ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
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
 assQuestionExport (&$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 $a_xml_writer->xmlEndTag("qtimetadata");
78 $a_xml_writer->xmlEndTag("itemmetadata");
79
80 // PART I: qti presentation
81 $attrs = array(
82 "label" => $this->object->getTitle()
83 );
84 $a_xml_writer->xmlStartTag("presentation", $attrs);
85 // add flow to presentation
86 $a_xml_writer->xmlStartTag("flow");
87 // add material with question text to presentation
88 $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
89 // add answers to presentation
90 $attrs = array();
91 $attrs = array(
92 "ident" => "MCSR",
93 "rcardinality" => "Single"
94 );
95 $a_xml_writer->xmlStartTag("response_lid", $attrs);
96 $solution = $this->object->getSuggestedSolution(0);
97 if (count($solution))
98 {
99 if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $solution["internal_link"], $matches))
100 {
101 $a_xml_writer->xmlStartTag("material");
102 $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
103 if (strcmp($matches[1], "") != 0)
104 {
105 $intlink = $solution["internal_link"];
106 }
107 $attrs = array(
108 "label" => "suggested_solution"
109 );
110 $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
111 $a_xml_writer->xmlEndTag("material");
112 }
113 }
114 // shuffle output
115 $attrs = array();
116 if ($this->object->getShuffle())
117 {
118 $attrs = array(
119 "shuffle" => "Yes"
120 );
121 }
122 else
123 {
124 $attrs = array(
125 "shuffle" => "No"
126 );
127 }
128 $a_xml_writer->xmlStartTag("render_choice", $attrs);
129 $answers =& $this->object->getAnswers();
130 $akeys = array_keys($answers);
131 if ($this->object->getShuffle() && $a_shuffle)
132 {
133 $akeys = $this->object->pcArrayShuffle($akeys);
134 }
135 // add answers
136 foreach ($akeys as $index)
137 {
138 $answer = $answers[$index];
139 $attrs = array(
140 "ident" => $index
141 );
142 $a_xml_writer->xmlStartTag("response_label", $attrs);
143
144 if (strlen($answer->getImage()))
145 {
146 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext(), FALSE, FALSE);
147 $imagetype = "image/jpeg";
148 if (preg_match("/.*\.(png|gif)$/", $answer->getImage(), $matches))
149 {
150 $imagetype = "image/" . $matches[1];
151 }
152 if ($force_image_references)
153 {
154 $attrs = array(
155 "imagtype" => $imagetype,
156 "label" => $answer->getImage(),
157 "uri" => $this->object->getImagePathWeb() . $answer->getImage()
158 );
159 $a_xml_writer->xmlElement("matimage", $attrs);
160 }
161 else
162 {
163 $imagepath = $this->object->getImagePath() . $answer->getImage();
164 $fh = @fopen($imagepath, "rb");
165 if ($fh != false)
166 {
167 $imagefile = fread($fh, filesize($imagepath));
168 fclose($fh);
169 $base64 = base64_encode($imagefile);
170 $attrs = array(
171 "imagtype" => $imagetype,
172 "label" => $answer->getImage(),
173 "embedded" => "base64"
174 );
175 $a_xml_writer->xmlElement("matimage", $attrs, $base64, FALSE, FALSE);
176 }
177 }
178 $a_xml_writer->xmlEndTag("material");
179 }
180 else
181 {
182 $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext());
183 }
184 $a_xml_writer->xmlEndTag("response_label");
185 }
186 $a_xml_writer->xmlEndTag("render_choice");
187 $a_xml_writer->xmlEndTag("response_lid");
188 $a_xml_writer->xmlEndTag("flow");
189 $a_xml_writer->xmlEndTag("presentation");
190
191 // PART II: qti resprocessing
192 $a_xml_writer->xmlStartTag("resprocessing");
193 $a_xml_writer->xmlStartTag("outcomes");
194 $a_xml_writer->xmlStartTag("decvar");
195 $a_xml_writer->xmlEndTag("decvar");
196 $a_xml_writer->xmlEndTag("outcomes");
197 // add response conditions
198 foreach ($answers as $index => $answer)
199 {
200 $attrs = array(
201 "continue" => "Yes"
202 );
203 $a_xml_writer->xmlStartTag("respcondition", $attrs);
204 // qti conditionvar
205 $a_xml_writer->xmlStartTag("conditionvar");
206 $attrs = array();
207 $attrs = array(
208 "respident" => "MCSR"
209 );
210 $a_xml_writer->xmlElement("varequal", $attrs, $index);
211 $a_xml_writer->xmlEndTag("conditionvar");
212 // qti setvar
213 $attrs = array(
214 "action" => "Add"
215 );
216 $a_xml_writer->xmlElement("setvar", $attrs, $answer->getPoints());
217 // qti displayfeedback
218 $linkrefid = "response_$index";
219 $attrs = array(
