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Created Zeitwunsch_gueltigkeit Class
Methods: - load: Ladet eine Zeitwunschgueltigkeit. - save: Speichert eine Zeitwunschgueltigkeit (insert/update) - getByUID: Ladet Zeitwunschgueltigkeiten einer UID mitsamt den zugehoerigen Studiensemestern. - getByStudiensemester: Ladet Zeitwunschgueltigkeiten einer UID und eines bestimmten Semesters
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<?php
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require_once(dirname(__FILE__). '/basis_db.class.php');
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require_once(dirname(__FILE__). '/studiensemester.class.php');
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class zeitwunsch_gueltigkeit extends basis_db
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{
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public $new; // boolean
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public $result = array();
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public $zeitwunsch_gueltigkeit_id; // integer
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public $mitarbeiter_uid; // varchar 32
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public $von; // date
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public $bis; // date
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public $insertamum; // timestamp
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public $insertvon; // varchar 32
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public $updateamum; // timestamp
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public $updatevon; // varchar 32
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public function __construct()
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{
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parent::__construct($zeitwunsch_gueltigkeit_id = null);
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if (!is_null($zeitwunsch_gueltigkeit_id))
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{
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$this->load($zeitwunsch_gueltigkeit_id);
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}
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}
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/**
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* Ladet eine Zeitwunschgueltigkeit.
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* @param $zeitwunsch_gueltigkeit_id
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* @return bool
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*/
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public function load($zeitwunsch_gueltigkeit_id)
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{
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if (!is_numeric($zeitwunsch_gueltigkeit_id))
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{
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$this->errormsg = 'Wrong parameter zeitwunsch_gueltigkeit_id.';
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return false;
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}
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$qry = '
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SELECT *
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FROM campus.tbl_zeitwunsch_gueltigkeit
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WHERE zeitwunsch_gueltigkeit_id = '.$this->db_add_param($zeitwunsch_gueltigkeit_id). '
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ORDER BY von DESC
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';
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if ($result = $this->db_query($qry))
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{
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while ($row = $this->db_fetch_object($result))
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{
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$this->zeitwunsch_gueltigkeit_id = $row->zeitwunsch_gueltigkeit_id;
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$this->von = $row->von;
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$this->bis = $row->bis;
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$this->insertamum = $row->insertamum;
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$this->insertvon = $row->insertvon;
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$this->updateamum = $row->updateamum;
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$this->updatevon = $row->updatevon;
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}
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return true;
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}
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else
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{
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$this->errormsg = 'Fehler bei der Datenbankabfrage';
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return false;
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}
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}
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/**
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* Speichert eine Zeitwunschgueltigkeit
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*/
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public function save()
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{
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if($this->new)
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{
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$qry = '
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INSERT INTO campus.tbl_zeitwunsch_gueltigkeit (mitarbeiter_uid, von, bis, insertvon)
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VALUES ('.
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$this->db_add_param($this->mitarbeiter_uid).', '.
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$this->db_add_param($this->von).', '.
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$this->db_add_param($this->bis).', '.
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$this->db_add_param($this->insertvon). ')
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RETURNING zeitwunsch_gueltigkeit_id;
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';
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}
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else
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{
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$qry = '
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UPDATE campus.tbl_zeitwunsch_gueltigkeit SET'.
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' bis = '. $this->db_add_param($this->bis). ', '.
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' updateamum = NOW(), '.
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' updatevon = '.$this->db_add_param($this->updatevon).
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' WHERE zeitwunsch_gueltigkeit_id = ' .$this->db_add_param($this->zeitwunsch_gueltigkeit_id, FHC_INTEGER);
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}
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if($result = $this->db_query($qry))
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{
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// Wenn neuer Eintrag
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if ($this->new)
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{
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if($row = $this->db_fetch_object($result))
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{
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// ZWG ID des neuen ZWG Eintrags zurueckgeben
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$this->zeitwunsch_gueltigkeit_id = $row->zeitwunsch_gueltigkeit_id;
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}
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}
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return true;
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}
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else
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{
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$this->errormsg = 'Fehler beim Speichern der Zeitwunschgueltigkeit';
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return false;
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}
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}
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/**
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* Ladet Zeitwunschgueltigkeiten einer UID mitsamt den zugehoerigen Studiensemestern.
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* @param $uid
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* @param numeric $limit limit = null liefert alle ZWG; limit = 1 liefert die letztgueltige Zeitwunsch-Gueltigkeit.
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* @param bool $activeOnly Wenn während des laufenden Semesters der Zeitwunsch geaendert werden, werden mehrere ZWG im Semester hinterlegt.
