Public Member Functions | Data Fields

assSingleChoice Class Reference

Class for single choice questions. More...

Inheritance diagram for assSingleChoice:
Collaboration diagram for assSingleChoice:

Public Member Functions

 assSingleChoice ($title="", $comment="", $author="", $owner=-1, $question="", $output_type=OUTPUT_ORDER)
 assSingleChoice constructor
 isComplete ()
 Returns true, if a single choice question is complete for use.
 fromXML (&$item, $questionpool_id, &$tst_id, &$tst_object, &$question_counter, &$import_mapping)
 Creates a question from a QTI file.
 to_xml ($a_include_header=true, $a_include_binary=true, $a_shuffle=false, $test_output=false, $force_image_references=false)
 Returns a QTI xml representation of the question.
 saveToDb ($original_id="")
 Saves a assSingleChoice object to a database.
 loadFromDb ($question_id)
 Loads a assSingleChoice object from a database.
 duplicate ($for_test=true, $title="", $author="", $owner="")
 Duplicates an assSingleChoiceQuestion.
 copyObject ($target_questionpool, $title="")
 Copies an assSingleChoice object.
 getQuestion ()
 Gets the single choice question.
 setQuestion ($question="")
 Sets the single choice question.
 getOutputType ()
 Gets the single choice output type.
 setOutputType ($output_type=OUTPUT_ORDER)
 Sets the single choice output type.
 addAnswer ($answertext="", $points=0.0, $points_unchecked=0.0, $order=0, $answerimage="")
 Adds a possible answer for a single choice question.
 getAnswerCount ()
 Returns the number of answers.
 getAnswer ($index=0)
 Returns an answer.
 deleteAnswer ($index=0)
 Deletes an answer.
 flushAnswers ()
 Deletes all answers.
 getMaximumPoints ()
 Returns the maximum points, a learner can reach answering the question.
 calculateReachedPoints ($active_id, $pass=NULL)
 Returns the points, a learner has reached answering the question.
 saveWorkingData ($active_id, $pass=NULL)
 Saves the learners input of the question to the database.
 syncWithOriginal ()
 getQuestionType ()
 Returns the question type of the question.
 getAdditionalTableName ()
 Returns the name of the additional question data table in the database.
 getAnswerTableName ()
 Returns the name of the answer table in the database.
 getGraphicalAnswerSetting ()
 setGraphicalAnswerSetting ($a_setting=0)
 setImageFile ($image_filename, $image_tempfilename="")
 Sets the image file.
 deleteImage ($image_filename)
 Deletes an image file.
 duplicateImages ($question_id)
 copyImages ($question_id, $source_questionpool)

Data Fields

 $question
 $answers
 $output_type

Detailed Description

Class for single choice questions.

assSingleChoice is a class for single choice questions.

Author:
Helmut Schottmüller <helmut.schottmueller@mac.com>
Version:
Id:
class.assSingleChoice.php 14646 2007-09-04 10:03:31Z hschottm

class.assSingleChoice.php Assessment

Definition at line 36 of file class.assSingleChoice.php.


Member Function Documentation

assSingleChoice::addAnswer ( answertext = "",
points = 0.0,
points_unchecked = 0.0,
order = 0,
answerimage = "" 
)

Adds a possible answer for a single choice question.

Adds a possible answer for a single choice question. A ASS_AnswerBinaryStateImage object will be created and assigned to the array $this->answers.

Parameters:
string $answertext The answer text
double $points The points for selecting the answer (even negative points can be used)
boolean $state Defines the answer as correct (TRUE) or incorrect (FALSE)
integer $order A possible display order of the answer
double $points The points for not selecting the answer (even negative points can be used) public
See also:
$answers
ASS_AnswerBinaryStateImage

Definition at line 891 of file class.assSingleChoice.php.

References $key, and assQuestion::$points.

Referenced by fromXML().

        {
                $found = -1;
                foreach ($this->answers as $key => $value)
                {
                        if ($value->getOrder() == $order)
                        {
                                $found = $order;
                        }
                }
                include_once "./assessment/classes/class.assAnswerBinaryStateImage.php";
                if ($found >= 0)
                {
                        // Antwort einfügen
                        $answer = new ASS_AnswerBinaryStateImage($answertext, $points, $found, 1, $answerimage);
                        array_push($this->answers, $answer);
                        for ($i = $found + 1; $i < count($this->answers); $i++)
                        {
                                $this->answers[$i] = $this->answers[$i-1];
                        }
                        $this->answers[$found] = $answer;
                }
                else
                {
                        // Anwort anhängen
                        $answer = new ASS_AnswerBinaryStateImage($answertext, $points, count($this->answers), 1, $answerimage);
                        array_push($this->answers, $answer);
                }
        }

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assSingleChoice::assSingleChoice ( title = "",
comment = "",
author = "",
owner = -1,
question = "",
output_type = OUTPUT_ORDER 
)

assSingleChoice constructor

The constructor takes possible arguments an creates an instance of the assSingleChoice object.

Parameters:
string $title A title string to describe the question
string $comment A comment string to describe the question
string $author A string containing the name of the questions author
integer $owner A numerical ID to identify the owner/creator
string $question The question string of the single choice question
integer $output_type The output order of the single choice answers public
See also:
assQuestion:assQuestion()

Definition at line 80 of file class.assSingleChoice.php.

References assQuestion::$author, assQuestion::$comment, $output_type, assQuestion::$owner, $question, assQuestion::$title, and assQuestion::assQuestion().

        {
                $this->assQuestion($title, $comment, $author, $owner);
                $this->question = $question;
                $this->output_type = $output_type;
                $this->answers = array();
        }

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assSingleChoice::calculateReachedPoints ( active_id,
pass = NULL 
)

Returns the points, a learner has reached answering the question.

Returns the points, a learner has reached answering the question The points are calculated from the given answers including checks for all special scoring options in the test container.

Parameters:
integer $user_id The database ID of the learner
integer $test_id The database Id of the test containing the question public

Definition at line 1034 of file class.assSingleChoice.php.

References $data, $key, assQuestion::$points, $query, $result, assQuestion::getId(), and assQuestion::getSolutionMaxPass().

