public SequenceManager(DataDestination dataDestination)
{
_dataDestination = dataDestination;
_sequenceIdToSequenceHash = new CopyOnWriteDictionary();
#if (NET_1_1)
_parametersToSequenceIdHash = new Hashtable(new ListHashCodeProvider(), new ListComparer());
#else
_parametersToSequenceIdHash = new Hashtable(new ListHashCodeProvider());
#endif
_itemIdToSequenceIdMapHash = new Hashtable();
_clientIdToSequenceHash = new Hashtable();
_itemIdToItemHash = new Hashtable();
}
public static Identity GetIdentity(object item, DataDestination destination)
{
IdentityConfiguration[] keys = destination.GetIdentityKeys();
Identity identity = new Identity(item);
foreach(IdentityConfiguration ic in keys)
{
string key = ic.Property;
PropertyInfo pi = item.GetType().GetProperty(key);
if( pi != null )
{
try
{
identity[key] = pi.GetValue( item, new object[0] );
}
catch(Exception ex)
{
throw new FluorineException(__Res.GetString(__Res.Identity_Failed, key), ex);
}
}
else
{
try
{
FieldInfo fi = item.GetType().GetField(key, BindingFlags.Public | BindingFlags.Instance);
if( fi != null )
{
identity[key] = fi.GetValue( item );
}
}
catch(Exception ex)
{
throw new FluorineException(__Res.GetString(__Res.Identity_Failed, key), ex);
}
}
}
return identity;
}
private UpdateCollectionMessage CreateUpdateCollectionMessage(DataDestination dataDestination, Sequence sequence)
{
UpdateCollectionMessage updateCollectionMessage = new UpdateCollectionMessage();
updateCollectionMessage.clientId = this.ClientId;
updateCollectionMessage.updateMode = UpdateCollectionMessage.ServerUpdate;
// The unique identifier for the collection that was updated. For a collection filled with the
// DataService.fill() method this contains an Array of the parameters specified.
updateCollectionMessage.collectionId = sequence.Parameters;
updateCollectionMessage.destination = dataDestination.Id;
updateCollectionMessage.correlationId = this.CorrelationId;
updateCollectionMessage.messageId = "srv:" + Guid.NewGuid().ToString("D") + ":" + _idCounter.ToString();
System.Threading.Interlocked.Increment(ref _idCounter);
return updateCollectionMessage;
}
internal void GenerateUpdateCollectionMessage(int updateType, DataDestination dataDestination, Sequence sequence, int position, Identity identity)
{
UpdateCollectionMessage updateCollectionMessage = CreateUpdateCollectionMessage(dataDestination, sequence);
updateCollectionMessage.AddItemIdentityChange(updateType, position, identity);
if (updateCollectionMessage.collectionId != null)
_updateCollectionMessages[updateCollectionMessage.collectionId] = updateCollectionMessage;
else
{
//without fill parameters
_updateCollectionMessages[new object[0]] = updateCollectionMessage;
}
}
/// <summary>
/// Clients can call this method to commit the transaction. You should only use this method if
/// you used the begin method to create the DataServiceTransaction.
/// Otherwise, the gateway will commit or rollback the transaction as necessary.
