Base class for course and group waiting lists. More...

Inheritance diagram for ilWaitingList:

Collaboration diagram for ilWaitingList:

Public Member Functions
	__construct ($a_obj_id)
	Constructor. More...

	getObjId ()
	get obj id More...

	addToList ($a_usr_id)
	add to list More...

	updateSubscriptionTime ($a_usr_id, $a_subtime)
	update subscription time More...

	removeFromList ($a_usr_id)
	remove usr from list More...

	isOnList ($a_usr_id)
	check if is on waiting list More...

	getCountUsers ()
	get number of users More...

	getPosition ($a_usr_id)
	get position More...

	getAllUsers ()
	get all users on waiting list More...

	getUser ($a_usr_id)
	get user More...

	getUserIds ()
	Get all user ids of users on waiting list. More...

Static Public Member Functions
static	lookupListSize ($a_obj_id)
	Lookup waiting lit size. More...

static	_deleteAll ($a_obj_id)
	delete all More...

static	_deleteUser ($a_usr_id)
	Delete user. More...

static	deleteUserEntry ($a_usr_id, $a_obj_id)
	Delete one user entry. More...

static	_isOnList ($a_usr_id, $a_obj_id)
	Check if a user on the waiting list. More...

static	_preloadOnListInfo ($a_usr_ids, $a_obj_ids)
	Preload on list info. More...

Static Public Attributes
static	$is_on_list = array()

Private Member Functions
	read ()
	Read waiting list. More...

Private Attributes
	$db = null

	$obj_id = 0

	$user_ids = array()

	$users = array()

Detailed Description

Base class for course and group waiting lists.

Author: Stefan Meyer smeye.nosp@m.r.il.nosp@m.ias@g.nosp@m.mx.d.nosp@m.e

Version: $Id$

Definition at line 33 of file class.ilWaitingList.php.

Constructor & Destructor Documentation

◆ __construct()

ilWaitingList::__construct ( $a_obj_id )

Constructor.

public

Parameters

int obj_id

Definition at line 49 of file class.ilWaitingList.php.

References $DIC, $ilDB, and read().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
 
         $this->db = $ilDB;
         $this->obj_id = $a_obj_id;
 
         $this->read();
     }

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Member Function Documentation

◆ _deleteAll()

static ilWaitingList::_deleteAll ( $a_obj_id )

static

delete all

public

Parameters

int obj_id

Definition at line 87 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, and $res.

Referenced by ilMembershipTest\testMembership(), and ilSoapCourseAdministration\updateCourse().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
 
         $query = "DELETE FROM crs_waiting_list WHERE obj_id = " . $ilDB->quote($a_obj_id, 'integer') . " ";
         $res = $ilDB->manipulate($query);
 
         return true;
     }

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◆ _deleteUser()

static ilWaitingList::_deleteUser ( $a_usr_id )

static

Delete user.

public

Parameters

int user_id

Definition at line 106 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, and $res.

Referenced by ilParticipants\_deleteUser(), and ilMembershipTest\testMembership().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
 
         $query = "DELETE FROM crs_waiting_list WHERE usr_id = " . $ilDB->quote($a_usr_id, 'integer');
         $res = $ilDB->manipulate($query);
 
         return true;
     }

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◆ _isOnList()

static ilWaitingList::_isOnList	(	$a_usr_id,
		$a_obj_id
	)

static

Check if a user on the waiting list.

Returns: bool

Parameters

object	$a_usr_id
object	$a_obj_id	public

Definition at line 239 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, and $res.

Referenced by ilObjGroupAccess\_checkAccess(), ilObjCourseAccess\_checkAccess(), ilObjSessionAccess\_checkAccess(), ilObjCourseListGUI\getProperties(), ilObjGroupListGUI\getProperties(), ilObjGroupGUI\getTabs(), ilObjCourseGUI\getTabs(), and ilObjSessionGUI\showJoinRequestButton().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         if (isset(self::$is_on_list[$a_usr_id][$a_obj_id])) {
             return self::$is_on_list[$a_usr_id][$a_obj_id];
         }
         
         $query = "SELECT usr_id " .
             "FROM crs_waiting_list " .
             "WHERE obj_id = " . $ilDB->quote($a_obj_id, 'integer') . " " .
             "AND usr_id = " . $ilDB->quote($a_usr_id, 'integer');
         $res = $ilDB->query($query);
         return $res->numRows() ? true : false;
     }

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◆ _preloadOnListInfo()

static ilWaitingList::_preloadOnListInfo	(	$a_usr_ids,
		$a_obj_ids
	)

static

Preload on list info.

