimetadatafield");
71
72 $a_xml_writer->xmlStartTag("qtimetadatafield");
73 $a_xml_writer->xmlElement("fieldlabel", null, "feedback_setting");
74 $a_xml_writer->xmlElement("fieldentry", null, $this->object->getSpecificFeedbackSetting());
75 $a_xml_writer->xmlEndTag("qtimetadatafield");
76
77 $this->addQtiMetaDataField($a_xml_writer, 'singleline', $this->object->isSingleline ? 1 : 0);
78
79 $a_xml_writer->xmlEndTag("qtimetadata");
80 $a_xml_writer->xmlEndTag("itemmetadata");
81
82 // PART I: qti presentation
83 $attrs = array(
84 "label" => $this->object->getTitle()
85 );
86 $a_xml_writer->xmlStartTag("presentation", $attrs);
87 // add flow to presentation
88 $a_xml_writer->xmlStartTag("flow");
89 // add material with question text to presentation
90 $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
91 // add answers to presentation
92 $attrs = array();
93 $attrs = array(
94 "ident" => "MCMR",
95 "rcardinality" => "Multiple"
96 );
97 $a_xml_writer->xmlStartTag("response_lid", $attrs);
98 $solution = $this->object->getSuggestedSolution(0);
99 if (count($solution)) {
100 if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $solution["internal_link"], $matches)) {
101 $a_xml_writer->xmlStartTag("material");
102 $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
103 if (strcmp($matches[1], "") != 0) {
104 $intlink = $solution["internal_link"];
105 }
106 $attrs = array(
107 "label" => "suggested_solution"
108 );
109 $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
110 $a_xml_writer->xmlEndTag("material");
111 }
112 }
113 // shuffle output and max choice
114 $attrs = array('shuffle' => $this->object->getShuffle() ? 'Yes' : 'No');
115 if ($this->object->getSelectionLimit()) {
116 $attrs['minnumber'] = '0';
117 $attrs['maxnumber'] = (string) $this->object->getSelectionLimit();
118 }
119 $a_xml_writer->xmlStartTag("render_choice", $attrs);
120 $answers =&$this->object->getAnswers();
121 $akeys = array_keys($answers);
122 if ($this->object->getShuffle() && $a_shuffle) {
123 $akeys = $this->object->pcArrayShuffle($akeys);
124 }
125 // add answers
126 foreach ($akeys as $index) {
127 $answer = $answers[$index];
128 $attrs = array(
129 "ident" => $index
130 );
131 $a_xml_writer->xmlStartTag("response_label", $attrs);
132
133 if (strlen($answer->getImage())) {
134 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext(), false, false);
135 $imagetype = "image/jpeg";
136 if (preg_match("/.*\.(png|gif)$/", $answer->getImage(), $matches)) {
137 $imagetype = "image/" . $matches[1];
138 }
139 if ($force_image_references) {
140 $attrs = array(
141 "imagtype" => $imagetype,
142 "label" => $answer->getImage(),
143 "uri" => $this->object->getImagePathWeb() . $answer->getImage()
144 );
145 $a_xml_writer->xmlElement("matimage", $attrs);
146 } else {
147 $imagepath = $this->object->getImagePath() . $answer->getImage();
148 $fh = @fopen($imagepath, "rb");
149 if ($fh != false) {
150 $imagefile = fread($fh, filesize($imagepath));
151 fclose($fh);
152 $base64 = base64_encode($imagefile);
153 $attrs = array(
154 "imagtype" => $imagetype,
155 "label" => $answer->getImage(),
156 "embedded" => "base64"
157 );
158 $a_xml_writer->xmlElement("matimage", $attrs, $base64, false, false);
159 }
160 }
161 $a_xml_writer->xmlEndTag("material");
162 } else {
163 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext());
164 }
165 $a_xml_writer->xmlEndTag("response_label");
166 }
167 $a_xml_writer->xmlEndTag("render_choice");
168 $a_xml_writer->xmlEndTag("response_lid");
169 $a_xml_writer->xmlEndTag("flow");