/// </summary>
public void Commit()
{
if (_rollbackOnly)
{
Rollback();
return;
}
try
{
ProcessRefreshFills();
_pushMessages = new ArrayList();
for (int i = 0; i < _processedMessageBatches.Count; i++)
{
MessageBatch messageBatch = _processedMessageBatches[i] as MessageBatch;
if (messageBatch.Messages != null && messageBatch.Messages.Count > 0)
{
DataDestination dataDestination = _dataService.GetDestination(messageBatch.IncomingMessage) as DataDestination;
try
{
dataDestination.SequenceManager.ManageMessageBatch(messageBatch, this);
}
catch (Exception ex)
{
MessageException messageException = new MessageException(ex);
ErrorMessage errorMessage = messageException.GetErrorMessage();
errorMessage.correlationId = messageBatch.IncomingMessage.messageId;
errorMessage.destination = messageBatch.IncomingMessage.destination;
messageBatch.Messages.Clear();
messageBatch.Messages.Add(errorMessage);
}
for (int j = 0; j < messageBatch.Messages.Count; j++)
{
IMessage message = messageBatch.Messages[j] as IMessage;
if (!(message is ErrorMessage))
{
_pushMessages.Add(message);
}
}
}
_outgoingMessages.AddRange(messageBatch.Messages);
}
for (int i = 0; i < _pushMessages.Count; i++)
{
IMessage message = _pushMessages[i] as IMessage;
DataMessage dataMessage = message as DataMessage;
if (dataMessage != null)
{
PushMessage(GetSubscribers(message), message);
}
}
foreach (DictionaryEntry entry in _clientUpdateCollectionMessages)
{
UpdateCollectionMessage updateCollectionMessage = entry.Value as UpdateCollectionMessage;
_outgoingMessages.Add(updateCollectionMessage);
PushMessage(GetSubscribers(updateCollectionMessage), updateCollectionMessage);
}
foreach (DictionaryEntry entry in _updateCollectionMessages)
{
UpdateCollectionMessage updateCollectionMessage = entry.Value as UpdateCollectionMessage;
_outgoingMessages.Add(updateCollectionMessage);
PushMessage(GetSubscribers(updateCollectionMessage), updateCollectionMessage);
}
}
finally
{
_transactionState = TransactionState.Committed;
}
}
public override object ServiceMessage(IMessage message)
{
CommandMessage commandMessage = message as CommandMessage;
if (commandMessage != null)
{
//Sub/unsub handled by base class
return(base.ServiceMessage(commandMessage));
}
else
{
AsyncMessage responseMessage = null;
DataMessage dataMessage = message as DataMessage;
DataDestination dataDestination = this.GetDestination(dataMessage) as DataDestination;
if (dataDestination.SubscriptionManager.GetSubscriber(dataMessage.clientId as string) == null)
{
//Subscribe here as DS doesn't send a separate subscribe command
CommandMessage commandMessageSubscribe = new CommandMessage();
commandMessageSubscribe.destination = dataDestination.Id;
commandMessageSubscribe.operation = CommandMessage.SubscribeOperation;
commandMessageSubscribe.clientId = dataMessage.clientId as string;
string endpointId = dataMessage.GetHeader(MessageBase.EndpointHeader) as string;
commandMessageSubscribe.headers[MessageBase.EndpointHeader] = endpointId;
string flexClientIdHeader = dataMessage.GetHeader(MessageBase.FlexClientIdHeader) as string;
if (flexClientIdHeader != null)
{
commandMessageSubscribe.headers[MessageBase.FlexClientIdHeader] = flexClientIdHeader;
}
IEndpoint endpoint = GetMessageBroker().GetEndpoint(endpointId);
endpoint.ServiceMessage(commandMessageSubscribe);//route through the endpoint again
//base.ServiceMessage(commandMessageSubscribe);
}
switch (dataMessage.operation)
{
case DataMessage.FillOperation:
responseMessage = ExecuteFillOperation(message);
break;
case DataMessage.GetOperation:
responseMessage = ExecuteGetOperation(message);
break;
case DataMessage.BatchedOperation:
case DataMessage.MultiBatchOperation:
case DataMessage.TransactedOperation:
responseMessage = ExecuteMultiBatchOperation(message);
break;
case DataMessage.PageItemsOperation:
responseMessage = ExecutePageItemsOperation(message);
break;
case DataMessage.PageOperation:
responseMessage = ExecutePageOperation(message);
break;
case DataMessage.ReleaseCollectionOperation:
responseMessage = ExecuteReleaseCollectionOperation(message);
break;
case DataMessage.GetSequenceIdOperation:
responseMessage = ExecuteGetSequenceIdOperation(message);
break;
case DataMessage.ReleaseItemOperation:
responseMessage = ExecuteReleaseItemOperation(message);
break;
default:
if (log.IsErrorEnabled)
{
log.Error(__Res.GetString(__Res.DataService_Unknown, dataMessage.operation));
}
responseMessage = new AcknowledgeMessage();
break;
}
responseMessage.clientId = message.clientId;
responseMessage.correlationId = message.messageId;
//Dump();
return(responseMessage);
}
}