This is used, e.g. in the repository to prevent multiple reads on the waiting list table. The function is triggered in the preload functions of ilObjCourseAccess and ilObjGroupAccess.

Parameters

array	$a_usr_ids	array of user ids
array	$a_obj_ids	array of object ids

Definition at line 266 of file class.ilWaitingList.php.

References $DIC, $ilDB, $obj_id, $query, and $res.

Referenced by ilObjGroupAccess\_preloadData(), and ilObjCourseAccess\_preloadData().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         if (!is_array($a_usr_ids)) {
             $a_usr_ids = array($a_usr_ids);
         }
         if (!is_array($a_obj_ids)) {
             $a_obj_ids = array($a_obj_ids);
         }
         foreach ($a_usr_ids as $usr_id) {
             foreach ($a_obj_ids as $obj_id) {
                 self::$is_on_list[$usr_id][$obj_id] = false;
             }
         }
         $query = "SELECT usr_id, obj_id " .
             "FROM crs_waiting_list " .
             "WHERE " .
             $ilDB->in("obj_id", $a_obj_ids, false, "integer") . " AND " .
             $ilDB->in("usr_id", $a_usr_ids, false, "integer");
         $res = $ilDB->query($query);
         while ($rec = $ilDB->fetchAssoc($res)) {
             self::$is_on_list[$rec["usr_id"]][$rec["obj_id"]] = true;
         }
     }

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◆ addToList()

ilWaitingList::addToList ( $a_usr_id )

add to list

public

Parameters

int usr_id

Definition at line 155 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, $res, getObjId(), isOnList(), and read().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         if ($this->isOnList($a_usr_id)) {
             return false;
         }
         $query = "INSERT INTO crs_waiting_list (obj_id,usr_id,sub_time) " .
             "VALUES (" .
             $ilDB->quote($this->getObjId(), 'integer') . ", " .
             $ilDB->quote($a_usr_id, 'integer') . ", " .
             $ilDB->quote(time(), 'integer') . " " .
             ")";
         $res = $ilDB->manipulate($query);
         $this->read();
 
         return true;
     }

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◆ deleteUserEntry()

static ilWaitingList::deleteUserEntry	(	$a_usr_id,
		$a_obj_id
	)

static

Delete one user entry.

Parameters

int	$a_usr_id
int	$a_obj_id

Returns

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

References $DIC, $ilDB, and $query.

Referenced by ilParticipant\add(), ilParticipants\add(), and ilObjSessionGUI\unregisterObject().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         $query = "DELETE FROM crs_waiting_list " .
             "WHERE usr_id = " . $ilDB->quote($a_usr_id, 'integer') . ' ' .
             "AND obj_id = " . $ilDB->quote($a_obj_id, 'integer');
         $ilDB->query($query);
         return true;
     }

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◆ getAllUsers()

ilWaitingList::getAllUsers ( )

get all users on waiting list

public

Returns: array array(position,time,usr_id)

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

Referenced by ilCourseXMLWriter\__buildWaitingList().

     {
         return $this->users ? $this->users : array();
     }

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◆ getCountUsers()

ilWaitingList::getCountUsers ( )

get number of users

public

Returns: int number of users

Definition at line 301 of file class.ilWaitingList.php.

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

◆ getObjId()

ilWaitingList::getObjId ( )

get obj id

public

Returns: int obj_id

Definition at line 144 of file class.ilWaitingList.php.

References $obj_id.

Referenced by ilLearningSequenceWaitingList\addToList(), ilSessionWaitingList\addToList(), ilCourseWaitingList\addToList(), ilGroupWaitingList\addToList(), addToList(), read(), ilCourseWaitingList\removeFromList(), removeFromList(), and updateSubscriptionTime().

     {
         return $this->obj_id;
     }

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◆ getPosition()

ilWaitingList::getPosition ( $a_usr_id )

get position

public

Parameters

int usr_id

Returns: position of user otherwise -1

Definition at line 313 of file class.ilWaitingList.php.

     {
         return isset($this->users[$a_usr_id]) ? $this->users[$a_usr_id]['position'] : -1;
     }

◆ getUser()

ilWaitingList::getUser ( $a_usr_id )

get user

public

Parameters

int usr_id

Returns

Definition at line 336 of file class.ilWaitingList.php.

     {
         return isset($this->users[$a_usr_id]) ? $this->users[$a_usr_id] : false;
     }

◆ getUserIds()

ilWaitingList::getUserIds ( )

Get all user ids of users on waiting list.

