public bool Equals(Reservation other)
{
if (null == other)
{
return false;
}
// compare ids
if (!this.Id.Equals(other.Id))
{
return false;
}
// compare lists
if (this.resourceList.Count() != other.resourceList.Count())
{
return false;
}
// compare each resource
foreach (var resource in this.resourceList)
{
if (!other.resourceList.Contains(resource))
{
return false;
}
}
return true;
}
private static void ReadReservations(Transaction context, StorageManager storage, Reservation[] data)
{
bool createTransaction = (null == context);
if (createTransaction)
{
context = new Transaction();
}
foreach (var item in data)
{
Reservation output = null;
if (!storage.Read(context, item.Id, out output))
{
Assert.Fail("{0}: Read of [{1}] was un-successful.", context.Id.ToString(), item.Id.ToString());
}
Assert.AreEqual<Reservation>(item, output, "{0}: Read was un-successful.", context.Id.ToString());
}
if (createTransaction)
{
storage.Prepare(context);
storage.Commit(context);
}
}
private static void WriteReservations(Transaction context, StorageManager storage, Reservation[] data, bool abort)
{
bool createTransaction = (null == context);
if (createTransaction)
{
context = new Transaction();
}
// write the data
foreach (var item in data)
{
storage.Write(context, item.Id, item);
}
// read the data in the same transaction
ReadReservations(context, storage, data);
if (createTransaction
&& !abort)
{
storage.Prepare(context);
storage.Commit(context);
}
else if (createTransaction
&& abort)
{
storage.Abort(context);
}
}
public bool Reserve(Transaction context, Customer customer, RID resource)
{
// enlist with TM
this.Enlist(context);
// get the resource info
Resource item = null;
bool result = this.dataStore.Read(context, resource, out item);
if (!result)
{
throw new InvalidOperationException(resource + " does not exist!");
}
if (item.getCount() <= 0)
{
return false;
}
// get the reservation record
Reservation data = null;
result = this.dataStore.Read(context, customer, out data);
if (!result)
{
data = new Reservation(customer);
}
// only allow one reservation per item
if (data.Resources.Contains(resource))
{
return false;
}
// update the data
data.Resources.Add(resource);
item.decrCount();
// write back the records
result = this.dataStore.Write(context, customer, data);
if (!result)
{
return result;
}
result = this.dataStore.Write(context, resource, item);
if (!result)
{
return result;
}
return true;
}
