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https://github.com/FH-Complete/FHC-Core.git
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Christian Paminger
@@ -0,0 +1,345 @@
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<?php
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/**
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* Basisklasse für Studenten
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* @author Christian Paminger, Werner Masik
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* @version 1.0
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* @updated 07-Dez-2004
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*/
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class student extends person
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{
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/**
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* @var integer
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*/
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var $studiengang_kz;
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/**
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* @var string
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*/
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var $matrikelnr;
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/**
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* @var integer
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*/
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var $semester;
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/**
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* @var $string
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*/
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var $verband;
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/**
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* @var string
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*/
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var $gruppe;
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/**
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* @var student
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*/
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var $student;
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/**
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* @var einheit
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*/
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var $einheit;
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/**
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* @var studiengangsbezeichnung (nur zum Anzeigen, wird nicht gespeichert)
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*/
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var $stg_bezeichnung;
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/**
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* @var string fehlermeldung
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*/
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var $errormsg;
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function student($conn,$uid='')
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{
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$this->conn = $conn;
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if (strlen($uid)>0) {
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$this->uid=$uid;
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$this->load();
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}
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}
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/**
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* Speichert den Studenten in die Datenbank. Bei Fehler ist der Rueckgabewert
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* 'false' und die Fehlermeldung steht in 'errormsg'. INSERT oder DELETE wird
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* durch 'new' bestimmt.
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* @return boolean true=ok, false=fehler
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*/
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function save()
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{
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// uid vorhanden?
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if (strlen($this->uid)==0) {
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$this->errormsg='<i>uid</i> nicht gesetzt.';
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return false;
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}
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// Connection holen
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if (is_null($conn=person::getConnection())) {
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return false;
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}
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// Daten zur Person speichern
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if (!person::save()) {
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$this->errormsg.="<br/>Daten zur Person konnten nicht gespeichert werden.";
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return false;
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}
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if ($this->new) {
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$qry="INSERT INTO tbl_student(uid,studiengang_kz,matrikelnr,".
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"semester,verband,gruppe,updateamum,updatevon)".
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"values(".
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"'".$this->uid."',".
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(ctype_digit($this->studiengang_kz)?$this->studiengang_kz:'NULL').",".
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"'".$this->matrikelnr."',".
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(ctype_digit($this->semester)?$this->semester:'NULL').",".
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"'".$this->verband."','".$this->gruppe."',".
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"now(),'".$_SERVER['PHP_AUTH_USER']."'".
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")";
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} else
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{
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$qry="UPDATE tbl_student ".
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"SET studiengang_kz=".$this->studiengang_kz.",".
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"matrikelnr='".$this->matrikelnr."',".
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"semester=".(ctype_digit($this->semester)?$this->semester:'NULL').",".
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"verband='".$this->verband."',".
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"gruppe='".$this->gruppe."',".
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"updateamum=now(),updatevon='".$_SERVER['PHP_AUTH_USER']."' ".
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"WHERE uid='".$this->uid."'";
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}
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//echo "<br>".$qry;
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if(!($erg=pg_exec($conn, $qry)))
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{
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$this->errormsg=pg_errormessage($conn);
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return false;
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}
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return true;
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}
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/**
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* Ladet die Attribute des Studenten aus der Datenbank. Bei Fehler ist der
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* Rueckgabewert 'false' und die Fehlermeldung steht in 'errormsg'.
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* @return boolean true=ok, false=fehler
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*/
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function load($uid='')
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{
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// optional: uid setzen
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if (strlen($uid)>0)
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$this->uid=$uid;
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// uid vorhanden?
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if (strlen($this->uid)==0) {
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$this->errormsg='<i>uid</i> nicht gesetzt.';
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return false;
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}
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// Connection holen
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if (is_null($conn=person::getConnection())) {
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return false;
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}
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// Daten zur Person laden
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if (!person::load()) {
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$this->errormsg.="<br/>Daten zur Person konnten nicht geladen werden.";
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return false;
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}
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// Studentendaten holen
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$sql_query="SELECT s.studiengang_kz,s.matrikelnr,s.semester,s.verband,s.gruppe ".
