ILIAS  release_5-2 Revision v5.2.25-18-g3f80b828510
Public Member Functions
assSingleChoiceExport Class Reference
Modules/TestQuestionPool

Class for single choice question exports. More...

+ Inheritance diagram for assSingleChoiceExport:
+ Collaboration diagram for assSingleChoiceExport:

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 single choice question exports.

assSingleChoiceExport is a class for single 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.assSingleChoiceExport.php.

Member Function Documentation

◆ toXML()

assSingleChoiceExport::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.assSingleChoiceExport.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, SINGLE_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" => "MCSR",
95 "rcardinality" => "Single"
96 );
97 $a_xml_writer->xmlStartTag("response_lid", $attrs);
98 $solution = $this->object->getSuggestedSolution(0);
99 if (count($solution))
100 {
101 if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $solution["internal_link"], $matches))
102 {
103 $a_xml_writer->xmlStartTag("material");
104 $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
105 if (strcmp($matches[1], "") != 0)
106 {
107 $intlink = $solution["internal_link"];
108 }
109 $attrs = array(
110 "label" => "suggested_solution"
111 );
112 $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
113 $a_xml_writer->xmlEndTag("material");
114 }
115 }
116 // shuffle output
117 $attrs = array();
118 if ($this->object->getShuffle())
119 {
120 $attrs = array(
121 "shuffle" => "Yes"
122 );
123 }
124 else
125 {
126 $attrs = array(
127 "shuffle" => "No"
128 );
129 }
130 $a_xml_writer->xmlStartTag("render_choice", $attrs);
131 $answers =& $this->object->getAnswers();
132 $akeys = array_keys($answers);
133 if ($this->object->getShuffle() && $a_shuffle)
134 {
135 $akeys = $this->object->pcArrayShuffle($akeys);
136 }
137 // add answers
138 foreach ($akeys as $index)
139 {
140 $answer = $answers[$index];
141 $attrs = array(
142 "ident" => $index
143 );
144 $a_xml_writer->xmlStartTag("response_label", $attrs);
145
146 if (strlen($answer->getImage()))
147 {
148 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext(), FALSE, FALSE);
149 $imagetype = "image/jpeg";
150 if (preg_match("/.*\.(png|gif)$/", $answer->getImage(), $matches))
151 {
152 $imagetype = "image/" . $matches[1];
153 }
154 if ($force_image_references)
155 {
156 $attrs = array(
157 "imagtype" => $imagetype,
158 "label" => $answer->getImage(),
159 "uri" => $this->object->getImagePathWeb() . $answer->getImage()
160 );
161 $a_xml_writer->xmlElement("matimage", $attrs);
162 }
163 else
164 {
165 $imagepath = $this->object->getImagePath() . $answer->getImage();
166 $fh = @fopen($imagepath, "rb");
167 if ($fh != false)
168 {
169 $imagefile = fread($fh, filesize($imagepath));
170 fclose($fh);
171 $base64 = base64_encode($imagefile);
172 $attrs = array(
173 "imagtype" => $imagetype,
174 "label" => $answer->getImage(),
175 "embedded" => "base64"
176 );
177 $a_xml_writer->xmlElement("matimage", $attrs, $base64, FALSE, FALSE);
178 }
179 }
180 $a_xml_writer->xmlEndTag("material");
181 }
182 else
183 {
184 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext());
185 }
186 $a_xml_writer->xmlEndTag("response_label");
187 }
188 $a_xml_writer->xmlEndTag("render_choice");
189 $a_xml_writer->xmlEndTag("response_lid");
190 $a_xml_writer->xmlEndTag("flow");
191 $a_xml_writer->xmlEndTag("presentation");
192
193 // PART II: qti resprocessing
194 $a_xml_writer->xmlStartTag("resprocessing");
195 $a_xml_writer->xmlStartTag("outcomes");
196 $a_xml_writer->xmlStartTag("decvar");
197 $a_xml_writer->xmlEndTag("decvar");
198 $a_xml_writer->xmlEndTag("outcomes");
199 // add response conditions
200 foreach ($answers as $index => $answer)
201 {
202 $attrs = array(
203 "continue" => "Yes"
204 );
205 $a_xml_writer->xmlStartTag("respcondition", $attrs);
206 // qti conditionvar
207 $a_xml_writer->xmlStartTag("conditionvar");
208 $attrs = array();
209 $attrs = array(
210 "respident" => "MCSR"
211 );
212 $a_xml_writer->xmlElement("varequal", $attrs, $index);
213 $a_xml_writer->xmlEndTag("conditionvar");
214 // qti setvar
215 $attrs = array(
216 "action" => "Add"
217 );
218 $a_xml_writer->xmlElement("setvar", $attrs, $answer->getPoints());
219 // qti displayfeedback
220 $linkrefid = "response_$index";
221 $attrs = array(
222 "feedbacktype" => "Response",
223 "linkrefid" => $linkrefid
224 );
225 $a_xml_writer->xmlElement("displayfeedback", $attrs);
226 $a_xml_writer->xmlEndTag("respcondition");
227 }
228
229 $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