        {
                global $ilDB;
                
                $found_values = array();
                if (is_null($pass))
                {
                        $pass = $this->getSolutionMaxPass($active_id);
                }
                $query = sprintf("SELECT * FROM tst_solutions WHERE active_fi = %s AND question_fi = %s AND pass = %s",
                        $ilDB->quote($active_id . ""),
                        $ilDB->quote($this->getId() . ""),
                        $ilDB->quote($pass . "")
                );
                $result = $ilDB->query($query);
                while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if (strcmp($data->value1, "") != 0)
                        {
                                array_push($found_values, $data->value1);
                        }
                }
                $points = 0;
                foreach ($this->answers as $key => $answer)
                {
                        if (count($found_values) > 0) 
                        {
                                if (in_array($key, $found_values))
                                {
                                        $points += $answer->getPoints();
                                }
                        }
                }

                $points = parent::calculateReachedPoints($active_id, $pass = NULL, $points);
                return $points;
        }

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assSingleChoice::copyImages ( question_id,
source_questionpool 
)

Definition at line 1357 of file class.assSingleChoice.php.

References $ilLog, assQuestion::getImagePath(), and ilUtil::makeDirParents().

        {
                global $ilLog;
                $imagepath = $this->getImagePath();
                $imagepath_original = str_replace("/$this->id/images", "/$question_id/images", $imagepath);
                $imagepath_original = str_replace("/$this->obj_id/", "/$source_questionpool/", $imagepath_original);
                if (!file_exists($imagepath))
                {
                        ilUtil::makeDirParents($imagepath);
                }
                foreach ($this->answers as $answer)
                {
                        $filename = $answer->getImage();
                        if (strlen($filename))
                        {
                                if (!copy($imagepath_original . $filename, $imagepath . $filename))
                                {
                                        $ilLog->write("image could not be duplicated!!!!", $ilLog->ERROR);
                                        $ilLog->write("object: " . print_r($this), $ilLog->ERROR);
                                }
                                if (!copy($imagepath_original . $filename . ".thumb.jpg", $imagepath . $filename . ".thumb.jpg"))
                                {
                                        $ilLog->write("image thumbnail could not be duplicated!!!!", $ilLog->ERROR);
                                        $ilLog->write("object: " . print_r($this), $ilLog->ERROR);
                                }
                        }
                }
        }

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assSingleChoice::copyObject ( target_questionpool,
title = "" 
)

Copies an assSingleChoice object.

Copies an assSingleChoice object

public

Definition at line 790 of file class.assSingleChoice.php.

References assQuestion::$title, assQuestion::_getOriginalId(), and assQuestion::getObjId().

        {
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
                // duplicate the question in database
                $clone = $this;
                include_once ("./assessment/classes/class.assQuestion.php");
                $original_id = assQuestion::_getOriginalId($this->id);
                $clone->id = -1;
                $source_questionpool = $this->getObjId();
                $clone->setObjId($target_questionpool);
                if ($title)
                {
                        $clone->setTitle($title);
                }
                $clone->saveToDb();

                // copy question page content
                $clone->copyPageOfQuestion($original_id);
                // copy XHTML media objects
                $clone->copyXHTMLMediaObjectsOfQuestion($original_id);
                // duplicate the image
                $clone->copyImages($original_id, $source_questionpool);

                return $clone->id;
        }

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assSingleChoice::deleteAnswer ( index = 0  ) 

Deletes an answer.

Deletes an answer with a given index. The index of the first answer is 0, the index of the second answer is 1 and so on.

Parameters:
integer $index A nonnegative index of the n-th answer public
See also:
$answers

Definition at line 971 of file class.assSingleChoice.php.

References deleteImage().

        {
                if ($index < 0) return;
                if (count($this->answers) < 1) return;
                if ($index >= count($this->answers)) return;
                $answer = $this->answers[$index];
                if (strlen($answer->getImage())) $this->deleteImage($answer->getImage());
                unset($this->answers[$index]);
                $this->answers = array_values($this->answers);
                for ($i = 0; $i < count($this->answers); $i++)
                {
                        if ($this->answers[$i]->getOrder() > $index)
                        {
                                $this->answers[$i]->setOrder($i);
                        }
                }
        }

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assSingleChoice::deleteImage ( image_filename  ) 

Deletes an image file.

Deletes an image file

Parameters:
string $image_filename Name of the image file to delete private

Definition at line 1321 of file class.assSingleChoice.php.

References assQuestion::getImagePath().

Referenced by deleteAnswer().

        {
                $imagepath = $this->getImagePath();
                unlink($imagepath . $image_filename);
                $thumbpath = $imagepath . $image_filename . "." . "thumb.jpg";
                unlink($thumbpath);
        }

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assSingleChoice::duplicate ( for_test = true,
title = "",
author = "",
owner = "" 
)

Duplicates an assSingleChoiceQuestion.

Duplicates an assSingleChoiceQuestion

public

Definition at line 737 of file class.assSingleChoice.php.

References assQuestion::$author, assQuestion::$owner, assQuestion::$title, assQuestion::_getOriginalId(), and assQuestion::getId().

Referenced by fromXML().

        {
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
                // duplicate the question in database
                $this_id = $this->getId();
                $clone = $this;
                include_once ("./assessment/classes/class.assQuestion.php");
                $original_id = assQuestion::_getOriginalId($this->id);
                $clone->id = -1;
                if ($title)
                {
                        $clone->setTitle($title);
                }

                if ($author)
                {
                        $clone->setAuthor($author);
                }
                if ($owner)
                {
                        $clone->setOwner($owner);
                }

                if ($for_test)
                {
                        $clone->saveToDb($original_id);
                }
                else
                {
                        $clone->saveToDb();
                }

                // copy question page content
                $clone->copyPageOfQuestion($this_id);
                // copy XHTML media objects
                $clone->copyXHTMLMediaObjectsOfQuestion($this_id);
                // duplicate the images
                $clone->duplicateImages($this_id);

                return $clone->id;
        }

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assSingleChoice::duplicateImages ( question_id  ) 

Definition at line 1329 of file class.assSingleChoice.php.

References $ilLog, assQuestion::getImagePath(), and ilUtil::makeDirParents().

        {
                global $ilLog;
                $imagepath = $this->getImagePath();
                $imagepath_original = str_replace("/$this->id/images", "/$question_id/images", $imagepath);
                if (!file_exists($imagepath))
                {
                        ilUtil::makeDirParents($imagepath);
                }
                foreach ($this->answers as $answer)
                {
                        $filename = $answer->getImage();
                        if (strlen($filename))
                        {
                                if (!copy($imagepath_original . $filename, $imagepath . $filename))
                                {
                                        $ilLog->write("image could not be duplicated!!!!", $ilLog->ERROR);
                                        $ilLog->write("object: " . print_r($this), $ilLog->ERROR);
                                }
                                if (!copy($imagepath_original . $filename . ".thumb.jpg", $imagepath . $filename . ".thumb.jpg"))
                                {
                                        $ilLog->write("image thumbnail could not be duplicated!!!!", $ilLog->ERROR);
                                        $ilLog->write("object: " . print_r($this), $ilLog->ERROR);
                                }
                        }
                }
        }

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assSingleChoice::flushAnswers (  ) 

Deletes all answers.