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"FROM tbl_student as s ".
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"WHERE uid='".$this->uid."'";
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$sql_query="set datestyle to german;
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SELECT tbl_person.*, m.studiengang_kz,m.matrikelnr,m.semester,m.verband,m.gruppe,
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tbl_studiengang.studiengang_kz,tbl_studiengang.bezeichnung
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FROM tbl_person join tbl_student as m using(uid) join
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tbl_studiengang on (m.studiengang_kz=tbl_studiengang.studiengang_kz)
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WHERE uid='".$this->uid."'";
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if(!($erg=pg_exec($conn, $sql_query)))
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die(pg_errormessage($conn));
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$num_rows=pg_numrows($erg);
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if($num_rows!=1)
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{
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$this->errormsg="Zuwenige oder zuviele Ergebnisse (Anzahl: $num_rows)!";
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return false;
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}
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$row=pg_fetch_object($erg,0);
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$this->studiengang_kz=$row->studiengang_kz;
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$this->matrikelnr=$row->matrikelnr;
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$this->semester=$row->semester;
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$this->verband=$row->verband;
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$this->gruppe=$row->gruppe;
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$this->uid=$row->uid;
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$this->titel=$row->titel;
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$this->vornamen=$row->vornamen;
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$this->nachname=$row->nachname;
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$this->gebdatum=$row->gebdatum;
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$this->gebort=$row->gebort;
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$this->gebzeit=$row->gebzeit;
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$this->foto=$row->foto;
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$this->anmerkungen=$row->anmerkungen;
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$this->aktiv=$row->aktiv=='t'?true:false;
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$this->email=$row->email;
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$this->homepage=$row->homepage;
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$this->updateamum=$row->updateamum;
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$this->updatevon=$row->updatevon;
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$this->stg_bezeichnung=$row->bezeichnung;
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// todo: einheit
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$result[]=$this;
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return $result;
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//return true;
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}
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/**
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* Loescht den Studenten aus der Datenbank. Bei Fehler ist der Rueckgabewert
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* 'false' und die Fehlermeldung steht in 'errormsg'.
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* @return boolean true=ok, false=fehler
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*/
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function delete()
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{
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return false;
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}
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/**
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* Rueckgabewert ist die Anzahl der Ergebnisse. Bei Fehler negativ und die
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* Fehlermeldung liegt in errormsg.
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* Wenn der Parameter stg_kz NULL ist tritt einheit_kurzbzb in Kraft.
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* @param string $einheit_kurzbz Einheit
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* @param string grp Gruppe
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* @param string ver Verband
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* @param integer sem Semester
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* @param integer stg_kz Kennzahl des Studiengangs
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* @return integer Anzahl der gefundenen Einträge; <b>negativ</b> bei Fehler
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*/
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function getStudents($einheit_kurzbz, $grp, $ver, $sem, $stg_kz)
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{
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if (is_null($conn=person::getConnection())) {
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return false;
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}
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$join = '';
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$where = '';
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if (strlen($einheit_kurzbz)>0)
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{
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// einheit?
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$join=" join tbl_einheitstudent on (m.uid=tbl_einheitstudent.uid) ";
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$where=" tbl_einheitstudent.einheit_kurzbz='".$einheit_kurzbz."'";
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} else
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{
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if (strlen($grp)>0)
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{
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// Gruppe
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$where.=(strlen($where)>0?' and ':'')." m.gruppe='".$grp."' ";
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}
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if (strlen($ver)>0)
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{
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// Verband
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$where.=(strlen($where)>0?' and ':'')." m.verband='".$ver."' ";
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}
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if (strlen($sem)>0)
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{
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// Semester
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$where.=(strlen($where)>0?' and ':'')." m.semester=".$sem." ";
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}
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if (strlen($stg_kz)>0)
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{
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// Studiengang
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$where.=(strlen($where)>0?' and ':'')." m.studiengang_kz='".$stg_kz."' ";
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}
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}
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$sql_query="set datestyle to german;SELECT tbl_person.*,".
