// Delete rooms from a location
public ReturnTuple<Boolean> deleteRooms(int id, String location, Timestamp timestamp)
throws RemoteException, TransactionAbortedException, InvalidTransactionException {
if (!isMaster) {
System.out.println("Slave retransmitting deleteRooms to master");
return this.getMaster().deleteRooms(id, location, timestamp);
} else {
timestamp.stamp();
DeleteRoomsRMICommand dr = new DeleteRoomsRMICommand(roomGroup, id, location);
dr.setTimestampObject(timestamp);
ReturnTuple<Boolean> result = null;
try {
overseer.validTransaction(id);
lm.Lock(id, Hotel.getKey(location), dr.getRequiredLock());
dr.execute();
result = dr.success;
if (result.result) overseer.addCommandToTransaction(id, dr);
} catch (DeadlockException d) {
timestamp.stamp();
overseer.abort(id);
timestamp.stamp();
throw new TransactionAbortedException(timestamp);
} catch (TransactionAbortedException tae) {
tae.t = timestamp;
throw tae;
} catch (InvalidTransactionException ite) {
ite.t = timestamp;
throw ite;
}
result.timestamp.stamp();
return result;
}
}
// Returns room price at this location
public ReturnTuple<Integer> queryRoomsPrice(int id, String location, Timestamp timestamp)
throws RemoteException, TransactionAbortedException, InvalidTransactionException {
if (!isMaster) {
System.out.println("Slave retransmitting queryRoomsPrice to master");
return this.getMaster().queryRoomsPrice(id, location, timestamp);
} else {
timestamp.stamp();
QueryRoomsPriceRMICommand qrp = new QueryRoomsPriceRMICommand(roomGroup, id, location);
qrp.setTimestampObject(timestamp);
ReturnTuple<Integer> result = null;
try {
overseer.validTransaction(id);
lm.Lock(id, Hotel.getKey(location), qrp.getRequiredLock());
qrp.execute();
result = qrp.price;
} catch (DeadlockException d) {
timestamp.stamp();
overseer.abort(id);
timestamp.stamp();
throw new TransactionAbortedException(timestamp);
} catch (TransactionAbortedException tae) {
tae.t = timestamp;
throw tae;
} catch (InvalidTransactionException ite) {
ite.t = timestamp;
throw ite;
}
result.timestamp.stamp();
return result;
}
}
/* reserve an itinerary */
public ReturnTuple<Boolean> itinerary(
int id,
int customer,
Vector flightNumbers,
String location,
boolean Car,
boolean Room,
Timestamp timestamp)
throws RemoteException, TransactionAbortedException, InvalidTransactionException {
if (!isMaster) {
System.out.println("Slave retransmitting itinerary to master");
return this.getMaster()
.itinerary(id, customer, flightNumbers, location, Car, Room, timestamp);
} else {
timestamp.stamp();
ItineraryRMICommand i =
new ItineraryRMICommand(
carGroup, flightGroup, roomGroup, id, customer, flightNumbers, location, Car, Room);
i.setTimestampObject(timestamp);
ReturnTuple<Boolean> result = null;
try {
overseer.validTransaction(id);
lm.Lock(id, Customer.getKey(customer), i.getRequiredLock());
lm.Lock(id, ResImpl.Car.getKey(location), i.getRequiredLock());
lm.Lock(id, Hotel.getKey(location), i.getRequiredLock());
for (Object flightNo : flightNumbers) {
int flightNum = Integer.parseInt((String) flightNo);
lm.Lock(id, Flight.getKey(flightNum), i.getRequiredLock());
}
i.execute();
result = i.success;
if (result.result && !i.error()) overseer.addCommandToTransaction(id, i);
} catch (DeadlockException d) {
timestamp.stamp();
overseer.abort(id);
timestamp.stamp();
throw new TransactionAbortedException(timestamp);
} catch (TransactionAbortedException tae) {
tae.t = timestamp;
throw tae;
} catch (InvalidTransactionException ite) {
ite.t = timestamp;
throw ite;
}
result.timestamp.stamp();
return result;
}
}
// return a bill
public ReturnTuple<String> queryCustomerInfo(int id, int customerID, Timestamp timestamp)
throws RemoteException, TransactionAbortedException, InvalidTransactionException {
if (!isMaster) {
System.out.println("Slave retransmitting queryCustomerInfo to master");
return this.getMaster().queryCustomerInfo(id, customerID, timestamp);
} else {
timestamp.stamp();
QueryCustomerInfoRMICommand qci =
new QueryCustomerInfoRMICommand(carGroup, flightGroup, roomGroup, id, customerID);
qci.setTimestampObject(timestamp);
ReturnTuple<String> result = null;
try {
Vector<Integer> flightNos;
Vector<String> locations;
overseer.validTransaction(id);
lm.Lock(id, Customer.getKey(customerID), qci.getRequiredLock());
qci.execute();
flightNos = qci.getCustomerFlightReservations();
for (int flightNo : flightNos) {
lm.Lock(id, Flight.getKey(flightNo), qci.getRequiredLock());
}
locations = qci.getCustomerRoomReservations();
for (String location : locations) {
lm.Lock(id, Hotel.getKey(location), qci.getRequiredLock());
}
locations = qci.getCustomerCarReservations();
for (String location : locations) {
lm.Lock(id, Car.getKey(location), qci.getRequiredLock());
}
qci.execute();
result = qci.customerInfo;
} catch (DeadlockException d) {
timestamp.stamp();
overseer.abort(id);
timestamp.stamp();
throw new TransactionAbortedException(timestamp);
} catch (TransactionAbortedException tae) {
tae.t = timestamp;
throw tae;
} catch (InvalidTransactionException ite) {
ite.t = timestamp;
throw ite;
}
result.timestamp.stamp();
return result;
}
}