Deletes all answers

public

See also:
$answers

Definition at line 997 of file class.assSingleChoice.php.

        {
                $this->answers = array();
        }

assSingleChoice::fromXML ( &$  item,
questionpool_id,
&$  tst_id,
&$  tst_object,
&$  question_counter,
&$  import_mapping 
)

Creates a question from a QTI file.

Receives parameters from a QTI parser and creates a valid ILIAS question object

Parameters:
object $item The QTI item object
integer $questionpool_id The id of the parent questionpool
integer $tst_id The id of the parent test if the question is part of a test
object $tst_object A reference to the parent test object
integer $question_counter A reference to a question counter to count the questions of an imported question pool
array $import_mapping An array containing references to included ILIAS objects public

Definition at line 132 of file class.assSingleChoice.php.

References $_SESSION, $answers, $key, assQuestion::$shuffle, ilObjQuestionPool::_getImportDirectory(), ilObjTest::_getImportDirectory(), ilRTE::_replaceMediaObjectImageSrc(), ilObjMediaObject::_saveTempFileAsMediaObject(), ilObjMediaObject::_saveUsage(), addAnswer(), ilUtil::convertImage(), duplicate(), getContent(), assQuestion::getId(), assQuestion::getImagePath(), getQuestion(), ilUtil::makeDirParents(), assQuestion::QTIMaterialToString(), saveToDb(), assQuestion::setAuthor(), assQuestion::setComment(), assQuestion::setEstimatedWorkingTime(), assQuestion::setObjId(), assQuestion::setOwner(), setQuestion(), assQuestion::setShuffle(), assQuestion::setSuggestedSolution(), and assQuestion::setTitle().

        {
                global $ilUser;

                // empty session variable for imported xhtml mobs
                unset($_SESSION["import_mob_xhtml"]);
                $presentation = $item->getPresentation(); 
                $duration = $item->getDuration();
                $shuffle = 0;
                $now = getdate();
                $created = sprintf("%04d%02d%02d%02d%02d%02d", $now['year'], $now['mon'], $now['mday'], $now['hours'], $now['minutes'], $now['seconds']);
                $answers = array();
                foreach ($presentation->order as $entry)
                {
                        switch ($entry["type"])
                        {
                                case "response":
                                        $response = $presentation->response[$entry["index"]];
                                        $rendertype = $response->getRenderType();
                                        switch (strtolower(get_class($response->getRenderType())))
                                        {
                                                case "ilqtirenderchoice":
                                                        $shuffle = $rendertype->getShuffle();
                                                        $answerorder = 0;
                                                        $foundimage = FALSE;
                                                        foreach ($rendertype->response_labels as $response_label)
                                                        {
                                                                $ident = $response_label->getIdent();
                                                                $answertext = "";
                                                                $answerimage = array();
                                                                foreach ($response_label->material as $mat)
                                                                {
                                                                        for ($m = 0; $m < $mat->getMaterialCount(); $m++)
                                                                        {
                                                                                $foundmat = $mat->getMaterial($m);
                                                                                if (strcmp($foundmat["type"], "mattext") == 0)
                                                                                {
                                                                                        $answertext .= $foundmat["material"]->getContent();
                                                                                }
                                                                                if (strcmp($foundmat["type"], "matimage") == 0)
                                                                                {
                                                                                        $foundimage = TRUE;
                                                                                        $answerimage = array(
                                                                                                "imagetype" => $foundmat["material"]->getImageType(),
                                                                                                "label" => $foundmat["material"]->getLabel(),
                                                                                                "content" => $foundmat["material"]->getContent()
                                                                                        );
                                                                                }
                                                                        }
                                                                }
                                                                $answers[$ident] = array(
                                                                        "answertext" => $answertext,
                                                                        "imagefile" => $answerimage,
                                                                        "points" => 0,
                                                                        "answerorder" => $answerorder++,
                                                                        "points_unchecked" => 0,
                                                                        "action" => ""
                                                                );
                                                        }
                                                        break;
                                        }
                                        break;
                        }
                }
                $responses = array();
                foreach ($item->resprocessing as $resprocessing)
                {
                        foreach ($resprocessing->respcondition as $respcondition)
                        {
                                $ident = "";
                                $correctness = 1;
                                $conditionvar = $respcondition->getConditionvar();
                                foreach ($conditionvar->order as $order)
                                {
                                        switch ($order["field"])
                                        {
                                                case "arr_not":
                                                        $correctness = 0;
                                                        break;
                                                case "varequal":
                                                        $ident = $conditionvar->varequal[$order["index"]]->getContent();
                                                        break;
                                        }
                                }
                                foreach ($respcondition->setvar as $setvar)
                                {
                                        if (strcmp($ident, "") != 0)
                                        {
                                                if ($correctness)
                                                {
                                                        $answers[$ident]["action"] = $setvar->getAction();
                                                        $answers[$ident]["points"] = $setvar->getContent();
                                                }
                                                else
                                                {
                                                        $answers[$ident]["action"] = $setvar->getAction();
                                                        $answers[$ident]["points_unchecked"] = $setvar->getContent();
                                                }
                                        }
                                }
                        }
                }
                $this->setTitle($item->getTitle());
                $this->setComment($item->getComment());
                $this->setAuthor($item->getAuthor());
                $this->setOwner($ilUser->getId());
                $this->setQuestion($this->QTIMaterialToString($item->getQuestiontext()));
                $this->setObjId($questionpool_id);
                $this->setEstimatedWorkingTime($duration["h"], $duration["m"], $duration["s"]);
                $this->setShuffle($shuffle);
                foreach ($answers as $answer)
                {
                        $this->addAnswer($answer["answertext"], $answer["points"], $answer["points_unchecked"], $answer["answerorder"], $answer["imagefile"]["label"]);
                }
                $this->saveToDb();
                foreach ($answers as $answer)
                {
                        if (is_array($answer["imagefile"]) && (count($answer["imagefile"]) > 0))
                        {
                                $image =& base64_decode($answer["imagefile"]["content"]);
                                $imagepath = $this->getImagePath();
                                include_once "./classes/class.ilUtil.php";
                                if (!file_exists($imagepath))
                                {
                                        ilUtil::makeDirParents($imagepath);
                                }
                                $imagepath .=  $answer["imagefile"]["label"];
                                $fh = fopen($imagepath, "wb");
                                if ($fh == false)
                                {
//                                                                      global $ilErr;
//                                                                      $ilErr->raiseError($this->lng->txt("error_save_image_file") . ": $php_errormsg", $ilErr->MESSAGE);
//                                                                      return;
                                }
                                else
                                {
                                        $imagefile = fwrite($fh, $image);
                                        fclose($fh);
                                }
                                // create thumbnail file
                                $thumbpath = $imagepath . "." . "thumb.jpg";
                                ilUtil::convertImage($imagepath, $thumbpath, "JPEG", 100);
                        }
                }
                // handle the import of media objects in XHTML code
                if (is_array($_SESSION["import_mob_xhtml"]))
                {
                        include_once "./content/classes/Media/class.ilObjMediaObject.php";
                        include_once "./Services/RTE/classes/class.ilRTE.php";
                        foreach ($_SESSION["import_mob_xhtml"] as $mob)
                        {
                                if ($tst_id > 0)
                                {
                                        include_once "./assessment/classes/class.ilObjTest.php";
                                        $importfile = ilObjTest::_getImportDirectory() . "/" . $_SESSION["tst_import_subdir"] . "/" . $mob["uri"];
                                }
                                else
                                {
                                        include_once "./assessment/classes/class.ilObjQuestionPool.php";
                                        $importfile = ilObjQuestionPool::_getImportDirectory() . "/" . $_SESSION["qpl_import_subdir"] . "/" . $mob["uri"];
                                }
                                $media_object =& ilObjMediaObject::_saveTempFileAsMediaObject(basename($importfile), $importfile, FALSE);
                                ilObjMediaObject::_saveUsage($media_object->getId(), "qpl:html", $this->getId());
                                $this->setQuestion(ilRTE::_replaceMediaObjectImageSrc(str_replace("src=\"" . $mob["mob"] . "\"", "src=\"" . "il_" . IL_INST_ID . "_mob_" . $media_object->getId() . "\"", $this->getQuestion()), 1));
                                foreach ($this->answers as $key => $value)
                                {
                                        $answer_obj = $this->answers[$key];
                                        $answer_obj->setAnswertext(ilRTE::_replaceMediaObjectImageSrc(str_replace("src=\"" . $mob["mob"] . "\"", "src=\"" . "il_" . IL_INST_ID . "_mob_" . $media_object->getId() . "\"", $answer_obj->getAnswertext()), 1));
                                }
                        }
                        $this->saveToDb();
                }
                if (count($item->suggested_solutions))
                {
                        foreach ($item->suggested_solutions as $suggested_solution)
                        {
                                $this->setSuggestedSolution($suggested_solution["solution"]->getContent(), $suggested_solution["gap_index"], true);
                        }
                        $this->saveToDb();
                }
                if ($tst_id > 0)
                {
                        $q_1_id = $this->getId();
                        $question_id = $this->duplicate(true);
                        $tst_object->questions[$question_counter++] = $question_id;
                        $import_mapping[$item->getIdent()] = array("pool" => $q_1_id, "test" => $question_id);
                }
                else
                {
                        $import_mapping[$item->getIdent()] = array("pool" => $this->getId(), "test" => 0);
                }
                //$ilLog->write(strftime("%D %T") . ": finished import multiple choice question (single response)");
        }

