private static void DeleteMatch(MatchRow matchRow)
{
for (int deadlockRetry = 0; deadlockRetry < deadlockRetiesMax; deadlockRetry++)
{
try
{
using (TransactionScope transactionScope = new TransactionScope())
{
// This provides a context for any transactions.
DataModelTransaction dataModelTransaction = DataModelTransaction.Current;
long rowVersion;
Guid matchId;
matchRow.AcquireReaderLock(dataModelTransaction.TransactionId, DataModel.LockTimeout);
try
{
if (matchRow.RowState == System.Data.DataRowState.Detached ||
matchRow.RowState == System.Data.DataRowState.Deleted)
{
continue;
}
rowVersion = matchRow.RowVersion;
matchId = matchRow.MatchId;
}
finally
{
matchRow.ReleaseReaderLock(dataModelTransaction.TransactionId);
}
DataModel dataModel = new DataModel();
dataModel.DestroyMatch(new object[] { matchId }, rowVersion);
transactionScope.Complete();
return;
} //end using
}
catch (System.Data.SqlClient.SqlException sqlEx)
{
if (FluidTrade.Core.Utilities.SqlErrorHelper.IsDeadlockException(sqlEx))
{
if (deadlockRetry == deadlockRetiesMax - 1)
{
throw;
}
FluidTrade.Core.EventLog.Warning("Deadlock exception\r\n{0}: {1}\r\n{2}", sqlEx.Message, sqlEx.ToString(), sqlEx.StackTrace);
}
else
{
throw;
}
}
} //end deadlock retry
}
/// <summary>
/// Delete a match
/// </summary>
/// <returns>True for sucess</returns>
public override ErrorCode Delete(Records.Match record)
{
if (record.RowId == null || DataModel.Match.MatchKey.Find(record.RowId) == null)
{
return(ErrorCode.RecordNotFound);
}
DataModel dataModel = new DataModel();
MatchRow matchRow = DataModel.Match.MatchKey.Find(record.RowId);
DataModelTransaction dataModelTransaction = DataModelTransaction.Current;
matchRow.AcquireReaderLock(dataModelTransaction);
if (!TradingSupport.HasAccess(dataModelTransaction, matchRow.BlotterId, AccessRight.FullControl))
{
return(ErrorCode.AccessDenied);
}
MatchRow contraMatchRow = DataModel.Match.MatchKey.Find(matchRow.ContraMatchId);
matchRow.ReleaseReaderLock(dataModelTransaction.TransactionId);
dataModel.DestroyMatch(
new object[] { record.RowId },
record.RowVersion);
matchRow.ReleaseWriterLock(dataModelTransaction.TransactionId);
// Delete the contra second, in case the record.RowVersion is off.
if (contraMatchRow != null)
{
contraMatchRow.AcquireWriterLock(dataModelTransaction);
dataModel.DestroyMatch(
new object[] { contraMatchRow.MatchId },
contraMatchRow.RowVersion);
contraMatchRow.ReleaseWriterLock(dataModelTransaction.TransactionId);
}
return(ErrorCode.Success);
}
