internal static void Decline(Guid matchId)
{
Guid negotiationId = Guid.Empty;
long rowVersion = long.MinValue;
DataModel dataModel = new DataModel();
try
{
DataModel.DataLock.EnterReadLock();
// This context is used to keep track of the locks aquired for the ancillary data.
TransactionScope transactionScope = new TransactionScope();
DataModelTransaction dataModelTransaction = DataModelTransaction.Current;
MatchRow matchRow = DataModel.Match.MatchKey.Find(matchId);
if (matchRow != null)
{
WorkingOrderRow workingOrderRow = matchRow.WorkingOrderRow;
// See if there is already a pending offer.
bool isFound = false;
foreach (NegotiationRow innerNegotiationRow in matchRow.GetNegotiationRows())
{
if (innerNegotiationRow.StatusId == StatusMap.FromCode(Status.Declined))
{
throw new Exception("This offer has previously been declined.");
}
if (innerNegotiationRow.StatusId == StatusMap.FromCode(Status.Pending))
{
// Call the internal method to complete the operation.
rowVersion = innerNegotiationRow.RowVersion;
negotiationId = innerNegotiationRow.NegotiationId;
dataModel.UpdateNegotiation(
null,
null,
false,
null,
null,
new Object[] { negotiationId },
null,
rowVersion,
StatusMap.FromCode(Status.Declined));
isFound = true;
}
}
// Call the internal method to complete the operation.
if (!isFound)
{
negotiationId = Guid.NewGuid();
dataModel.CreateNegotiation(workingOrderRow.BlotterId,
null,
false,
matchId,
negotiationId,
0.0m,
StatusMap.FromCode(Status.Declined));
}
// If there's a counter offer, then notify the couter part that the offer has been declined. This will find the contra matching record.
MatchRow contraMatchRow = DataModel.Match.MatchKeyWorkingOrderIdContraOrderId.Find(
new object[] { matchRow.ContraOrderId, matchRow.WorkingOrderId });
if (contraMatchRow == null)
{
throw new Exception(string.Format("Corruption: the match record for {0}, {1} can't be found", matchRow.ContraOrderId, matchRow.WorkingOrderId));
}
// When both sides have agreed to the Negotiation, the Destination Orders are generated.
foreach (NegotiationRow contraNegotiationRow in contraMatchRow.GetNegotiationRows())
{
if (contraNegotiationRow.StatusId == StatusMap.FromCode(Status.Pending))
{
dataModel.UpdateNegotiation(
null,
null,
false,
null,
null,
new Object[] { contraNegotiationRow.NegotiationId },
null,
contraNegotiationRow.RowVersion,
StatusMap.FromCode(Status.Declined));
}
}
}
}
finally
{
// Release the tables.
DataModel.DataLock.ExitReadLock();
}
}
/// <summary>Inserts a Negotiation record using Metadata Parameters.</summary>
internal static void Offer(Guid matchId, Decimal quantity)
{
Guid negotiationId = Guid.Empty;
DataModel dataModel = new DataModel();
try
{
DataModel.DataLock.EnterReadLock();
MatchRow matchRow = DataModel.Match.MatchKey.Find(matchId);
if (matchRow != null)
{
// Rule #1: Insure that there are no pending offers.
foreach (NegotiationRow innerNegotiationRow in matchRow.GetNegotiationRows())
{
if (innerNegotiationRow.StatusId == StatusMap.FromCode(Status.Pending))
{
throw new Exception("There is already an offer pending.");
}
if (innerNegotiationRow.StatusId == StatusMap.FromCode(Status.Declined))
{
throw new Exception("This offer has previously been declined.");
}
}
// Time stamps and user stamps
Guid createdUserId = TradingSupport.UserId;
DateTime createdTime = DateTime.UtcNow;
Guid modifiedUserId = TradingSupport.UserId;
DateTime modifiedTime = createdTime;
// This will find the contra matching record.
MatchRow contraMatchRow = DataModel.Match.MatchKeyWorkingOrderIdContraOrderId.Find(
new Object[] { matchRow.ContraOrderId, matchRow.WorkingOrderId });
if (contraMatchRow == null)
{
throw new Exception(
string.Format("Corruption: the match record for {0}, {1} can't be found", matchRow.ContraOrderId, matchRow.WorkingOrderId));
}
// This is the order on the other side of the match.
WorkingOrderRow contraWorkingOrderRow = contraMatchRow.WorkingOrderRow;
// When both sides have agreed to the Negotiation, the Destination Orders are generated.