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assSingleChoice::getAdditionalTableName (  ) 

Returns the name of the additional question data table in the database.

Returns the name of the additional question data table in the database

Returns:
string The additional table name public

Reimplemented from assQuestion.

Definition at line 1231 of file class.assSingleChoice.php.

        {
                return "qpl_question_singlechoice";
        }

assSingleChoice::getAnswer ( index = 0  ) 

Returns an answer.

Returns an answer with a given index. The index of the first answer is 0, the index of the second answer is 1 and so on.

Parameters:
integer $index A nonnegative index of the n-th answer
Returns:
object ASS_AnswerBinaryStateImage-Object containing the answer public
See also:
$answers

Definition at line 952 of file class.assSingleChoice.php.

        {
                if ($index < 0) return NULL;
                if (count($this->answers) < 1) return NULL;
                if ($index >= count($this->answers)) return NULL;

                return $this->answers[$index];
        }

assSingleChoice::getAnswerCount (  ) 

Returns the number of answers.

Returns the number of answers

Returns:
integer The number of answers of the multiple choice question public
See also:
$answers

Definition at line 936 of file class.assSingleChoice.php.

        {
                return count($this->answers);
        }

assSingleChoice::getAnswerTableName (  ) 

Returns the name of the answer table in the database.

Returns the name of the answer table in the database

Returns:
string The answer table name public

Reimplemented from assQuestion.

Definition at line 1244 of file class.assSingleChoice.php.

        {
                return "qpl_answer_singlechoice";
        }

assSingleChoice::getGraphicalAnswerSetting (  ) 

Definition at line 1249 of file class.assSingleChoice.php.

        {
                global $ilUser;

                $graphicalAnswerSetting = $ilUser->getPref("graphicalAnswerSetting");
                if ($graphicalAnswerSetting != 1)
                {
                        $graphicalAnswerSetting = 0;
                }
                return $graphicalAnswerSetting;
        }

assSingleChoice::getMaximumPoints (  ) 

Returns the maximum points, a learner can reach answering the question.

Returns the maximum points, a learner can reach answering the question

public

See also:
$points

Reimplemented from assQuestion.

Definition at line 1010 of file class.assSingleChoice.php.

References $key, and assQuestion::$points.

Referenced by isComplete(), saveToDb(), and syncWithOriginal().

        {
                $points = 0;
                foreach ($this->answers as $key => $value) 
                {
                        if ($value->getPoints() > $points)
                        {
                                $points = $value->getPoints();
                        }
                }
                return $points;
        }

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assSingleChoice::getOutputType (  ) 

Gets the single choice output type.

Gets the single choice output type which is either OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1).

Returns:
integer The output type of the assSingleChoice object public
See also:
$output_type

Reimplemented from assQuestion.

Definition at line 857 of file class.assSingleChoice.php.

        {
                return $this->output_type;
        }

assSingleChoice::getQuestion (  ) 

Gets the single choice question.

Gets the question string of the assSingleChoice object

Returns:
string The question string of the assSingleChoice object public
See also:
$question

Definition at line 829 of file class.assSingleChoice.php.

Referenced by fromXML(), and to_xml().

        {
                return $this->question;
        }

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assSingleChoice::getQuestionType (  ) 

Returns the question type of the question.

Returns the question type of the question

Returns:
integer The question type of the question public

Definition at line 1217 of file class.assSingleChoice.php.

