Exercise XML Parser which completes/updates a given exercise by an xml string. More...

Inheritance diagram for ilExerciseXMLParser:

Collaboration diagram for ilExerciseXMLParser:

Public Member Functions
	__construct ($exercise, $a_xml_data, $obj_id=-1)
	Constructor. More...

	setHandlers ($a_xml_parser)
	set event handlers More...

	handlerBeginTag ($a_xml_parser, $a_name, $a_attribs)
	handler for begin of element More...

	handlerEndTag ($a_xml_parser, $a_name)
	handler for end of element More...

	handlerCharacterData ($a_xml_parser, $a_data)
	handler for character data More...

	start ()
	starts parsing an changes object by side effect. More...

	getAssignment ()

Public Member Functions inherited from ilSaxParser
	__construct ($a_xml_file='', $throwException=false)
	Constructor setup ILIAS global object public. More...

	setXMLContent ($a_xml_content)

	getXMLContent ()

	getInputType ()

	startParsing ()
	stores xml data in array More...

	createParser ()
	create parser More...

	setOptions ($a_xml_parser)
	set parser options More...

	setHandlers ($a_xml_parser)
	set event handler should be overwritten by inherited class private More...

	openXMLFile ()
	open xml file More...

	parse ($a_xml_parser, $a_fp=null)
	parse xml file More...

	freeParser ($a_xml_parser)
	free xml parser handle More...

	setThrowException ($throwException)
	set error handling More...

Public Member Functions inherited from PEAR
	__construct ($error_class=null)
	Constructor. More...

	_PEAR ()
	Destructor (the emulated type of...). More...

	registerShutdownFunc ($func, $args=array())
	Use this function to register a shutdown method for static classes. More...

	isError ($data, $code=null)
	Tell whether a value is a PEAR error. More...

	expectError ($code=' *')
	This method is used to tell which errors you expect to get. More...

	popExpect ()
	This method pops one element off the expected error codes stack. More...

	_checkDelExpect ($error_code)
	This method checks unsets an error code if available. More...

	delExpect ($error_code)
	This method deletes all occurences of the specified element from the expected error codes stack. More...

&	raiseError ($message=null, $code=null, $mode=null, $options=null, $userinfo=null, $error_class=null, $skipmsg=false)
	This method is a wrapper that returns an instance of the configured error class with this object's default error handling applied. More...

&	throwError ($message=null, $code=null, $userinfo=null)
	Simpler form of raiseError with fewer options. More...

	staticPushErrorHandling ($mode, $options=null)

	staticPopErrorHandling ()

	pushErrorHandling ($mode, $options=null)
	Push a new error handler on top of the error handler options stack. More...

	popErrorHandling ()
	Pop the last error handler used. More...

	loadExtension ($ext)
	OS independant PHP extension load. More...

Data Fields
	$exercise

	$obj_id

	$result

	$mode

	$assignment

	$storage

Data Fields inherited from ilSaxParser
	$input_type = null

	$xml_content = ''

	$ilias

	$lng

	$xml_file

	$throwException = false

Data Fields inherited from PEAR
	$_debug = false

	$_default_error_mode = null

	$_default_error_options = null

	$_default_error_handler = ''

	$_error_class = 'PEAR_Error'

	$_expected_errors = array()

Static Public Attributes
static	$CONTENT_NOT_COMPRESSED = 0

static	$CONTENT_GZ_COMPRESSED = 1

static	$CONTENT_ZLIB_COMPRESSED = 2

Private Member Functions
	updateMember ($user_id, $action)
	update member object according to given action More...

	updateFile ($filename, $b64encodedContent, $action)
	update file according to filename More...

	updateMarking ($usr_id)
	update marking of member More...

Additional Inherited Members
Static Public Member Functions inherited from PEAR
static &	getStaticProperty ($class, $var)
	If you have a class that's mostly/entirely static, and you need static properties, you can use this method to simulate them. More...

static	setErrorHandling ($mode=null, $options=null)
	Sets how errors generated by this object should be handled. More...

