class.assNumeric.php

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<?php
 /*
   +----------------------------------------------------------------------------+
   | ILIAS open source                                                          |
   +----------------------------------------------------------------------------+
   | Copyright (c) 1998-2001 ILIAS open source, University of Cologne           |
   |                                                                            |
   | This program is free software; you can redistribute it and/or              |
   | modify it under the terms of the GNU General Public License                |
   | as published by the Free Software Foundation; either version 2             |
   | of the License, or (at your option) any later version.                     |
   |                                                                            |
   | This program is distributed in the hope that it will be useful,            |
   | but WITHOUT ANY WARRANTY; without even the implied warranty of             |
   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              |
   | GNU General Public License for more details.                               |
   |                                                                            |
   | You should have received a copy of the GNU General Public License          |
   | along with this program; if not, write to the Free Software                |
   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
   +----------------------------------------------------------------------------+
*/
include_once "./Modules/TestQuestionPool/classes/class.assQuestion.php";
include_once "./Modules/Test/classes/inc.AssessmentConstants.php";

class assNumeric extends assQuestion
{
        protected $lower_limit;
        protected $upper_limit;
        
        var $maxchars;

        function __construct(
                $title = "",
                $comment = "",
                $author = "",
                $owner = -1,
                $question = ""
        )
        {
                parent::__construct($title, $comment, $author, $owner, $question);
                $this->maxchars = 6;
        }

        function isComplete()
        {
                if (($this->title) and ($this->author) and ($this->question) and ($this->getMaximumPoints() > 0))
                {
                        return true;
                }
                        else
                {
                        return false;
                }
        }

        function saveToDb($original_id = "")
        {
                global $ilDB;

                $this->saveQuestionDataToDb($original_id);

                // save additional data
                $affectedRows = $ilDB->manipulateF("DELETE FROM " . $this->getAdditionalTableName() . " WHERE question_fi = %s", 
                        array("integer"),
                        array($this->getId())
                );

                $affectedRows = $ilDB->manipulateF("INSERT INTO " . $this->getAdditionalTableName() . " (question_fi, maxnumofchars) VALUES (%s, %s)", 
                        array("integer", "integer"),
                        array(
                                $this->getId(),
                                ($this->getMaxChars()) ? $this->getMaxChars() : 0
                        )
                );

                // Write range to the database
                
                // 1. delete old range
                $result = $ilDB->manipulateF("DELETE FROM qpl_num_range WHERE question_fi = %s",
                        array('integer'),
                        array($this->getId())
                );

                // 2. write range
                $next_id = $ilDB->nextId('qpl_num_range');
                $answer_result = $ilDB->manipulateF("INSERT INTO qpl_num_range (range_id, question_fi, lowerlimit, upperlimit, points, aorder, tstamp) VALUES (%s, %s, %s, %s, %s, %s, %s)",
                        array('integer','integer', 'text', 'text', 'float', 'integer', 'integer'),
                        array($next_id, $this->id, $this->getLowerLimit(), $this->getUpperLimit(), $this->getPoints(), 0, time())
                );

                parent::saveToDb($original_id);
        }

        function loadFromDb($question_id)
        {
                global $ilDB;
                
                $result = $ilDB->queryF("SELECT qpl_questions.*, " . $this->getAdditionalTableName() . ".* FROM qpl_questions LEFT JOIN " . $this->getAdditionalTableName() . " ON " . $this->getAdditionalTableName() . ".question_fi = qpl_questions.question_id WHERE qpl_questions.question_id = %s",
                        array("integer"),
                        array($question_id)
                );
                if ($result->numRows() == 1)
                {
                        $data = $ilDB->fetchAssoc($result);
                        $this->setId($question_id);
                        $this->setObjId($data["obj_fi"]);
                        $this->setTitle($data["title"]);
                        $this->setComment($data["description"]);
                        $this->setNrOfTries($data['nr_of_tries']);
                        $this->setOriginalId($data["original_id"]);
                        $this->setAuthor($data["author"]);
                        $this->setPoints($data["points"]);
                        $this->setOwner($data["owner"]);
                        include_once("./Services/RTE/classes/class.ilRTE.php");
                        $this->setQuestion(ilRTE::_replaceMediaObjectImageSrc($data["question_text"], 1));
                        $this->setMaxChars($data["maxnumofchars"]);
                        $this->setEstimatedWorkingTime(substr($data["working_time"], 0, 2), substr($data["working_time"], 3, 2), substr($data["working_time"], 6, 2));
                }


                $result = $ilDB->queryF("SELECT * FROM qpl_num_range WHERE question_fi = %s ORDER BY aorder ASC",
                        array('integer'),
                        array($question_id)
                );

                include_once "./Modules/TestQuestionPool/classes/class.assNumericRange.php";
                if ($result->numRows() > 0)
                {
                        while ($data = $ilDB->fetchAssoc($result))
                        {
                                $this->setPoints($data['points']);
                                $this->setLowerLimit($data['lowerlimit']);
                                $this->setUpperLimit($data['upperlimit']);
                        }
                }

                parent::loadFromDb($question_id);
        }

        function duplicate($for_test = true, $title = "", $author = "", $owner = "")
        {
                if ($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 ("./Modules/TestQuestionPool/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 generic feedback
                $clone->duplicateFeedbackGeneric($this_id);

                $clone->onDuplicate($this_id);
                return $clone->id;
        }

        function copyObject($target_questionpool, $title = "")
        {
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
                // duplicate the question in database
                $clone = $this;
                include_once ("./Modules/TestQuestionPool/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 generic feedback
                $clone->duplicateFeedbackGeneric($original_id);