230 $this->object->getId(), true
231 );
232 if (strlen($feedback_allcorrect))
233 {
234 $attrs = array(
235 "continue" => "Yes"
236 );
237 $a_xml_writer->xmlStartTag("respcondition", $attrs);
238 // qti conditionvar
239 $a_xml_writer->xmlStartTag("conditionvar");
240 $bestindex = 0;
241 $maxpoints = 0;
242 foreach ($answers as $index => $answer)
243 {
244 if ($answer->getPoints() > $maxpoints)
245 {
246 $maxpoints = $answer->getPoints();
247 $bestindex = $index;
248 }
249 }
250 $attrs = array(
251 "respident" => "MCSR"
252 );
253 $a_xml_writer->xmlElement("varequal", $attrs, $bestindex);
254 $a_xml_writer->xmlEndTag("conditionvar");
255 // qti displayfeedback
256 $attrs = array(
257 "feedbacktype" => "Response",
258 "linkrefid" => "response_allcorrect"
259 );
260 $a_xml_writer->xmlElement("displayfeedback", $attrs);
261 $a_xml_writer->xmlEndTag("respcondition");
262 }
263
264 $feedback_onenotcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
265 $this->object->getId(), false
266 );
267 if (strlen($feedback_onenotcorrect))
268 {
269 $attrs = array(
270 "continue" => "Yes"
271 );
272 $a_xml_writer->xmlStartTag("respcondition", $attrs);
273 // qti conditionvar
274 $a_xml_writer->xmlStartTag("conditionvar");
275 $bestindex = 0;
276 $maxpoints = 0;
277 foreach ($answers as $index => $answer)
278 {
279 if ($answer->getPoints() > $maxpoints)
280 {
281 $maxpoints = $answer->getPoints();
282 $bestindex = $index;
283 }
284 }
285 $attrs = array(
286 "respident" => "MCSR"
287 );
288 $a_xml_writer->xmlStartTag("not");
289 $a_xml_writer->xmlElement("varequal", $attrs, $bestindex);
290 $a_xml_writer->xmlEndTag("not");
291 $a_xml_writer->xmlEndTag("conditionvar");
292 // qti displayfeedback
293 $attrs = array(
294 "feedbacktype" => "Response",
295 "linkrefid" => "response_onenotcorrect"
296 );
297 $a_xml_writer->xmlElement("displayfeedback", $attrs);
298 $a_xml_writer->xmlEndTag("respcondition");
299 }
300
301 $a_xml_writer->xmlEndTag("resprocessing");
302
303 // PART III: qti itemfeedback
304 foreach ($answers as $index => $answer)
305 {
306 $linkrefid = "response_$index";
307 $attrs = array(
308 "ident" => $linkrefid,
309 "view" => "All"
310 );
311 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
312 // qti flow_mat
313 $a_xml_writer->xmlStartTag("flow_mat");
314 $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackExportPresentation(
315 $this->object->getId(), $index
316 );
317 $this->object->addQTIMaterial($a_xml_writer, $fb);
318 $a_xml_writer->xmlEndTag("flow_mat");
319 $a_xml_writer->xmlEndTag("itemfeedback");
320 }
321 if (strlen($feedback_allcorrect))
322 {
323 $attrs = array(
324 "ident" => "response_allcorrect",
325 "view" => "All"
326 );
327 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
328 // qti flow_mat
329 $a_xml_writer->xmlStartTag("flow_mat");
330 $this->object->addQTIMaterial($a_xml_writer, $feedback_allcorrect);
331 $a_xml_writer->xmlEndTag("flow_mat");
332 $a_xml_writer->xmlEndTag("itemfeedback");
333 }
334 if (strlen($feedback_onenotcorrect))
335 {
336 $attrs = array(
337 "ident" => "response_onenotcorrect",
338 "view" => "All"
339 );
340 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
341 // qti flow_mat
342 $a_xml_writer->xmlStartTag("flow_mat");
343 $this->object->addQTIMaterial($a_xml_writer, $feedback_onenotcorrect);
344 $a_xml_writer->xmlEndTag("flow_mat");
345 $a_xml_writer->xmlEndTag("itemfeedback");
346 }
347
348 $a_xml_writer->xmlEndTag("item");
349 $a_xml_writer->xmlEndTag("questestinterop");
350
351 $xml = $a_xml_writer->xmlDumpMem(FALSE);
352 if (!$a_include_header)
353 {
354 $pos = strpos($xml, "?>");
355 $xml = substr($xml, $pos + 2);
356 }
357 return $xml;
358 }
sprintf
sprintf('%.4f', $callTime)
Definition: 01pharSimple.php:87
assQuestionExport\addGeneralMetadata
addGeneralMetadata(ilXmlWriter $xmlwriter)
Definition: class.assQuestionExport.php:210
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:184
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:200
ilXmlWriter
XML writer class.
Definition: class.ilXmlWriter.php:18
ilXmlWriter\xmlHeader
xmlHeader()
Writes xml header @access public.
Definition: class.ilXmlWriter.php:297
SINGLE_CHOICE_QUESTION_IDENTIFIER
const SINGLE_CHOICE_QUESTION_IDENTIFIER
Definition: inc.AssessmentConstants.php:31

References $duration, $fh, assQuestionExport\addAdditionalContentEditingModeInformation(), assQuestionExport\addGeneralMetadata(), assQuestionExport\addQtiMetaDataField(), SINGLE_CHOICE_QUESTION_IDENTIFIER, sprintf, and ilXmlWriter\xmlHeader().

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