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* true liefert pro Studiensemester nur die letztgueltigen ZWG;
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* false liefert alle ZWG pro Studiensemester
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* @param string $bis string date, z.B. 2022-01-31
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* @return bool
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*/
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public function getByUID($uid, $limit = null, $activeOnly = true, $bis = null)
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{
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$studiensemester = new Studiensemester();
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$studiensemester->getNextStudiensemester();
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$qry = '
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SELECT zwg.*, studiensemester_kurzbz, start, ende
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FROM campus.tbl_zeitwunsch_gueltigkeit zwg, public.tbl_studiensemester
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WHERE zwg.mitarbeiter_uid = '.$this->db_add_param($uid);
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// Wenn Bis-Datum angegeben
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if (!is_null($bis))
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{
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// Zeitwuensche nur bis zum angegebenen Bis-Datum
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$qry.= '
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AND (von < ende AND '. $this->db_add_param($bis). '::date > start)
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';
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}
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else
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{
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// Alle Zeitwuensche
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$qry.= '
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AND (von < ende AND COALESCE(bis, '. $this->db_add_param($studiensemester->ende).'::date ) > start)
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';
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}
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// Nach Gueltigkeits-Startdatum sortieren, zuerst die zuletzt gueltigen
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$qry.= '
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ORDER BY zeitwunsch_gueltigkeit_id DESC, start DESC
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';
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// Wenn nur aktive Zeitwunschgueltigkeiten angezeigt werden sollen
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if ($activeOnly)
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{
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// ...mit distinct die zuletzt erstellten pro Studiensemester filtern
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$qry = '
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SELECT DISTINCT ON (start, studiensemester_kurzbz) start, studiensemester_kurzbz,
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ende, zeitwunsch_gueltigkeit_id, mitarbeiter_uid, von, bis,
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insertamum, insertvon, updateamum, updatevon
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FROM ('. $qry. ') temp
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ORDER BY start DESC, studiensemester_kurzbz
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';
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}
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// Wenn Limit angegeben
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if (!is_null($limit))
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{
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// Ausgabe limitieren
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$qry.= 'LIMIT '.$this->db_add_param($limit);
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}
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if ($result = $this->db_query($qry))
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{
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$this->result = array();
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while ($row = $this->db_fetch_object($result))
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{
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$obj = new StdClass();
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$obj->zeitwunsch_gueltigkeit_id = $row->zeitwunsch_gueltigkeit_id;
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$obj->von = $row->von;
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$obj->bis = $row->bis;
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$obj->studiensemester_kurzbz = $row->studiensemester_kurzbz;
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$obj->start = $row->start;
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$obj->ende = $row->ende;
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$obj->insertamum = $row->insertamum;
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$obj->insertvon = $row->insertvon;
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$obj->updateamum = $row->updateamum;
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$obj->updatevon = $row->updatevon;
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$this->result[]= $obj;
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}
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return true;
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}
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else
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{
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$this->errormsg = 'Fehler bei der Datenbankabfrage';
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return false;
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}
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}
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/**
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* Ladet Zeitwunschgueltigkeiten einer UID und eines bestimmten Semesters (defaultmaeßig nur die letztgueltige)
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* @param $uid
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* @param $studiensemester_kurzbz
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* @param null $limit limit = null liefert alle ZWG des Studiensemesters; limit = 1 liefert die letztgueltige ZWG.
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* @return bool
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*/
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public function getByStudiensemester($uid, $studiensemester_kurzbz, $limit = 1)
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{
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$qry = '
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WITH studiensemester AS
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(
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SELECT studiensemester_kurzbz, start, ende
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FROM public.tbl_studiensemester
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WHERE studiensemester_kurzbz = '.$this->db_add_param($studiensemester_kurzbz). '
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)
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SELECT zwg.*, studiensemester_kurzbz, start, ende
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FROM campus.tbl_zeitwunsch_gueltigkeit zwg, studiensemester ss
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WHERE zwg.mitarbeiter_uid = '.$this->db_add_param($uid). '
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AND (zwg.von < ss.ende AND COALESCE(zwg.bis, ss.ende) >= ss.start)
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ORDER BY von DESC
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';
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// Wenn Limit angegeben
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if (!is_null($limit))
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{
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// Ausgabe limitieren
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$qry.= 'LIMIT '.$this->db_add_param($limit);
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}
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if ($result = $this->db_query($qry))
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{
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$this->result = array();
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while ($row = $this->db_fetch_object($result))
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{
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$obj = new StdClass();
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$obj->zeitwunsch_gueltigkeit_id = $row->zeitwunsch_gueltigkeit_id;
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$obj->von = $row->von;
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$obj->bis = $row->bis;
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$obj->studiensemester_kurzbz = $row->studiensemester_kurzbz;
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$obj->start = $row->start;
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$obj->ende = $row->ende;
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$obj->insertamum = $row->insertamum;
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$obj->insertvon = $row->insertvon;
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$obj->updateamum = $row->updateamum;
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$obj->updatevon = $row->updatevon;
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$this->result[]= $obj;
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}
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return true;
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}
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else
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{
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$this->errormsg = 'Fehler bei der Datenbankabfrage';
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return false;
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}
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}
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}
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