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"m.studiengang_kz,m.matrikelnr,m.semester,m.verband,m.gruppe, ".
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"tbl_studiengang.studiengang_kz,tbl_studiengang.bezeichnung ".
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"FROM tbl_person join tbl_student as m using(uid) join ".
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"tbl_studiengang on (m.studiengang_kz=tbl_studiengang.studiengang_kz) $join ".
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(strlen($where)>1?'WHERE '.$where:'').
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"ORDER by upper(tbl_person.nachname),upper(tbl_person.vornamen)";
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//echo $sql_query;
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if(!($erg=@pg_exec($conn, $sql_query))) {
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$this->errormsg=pg_errormessage($conn);
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return false;
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}
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$num_rows=pg_numrows($erg);
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$result=array();
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for($i=0;$i<$num_rows;$i++)
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{
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$row=pg_fetch_object($erg,$i);
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$l=new student($conn);
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// Personendaten
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$l->uid=$row->uid;
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$l->titel=$row->titel;
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$l->vornamen=$row->vornamen;
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$l->nachname=$row->nachname;
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$l->gebdatum=$row->gebdatum;
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$l->gebort=$row->gebort;
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$l->gebzeit=$row->gebzeit;
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$l->foto=$row->foto;
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$l->anmerkungen=$row->anmerkungen;
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$l->aktiv=$row->aktiv=='t'?true:false;
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$l->email=$row->email;
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$l->homepage=$row->homepage;
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$l->updateamum=(isset($row->updateamum)?$row->updateamum:'');
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$l->updatevon=(isset($row->updatevon)?$row->updatevon:'');
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// Studentendaten
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$l->matrikelnr=$row->matrikelnr;
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$l->gruppe=$row->gruppe;
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$l->verband=$row->verband;
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$l->semester=$row->semester;
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$l->studiengang_kz=$row->studiengang_kz;
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$l->stg_bezeichnung=$row->bezeichnung;
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// student in Array speichern
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$result[]=$l;
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}
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return $result;
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}
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/**
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* gibt array mit allen Studenten zurück
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* @return array Studenten
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*/
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function getAll() {
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if (is_null($conn=person::getConnection())) {
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return false;
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}
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$sql_query="set datestyle to german;SELECT tbl_person.*,".
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"m.matrikelnr,m.semester,m.verband,m.gruppe, ".
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"tbl_studiengang.studiengang_kz,tbl_studiengang.bezeichnung ".
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"FROM tbl_person join tbl_student as m using(uid) ".
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" join tbl_studiengang on (m.studiengang_kz=tbl_studiengang.studiengang_kz) ".
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"ORDER by upper(tbl_person.nachname),upper(tbl_person.vornamen)";
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//echo $sql_query;
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if(!($erg=@pg_exec($conn, $sql_query))) {
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$this->errormsg=pg_errormessage($conn);
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return false;
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}
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$num_rows=pg_numrows($erg);
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$result=array();
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for($i=0;$i<$num_rows;$i++)
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{
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$row=pg_fetch_object($erg,$i);
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$l=new student($conn);
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// Personendaten
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$l->uid=$row->uid;
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$l->titel=$row->titel;
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$l->vornamen=$row->vornamen;
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$l->nachname=$row->nachname;
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$l->gebdatum=$row->gebdatum;
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$l->gebort=$row->gebort;
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$l->gebzeit=$row->gebzeit;
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$l->foto=$row->foto;
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$l->anmerkungen=$row->anmerkungen;
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$l->aktiv=$row->aktiv=='t'?true:false;
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$l->email=$row->email;
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$l->homepage=$row->homepage;
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$l->updateamum=$row->updateamum;
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$l->updatevon=$row->updatevon;
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// Studentendaten
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$l->matrikelnummer=$row->matrikelnummer;
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$l->gruppe=$row->gruppe;
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$l->verband=$row->verband;
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$l->semester=$row->semester;
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$l->studiengang_kz=$row->studiengang_kz;
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$l->stg_bezeichnung=$row->bezeichnung;
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// student in Array speichern
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$result[]=$l;
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}
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return $result;
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}
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}
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?>
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