Protected Member Functions inherited from ilSaxParser
	handleError ($message, $code)
	use given error handler to handle error message or internal ilias error message handle More...

Detailed Description

Exercise XML Parser which completes/updates a given exercise by an xml string.

Author: Roland Küstermann rolan.nosp@m.d@ku.nosp@m.ester.nosp@m.mann.nosp@m..com

Version

Id: class.ilObjectXMLParser.php 12811 2006-12-08 18:37:44Z akill

Definition at line 18 of file class.ilExerciseXMLParser.php.

Constructor & Destructor Documentation

◆ __construct()

ilExerciseXMLParser::__construct	(	$exercise,
		$a_xml_data,
		$obj_id = `-1`
	)

Constructor.

Parameters

ilExercise	$exercise	existing exercise object
string	$a_xml_file	xml data
int	$obj_id	obj id of exercise which is to be updated public

Definition at line 75 of file class.ilExerciseXMLParser.php.

References $exercise, $obj_id, ilFSStorageExercise\create(), ilExAssignment\getAssignmentDataOfExercise(), and ilSaxParser\setXMLContent().

         {
 // @todo: needs to be revised for multiple assignments per exercise
 
                 parent::__construct();
                 
                 $this->exercise = $exercise;
                 // get all assignments and choose first one if exists, otherwise create
                 $assignments = ilExAssignment::getAssignmentDataOfExercise($exercise->getId());
                 if (count ($assignments) > 0) {
                         $this->assignment = new ilExAssignment($assignments [0]["id"]);
                 } else {
                         $this->assignment = new ilExAssignment();
                         $this->assignment->setExerciseId($exercise->getId());
                         $this->assignment->save();
                 }
                 
                 include_once ("./Modules/Exercise/classes/class.ilFSStorageExercise.php");
                 $this->storage = new ilFSStorageExercise ( $this->exercise->getId(), $this->assignment->getId());
                 $this->storage->create();
                 $this->storage->init();
                 
                 $this->setXMLContent($a_xml_data);
                 $this->obj_id = $obj_id;
                 $this->result = false;
         }

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Member Function Documentation

◆ getAssignment()

ilExerciseXMLParser::getAssignment ( )

Definition at line 352 of file class.ilExerciseXMLParser.php.

References $assignment.

                                          {
                 return $this->assignment;
         }

◆ handlerBeginTag()

ilExerciseXMLParser::handlerBeginTag	(	$a_xml_parser,
		$a_name,
		$a_attribs
	)

handler for begin of element

Parameters

resource	$a_xml_parser	xml parser
string	$a_name	element name
array	$a_attribs	element attributes array

Exceptions

ilExerciseException when obj id != - 1 and if it it does not match the id in the xml

Definition at line 124 of file class.ilExerciseXMLParser.php.

References $CONTENT_GZ_COMPRESSED, $CONTENT_NOT_COMPRESSED, $CONTENT_ZLIB_COMPRESSED, ilExerciseException\$ID_DEFLATE_METHOD_MISMATCH, ilExerciseException\$ID_MISMATCH, ilExerciseXMLWriter\$STATUS_NOT_GRADED, ilExerciseXMLWriter\$STATUS_PASSED, and ilUtil\__extractId().

