// Reserve an item.
@Override
public boolean reserveCustomer(int id, int customerId, String key, String location, int price) {
synchronized (syncLock) {
Customer cust = (Customer) readData(id, Customer.getKey(customerId));
if (cust == null) {
Trace.warn(
"RM::reserveItem("
+ id
+ ", "
+ customerId
+ ", "
+ key
+ ", "
+ location
+ ") failed: customer doesn't exist.");
return false;
} else {
// Do reservation.
cust.reserve(key, location, price);
writeData(id, cust.getKey(), cust);
Trace.warn(
"RM::reserveItem(" + id + ", " + customerId + ", " + key + ", " + location + ") OK.");
return true;
}
}
}
// reserve an item
protected boolean reserveItem(int id, int customerID, String key, String location) {
Trace.info(
"RM::reserveItem( "
+ id
+ ", customer="
+ customerID
+ ", "
+ key
+ ", "
+ location
+ " ) called");
// Read customer object if it exists (and read lock it)
Customer cust = (Customer) readData(id, Customer.getKey(customerID));
if (cust == null) {
Trace.warn(
"RM::reserveCar( "
+ id
+ ", "
+ customerID
+ ", "
+ key
+ ", "
+ location
+ ") failed--customer doesn't exist");
return false;
}
// check if the item is available
ReservableItem item = (ReservableItem) readData(id, key);
if (item == null) {
Trace.warn(
"RM::reserveItem( "
+ id
+ ", "
+ customerID
+ ", "
+ key
+ ", "
+ location
+ ") failed--item doesn't exist");
return false;
} else if (item.getCount() == 0) {
Trace.warn(
"RM::reserveItem( "
+ id
+ ", "
+ customerID
+ ", "
+ key
+ ", "
+ location
+ ") failed--No more items");
return false;
} else {
Flight tempItem =
new Flight(Integer.parseInt(item.getLocation()), item.getCount(), item.getPrice());
tempItem.setReserved(item.getReserved());
Customer temp = cust.clone();
temp.setType(1);
if (readDataFromLog(id, cust.getKey(), id) == null) {
writeDataToLog(id, cust.getKey(), temp);
}
cust.reserve(key, location, item.getPrice());
writeData(id, cust.getKey(), cust);
// decrease the number of available items in the storage
item.setCount(item.getCount() - 1);
item.setReserved(item.getReserved() + 1);
if (readDataFromLog(id, item.getKey(), id) == null) {
tempItem.setType(0);
writeDataToLog(id, item.getKey(), tempItem);
}
Trace.info(
"RM::reserveItem( "
+ id
+ ", "
+ customerID
+ ", "
+ key
+ ", "
+ location
+ ") succeeded");
return true;
}
}