        {
                $question_type = 1;
                return $question_type;
        }

assSingleChoice::isComplete (  ) 

Returns true, if a single choice question is complete for use.

Returns true, if a single choice question is complete for use

Returns:
boolean True, if the single choice question is complete for use, otherwise false public

Reimplemented from assQuestion.

Definition at line 103 of file class.assSingleChoice.php.

References getMaximumPoints().

Referenced by saveToDb(), and syncWithOriginal().

        {
                if (($this->title) and ($this->author) and ($this->question) and (count($this->answers)) and ($this->getMaximumPoints() > 0))
                {
                        foreach ($this->answers as $answer)
                        {
                                if ((strlen($answer->getAnswertext()) == 0) && (strlen($answer->getImage()) == 0)) return false;
                        }
                        return true;
                }
                else
                {
                        return false;
                }
        }

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assSingleChoice::loadFromDb ( question_id  ) 

Loads a assSingleChoice object from a database.

Loads a assSingleChoice object from a database

Parameters:
object $db A pear DB object
integer $question_id A unique key which defines the multiple choice test in the database public

Reimplemented from assQuestion.

Definition at line 676 of file class.assSingleChoice.php.

References $data, $query, $result, ilRTE::_replaceMediaObjectImageSrc(), assQuestion::getImagePath(), assQuestion::setEstimatedWorkingTime(), setGraphicalAnswerSetting(), and assQuestion::setShuffle().

        {
                global $ilDB;

                $hasimages = 0;
    $query = sprintf("SELECT qpl_questions.*, qpl_question_singlechoice.* FROM qpl_questions, qpl_question_singlechoice WHERE question_id = %s AND qpl_questions.question_id = qpl_question_singlechoice.question_fi",
                $ilDB->quote($question_id));
                $result = $ilDB->query($query);
                if (strcmp(strtolower(get_class($result)), db_result) == 0)
                {
                        if ($result->numRows() == 1)
                        {
                                $data = $result->fetchRow(DB_FETCHMODE_OBJECT);
                                $this->id = $question_id;
                                $this->title = $data->title;
                                $this->comment = $data->comment;
                                $this->solution_hint = $data->solution_hint;
                                $this->original_id = $data->original_id;
                                $this->obj_id = $data->obj_fi;
                                $this->author = $data->author;
                                $this->owner = $data->owner;
                                $this->points = $data->points;
                                include_once("./Services/RTE/classes/class.ilRTE.php");
                                $this->question = ilRTE::_replaceMediaObjectImageSrc($data->question_text, 1);
                                $this->setShuffle($data->shuffle);
                                $this->setEstimatedWorkingTime(substr($data->working_time, 0, 2), substr($data->working_time, 3, 2), substr($data->working_time, 6, 2));
                        }

                        $query = sprintf("SELECT * FROM qpl_answer_singlechoice WHERE question_fi = %s ORDER BY aorder ASC",
                                $ilDB->quote($question_id));

                        $result = $ilDB->query($query);

                        include_once "./assessment/classes/class.assAnswerBinaryStateImage.php";
                        if (strcmp(strtolower(get_class($result)), db_result) == 0)
                        {
                                while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
                                {
                                        $imagefilename = $this->getImagePath() . $data->imagefile;
                                        if (!@file_exists($imagefilename))
                                        {
                                                $data->imagefile = "";
                                        }
                                        include_once("./Services/RTE/classes/class.ilRTE.php");
                                        $data->answertext = ilRTE::_replaceMediaObjectImageSrc($data->answertext, 1);
                                        if (strlen($data->imagefile)) $hasimages = 1;
                                        array_push($this->answers, new ASS_AnswerBinaryStateImage($data->answertext, $data->points, $data->aorder, 1, $data->imagefile));
                                }
                        }
                }
                $this->setGraphicalAnswerSetting($hasimages);
                parent::loadFromDb($question_id);
        }

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assSingleChoice::saveToDb ( original_id = ""  ) 

Saves a assSingleChoice object to a database.

Saves a assSingleChoice object to a database (experimental)

Parameters:
object $db A pear DB object public

Reimplemented from assQuestion.

Definition at line 552 of file class.assSingleChoice.php.

References $key, $query, $result, ilRTE::_cleanupMediaObjectUsage(), ilRTE::_replaceMediaObjectImageSrc(), assQuestion::createPageObject(), assQuestion::getEstimatedWorkingTime(), assQuestion::getId(), getMaximumPoints(), assQuestion::getTestId(), assQuestion::insertIntoTest(), and isComplete().

Referenced by fromXML().

        {
                global $ilDB;

                $complete = 0;
                if ($this->isComplete())
                {
                        $complete = 1;
                }
                $estw_time = $this->getEstimatedWorkingTime();
                $estw_time = sprintf("%02d:%02d:%02d", $estw_time['h'], $estw_time['m'], $estw_time['s']);

                if ($original_id)
                {
                        $original_id = $ilDB->quote($original_id);
                }
                else
                {
                        $original_id = "NULL";
                }

                include_once("./Services/RTE/classes/class.ilRTE.php");
                $combinedtext = $this->question;
                
                if ($this->id == -1)
                {
                        // Neuen Datensatz schreiben
                        $now = getdate();
                        $created = sprintf("%04d%02d%02d%02d%02d%02d", $now['year'], $now['mon'], $now['mday'], $now['hours'], $now['minutes'], $now['seconds']);
                        $query = sprintf("INSERT INTO qpl_questions (question_id, question_type_fi, obj_fi, title, comment, author, owner, question_text, points, working_time, complete, created, original_id, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, NULL)",
                                $ilDB->quote("1"),
                                $ilDB->quote($this->obj_id),
                                $ilDB->quote($this->title),
                                $ilDB->quote($this->comment),
                                $ilDB->quote($this->author),
                                $ilDB->quote($this->owner),
                                $ilDB->quote(ilRTE::_replaceMediaObjectImageSrc($this->question, 0)),
                                $ilDB->quote($this->getMaximumPoints() . ""),
                                $ilDB->quote($estw_time),
                                $ilDB->quote("$complete"),
                                $ilDB->quote($created),
                                $original_id
                        );
                        $result = $ilDB->query($query);
                        
                        if ($result == DB_OK)
                        {
                                $this->id = $ilDB->getLastInsertId();
                                $query = sprintf("INSERT INTO qpl_question_singlechoice (question_fi, shuffle) VALUES (%s, %s)",
                                        $ilDB->quote($this->id . ""),
                                        $ilDB->quote("$this->shuffle")
                                );
                                $ilDB->query($query);

                                // create page object of question
                                $this->createPageObject();

