ImsAssessmentItem::ImsAssessmentItem() - Code Metrics - Inspection of "Minor - Update deprecated constructors syntax and..." - chamilo/chamilo-lms - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 1.10.x ( 4eb5d1...71e5e5 )

by Yannick

created 2016-08-02 15:54 UTC

ImsAssessmentItem::ImsAssessmentItem() A

↳ Parent: ImsAssessmentItem

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	1
dl	0
loc	6
rs	9.4285
c	0
b	0
f	0

<?php
/* For licensing terms, see /license.txt */
/**
 * @author Claro Team <[email protected]>
 * @author Yannick Warnier <[email protected]>
 * @package chamilo.exercise
 */
/**
 * Code
 */
require dirname(__FILE__) . '/qti2_classes.php';
/**
 * Classes
*/

/**
 * An IMS/QTI item. It corresponds to a single question.
 * This class allows export from Claroline to IMS/QTI2.0 XML format of a single question.
 * It is not usable as-is, but must be subclassed, to support different kinds of questions.
 *
 * Every start_*() and corresponding end_*(), as well as export_*() methods return a string.
 *
 * note: Attached files are NOT exported.
 * @package chamilo.exercise
 */
class ImsAssessmentItem
{
    public $question;
    public $question_ident;
    public $answer;

    /**
     * Constructor.
     *
     * @param Ims2Question $question Ims2Question object we want to export.
     */
     function __construct($question)
     {
        $this->question = $question;
        $this->answer = $this->question->setAnswer();
        $this->questionIdent = "QST_" . $question->id ;
     }

     /**
      * Start the XML flow.
      *
      * This opens the <item> block, with correct attributes.
      *
      */
      function start_item()
      {
        $string = '<assessmentItem xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1"
                    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                    xsi:schemaLocation="http://www.imsglobal.org/xsd/imsqti_v2p1 imsqti_v2p1.xsd"
                    identifier="'.$this->questionIdent.'"
                    title="'.htmlspecialchars(formatExerciseQtiTitle($this->question->selectTitle())).'">'."\n";

        return $string;
      }

      /**
       * End the XML flow, closing the </item> tag.
       *
       */
      function end_item()
      {
        return "</assessmentItem>\n";
      }

     /**
      * Start the itemBody
      *
      */
     function start_item_body()
     {
        return '  <itemBody>' . "\n";
     }

     /**
      * End the itemBody part.
      *
      */
     function end_item_body()
     {
        return "  </itemBody>\n";
     }

     /**
      * add the response processing template used.
      *
      */

      function add_response_processing()
      {
          return '  <responseProcessing template="http://www.imsglobal.org/question/qti_v2p1/rptemplates/map_correct"/>' . "\n";
      }

     /**
      * Export the question as an IMS/QTI Item.
      *
      * This is a default behaviour, some classes may want to override this.
      *
      * @param $standalone: Boolean stating if it should be exported as a stand-alone question
      * @return string string, the XML flow for an Item.
      */
     function export($standalone = false)
     {
        $head = $foot = "";

        if ($standalone) {
            $head = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . "\n";
        }
        //TODO understand why answer might be a non-object sometimes
        if (!is_object($this->answer)) {
            return $head;
        }

        $res = $head
            .$this->start_item()
            .$this->answer->imsExportResponsesDeclaration($this->questionIdent)
            .$this->start_item_body()
            .$this->answer->imsExportResponses(
                $this->questionIdent,
                $this->question->question,
                $this->question->description,
                $this->question->picture
            )
            .$this->end_item_body()
            .$this->add_response_processing()
            .$this->end_item()
            .$foot;

        return $res;
     }
}

/**
 * This class represents an entire exercise to be exported in IMS/QTI.
 * It will be represented by a single <section> containing several <item>.
 *
 * Some properties cannot be exported, as IMS does not support them :
 *   - type (one page or multiple pages)
 *   - start_date and end_date
 *   - max_attempts
 *   - show_answer
 *   - anonymous_attempts
 *
 * @author Amand Tihon <[email protected]>
 * @package chamilo.exercise
 */
class ImsSection

{
    public $exercise;

    /**
     * Constructor.
     * @param Exercise $exe The Exercise instance to export
     * @return ImsSection