220 "feedbacktype" => "Response",
221 "linkrefid" => $linkrefid
222 );
223 $a_xml_writer->xmlElement("displayfeedback", $attrs);
224 $a_xml_writer->xmlEndTag("respcondition");
225 }
226
227 $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
228 $this->object->getId(), true
229 );
230 if (strlen($feedback_allcorrect))
231 {
232 $attrs = array(
233 "continue" => "Yes"
234 );
235 $a_xml_writer->xmlStartTag("respcondition", $attrs);
236 // qti conditionvar
237 $a_xml_writer->xmlStartTag("conditionvar");
238 $bestindex = 0;
239 $maxpoints = 0;
240 foreach ($answers as $index => $answer)
241 {
242 if ($answer->getPoints() > $maxpoints)
243 {
244 $maxpoints = $answer->getPoints();
245 $bestindex = $index;
246 }
247 }
248 $attrs = array(
249 "respident" => "MCSR"
250 );
251 $a_xml_writer->xmlElement("varequal", $attrs, $bestindex);
252 $a_xml_writer->xmlEndTag("conditionvar");
253 // qti displayfeedback
254 $attrs = array(
255 "feedbacktype" => "Response",
256 "linkrefid" => "response_allcorrect"
257 );
258 $a_xml_writer->xmlElement("displayfeedback", $attrs);
259 $a_xml_writer->xmlEndTag("respcondition");
260 }
261
262 $feedback_onenotcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
263 $this->object->getId(), false
264 );
265 if (strlen($feedback_onenotcorrect))
266 {
267 $attrs = array(
268 "continue" => "Yes"
269 );
270 $a_xml_writer->xmlStartTag("respcondition", $attrs);
271 // qti conditionvar
272 $a_xml_writer->xmlStartTag("conditionvar");
273 $bestindex = 0;
274 $maxpoints = 0;
275 foreach ($answers as $index => $answer)
276 {
277 if ($answer->getPoints() > $maxpoints)
278 {
279 $maxpoints = $answer->getPoints();
280 $bestindex = $index;
281 }
282 }
283 $attrs = array(
284 "respident" => "MCSR"
285 );
286 $a_xml_writer->xmlStartTag("not");
287 $a_xml_writer->xmlElement("varequal", $attrs, $bestindex);
288 $a_xml_writer->xmlEndTag("not");
289 $a_xml_writer->xmlEndTag("conditionvar");
290 // qti displayfeedback
291 $attrs = array(
292 "feedbacktype" => "Response",
293 "linkrefid" => "response_onenotcorrect"
294 );
295 $a_xml_writer->xmlElement("displayfeedback", $attrs);
296 $a_xml_writer->xmlEndTag("respcondition");
297 }
298
299 $a_xml_writer->xmlEndTag("resprocessing");
300
301 // PART III: qti itemfeedback
302 foreach ($answers as $index => $answer)
303 {
304 $linkrefid = "response_$index";
305 $attrs = array(
306 "ident" => $linkrefid,
307 "view" => "All"
308 );
309 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
310 // qti flow_mat
311 $a_xml_writer->xmlStartTag("flow_mat");
312 $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackExportPresentation(
313 $this->object->getId(), $index
314 );
315 $this->object->addQTIMaterial($a_xml_writer, $fb);
316 $a_xml_writer->xmlEndTag("flow_mat");
317 $a_xml_writer->xmlEndTag("itemfeedback");
318 }
319 if (strlen($feedback_allcorrect))
320 {
321 $attrs = array(
322 "ident" => "response_allcorrect",
323 "view" => "All"
324 );
325 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
326 // qti flow_mat
327 $a_xml_writer->xmlStartTag("flow_mat");
328 $this->object->addQTIMaterial($a_xml_writer, $feedback_allcorrect);
329 $a_xml_writer->xmlEndTag("flow_mat");
330 $a_xml_writer->xmlEndTag("itemfeedback");
331 }
332 if (strlen($feedback_onenotcorrect))
333 {
334 $attrs = array(
335 "ident" => "response_onenotcorrect",
336 "view" => "All"
337 );
338 $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
339 // qti flow_mat
340 $a_xml_writer->xmlStartTag("flow_mat");
341 $this->object->addQTIMaterial($a_xml_writer, $feedback_onenotcorrect);
342 $a_xml_writer->xmlEndTag("flow_mat");
343 $a_xml_writer->xmlEndTag("itemfeedback");
344 }
345
346 $a_xml_writer->xmlEndTag("item");
347 $a_xml_writer->xmlEndTag("questestinterop");
348
349 $xml = $a_xml_writer->xmlDumpMem(FALSE);
350 if (!$a_include_header)
351 {
352 $pos = strpos($xml, "?>");
353 $xml = substr($xml, $pos + 2);
354 }
355 return $xml;
356 }
assQuestionExport\addGeneralMetadata
addGeneralMetadata(ilXmlWriter $xmlwriter)
Definition: class.assQuestionExport.php:210
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 assQuestionExport\addAdditionalContentEditingModeInformation(), assQuestionExport\addGeneralMetadata(), SINGLE_CHOICE_QUESTION_IDENTIFIER, and ilXmlWriter\xmlHeader().

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