                                if ($this->getTestId() > 0)
                                {
                                $this->insertIntoTest($this->getTestId());
                                }
                        }
                }
                else
                {
                        // Vorhandenen Datensatz aktualisieren
                        $query = sprintf("UPDATE qpl_questions SET obj_fi = %s, title = %s, comment = %s, author = %s, question_text = %s, points = %s, working_time=%s, complete = %s WHERE question_id = %s",
                                $ilDB->quote($this->obj_id. ""),
                                $ilDB->quote($this->title),
                                $ilDB->quote($this->comment),
                                $ilDB->quote($this->author),
                                $ilDB->quote(ilRTE::_replaceMediaObjectImageSrc($this->question, 0)),
                                $ilDB->quote($this->getMaximumPoints() . ""),
                                $ilDB->quote($estw_time),
                                $ilDB->quote("$complete"),
                                $ilDB->quote($this->id)
                        );
                        $result = $ilDB->query($query);
                        $query = sprintf("UPDATE qpl_question_singlechoice SET shuffle = %s WHERE question_fi = %s",
                                $ilDB->quote("$this->shuffle"),
                                $ilDB->quote($this->id . "")
                        );
                        $result = $ilDB->query($query);
                }
                if ($result == DB_OK)
                {
                        // Antworten schreiben
                        // alte Antworten löschen
                        $query = sprintf("DELETE FROM qpl_answer_singlechoice WHERE question_fi = %s",
                                $ilDB->quote($this->id)
                        );
                        $result = $ilDB->query($query);

                        // Anworten wegschreiben
                        foreach ($this->answers as $key => $value)
                        {
                                $answer_obj = $this->answers[$key];
                                $query = sprintf("INSERT INTO qpl_answer_singlechoice (answer_id, question_fi, answertext, points, aorder, imagefile) VALUES (NULL, %s, %s, %s, %s, %s)",
                                        $ilDB->quote($this->id),
                                        $ilDB->quote(ilRTE::_replaceMediaObjectImageSrc($answer_obj->getAnswertext(), 0)),
                                        $ilDB->quote($answer_obj->getPoints() . ""),
                                        $ilDB->quote($answer_obj->getOrder() . ""),
                                        $ilDB->quote($answer_obj->getImage() . "")
                                );
                                $combinedtext .= $answer_obj->getAnswertext();
                                $answer_result = $ilDB->query($query);
                        }
                }
                // cleanup RTE images which are not inserted into the question text
                ilRTE::_cleanupMediaObjectUsage($combinedtext, "qpl:html",
                        $this->getId());

                parent::saveToDb($original_id);
        }

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assSingleChoice::saveWorkingData ( active_id,
pass = NULL 
)

Saves the learners input of the question to the database.

Saves the learners input of the question to the database

Parameters:
integer $test_id The database id of the test containing this question
Returns:
boolean Indicates the save status (true if saved successful, false otherwise) public
See also:
$answers

Reimplemented from assQuestion.

Definition at line 1082 of file class.assSingleChoice.php.

References $_POST, $query, $result, $row, ilObjAssessmentFolder::_enabledAssessmentLogging(), ilObjAssessmentFolder::_getLogLanguage(), ilObjTest::_getPass(), assQuestion::getId(), and assQuestion::logAction().

        {
                global $ilDB;
                global $ilUser;

                include_once "./assessment/classes/class.ilObjTest.php";
                $activepass = ilObjTest::_getPass($active_id);
                $entered_values = 0;

                $query = sprintf("SELECT * FROM tst_solutions WHERE active_fi = %s AND question_fi = %s AND pass = %s",
                        $ilDB->quote($active_id . ""),
                        $ilDB->quote($this->getId() . ""),
                        $ilDB->quote($activepass . "")
                );
                $result = $ilDB->query($query);
                $row = $result->fetchRow(DB_FETCHMODE_OBJECT);
                $update = $row->solution_id;
                if ($update)
                {
                        if (strlen($_POST["multiple_choice_result"]))
                        {
                                $query = sprintf("UPDATE tst_solutions SET value1 = %s WHERE solution_id = %s",
                                        $ilDB->quote($_POST["multiple_choice_result"]),
                                        $ilDB->quote($update)
                                );
                                $result = $ilDB->query($query);
                                $entered_values++;
                        }
                        else
                        {
                                $query = sprintf("DELETE FROM tst_solutions WHERE solution_id = %s",
                                        $ilDB->quote($update)
                                );
                                $result = $ilDB->query($query);
                        }
                }
                else
                {
                        if (strlen($_POST["multiple_choice_result"]))
                        {
                                $query = sprintf("INSERT INTO tst_solutions (solution_id, active_fi, question_fi, value1, value2, pass, TIMESTAMP) VALUES (NULL, %s, %s, %s, NULL, %s, NULL)",
                                        $ilDB->quote($active_id),
                                        $ilDB->quote($this->getId()),
                                        $ilDB->quote($_POST["multiple_choice_result"]),
                                        $ilDB->quote($activepass . "")
                                );
                                $result = $ilDB->query($query);
                                $entered_values++;
                        }
                }
                if ($entered_values)
                {
                        include_once ("./classes/class.ilObjAssessmentFolder.php");
                        if (ilObjAssessmentFolder::_enabledAssessmentLogging())
                        {
                                $this->logAction($this->lng->txtlng("assessment", "log_user_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
                        }
                }
                else
                {
                        include_once ("./classes/class.ilObjAssessmentFolder.php");
                        if (ilObjAssessmentFolder::_enabledAssessmentLogging())
                        {
                                $this->logAction($this->lng->txtlng("assessment", "log_user_not_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
                        }
                }
    parent::saveWorkingData($active_id, $pass);
                return true;
        }

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assSingleChoice::setGraphicalAnswerSetting ( a_setting = 0  ) 

Definition at line 1261 of file class.assSingleChoice.php.

Referenced by loadFromDb().

        {
                global $ilUser;
                $ilUser->writePref("graphicalAnswerSetting", $a_setting);
        }

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assSingleChoice::setImageFile ( image_filename,
image_tempfilename = "" 
)

Sets the image file.

Sets the image file and uploads the image to the object's image directory.

Parameters:
string $image_filename Name of the original image file
string $image_tempfilename Name of the temporary uploaded image file
Returns:
integer An errorcode if the image upload fails, 0 otherwise public

Definition at line 1277 of file class.assSingleChoice.php.

References $result, ilUtil::convertImage(), assQuestion::getImagePath(), ilObjMediaObject::getMimeType(), ilUtil::makeDirParents(), and ilUtil::moveUploadedFile().