     * @author Amand Tihon <[email protected]>
     */
    function __construct($exe)
    {
        $this->exercise = $exe;
    }

    function start_section()
    {
        $out = '<section ident="EXO_' . $this->exercise->selectId() . '" title="' .cleanAttribute(formatExerciseQtiDescription($this->exercise->selectTitle())) . '">' . "\n";
        return $out;
    }

    function end_section()
    {
        return "</section>\n";
    }

    function export_duration()
    {
        if ($max_time = $this->exercise->selectTimeLimit())
        {
            // return exercise duration in ISO8601 format.
            $minutes = floor($max_time / 60);
            $seconds = $max_time % 60;
            return '<duration>PT' . $minutes . 'M' . $seconds . "S</duration>\n";
        } else {
            return '';
        }
    }

    /**
     * Export the presentation (Exercise's description)
     * @author Amand Tihon <[email protected]>
     */
    function export_presentation()
    {
        $out = "<presentation_material><flow_mat><material>\n"
             . "  <mattext><![CDATA[" . formatExerciseQtiDescription($this->exercise->selectDescription()) . "]]></mattext>\n"
             . "</material></flow_mat></presentation_material>\n";
        return $out;
    }

    /**
     * Export the ordering information.
     * Either sequential, through all questions, or random, with a selected number of questions.
     * @author Amand Tihon <[email protected]>
     */
    function export_ordering()
    {
        $out = '';
        if ($n = $this->exercise->getShuffle()) {
            $out.= "<selection_ordering>"
                 . "  <selection>\n"
                 . "    <selection_number>" . $n . "</selection_number>\n"
                 . "  </selection>\n"
                 . '  <order order_type="Random" />'
                 . "\n</selection_ordering>\n";
        } else {
            $out.= '<selection_ordering sequence_type="Normal">' . "\n"
                 . "  <selection />\n"
                 . "</selection_ordering>\n";
        }

        return $out;
    }

    /**
     * Export the questions, as a succession of <items>
     * @author Amand Tihon <[email protected]>
     */
    function export_questions()
    {
        $out = "";
        foreach ($this->exercise->selectQuestionList() as $q) {
        	$out .= export_question_qti($q, false);
        }
        return $out;
    }

    /**
     * Export the exercise in IMS/QTI.
     *
     * @param bool $standalone Wether it should include XML tag and DTD line.
     * @return string string containing the XML flow
     * @author Amand Tihon <[email protected]>
     */
    function export($standalone)
    {
        $head = $foot = "";
        if ($standalone) {
            $head = '<?xml version = "1.0" encoding = "UTF-8" standalone = "no"?>' . "\n"
                  . '<!DOCTYPE questestinterop SYSTEM "ims_qtiasiv2p1.dtd">' . "\n"
                  . "<questestinterop>\n";
            $foot = "</questestinterop>\n";
        }
        $out = $head
             . $this->start_section()
             . $this->export_duration()
             . $this->export_presentation()
             . $this->export_ordering()
             . $this->export_questions()
             . $this->end_section()
             . $foot;

        return $out;
    }
}

/*
    Some quick notes on identifiers generation.
    The IMS format requires some blocks, like items, responses, feedbacks, to be uniquely
    identified.
    The unicity is mandatory in a single XML, of course, but it's prefered that the identifier stays
    coherent for an entire site.

    Here's the method used to generate those identifiers.
    Question identifier :: "QST_" + <Question Id from the DB> + "_" + <Question numeric type>
    Response identifier :: <Question identifier> + "_A_" + <Response Id from the DB>
    Condition identifier :: <Question identifier> + "_C_" + <Response Id from the DB>
    Feedback identifier :: <Question identifier> + "_F_" + <Response Id from the DB>
*/
/**
 * Class ImsItem
 *
 * An IMS/QTI item. It corresponds to a single question.
 * This class allows export from Claroline to IMS/QTI XML format.
 * It is not usable as-is, but must be subclassed, to support different kinds of questions.
 *
 * Every start_*() and corresponding end_*(), as well as export_*() methods return a string.
 *
 * warning: Attached files are NOT exported.
 * @author Amand Tihon <[email protected]>
 *
 * @package chamilo.exercise
 */

class ImsItem

{
    public $question;
    public $question_ident;
    public $answer;