170 $a_xml_writer->xmlEndTag("presentation");
171
172 // PART II: qti resprocessing
173 $a_xml_writer->xmlStartTag("resprocessing");
174 $a_xml_writer->xmlStartTag("outcomes");
175 $a_xml_writer->xmlStartTag("decvar");
176 $a_xml_writer->xmlEndTag("decvar");
177 $a_xml_writer->xmlEndTag("outcomes");
178 // add response conditions
179 foreach ($answers as $index => $answer) {
180 $attrs = array(
181 "continue" => "Yes"
182 );
183 $a_xml_writer->xmlStartTag("respcondition", $attrs);
184 // qti conditionvar
185 $a_xml_writer->xmlStartTag("conditionvar");
186 $attrs = array();
187 $attrs = array(
188 "respident" => "MCMR"
189 );
190 $a_xml_writer->xmlElement("varequal", $attrs, $index);
191 $a_xml_writer->xmlEndTag("conditionvar");
192 // qti setvar
193 $attrs = array(
194 "action" => "Add"
195 );
196 $a_xml_writer->xmlElement("setvar", $attrs, $answer->getPoints());
197 // qti displayfeedback
198 $linkrefid = "response_$index";
199 $attrs = array(
200 "feedbacktype" => "Response",
201 "linkrefid" => $linkrefid
202 );
203 $a_xml_writer->xmlElement("displayfeedback", $attrs);
204 $a_xml_writer->xmlEndTag("respcondition");
205 $attrs = array(
206 "continue" => "Yes"
207 );
208 $a_xml_writer->xmlStartTag("respcondition", $attrs);
209
210 // qti conditionvar
211 $a_xml_writer->xmlStartTag("conditionvar");
212 $attrs = array();
213 $attrs = array(
214 "respident" => "MCMR"
215 );
216 $a_xml_writer->xmlStartTag("not");
217 $a_xml_writer->xmlElement("varequal", $attrs, $index);
218 $a_xml_writer->xmlEndTag("not");
219 $a_xml_writer->xmlEndTag("conditionvar");
220 // qti setvar
221 $attrs = array(
222 "action" => "Add"
223 );
224 $a_xml_writer->xmlElement("setvar", $attrs, $answer->getPointsUnchecked());
225 $a_xml_writer->xmlEndTag("respcondition");
226 }
227 $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
228 $this->object->getId(),
229 true
230 );
231 if (strlen($feedback_allcorrect)) {
232 $attrs = array(
233 "continue" => "Yes"
234 );
235 $a_xml_writer->xmlStartTag("respcondition", $attrs);
236 // qti conditionvar
237 $a_xml_writer->xmlStartTag("conditionvar");
238 foreach ($answers as $index => $answer) {
239 if ($answer->getPointsChecked() < $answer->getPointsUnchecked()) {
240 $a_xml_writer->xmlStartTag("not");
241 }
242 $attrs = array(
243 "respident" => "MCMR"
244 );
245 $a_xml_writer->xmlElement("varequal", $attrs, $index);
246 if ($answer->getPointsChecked() < $answer->getPointsUnchecked()) {
247 $a_xml_writer->xmlEndTag("not");
248 }
249 }
250 $a_xml_writer->xmlEndTag("conditionvar");
251 // qti displayfeedback
252 $attrs = array(
253 "feedbacktype" => "Response",
254 "linkrefid" => "response_allcorrect"
255 );
256 $a_xml_writer->xmlElement("displayfeedback", $attrs);
257 $a_xml_writer->xmlEndTag("respcondition");
258 }
259 $feedback_onenotcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
260 $this->object->getId(),
261 false
262 );
263 if (strlen($feedback_onenotcorrect)) {
264 $attrs = array(
265 "continue" => "Yes"
266 );
267 $a_xml_writer->xmlStartTag("respcondition", $attrs);
268 // qti conditionvar
269 $a_xml_writer->xmlStartTag("conditionvar");
270 foreach ($answers as $index => $answer) {
271 if ($index > 0) {
272 $a_xml_writer->xmlStartTag("or");
273 }
274 if ($answer->getPointsChecked() >= $answer->getPointsUnchecked()) {
275 $a_xml_writer->xmlStartTag("not");
276 }
277 $attrs = array(
278 "respident" => "MCMR"
279 );
280 $a_xml_writer->xmlElement("varequal", $attrs, $index);
281 if ($answer->getPointsChecked() >= $answer->getPointsUnchecked()) {
282 $a_xml_writer->xmlEndTag("not");
283 }