        {
                $result = 0;
                if (!empty($image_tempfilename))
                {
                        $image_filename = str_replace(" ", "_", $image_filename);
                        $imagepath = $this->getImagePath();
                        if (!file_exists($imagepath))
                        {
                                ilUtil::makeDirParents($imagepath);
                        }
                        //if (!move_uploaded_file($image_tempfilename, $imagepath . $image_filename))
                        if (!ilUtil::moveUploadedFile($image_tempfilename, $image_filename, $imagepath.$image_filename))
                        {
                                $result = 2;
                        }
                        else
                        {
                                include_once "./content/classes/Media/class.ilObjMediaObject.php";
                                $mimetype = ilObjMediaObject::getMimeType($imagepath . $image_filename);
                                if (!preg_match("/^image/", $mimetype))
                                {
                                        unlink($imagepath . $image_filename);
                                        $result = 1;
                                }
                                else
                                {
                                        // create thumbnail file
                                        $thumbpath = $imagepath . $image_filename . "." . "thumb.jpg";
                                        ilUtil::convertImage($imagepath.$image_filename, $thumbpath, "JPEG", 100);
                                }
                        }
                }
                return $result;
        }

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assSingleChoice::setOutputType ( output_type = OUTPUT_ORDER  ) 

Sets the single choice output type.

Sets the output type of the assSingleChoice object

Parameters:
integer $output_type A nonnegative integer value specifying the output type. It is OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1). public
See also:
$response

Reimplemented from assQuestion.

Definition at line 871 of file class.assSingleChoice.php.

References $output_type.

        {
                $this->output_type = $output_type;
        }

assSingleChoice::setQuestion ( question = ""  ) 

Sets the single choice question.

Sets the question string of the assSingleChoice object

Parameters:
string $question A string containing the multiple choice question public
See also:
$question

Definition at line 843 of file class.assSingleChoice.php.

References $question.

Referenced by fromXML().

        {
                $this->question = $question;
        }

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assSingleChoice::syncWithOriginal (  ) 

Reimplemented from assQuestion.

Definition at line 1152 of file class.assSingleChoice.php.

References $key, $query, $result, assQuestion::getEstimatedWorkingTime(), getMaximumPoints(), and isComplete().

        {
                global $ilDB;
                
                if ($this->original_id)
                {
                        $complete = 0;
                        if ($this->isComplete())
                        {
                                $complete = 1;
                        }
                        $estw_time = $this->getEstimatedWorkingTime();
                        $estw_time = sprintf("%02d:%02d:%02d", $estw_time['h'], $estw_time['m'], $estw_time['s']);
        
                        $query = sprintf("UPDATE qpl_questions SET obj_fi = %s, title = %s, comment = %s, author = %s, question_text = %s, points = %s, working_time=%s, complete = %s WHERE question_id = %s",
                                $ilDB->quote($this->obj_id. ""),
                                $ilDB->quote($this->title. ""),
                                $ilDB->quote($this->comment. ""),
                                $ilDB->quote($this->author. ""),
                                $ilDB->quote($this->question. ""),
                                $ilDB->quote($this->getMaximumPoints() . ""),
                                $ilDB->quote($estw_time. ""),
                                $ilDB->quote($complete. ""),
                                $ilDB->quote($this->original_id. "")
                        );
                        $result = $ilDB->query($query);
                        $query = sprintf("UPDATE qpl_question_singlechoice SET shuffle = %s WHERE question_fi = %s",
                                $ilDB->quote($this->shuffle. ""),
                                $ilDB->quote($this->original_id . "")
                        );
                        $result = $ilDB->query($query);

                        if ($result == DB_OK)
                        {
                                // write answers
                                // delete old answers
                                $query = sprintf("DELETE FROM qpl_answer_singlechoice WHERE question_fi = %s",
                                        $ilDB->quote($this->original_id)
                                );
                                $result = $ilDB->query($query);
                                $points_unchecked = 0;
                                foreach ($this->answers as $key => $value)
                                {
                                        $answer_obj = $this->answers[$key];
                                        $query = sprintf("INSERT INTO qpl_answer_singlechoice (answer_id, question_fi, answertext, points, aorder) VALUES (NULL, %s, %s, %s, %s)",
                                                $ilDB->quote($this->original_id. ""),
                                                $ilDB->quote($answer_obj->getAnswertext(). ""),
                                                $ilDB->quote($answer_obj->getPoints() . ""),
                                                $ilDB->quote($answer_obj->getOrder() . "")
                                        );
                                        $answer_result = $ilDB->query($query);
                                }
                        }
                        parent::syncWithOriginal();
                }
        }

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assSingleChoice::to_xml ( 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 public

Definition at line 335 of file class.assSingleChoice.php.

References $pos, assQuestion::addQTIMaterial(), assQuestion::getAuthor(), assQuestion::getComment(), assQuestion::getEstimatedWorkingTime(), assQuestion::getImagePath(), assQuestion::getImagePathWeb(), getQuestion(), assQuestion::getShuffle(), assQuestion::getSuggestedSolution(), assQuestion::getTitle(), and assQuestion::pcArrayShuffle().

        {
                include_once("./classes/class.ilXmlWriter.php");
                $a_xml_writer = new ilXmlWriter;
                // set xml header
                $a_xml_writer->xmlHeader();
                $a_xml_writer->xmlStartTag("questestinterop");
                $attrs = array(
                        "ident" => "il_".IL_INST_ID."_qst_".$this->getId(),
                        "title" => $this->getTitle()
                );
                $a_xml_writer->xmlStartTag("item", $attrs);
                // add question description
                $a_xml_writer->xmlElement("qticomment", NULL, $this->getComment());
                // add estimated working time
                $workingtime = $this->getEstimatedWorkingTime();
                $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
                $a_xml_writer->xmlElement("duration", NULL, $duration);
                // add ILIAS specific metadata
                $a_xml_writer->xmlStartTag("itemmetadata");
                $a_xml_writer->xmlStartTag("qtimetadata");
                $a_xml_writer->xmlStartTag("qtimetadatafield");
                $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
                $a_xml_writer->xmlElement("fieldentry", NULL, $this->ilias->getSetting("ilias_version"));
                $a_xml_writer->xmlEndTag("qtimetadatafield");
                $a_xml_writer->xmlStartTag("qtimetadatafield");
                $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
                $a_xml_writer->xmlElement("fieldentry", NULL, SINGLE_CHOICE_QUESTION_IDENTIFIER);
                $a_xml_writer->xmlEndTag("qtimetadatafield");
                $a_xml_writer->xmlStartTag("qtimetadatafield");
                $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
                $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAuthor());
                $a_xml_writer->xmlEndTag("qtimetadatafield");
                $a_xml_writer->xmlEndTag("qtimetadata");
                $a_xml_writer->xmlEndTag("itemmetadata");