         {               
                 switch($a_name)
                 {
                         case 'Exercise':
                             if (isset($a_attribs["obj_id"]))
                             {
                    $read_obj_id = ilUtil::__extractId($a_attribs["obj_id"], IL_INST_ID);
                                if ($this->obj_id != -1 && (int) $read_obj_id  != -1 && (int) $this->obj_id != (int) $read_obj_id)
                                {
                        throw new ilExerciseException ("Object IDs (xml $read_obj_id and argument ".$this->obj_id.") do not match!", ilExerciseException::$ID_MISMATCH);
                    }
                             }
                                 break;
                         case 'Member':
                             $this->usr_action = $a_attribs["action"];
                             $this->usr_id = ilUtil::__extractId($a_attribs["usr_id"], IL_INST_ID);
                                 break;
 
                         case 'File':
                 $this->file_action = $a_attribs["action"];
                                 break;
                         case 'Content':
                 $this->mode = ilExerciseXMLParser::$CONTENT_NOT_COMPRESSED;
                             if ($a_attribs["mode"] == "GZIP")
                             {
                     if (!function_exists("gzdecode"))
                         throw new  ilExerciseException ("Deflating with gzip is not supported",  ilExerciseException::$ID_DEFLATE_METHOD_MISMATCH);
 
                                 $this->mode = ilExerciseXMLParser::$CONTENT_GZ_COMPRESSED;
                             } elseif ($a_attribs["mode"] == "ZLIB")
                             {
                     if (!function_exists("gzuncompress"))
                         throw new ilExerciseException ("Deflating with zlib (compress/uncompress) is not supported",  ilExerciseException::$ID_DEFLATE_METHOD_MISMATCH);
 
                                 $this->mode = ilExerciseXMLParser::$CONTENT_ZLIB_COMPRESSED;
                             }
                             break;
                         case 'Marking':
                              $this->status = $a_attribs["status"];
                              if ($this->status == ilExerciseXMLWriter::$STATUS_NOT_GRADED)
                                  $this->status = "notgraded";
                              elseif ($this->status == ilExerciseXMLWriter::$STATUS_PASSED)
                                  $this->status = "passed";
                              else 
                                  $this->status = "failed";
                              break;
 
                 }
         }

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◆ handlerCharacterData()

ilExerciseXMLParser::handlerCharacterData	(	$a_xml_parser,
		$a_data
	)

handler for character data

Parameters

resource	$a_xml_parser	xml parser
string	$a_data	character data

Definition at line 242 of file class.ilExerciseXMLParser.php.

         {
                 if($a_data != "\n")
                 {
                         $this->cdata .= $a_data;
                 }
         }

◆ handlerEndTag()

ilExerciseXMLParser::handlerEndTag	(	$a_xml_parser,
		$a_name
	)

handler for end of element

Parameters

resource	$a_xml_parser	xml parser
string	$a_name	element name

Definition at line 183 of file class.ilExerciseXMLParser.php.

References comment(), updateFile(), updateMarking(), and updateMember().

         {
                 switch($a_name)
                 {
                         case 'Exercise':
                 $this->result = true;
                                 break;
                         case 'Title':
                             $this->exercise->setTitle(trim($this->cdata));
                             $this->assignment->setTitle(trim($this->cdata));
                                 break;
                         case 'Description':
                             $this->exercise->setDescription(trim($this->cdata));
                                 break;
                         case 'Instruction':
                                 $this->assignment->setInstruction(trim($this->cdata));
                                 break;
                         case 'DueDate':
                                 $this->assignment->setDeadLine(trim($this->cdata));
                                 break;
                         case 'Member':
                             $this->updateMember($this->usr_id, $this->usr_action);
                             // update marking after update member.
                                 $this->updateMarking($this->usr_id);
                             break;                          
                         case 'Filename':
                             $this->file_name = trim($this->cdata);
                             break;
                         case 'Content':
                             $this->file_content = trim($this->cdata);
                             break;
                         case 'File':
                 $this->updateFile($this->file_name, $this->file_content, $this->file_action);
                             break;
                         case 'Comment':
                              $this->comment = trim($this->cdata);
                              break;
                         case 'Notice':
                              $this->notice = trim($this->cdata);
                              break;
                         case 'Mark':
                              $this->mark = trim($this->cdata);
                              break;                          
                         case 'Marking':                    
                              // see Member end tag
                              break;                         
                 }
 
                 $this->cdata = '';
 
                 return;
         }

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◆ setHandlers()

ilExerciseXMLParser::setHandlers ( $a_xml_parser )

set event handlers

Parameters

resource reference to the xml parser private

Definition at line 109 of file class.ilExerciseXMLParser.php.