    /**
     * Constructor.
     *
     * @param $question The Question object we want to export.
     * @return ImsItem

     * @author Anamd Tihon
     */
     function __construct($question)
     {
        $this->question = $question;
        $this->answer = $question->answer;
        $this->questionIdent = "QST_" . $question->selectId() ;
     }

     /**
      * Start the XML flow.
      *
      * This opens the <item> block, with correct attributes.
      *
      * @author Amand Tihon <[email protected]>
      */
      function start_item()
      {
        return '<item title="' . cleanAttribute(formatExerciseQtiDescription($this->question->selectTitle())) . '" ident="' . $this->questionIdent . '">' . "\n";
      }

      /**
       * End the XML flow, closing the </item> tag.
       *
       * @author Amand Tihon <[email protected]>
       */
      function end_item()
      {
        return "</item>\n";
      }

     /**
      * Create the opening, with the question itself.
      *
      * This means it opens the <presentation> but doesn't close it, as this is the role of end_presentation().
      * In between, the export_responses from the subclass should have been called.
      *
      * @author Amand Tihon <[email protected]>
      */
     function start_presentation()
     {
        return '<presentation label="' . $this->questionIdent . '"><flow>' . "\n"
             . '<material><mattext>' . formatExerciseQtiDescription($this->question->selectDescription()) . "</mattext></material>\n";
     }

     /**
      * End the </presentation> part, opened by export_header.
      *
      * @author Amand Tihon <[email protected]>
      */
     function end_presentation()
     {
        return "</flow></presentation>\n";
     }

     /**
      * Start the response processing, and declare the default variable, SCORE, at 0 in the outcomes.
      *
      * @author Amand Tihon <[email protected]>
      */
     function start_processing()
     {
        return '<resprocessing><outcomes><decvar vartype="Integer" defaultval="0" /></outcomes>' . "\n";
     }

     /**
      * End the response processing part.
      *
      * @author Amand Tihon <[email protected]>
      */
     function end_processing()
     {
        return "</resprocessing>\n";
     }

     /**
      * Export the question as an IMS/QTI Item.
      *
      * This is a default behaviour, some classes may want to override this.
      *
      * @param $standalone: Boolean stating if it should be exported as a stand-alone question
      * @return string string, the XML flow for an Item.
      * @author Amand Tihon <[email protected]>
      */
     function export($standalone = False)
     {
        global $charset;
        $head = $foot = "";

        if ($standalone) {
            $head = '<?xml version = "1.0" encoding = "'.$charset.'" standalone = "no"?>' . "\n"
                  . '<!DOCTYPE questestinterop SYSTEM "ims_qtiasiv2p1.dtd">' . "\n"
                  . "<questestinterop>\n";
            $foot = "</questestinterop>\n";
        }

        return $head
            . $this->start_item()
            . $this->start_presentation()
            . $this->answer->imsExportResponses($this->questionIdent)
            . $this->end_presentation()
            . $this->start_processing()
            . $this->answer->imsExportProcessing($this->questionIdent)
            . $this->end_processing()
            . $this->answer->imsExportFeedback($this->questionIdent)
            . $this->end_item()
            . $foot;
     }
}

/**
 * Send a complete exercise in IMS/QTI format, from its ID
 *
 * @param int $exerciseId The exercise to export
 * @param boolean $standalone Wether it should include XML tag and DTD line.
 * @return string XML as a string, or an empty string if there's no exercise with given ID.
 */
function export_exercise_to_qti($exerciseId, $standalone = true)
{
    $exercise = new Exercise();
    if (!$exercise->read($exerciseId)) {
        return '';
    }
    $ims = new ImsSection($exercise);
    $xml = $ims->export($standalone);
    return $xml;
}

/**
 * Returns the XML flow corresponding to one question
 *
 * @param int $questionId
 * @param bool $standalone (ie including XML tag, DTD declaration, etc)
 * @return string
 */
function export_question_qti($questionId, $standalone = true)
{
    $question = new Ims2Question();
    $qst = $question->read($questionId);
    if (!$qst or $qst->type == FREE_ANSWER) {
        return '';
    }
    $question->id = $qst->id;
    $question->type = $qst->type;
    $question->question = $qst->question;
    $question->description = $qst->description;
	$question->weighting=$qst->weighting;
	$question->position=$qst->position;
	$question->picture=$qst->picture;
    $ims = new ImsAssessmentItem($question);

    return $ims->export($standalone);
}

/**
 * Clean text like a description
 **/
function formatExerciseQtiDescription($text)
{
    $entities = api_html_entity_decode($text);
    return htmlspecialchars($entities);
}

/**
 * Clean titles
 * @param $text
 * @return string
 */
function formatExerciseQtiTitle($text)
{
    return htmlspecialchars($text);
}

/**
 * @param string $text
 */
function cleanAttribute($text)
{
    return $text;
}


1		<?php
2		/* For licensing terms, see /license.txt */
3		/**
4		* @author Claro Team <[email protected]>
5		* @author Yannick Warnier <[email protected]>
6		* @package chamilo.exercise
7		*/
8		/**
9		* Code
10		*/
11		require dirname(__FILE__) . '/qti2_classes.php';
12		/**
13		* Classes
14		*/
15
16		/**
17		* An IMS/QTI item. It corresponds to a single question.
18		* This class allows export from Claroline to IMS/QTI2.0 XML format of a single question.
19		* It is not usable as-is, but must be subclassed, to support different kinds of questions.
20		*
21		* Every start_() and corresponding end_(), as well as export_*() methods return a string.
22		*
23		* note: Attached files are NOT exported.
24		* @package chamilo.exercise
25		*/
26		class ImsAssessmentItem
27		{
28		public $question;
29		public $question_ident;
30		public $answer;
31
32		/**
33		* Constructor.
34		*
35		* @param Ims2Question $question Ims2Question object we want to export.
36		*/
37		function __construct($question)
38		{
39		$this->question = $question;
40		$this->answer = $this->question->setAnswer();
41		$this->questionIdent = "QST_" . $question->id ;
42		}
43
44		/**
45		* Start the XML flow.
46		*
47		* This opens the <item> block, with correct attributes.
48		*
49		*/
50		function start_item()
51		{
52		$string = '<assessmentItem xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1"
53		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
54		xsi:schemaLocation="http://www.imsglobal.org/xsd/imsqti_v2p1 imsqti_v2p1.xsd"
55		identifier="'.$this->questionIdent.'"
56		title="'.htmlspecialchars(formatExerciseQtiTitle($this->question->selectTitle())).'">'."\n";
57
58		return $string;
59		}
60
61		/**
62		* End the XML flow, closing the </item> tag.
63		*
64		*/
65		function end_item()
66		{
67		return "</assessmentItem>\n";
68		}
69
70		/**
71		* Start the itemBody
72		*
73		*/
74		function start_item_body()
75		{
76		return ' <itemBody>' . "\n";
77		}
78
79		/**
80		* End the itemBody part.
81		*
82		*/
83		function end_item_body()
84		{
85		return " </itemBody>\n";
86		}
87
88		/**
89		* add the response processing template used.
90		*
91		*/
92
93		function add_response_processing()
94		{
95		return ' <responseProcessing template="http://www.imsglobal.org/question/qti_v2p1/rptemplates/map_correct"/>' . "\n";
96		}
97
98		/**
99		* Export the question as an IMS/QTI Item.
100		*
101		* This is a default behaviour, some classes may want to override this.
102		*
103		* @param $standalone: Boolean stating if it should be exported as a stand-alone question
104		* @return string string, the XML flow for an Item.
105		*/
106		function export($standalone = false)
107		{
108		$head = $foot = "";
109
110		if ($standalone) {
111		$head = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . "\n";
112		}
113		//TODO understand why answer might be a non-object sometimes
114		if (!is_object($this->answer)) {
115		return $head;
116		}
117
118		$res = $head
119		.$this->start_item()
120		.$this->answer->imsExportResponsesDeclaration($this->questionIdent)
121		.$this->start_item_body()
122		.$this->answer->imsExportResponses(
123		$this->questionIdent,
124		$this->question->question,
125		$this->question->description,
126		$this->question->picture
127		)
128		.$this->end_item_body()
129		.$this->add_response_processing()
130		.$this->end_item()
131		.$foot;
132
133		return $res;
134		}
135		}
136
137		/**
138		* This class represents an entire exercise to be exported in IMS/QTI.
139		* It will be represented by a single <section> containing several <item>.
140		*
141		* Some properties cannot be exported, as IMS does not support them :
142		* - type (one page or multiple pages)
143		* - start_date and end_date
144		* - max_attempts
145		* - show_answer
146		* - anonymous_attempts
147		*
148		* @author Amand Tihon <[email protected]>
149		* @package chamilo.exercise
150		*/
151		class ImsSection
		0 ignored issues – show Coding Style Compatibility introduced 2016-02-26 17:08 UTC by Report Bug Copy Issue Report PSR1 recommends that each class should be in its own file to aid autoloaders. Having each class in a dedicated file usually plays nice with PSR autoloaders and is therefore a well established practice. If you use other autoloaders, you might not want to follow this rule. Loading history...
152		{
153		public $exercise;
154
155		/**
156		* Constructor.
157		* @param Exercise $exe The Exercise instance to export
158		* @return ImsSection
		0 ignored issues – show Comprehensibility Best Practice introduced 2016-08-02 16:40 UTC by Report Bug Copy Issue Report Adding a `@return` annotation to constructors is generally not recommended as a constructor does not have a meaningful return value. Adding a `@return` annotation to a constructor is not recommended, since a constructor does not have a meaningful return value. Please refer to the PHP core documentation on constructors. Loading history...
159		* @author Amand Tihon <[email protected]>
160		*/
161		function __construct($exe)
162		{
163		$this->exercise = $exe;
164		}
165
166		function start_section()
167		{
168		$out = '<section ident="EXO_' . $this->exercise->selectId() . '" title="' .cleanAttribute(formatExerciseQtiDescription($this->exercise->selectTitle())) . '">' . "\n";
169		return $out;
170		}
171
172		function end_section()
173		{
174		return "</section>\n";
175		}
176
177		function export_duration()
178		{
179		if ($max_time = $this->exercise->selectTimeLimit())
180		{
181		// return exercise duration in ISO8601 format.
182		$minutes = floor($max_time / 60);
183		$seconds = $max_time % 60;
184		return '<duration>PT' . $minutes . 'M' . $seconds . "S</duration>\n";
185		} else {
186		return '';
187		}
188		}
189
190		/**
191		* Export the presentation (Exercise's description)
192		* @author Amand Tihon <[email protected]>
193		*/
194		function export_presentation()
195		{
196		$out = "<presentation_material><flow_mat><material>\n"
197		. " <mattext><![CDATA[" . formatExerciseQtiDescription($this->exercise->selectDescription()) . "]]></mattext>\n"
198		. "</material></flow_mat></presentation_material>\n";
199		return $out;
200		}
201
202		/**
203		* Export the ordering information.
204		* Either sequential, through all questions, or random, with a selected number of questions.
205		* @author Amand Tihon <[email protected]>
206		*/
207		function export_ordering()
208		{
209		$out = '';
210		if ($n = $this->exercise->getShuffle()) {
211		$out.= "<selection_ordering>"
212		. " <selection>\n"
213		. " <selection_number>" . $n . "</selection_number>\n"
214		. " </selection>\n"
215		. ' <order order_type="Random" />'
216		. "\n</selection_ordering>\n";
217		} else {
218		$out.= '<selection_ordering sequence_type="Normal">' . "\n"
219		. " <selection />\n"
220		. "</selection_ordering>\n";
221		}
222
223		return $out;
224		}
225
226		/**
227		* Export the questions, as a succession of <items>
228		* @author Amand Tihon <[email protected]>
229		*/
230		function export_questions()
231		{
232		$out = "";
233		foreach ($this->exercise->selectQuestionList() as $q) {
234		$out .= export_question_qti($q, false);
235		}
236		return $out;
237		}
238
239		/**
240		* Export the exercise in IMS/QTI.
241		*