                $clone->onCopy($this->getObjId(), $this->getId());
                return $clone->id;
        }

        function getLowerLimit()
        {
                return $this->lower_limit;
        }
        
        function getUpperLimit()
        {
                return $this->upper_limit;
        }
        
        function setLowerLimit($a_limit)
        {
                $this->lower_limit = $a_limit;
        }
        
        function setUpperLimit($a_limit)
        {
                $this->upper_limit = $a_limit;
        }
        
        function getMaximumPoints()
        {
                return $this->getPoints();
        }

        function calculateReachedPoints($active_id, $pass = NULL)
        {
                global $ilDB;
                
                $found_values = array();
                if (is_null($pass))
                {
                        $pass = $this->getSolutionMaxPass($active_id);
                }
                $result = $ilDB->queryF("SELECT * FROM tst_solutions WHERE active_fi = %s AND question_fi = %s AND pass = %s",
                        array('integer','integer','integer'),
                        array($active_id, $this->getId(), $pass)
                );
                $data = $ilDB->fetchAssoc($result);
                
                $enteredvalue = $data["value1"];

                $points = 0;
                if ($this->contains($enteredvalue))
                {
                        $points = $this->getPoints();
                }

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

  function contains($value) 
        {
                include_once "./Services/Math/classes/class.EvalMath.php";
                $eval = new EvalMath();
                $eval->suppress_errors = TRUE;
                $result = $eval->e($value);
                if (($result === FALSE) || ($result === TRUE)) return FALSE;
                if (($result >= $eval->e($this->getLowerLimit())) && ($result <= $eval->e($this->getUpperLimit())))
                {
                        return TRUE;
                }
                else
                {
                        return FALSE;
                }
  }
        
        function saveWorkingData($active_id, $pass = NULL)
        {
                global $ilDB;
                global $ilUser;

                if (is_null($pass))
                {
                        include_once "./Modules/Test/classes/class.ilObjTest.php";
                        $pass = ilObjTest::_getPass($active_id);
                }
                $entered_values = 0;
                $numeric_result = str_replace(",",".",$_POST["numeric_result"]);

                include_once "./Services/Math/classes/class.EvalMath.php";
                $math = new EvalMath();
                $math->suppress_errors = TRUE;
                $result = $math->evaluate($numeric_result);
                $returnvalue = true;
                if ((($result === FALSE) || ($result === TRUE)) && (strlen($result) > 0))
                {
                        ilUtil::sendInfo($this->lng->txt("err_no_numeric_value"), true);
                        $returnvalue = false;
                }
                $result = $ilDB->queryF("SELECT solution_id FROM tst_solutions WHERE active_fi = %s AND question_fi = %s AND pass = %s",
                        array('integer','integer','integer'),
                        array($active_id, $this->getId(), $pass)
                );
                $row = $ilDB->fetchAssoc($result);
                $update = $row["solution_id"];
                if ($update)
                {
                        if (strlen($numeric_result))
                        {
                                $affectedRows = $ilDB->update("tst_solutions", array(
                                        "value1" => array("clob", trim($numeric_result)),
                                        "tstamp" => array("integer", time())
                                ), array(
                                "solution_id" => array("integer", $update)
                                ));
                                $entered_values++;
                        }
                        else
                        {
                                $affectedRows = $ilDB->manipulateF("DELETE FROM tst_solutions WHERE solution_id = %s",
                                        array('integer'),
                                        array($update)
                                );
                        }
                }
                else
                {
                        if (strlen($numeric_result))
                        {
                                $next_id = $ilDB->nextId('tst_solutions');
                                $affectedRows = $ilDB->insert("tst_solutions", array(
                                        "solution_id" => array("integer", $next_id),
                                        "active_fi" => array("integer", $active_id),
                                        "question_fi" => array("integer", $this->getId()),
                                        "value1" => array("clob", trim($numeric_result)),
                                        "value2" => array("clob", null),
                                        "pass" => array("integer", $pass),
                                        "tstamp" => array("integer", time())
                                ));
                                $entered_values++;
                        }
                }
                if ($entered_values)
                {
                        include_once ("./Modules/Test/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 ("./Modules/Test/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 $returnvalue;
        }

        function getQuestionType()
        {
                return "assNumeric";
        }
        
        function getMaxChars()
        {
                return $this->maxchars;
        }
        
        function setMaxChars($maxchars)
        {
                $this->maxchars = $maxchars;
        }
        
        function getAdditionalTableName()
        {
                return "qpl_qst_numeric";
        }

        function getRTETextWithMediaObjects()
        {
                return parent::getRTETextWithMediaObjects();
        }
        
        public function setExportDetailsXLS(&$adapter, $startrow, $active_id, $pass)
        {
                $solutions = $this->getSolutionValues($active_id, $pass);
                $adapter->setCellValue($startrow, 0, $this->lng->txt($this->getQuestionType()), CELL_FORMAT_TITLE);
                $adapter->setCellValue($startrow, 1, $this->getTitle(), CELL_FORMAT_TITLE);
                $i = 1;
                $adapter->setCellValue($startrow + $i, 0, $this->lng->txt("result"), CELL_FORMAT_BOLD);
                if (strlen($solutions[0]["value1"]))
                {
                        $adapter->setCellValue($startrow + $i, 1, $solutions[0]["value1"]);
                }
                $i++;
                return $startrow + $i + 1;
        }
}

?>