Definition at line 346 of file class.ilWaitingList.php.

     {
         return $this->user_ids ? $this->user_ids : array();
     }

◆ isOnList()

ilWaitingList::isOnList ( $a_usr_id )

check if is on waiting list

public

Parameters

int usr_id

Returns

Definition at line 226 of file class.ilWaitingList.php.

Referenced by addToList().

     {
         return isset($this->users[$a_usr_id]) ? true : false;
     }

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◆ lookupListSize()

static ilWaitingList::lookupListSize ( $a_obj_id )

static

Lookup waiting lit size.

Parameters

int $a_obj_id

Definition at line 65 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, $res, $row, and ilDBConstants\FETCHMODE_OBJECT.

Referenced by ilObjGroupAccess\lookupRegistrationInfo(), and ilObjCourseAccess\lookupRegistrationInfo().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         $query = 'SELECT count(usr_id) num from crs_waiting_list WHERE obj_id = ' . $ilDB->quote($a_obj_id, 'integer');
         $res = $ilDB->query($query);
         
         while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
             return (int) $row->num;
         }
         return 0;
     }

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◆ read()

ilWaitingList::read ( )

private

Read waiting list.

private

Parameters

Definition at line 359 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, $res, $row, ilDBConstants\FETCHMODE_OBJECT, and getObjId().

Referenced by __construct(), addToList(), and removeFromList().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         $this->users = array();
 
         $query = "SELECT * FROM crs_waiting_list " .
             "WHERE obj_id = " . $ilDB->quote($this->getObjId(), 'integer') . " ORDER BY sub_time";
 
         $res = $this->db->query($query);
         $counter = 0;
         while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
             ++$counter;
             $this->users[$row->usr_id]['position'] = $counter;
             $this->users[$row->usr_id]['time'] = $row->sub_time;
             $this->users[$row->usr_id]['usr_id'] = $row->usr_id;
             
             $this->user_ids[] = $row->usr_id;
         }
         return true;
     }

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◆ removeFromList()

ilWaitingList::removeFromList ( $a_usr_id )

remove usr from list

public

Parameters

int usr_id

Returns

Definition at line 204 of file class.ilWaitingList.php.

References $DIC, $ilDB, $query, $res, getObjId(), and read().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         $query = "DELETE FROM crs_waiting_list " .
             " WHERE obj_id = " . $ilDB->quote($this->getObjId(), 'integer') . " " .
             " AND usr_id = " . $ilDB->quote($a_usr_id, 'integer') . " ";
         $res = $ilDB->manipulate($query);
         $this->read();
 
         return true;
     }

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◆ updateSubscriptionTime()

ilWaitingList::updateSubscriptionTime	(	$a_usr_id,
		$a_subtime
	)

update subscription time

public

Parameters

int	usr_id
int	subsctription time

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

References $DIC, $ilDB, $query, $res, and getObjId().

     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
         
         $query = "UPDATE crs_waiting_list " .
             "SET sub_time = " . $ilDB->quote($a_subtime, 'integer') . " " .
             "WHERE usr_id = " . $ilDB->quote($a_usr_id, 'integer') . " " .
             "AND obj_id = " . $ilDB->quote($this->getObjId(), 'integer') . " ";
         $res = $ilDB->manipulate($query);
         return true;
     }

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Field Documentation

◆ $db

ilWaitingList::$db = null

private

Definition at line 35 of file class.ilWaitingList.php.

◆ $is_on_list

ilWaitingList::$is_on_list = array()

static

Definition at line 40 of file class.ilWaitingList.php.

◆ $obj_id

ilWaitingList::$obj_id = 0

private

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

Referenced by _preloadOnListInfo(), and getObjId().

◆ $user_ids

ilWaitingList::$user_ids = array()

private

Definition at line 37 of file class.ilWaitingList.php.

◆ $users

ilWaitingList::$users = array()

private

Definition at line 38 of file class.ilWaitingList.php.

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

Services/Membership/classes/class.ilWaitingList.php

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ _deleteAll()

◆ _deleteUser()

◆ _isOnList()

◆ _preloadOnListInfo()

◆ addToList()

◆ deleteUserEntry()

◆ getAllUsers()

◆ getCountUsers()

◆ getObjId()

◆ getPosition()

◆ getUser()

◆ getUserIds()

◆ isOnList()

◆ lookupListSize()

◆ read()

◆ removeFromList()

◆ updateSubscriptionTime()

Field Documentation

◆ $db

◆ $is_on_list

◆ $obj_id

◆ $user_ids

◆ $users