242		* @param bool $standalone Wether it should include XML tag and DTD line.
243		* @return string string containing the XML flow
244		* @author Amand Tihon <[email protected]>
245		*/
246		function export($standalone)
247		{
248		$head = $foot = "";
249		if ($standalone) {
250		$head = '<?xml version = "1.0" encoding = "UTF-8" standalone = "no"?>' . "\n"
251		. '<!DOCTYPE questestinterop SYSTEM "ims_qtiasiv2p1.dtd">' . "\n"
252		. "<questestinterop>\n";
253		$foot = "</questestinterop>\n";
254		}
255		$out = $head
256		. $this->start_section()
257		. $this->export_duration()
258		. $this->export_presentation()
259		. $this->export_ordering()
260		. $this->export_questions()
261		. $this->end_section()
262		. $foot;
263
264		return $out;
265		}
266		}
267
268		/*
269		Some quick notes on identifiers generation.
270		The IMS format requires some blocks, like items, responses, feedbacks, to be uniquely
271		identified.
272		The unicity is mandatory in a single XML, of course, but it's prefered that the identifier stays
273		coherent for an entire site.
274
275		Here's the method used to generate those identifiers.
276		Question identifier :: "QST_" + <Question Id from the DB> + "_" + <Question numeric type>
277		Response identifier :: <Question identifier> + "_A_" + <Response Id from the DB>
278		Condition identifier :: <Question identifier> + "_C_" + <Response Id from the DB>
279		Feedback identifier :: <Question identifier> + "_F_" + <Response Id from the DB>
280		*/
281		/**
282		* Class ImsItem
283		*
284		* An IMS/QTI item. It corresponds to a single question.
285		* This class allows export from Claroline to IMS/QTI XML format.
286		* It is not usable as-is, but must be subclassed, to support different kinds of questions.
287		*
288		* Every start_() and corresponding end_(), as well as export_*() methods return a string.
289		*
290		* warning: Attached files are NOT exported.
291		* @author Amand Tihon <[email protected]>
292		*
293		* @package chamilo.exercise
294		*/
295
296		class ImsItem
		0 ignored issues – show Coding Style Compatibility introduced 2016-02-26 17:08 UTC by Report Bug Copy Issue Report PSR1 recommends that each class should be in its own file to aid autoloaders. Having each class in a dedicated file usually plays nice with PSR autoloaders and is therefore a well established practice. If you use other autoloaders, you might not want to follow this rule. Loading history...
297		{
298		public $question;
299		public $question_ident;
300		public $answer;
301
302		/**
303		* Constructor.
304		*
305		* @param $question The Question object we want to export.
306		* @return ImsItem
		0 ignored issues – show Comprehensibility Best Practice introduced 2016-08-02 16:40 UTC by Report Bug Copy Issue Report Adding a `@return` annotation to constructors is generally not recommended as a constructor does not have a meaningful return value. Adding a `@return` annotation to a constructor is not recommended, since a constructor does not have a meaningful return value. Please refer to the PHP core documentation on constructors. Loading history...
307		* @author Anamd Tihon
308		*/
309		function __construct($question)
310		{
311		$this->question = $question;
312		$this->answer = $question->answer;
313		$this->questionIdent = "QST_" . $question->selectId() ;
314		}
315
316		/**
317		* Start the XML flow.
318		*
319		* This opens the <item> block, with correct attributes.
320		*
321		* @author Amand Tihon <[email protected]>
322		*/
323		function start_item()
324		{
325		return '<item title="' . cleanAttribute(formatExerciseQtiDescription($this->question->selectTitle())) . '" ident="' . $this->questionIdent . '">' . "\n";
326		}
327
328		/**
329		* End the XML flow, closing the </item> tag.
330		*
331		* @author Amand Tihon <[email protected]>
332		*/
333		function end_item()
334		{
335		return "</item>\n";
336		}
337
338		/**
339		* Create the opening, with the question itself.
340		*
341		* This means it opens the <presentation> but doesn't close it, as this is the role of end_presentation().
342		* In between, the export_responses from the subclass should have been called.
343		*
344		* @author Amand Tihon <[email protected]>
345		*/
346		function start_presentation()