284 if ($index > 0) {
285 $a_xml_writer->xmlEndTag("or");
286 }
287 }
288 $a_xml_writer->xmlEndTag("conditionvar");
289 // qti displayfeedback
290 $attrs = array(
291 "feedbacktype" => "Response",
292 "linkrefid" => "response_onenotcorrect"
293 );
294 $a_xml_writer->xmlElement("displayfeedback", $attrs);
295 $a_xml_writer->xmlEndTag("respcondition");
296 }
297 $a_xml_writer->xmlEndTag("resprocessing");
298
299 // PART III: qti itemfeedback
300 foreach ($answers as $index => $answer) {
301 $linkrefid = "response_$index";
302 $attrs = array(
303 "ident" => $linkrefid,
304 "view" => "All"
305 );
306 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
307 // qti flow_mat
308 $a_xml_writer->xmlStartTag("flow_mat");
309 $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackExportPresentation(
310 $this->object->getId(),
311 $index
312 );
313 $this->object->addQTIMaterial($a_xml_writer, $fb);
314 $a_xml_writer->xmlEndTag("flow_mat");
315 $a_xml_writer->xmlEndTag("itemfeedback");
316 }
317 if (strlen($feedback_allcorrect)) {
318 $attrs = array(
319 "ident" => "response_allcorrect",
320 "view" => "All"
321 );
322 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
323 // qti flow_mat
324 $a_xml_writer->xmlStartTag("flow_mat");
325 $this->object->addQTIMaterial($a_xml_writer, $feedback_allcorrect);
326 $a_xml_writer->xmlEndTag("flow_mat");
327 $a_xml_writer->xmlEndTag("itemfeedback");
328 }
329 if (strlen($feedback_onenotcorrect)) {
330 $attrs = array(
331 "ident" => "response_onenotcorrect",
332 "view" => "All"
333 );
334 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
335 // qti flow_mat
336 $a_xml_writer->xmlStartTag("flow_mat");
337 $this->object->addQTIMaterial($a_xml_writer, $feedback_onenotcorrect);
338 $a_xml_writer->xmlEndTag("flow_mat");
339 $a_xml_writer->xmlEndTag("itemfeedback");
340 }
341
342 $a_xml_writer->xmlEndTag("item");
343 $a_xml_writer->xmlEndTag("questestinterop");
344
345 $xml = $a_xml_writer->xmlDumpMem(false);
346 if (!$a_include_header) {
347 $pos = strpos($xml, "?>");
348 $xml = substr($xml, $pos + 2);
349 }
350 return $xml;
351 }
sprintf
sprintf('%.4f', $callTime)
Definition: 01pharSimple.php:87
assQuestionExport\addGeneralMetadata
addGeneralMetadata(ilXmlWriter $xmlwriter)
Definition: class.assQuestionExport.php:209
assQuestionExport\addQtiMetaDataField
addQtiMetaDataField(ilXmlWriter $a_xml_writer, $fieldLabel, $fieldValue)
adds a qti meta data field with given name and value to the passed xml writer (xml writer must be in ...
Definition: class.assQuestionExport.php:181
assQuestionExport\addAdditionalContentEditingModeInformation
addAdditionalContentEditingModeInformation(ilXmlWriter $a_xml_writer)
adds a qti meta data field for ilias specific information of "additional content editing mode" (xml w...
Definition: class.assQuestionExport.php:197
ilXmlWriter
XML writer class.
Definition: class.ilXmlWriter.php:18
ilXmlWriter\xmlHeader
xmlHeader()
Writes xml header @access public.
Definition: class.ilXmlWriter.php:275
MULTIPLE_CHOICE_QUESTION_IDENTIFIER
const MULTIPLE_CHOICE_QUESTION_IDENTIFIER
Definition: inc.AssessmentConstants.php:30
$index
$index
Definition: metadata.php:60
$xml
$xml
Definition: metadata.php:240

References $fh, $index, $xml, assQuestionExport\addAdditionalContentEditingModeInformation(), assQuestionExport\addGeneralMetadata(), assQuestionExport\addQtiMetaDataField(), MULTIPLE_CHOICE_QUESTION_IDENTIFIER, sprintf, and ilXmlWriter\xmlHeader().

+ Here is the call graph for this function:
The documentation for this class was generated from the following file: