Retrieve a user's id and keep it as long as the session is active in jsf - session

Question

I have a web application in jsf where I would retrieve the id of the user for reuse in other managedbeans.
Each user has a session that is created as soon as it is autehtification the data are stored in a Mysql DB. I would like to retrieve and keep the id of the user store as long as the session is active. Can you help me please?
this are my managedBean
#ManagedBean
#SessionScoped
public class ProfManagedBeans {
private int idp;
private String email, pwd;
public HttpSession hs;
public ProfManagedBeans() {
}
public int getIdp() {
return idp;
}
public void setIdp(int id) {
this.idp = id;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public static PreparedStatement pstmt=null;
public static ResultSet rs = null;
public String query="";
public int dbid;
public String dbemail, dbpwd;
public String getDbemail() {
return dbemail;
}
public String getDbpwd() {
return dbpwd;
}
public void dbData(String uEmail){
DbConnect.getConnection();
query = "SELECT * FROM professeur where email='" + uEmail +"'";
try {
pstmt = DbConnect.conn.prepareStatement(query);
ResultSet rs = pstmt.executeQuery();
while(rs.next()){
dbid = rs.getInt("id_pr");
dbemail = rs.getString("email");
dbpwd = rs.getString("pwd");
}
} catch (SQLException e) {
e.printStackTrace();
System.out.println("Exception " + e);
}
}
public int getIdProf(){
dbData(email);
String ids = hs.getId();
if(ids == hs.getId()){
idp = dbid;
return idp;
}
return 0;
}
public String login(){
dbData(email);
if (email.equals(dbemail)==true&&pwd.equals(dbpwd)==true) {
hs = Util.getSession();
hs.setAttribute("email", dbemail);
System.out.println(hs.getId());
System.out.println(getIdProf());
return "success.xhtml";
}
else {
FacesMessage fm = new FacesMessage("Email error", "ERROR MSG");
fm.setSeverity(FacesMessage.SEVERITY_ERROR);
FacesContext.getCurrentInstance().addMessage(null, fm);
return "LoginProf.xhtml";
}
}
public String logout() {
hs.invalidate();
return "/LoginProf.xhtml";
}
}
public class QuestionManagedBeans {
private int id,id_pr;
private String nomDesc, question, type;
private String reponse;
private double noteV, noteF;
private String niveau, matiere,chapitre, explication;
public static PreparedStatement pstmt=null;
public static ResultSet rs = null;
public String query="";
private ArrayList<Niveau> list ;
public QuestionManagedBeans() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNomDesc() {
return nomDesc;
}
public void setNomDesc(String nomDesc) {
this.nomDesc = nomDesc;
}
public String getQuestion() {
return question;
}
public void setQuestion(String question) {
this.question = question;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getReponse() {
return reponse;
}
public void setReponse(String reponse) {
this.reponse = reponse;
}
public double getNoteV() {
return noteV;
}
public void setNoteV(double noteV) {
this.noteV = noteV;
}
public double getNoteF() {
return noteF;
}
public void setNoteF(double noteF) {
this.noteF = noteF;
}
public String getNiveau() {
return niveau;
}
public void setNiveau(String niveau) {
this.niveau = niveau;
}
public String getMatiere() {
return matiere;
}
public void setMatiere(String matiere) {
this.matiere = matiere;
}
public String getExplication() {
return explication;
}
public String getChapitre() {
return chapitre;
}
public void setChapitre(String chapitre) {
this.chapitre = chapitre;
}
public void setExplication(String explication) {
this.explication = explication;
}
public int getId_pr() {
return id_pr;
}
public void setId_pr() {
ProfManagedBeans p = new ProfManagedBeans();
this.id_pr = p.getIdProf();
}
public boolean insertQuestion() throws SQLException {
Question q = new Question(id,nomDesc, question, type,reponse,noteV, noteF,niveau, matiere, chapitre ,explication,id_pr);
setNomDesc("");
setQuestion("");
setType("");
setReponse("");
setNoteV(0.0);
setNoteF(0.0);
setNiveau("");
setMatiere("");
setChapitre("");
setExplication("");
return new InsertDao().insertQuestionTF(q);
}
}
I want to recover the id of the proffessor as soon as it is authenticated to be able to add it to the question table
In InsertDao.java
public boolean insertQuestionTF(Question qu) throws SQLException{
DbConnect.getConnection();
ProfManagedBeans p = new ProfManagedBeans();
query ="INSERT INTO `question_tf` (`nomdesc`, `question`, `type`, `reponse`, `noteV`, `noteF`, `niveau`, `matiere`, `chapitre`, `explication`, `id_pr`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
pstmt = DbConnect.conn.prepareStatement(query);
pstmt.setString(1, qu.getNomDesc());
pstmt.setString(2, qu.getQuestion());
pstmt.setString(3, qu.getType());
pstmt.setString(4, qu.getReponse());
pstmt.setDouble(5, qu.getNoteV());
pstmt.setDouble(6, qu.getNoteF());
pstmt.setString(7, qu.getNiveau());
pstmt.setString(8, qu.getMatiere());
pstmt.setString(9, qu.getChapitre());
pstmt.setString(10, qu.getExplication());
pstmt.setInt(11, p.getIdProf());
System.out.println("insert " + p.getIdProf());
if (pstmt == null) {
throw new SQLException();
} else {
return pstmt.executeUpdate() > 0;
}
}