                // PART I: qti presentation
                $attrs = array(
                        "label" => $this->getTitle()
                );
                $a_xml_writer->xmlStartTag("presentation", $attrs);
                // add flow to presentation
                $a_xml_writer->xmlStartTag("flow");
                // add material with question text to presentation
                $this->addQTIMaterial($a_xml_writer, $this->getQuestion());
                // add answers to presentation
                $attrs = array();
                $attrs = array(
                        "ident" => "MCSR",
                        "rcardinality" => "Single"
                );
                $a_xml_writer->xmlStartTag("response_lid", $attrs);
                $solution = $this->getSuggestedSolution(0);
                if (count($solution))
                {
                        if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $solution["internal_link"], $matches))
                        {
                                $a_xml_writer->xmlStartTag("material");
                                $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
                                if (strcmp($matches[1], "") != 0)
                                {
                                        $intlink = $solution["internal_link"];
                                }
                                $attrs = array(
                                        "label" => "suggested_solution"
                                );
                                $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
                                $a_xml_writer->xmlEndTag("material");
                        }
                }
                // shuffle output
                $attrs = array();
                if ($this->getShuffle())
                {
                        $attrs = array(
                                "shuffle" => "Yes"
                        );
                }
                else
                {
                        $attrs = array(
                                "shuffle" => "No"
                        );
                }
                $a_xml_writer->xmlStartTag("render_choice", $attrs);
                $akeys = array_keys($this->answers);
                if ($this->getshuffle() && $a_shuffle)
                {
                        $akeys = $this->pcArrayShuffle($akeys);
                }
                // add answers
                foreach ($akeys as $index)
                {
                        $answer = $this->answers[$index];
                        $attrs = array(
                                "ident" => $index
                        );
                        $a_xml_writer->xmlStartTag("response_label", $attrs);
                        $this->addQTIMaterial($a_xml_writer, $answer->getAnswertext(), FALSE, FALSE);
                        
                        if (strlen($answer->getImage()))
                        {
                                $imagetype = "image/jpeg";
                                if (preg_match("/.*\.(png|gif)$/", $answer->getImage(), $matches))
                                {
                                        $imagetype = "image/" . $matches[1];
                                }
                                if ($force_image_references)
                                {
                                        $attrs = array(
                                                "imagtype" => $imagetype,
                                                "label" => $answer->getImage(),
                                                "uri" => $this->getImagePathWeb() . $answer->getImage()
                                        );
                                        $a_xml_writer->xmlElement("matimage", $attrs);
                                }
                                else
                                {
                                        $imagepath = $this->getImagePath() . $answer->getImage();
                                        $fh = @fopen($imagepath, "rb");
                                        if ($fh != false)
                                        {
                                                $imagefile = fread($fh, filesize($imagepath));
                                                fclose($fh);
                                                $base64 = base64_encode($imagefile);
                                                $attrs = array(
                                                        "imagtype" => $imagetype,
                                                        "label" => $answer->getImage(),
                                                        "embedded" => "base64"
                                                );
                                                $a_xml_writer->xmlElement("matimage", $attrs, $base64, FALSE, FALSE);
                                        }
                                }
                        }
                        $a_xml_writer->xmlEndTag("material");
                        $a_xml_writer->xmlEndTag("response_label");
                }
                $a_xml_writer->xmlEndTag("render_choice");
                $a_xml_writer->xmlEndTag("response_lid");
                $a_xml_writer->xmlEndTag("flow");
                $a_xml_writer->xmlEndTag("presentation");
                
                // PART II: qti resprocessing
                $a_xml_writer->xmlStartTag("resprocessing");
                $a_xml_writer->xmlStartTag("outcomes");
                $a_xml_writer->xmlStartTag("decvar");
                $a_xml_writer->xmlEndTag("decvar");
                $a_xml_writer->xmlEndTag("outcomes");
                // add response conditions
                foreach ($this->answers as $index => $answer)
                {
                        $attrs = array(
                                "continue" => "Yes"
                        );
                        $a_xml_writer->xmlStartTag("respcondition", $attrs);
                        // qti conditionvar
                        $a_xml_writer->xmlStartTag("conditionvar");
                        $attrs = array();
                        $attrs = array(
                                "respident" => "MCSR"
                        );
                        $a_xml_writer->xmlElement("varequal", $attrs, $index);
                        $a_xml_writer->xmlEndTag("conditionvar");
                        // qti setvar
                        $attrs = array(
                                "action" => "Add"
                        );
                        $a_xml_writer->xmlElement("setvar", $attrs, $answer->getPoints());
                        // qti displayfeedback
                        $linkrefid = "response_$index";
                        $attrs = array(
                                "feedbacktype" => "Response",
                                "linkrefid" => $linkrefid
                        );
                        $a_xml_writer->xmlElement("displayfeedback", $attrs);
                        $a_xml_writer->xmlEndTag("respcondition");
                }
                $a_xml_writer->xmlEndTag("resprocessing");

                // PART III: qti itemfeedback
                foreach ($this->answers as $index => $answer)
                {
                        $linkrefid = "response_$index";
                        $attrs = array(
                                "ident" => $linkrefid,
                                "view" => "All"
                        );
                        $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
                        // qti flow_mat
                        $a_xml_writer->xmlStartTag("flow_mat");
                        $a_xml_writer->xmlStartTag("material");
                        $a_xml_writer->xmlElement("mattext");
                        $a_xml_writer->xmlEndTag("material");
                        $a_xml_writer->xmlEndTag("flow_mat");
                        $a_xml_writer->xmlEndTag("itemfeedback");
                }
                
                $a_xml_writer->xmlEndTag("item");
                $a_xml_writer->xmlEndTag("questestinterop");

                $xml = $a_xml_writer->xmlDumpMem(FALSE);
                if (!$a_include_header)
                {
                        $pos = strpos($xml, "?>");
                        $xml = substr($xml, $pos + 2);
                }
                return $xml;
        }

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Field Documentation

assSingleChoice::$answers

Definition at line 54 of file class.assSingleChoice.php.

Referenced by fromXML().

assSingleChoice::$output_type

Definition at line 64 of file class.assSingleChoice.php.

Referenced by assSingleChoice(), and setOutputType().

assSingleChoice::$question

Definition at line 45 of file class.assSingleChoice.php.

Referenced by assSingleChoice(), and setQuestion().


The documentation for this class was generated from the following file: