public boolean leaveEvent(int userID, int eventID) {
UserModel userM = new UserModel();
int userId = userM.getUserIdByAccountId(userID);
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con =
DriverManager.getConnection("jdbc:mysql://160.153.16.42:3306/Enterprise_Gym", user, pass);
PreparedStatement ps2 = null;
int i = 0;
String sqlOption = "DELETE from event_has_user where user_iduser=? and event_idevent=?";
ps2 = con.prepareStatement(sqlOption);
ps2.setInt(1, userId);
ps2.setInt(2, eventID);
i = ps2.executeUpdate();
con.close();
if (i == 0) {
return false;
} else {
return true;
}
} catch (Exception e) {
System.out.println("connection to db failed");
e.printStackTrace();
return false;
}
}
public Boolean isAttending(int id, int userid) {
UserModel userM = new UserModel();
int userId = userM.getUserIdByAccountId(userid);
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con =
DriverManager.getConnection("jdbc:mysql://160.153.16.42:3306/Enterprise_Gym", user, pass);
Convertors convertor = new Convertors();
ResultSet rs = null;
PreparedStatement ps = null;
String sqlOption = "SELECT * FROM event_has_user where event_idevent=? and user_iduser=?";
ps = con.prepareStatement(sqlOption);
ps.setInt(1, id);
ps.setInt(2, userId);
rs = ps.executeQuery();
if (rs.next()) {
System.out.println("true");
return true;
} else {
System.out.println("false");
return false;
}
} catch (Exception et) {
System.out.println("Can't find user" + et);
return false;
}
}
public ResultSet getUserByNIP(String nip) throws SQLException {
ResultSet profile;
profile = user_model.SelectById(nip);
if (profile.next()) {
return profile;
} else {
return profile = null;
}
}