         {
                 xml_set_object($a_xml_parser,$this);
                 xml_set_element_handler($a_xml_parser,'handlerBeginTag','handlerEndTag');
                 xml_set_character_data_handler($a_xml_parser,'handlerCharacterData');
         }

◆ start()

ilExerciseXMLParser::start ( )

starts parsing an changes object by side effect.

Exceptions

ilExerciseException when obj id != - 1 and if it it does not match the id in the xml

Returns: boolean true, if no errors happend.

Definition at line 314 of file class.ilExerciseXMLParser.php.

References ilSaxParser\startParsing().

                                  {
             $this->startParsing();
             return $this->result > 0;
         }

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◆ updateFile()

ilExerciseXMLParser::updateFile	(	$filename,
		$b64encodedContent,
		$action
	)

private

update file according to filename

Parameters

string	$filename
string	$content	base 64 encoded string
string	$action	can be Attach or Detach

Definition at line 281 of file class.ilExerciseXMLParser.php.

References $CONTENT_GZ_COMPRESSED, $CONTENT_ZLIB_COMPRESSED, and $filename.

Referenced by handlerEndTag().

         {
        if (strlen($filename) == 0) {
            return;
        }
                  $filename= $this->storage->getAbsolutePath()."/".$filename;
                 
             if ($action == "Attach")
         {
            $content = base64_decode((string) $b64encodedContent);
            if ($this->mode == ilExerciseXMLParser::$CONTENT_GZ_COMPRESSED) {
                 $content = gzdecode($content);
                }elseif ($this->mode ==ilExerciseXMLParser::$CONTENT_ZLIB_COMPRESSED) {
                 $content = gzuncompress($content);
                }
               
                //echo $filename;
                $this->storage->writeToFile($content, $filename);
            
         }
         if ($action == "Detach")
         {
             $this->storage->deleteFile($filename);
         }
         }

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◆ updateMarking()

ilExerciseXMLParser::updateMarking ( $usr_id )

private

update marking of member

Parameters

int $usr_id

Definition at line 324 of file class.ilExerciseXMLParser.php.

References comment(), and ilUtil\stripSlashes().

Referenced by handlerEndTag().

                                                 {
                 
                 $member_status = $this->assignment->getMemberStatus($usr_id);           
             if (isset($this->mark)) 
             {                   
                         $member_status->setMark(ilUtil::stripSlashes($this->mark));
             }
                 if (isset($this->comment))
                 {
                         $member_status->setComment(ilUtil::stripSlashes($this->comment));
                 }
             if (isset($this->status))
                 {               
                         $member_status->setStatus(ilUtil::stripSlashes($this->status));
             }
             if (isset($this->notice))
                 {
                         $member_status->setNotice(ilUtil::stripSlashes($this->notice));
             }
                 $member_status->update();
                 
             // reset variables
             $this->mark = null;
             $this->status = null;
             $this->notice = null;
             $this->comment = null;
         }

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◆ updateMember()

ilExerciseXMLParser::updateMember	(	$user_id,
		$action
	)

private

update member object according to given action

Parameters

int	$user_id
string	$action	can be Attach or Detach

Definition at line 257 of file class.ilExerciseXMLParser.php.

Referenced by handlerEndTag().

                                                           {
        if (!is_int($user_id) || $user_id <= 0) {
            return;
        }
            $memberObject = new ilExerciseMembers($this->exercise);
 
            if ($action == "Attach" && !$memberObject->isAssigned($user_id))
            {
             $memberObject->assignMember ($user_id);
        }
 
        if ($action == "Detach" && $memberObject->isAssigned($user_id))
        {
             $memberObject->deassignMember ($user_id);
        }
         }