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<?php
/**
* MvvTreeRoot.php
* The root element of a path or tree of MVV objects. This is the root of the
* tree or the end of a path.
*
* 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.
*
* @author Peter Thienel <thienel@data-quest.de>
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
* @since 3.5
*/
class MvvTreeRoot implements MvvTreeItem
{
/**
* @see MvvTreeItem::getTrailParentId()
*/
public function getTrailParentId()
{
return null;
}
/**
* @see MvvTreeItem::getTrailParent()
*/
public function getTrailParent()
{
return null;
}
/**
* @see MvvTreeItem::getChildren()
*/
public function getChildren()
{
$institute = [];
$query = "SELECT DISTINCT inst.fakultaets_id
FROM mvv_modul_inst mmi
JOIN mvv_modul USING (modul_id)
JOIN mvv_modulteil USING (modul_id)
JOIN mvv_lvgruppe_modulteil USING (modulteil_id)
JOIN mvv_studiengang USING (institut_id)
LEFT JOIN Institute inst USING (institut_id)
LEFT JOIN Institute fak ON (fak.institut_id = inst.fakultaets_id)
WHERE mmi.gruppe = ?
AND mvv_studiengang.stat IN (?)
ORDER BY fak.name ASC";
$statement = DBManager::get()->prepare($query);
$statement->execute(['hauptverantwortlich', Studiengang::getPublicStatus()]);
foreach ($statement->fetchAll(PDO::FETCH_COLUMN) as $faculty_id) {
$institute[$faculty_id] = new Fachbereich($faculty_id);
}
return $institute;
}
/**
* @see MvvTreeItem::hasChildren()
*/
public function hasChildren()
{
return count($this->getChildren()) > 0;
}
public function getDisplayName()
{
return Config::get()->UNI_NAME_CLEAN;
}
public function getId()
{
return 'root';
}
/**
* @see MvvTreeItem::isAssignable()
*/
public function isAssignable()
{
return false;
}
/**
* @see MvvTreeItem::getParents()
*/
public function getParents($mode = null)
{
return [];
}
/**
* @see MvvTreeItem::getTrails()
*/
public function getTrails($types = null, $mode = null, $path = null, $in_recursion = false)
{
$path = $path ?: ModuleManagementModelTreeItem::$TRAIL_DEFAULT;
$types = $types ?: $path;
$trails = [];
$class_name = get_class($this);
$next = $path[array_search($class_name, $path) + 1];
$parents = $this->getParents($next);
foreach ($parents as $parent) {
if ($parent) {
foreach ($parent->getTrails($types, $mode, $path, true) as $trail) {
if (in_array($class_name, $types)) {
$trail[$class_name] = $this;
}
if (!$in_recursion) {
if (($mode & MvvTreeItem::TRAIL_SHOW_INCOMPLETE)
|| count($trail) == count($types)) {
$trails[] = $trail;
}
} else {
$trails[] = $trail;
}
}
}
}
if (empty($trails) && in_array($class_name, $types)) {
$trails = [[$class_name => $this]];
}
return $trails;
}
}
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