NegotiationRow contraNegotiationRow = null;
foreach (NegotiationRow innerNegotiationRow in contraMatchRow.GetNegotiationRows())
{
if (innerNegotiationRow.StatusId == StatusMap.FromCode(Status.Pending))
{
contraNegotiationRow = innerNegotiationRow;
break;
}
}
// This means that there's an offer on the other side.
if (contraNegotiationRow == null)
{
// There is no opposite side of this transaction yet. It will be placed in the negotation table and wait there
// until it times out, or the other side accepts the offer.
negotiationId = Guid.NewGuid();
dataModel.CreateNegotiation(
contraWorkingOrderRow.BlotterId,
null,
false,
contraMatchRow.MatchId,
negotiationId,
quantity,
StatusMap.FromCode(Status.Pending));
}
else
{
// At this point, there is an offer on both sides of the match for a follow-on order. We'll create orders and
// executions for both sides of the trade for the minimum agreed upon quantity.
WorkingOrderRow workingOrderRow = matchRow.WorkingOrderRow;
WorkingOrderRow contraOrderRow = contraNegotiationRow.MatchRow.WorkingOrderRow;
// The quantity of this negotiation will be the minimum of the two offers.
decimal matchedQuantity = quantity < contraNegotiationRow.Quantity ? quantity : contraNegotiationRow.Quantity;
// Create the order on this side of the trade.
Guid destinationOrderId = Guid.NewGuid();
dataModel.CreateDestinationOrder(
workingOrderRow.BlotterId,
null,
null,
createdTime,
createdUserId,
destinationId,
destinationOrderId,
null,
null,
null,
null,
workingOrderRow[DataModel.WorkingOrder.LimitPriceColumn],
modifiedTime,
modifiedUserId,
matchedQuantity,
workingOrderRow.OrderTypeId,
workingOrderRow.SecurityId,
modifiedTime,
workingOrderRow.SettlementId,
workingOrderRow.SideId,
StateMap.FromCode(State.Acknowledged),
StatusMap.FromCode(Status.New),
workingOrderRow[DataModel.WorkingOrder.StopPriceColumn],
workingOrderRow.TimeInForceId,
modifiedTime,
null,
workingOrderRow.WorkingOrderId);
// The the trade is executed at the current price.
PriceRow priceRow = DataModel.Price.PriceKey.Find(workingOrderRow.SecurityId, workingOrderRow.SettlementId);
// Create the Execution for this side of the trade.
Guid executionId = Guid.NewGuid();
dataModel.CreateExecution(
null,
workingOrderRow.BlotterId,
null,
null,
null,
createdTime,
createdUserId,
destinationOrderId,
StateMap.FromCode(State.Acknowledged),
executionId,
priceRow.LastPrice,
matchedQuantity,
null,
null,
null,
modifiedTime,
modifiedUserId,
null,
null,
null,
null,
StateMap.FromCode(State.Sent),
null,
null,
null,
null);
// There is no opposite side of this transaction yet. It will be placed in the negotation table and wait there
// until it times out, or the other side accepts the offer.
negotiationId = Guid.NewGuid();
dataModel.CreateNegotiation(
workingOrderRow.BlotterId,
executionId,
false,
matchId,
negotiationId,
quantity,
StatusMap.FromCode(Status.Accepted));
// Create an order for the agreed upon quantity.
// Create the order on this side of the trade.
Guid contraDestinationOrderId = Guid.NewGuid();
dataModel.CreateDestinationOrder(
contraWorkingOrderRow.BlotterId,
null,
null,
createdTime,
createdUserId,
destinationId,
contraDestinationOrderId,
null,
null,
null,
null,
contraWorkingOrderRow[DataModel.WorkingOrder.LimitPriceColumn],
modifiedTime,
modifiedUserId,
matchedQuantity,
contraWorkingOrderRow.OrderTypeId,
contraWorkingOrderRow.SecurityId,
modifiedTime,
contraWorkingOrderRow.SettlementId,
contraWorkingOrderRow.SideId,
StateMap.FromCode(State.Acknowledged),
StatusMap.FromCode(Status.New),
contraWorkingOrderRow[DataModel.WorkingOrder.StopPriceColumn],
contraWorkingOrderRow.TimeInForceId,
modifiedTime,
null,
contraWorkingOrderRow.WorkingOrderId);
// Create the Execution for this side of the trade.
Guid contraExecutionId = Guid.NewGuid();
dataModel.CreateExecution(
null,
contraWorkingOrderRow.BlotterId,
null,
null,
null,
createdTime,
createdUserId,
contraDestinationOrderId,
StateMap.FromCode(State.Acknowledged),
contraExecutionId,
priceRow.LastPrice,
matchedQuantity,
null,
null,
null,
modifiedTime,
modifiedUserId,
null,
null,
null,
null,
StateMap.FromCode(State.Sent),
null,
null,
null,
null);
// Update the contra offer.
dataModel.UpdateNegotiation(
contraWorkingOrderRow.BlotterId,
contraExecutionId,
false,
null,
null,
new Object[] { contraNegotiationRow.NegotiationId },
null,
contraNegotiationRow.RowVersion,
StatusMap.FromCode(Status.Accepted));
}
}
}
finally
{
// Release the tables.
DataModel.DataLock.ExitReadLock();
}
}