347		{
348		return '<presentation label="' . $this->questionIdent . '"><flow>' . "\n"
349		. '<material><mattext>' . formatExerciseQtiDescription($this->question->selectDescription()) . "</mattext></material>\n";
350		}
351
352		/**
353		* End the </presentation> part, opened by export_header.
354		*
355		* @author Amand Tihon <[email protected]>
356		*/
357		function end_presentation()
358		{
359		return "</flow></presentation>\n";
360		}
361
362		/**
363		* Start the response processing, and declare the default variable, SCORE, at 0 in the outcomes.
364		*
365		* @author Amand Tihon <[email protected]>
366		*/
367		function start_processing()
368		{
369		return '<resprocessing><outcomes><decvar vartype="Integer" defaultval="0" /></outcomes>' . "\n";
370		}
371
372		/**
373		* End the response processing part.
374		*
375		* @author Amand Tihon <[email protected]>
376		*/
377		function end_processing()
378		{
379		return "</resprocessing>\n";
380		}
381
382		/**
383		* Export the question as an IMS/QTI Item.
384		*
385		* This is a default behaviour, some classes may want to override this.
386		*
387		* @param $standalone: Boolean stating if it should be exported as a stand-alone question
388		* @return string string, the XML flow for an Item.
389		* @author Amand Tihon <[email protected]>
390		*/
391		function export($standalone = False)
392		{
393		global $charset;
394		$head = $foot = "";
395
396		if ($standalone) {
397		$head = '<?xml version = "1.0" encoding = "'.$charset.'" standalone = "no"?>' . "\n"
398		. '<!DOCTYPE questestinterop SYSTEM "ims_qtiasiv2p1.dtd">' . "\n"
399		. "<questestinterop>\n";
400		$foot = "</questestinterop>\n";
401		}
402
403		return $head
404		. $this->start_item()
405		. $this->start_presentation()
406		. $this->answer->imsExportResponses($this->questionIdent)
407		. $this->end_presentation()
408		. $this->start_processing()
409		. $this->answer->imsExportProcessing($this->questionIdent)
410		. $this->end_processing()
411		. $this->answer->imsExportFeedback($this->questionIdent)
412		. $this->end_item()
413		. $foot;
414		}
415		}
416
417		/**
418		* Send a complete exercise in IMS/QTI format, from its ID
419		*
420		* @param int $exerciseId The exercise to export
421		* @param boolean $standalone Wether it should include XML tag and DTD line.
422		* @return string XML as a string, or an empty string if there's no exercise with given ID.
423		*/
424	View Code Duplication	function export_exercise_to_qti($exerciseId, $standalone = true)
425		{
426		$exercise = new Exercise();
427		if (!$exercise->read($exerciseId)) {
428		return '';
429		}
430		$ims = new ImsSection($exercise);
431		$xml = $ims->export($standalone);
432		return $xml;
433		}
434
435		/**
436		* Returns the XML flow corresponding to one question
437		*
438		* @param int $questionId
439		* @param bool $standalone (ie including XML tag, DTD declaration, etc)
440		* @return string
441		*/
442	View Code Duplication	function export_question_qti($questionId, $standalone = true)
443		{
444		$question = new Ims2Question();
445		$qst = $question->read($questionId);
446		if (!$qst or $qst->type == FREE_ANSWER) {
447		return '';
448		}
449		$question->id = $qst->id;
450		$question->type = $qst->type;
451		$question->question = $qst->question;
452		$question->description = $qst->description;
453		$question->weighting=$qst->weighting;
454		$question->position=$qst->position;
455		$question->picture=$qst->picture;
456		$ims = new ImsAssessmentItem($question);
457
458		return $ims->export($standalone);
459		}
460
461		/**
462		* Clean text like a description
463		**/
464		function formatExerciseQtiDescription($text)
465		{
466		$entities = api_html_entity_decode($text);
467		return htmlspecialchars($entities);
468		}
469
470		/**
471		* Clean titles
472		* @param $text
473		* @return string
474		*/
475		function formatExerciseQtiTitle($text)
476		{
477		return htmlspecialchars($text);
478		}
479
480		/**
481		* @param string $text
482		*/
483		function cleanAttribute($text)
484		{
485		return $text;
486		}
487

chamilo / chamilo-lms

Push — 1.10.x ( 4eb5d1...71e5e5 )

ImsAssessmentItem::ImsAssessmentItem() A

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