Imbus/MovieBookingSystem
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Transaction

Browse source
This commit is contained in:
Imbus 2024-02-09 09:17:22 +01:00
parent 570b0c319b
commit 92441ad91f
1 changed files with 18 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
src/main/java/datamodel/Database.java
View file

@ -204,8 +204,15 @@ public Show getShowData(String movie, String date) {
System.out.println("Adding reservation for " + username + " for " + movie + " on " + date); System.out.println("Adding reservation for " + username + " for " + movie + " on " + date);
try { try(Statement stmt = conn.createStatement()) {
Statement stmt = conn.createStatement(); conn.setAutoCommit(false);
Show s = getShowData(movie, date);
if (s.getSeats() <= 0) {
System.err.println("addReservation: no free seats for " + movie + " on " + date);
return null;
}
ResultSet rs = stmt.executeQuery("SELECT * FROM Users WHERE username = '" + username + "'"); ResultSet rs = stmt.executeQuery("SELECT * FROM Users WHERE username = '" + username + "'");
if (rs.next()) { if (rs.next()) {
int user_id = rs.getInt("id"); int user_id = rs.getInt("id");
@ -216,14 +223,23 @@ public Show getShowData(String movie, String date) {
String theater = rs.getString("theater_id"); String theater = rs.getString("theater_id");
stmt.executeUpdate("INSERT INTO Reservations (user_id, showing_id) VALUES (" + user_id + ", " + showing_id + ")"); stmt.executeUpdate("INSERT INTO Reservations (user_id, showing_id) VALUES (" + user_id + ", " + showing_id + ")");
System.out.println("Reservation added"); System.out.println("Reservation added");
conn.commit();
conn.setAutoCommit(true);
int bookingId = stmt.getGeneratedKeys().getInt(1); int bookingId = stmt.getGeneratedKeys().getInt(1);
return new Reservation(bookingId, movie, date, theater); return new Reservation(bookingId, movie, date, theater);
} }
rs.close();
} }
else { else {
System.err.println(String.format("addReservation: user %s not found", username)); System.err.println(String.format("addReservation: user %s not found", username));
} }
conn.commit();
} catch (SQLException e) { } catch (SQLException e) {
try {
conn.rollback();
} catch (SQLException e2) {
e2.printStackTrace();
}
e.printStackTrace(); e.printStackTrace();
} }
return null; return null;