/// <summary>Loads a TraderVolumeSetting record using Metadata Parameters.</summary>
/// <param name="transaction">Contains the parameters and exceptions for this command.</param>
public static void Load(ParameterList parameters)
{
// Accessor for the TraderVolumeSetting Table.
ServerMarketData.TraderVolumeSettingDataTable traderVolumeSettingTable = ServerMarketData.TraderVolumeSetting;
// Extract the parameters from the command batch.
AdoTransaction adoTransaction = parameters["adoTransaction"];
SqlTransaction sqlTransaction = parameters["sqlTransaction"];
object configurationId = parameters["configurationId"].Value;
object externalId0 = parameters["externalId0"].Value;
decimal autoExecuteQuantity = parameters["autoExecuteQuantity"];
decimal thresholdQuantity = parameters["thresholdQuantity"];
object externalTraderVolumeSettingId = parameters["traderVolumeSettingId"].Value;
string externalTraderId = parameters["traderId"];
string externalVolumeCategoryId = parameters["volumeCategoryId"];
// The row versioning is largely disabled for external operations. The value is returned to the caller in the
// event it's needed for operations within the batch.
long rowVersion = long.MinValue;
// Resolve External Identifiers
int traderVolumeSettingId = TraderVolumeSetting.FindKey(configurationId, "traderVolumeSettingId", externalTraderVolumeSettingId);
int traderId = Trader.FindRequiredKey(configurationId, "traderId", externalTraderId);
int volumeCategoryId = VolumeCategory.FindRequiredKey(configurationId, "volumeCategoryId", externalVolumeCategoryId);
// The load operation will create a record if it doesn't exist, or update an existing record. The external
// identifier is used to determine if a record exists with the same key.
if ((traderVolumeSettingId == int.MinValue))
{
// Populate the 'externalId' varaibles so that the external identifier can be used to find the row when an
// external method is called with the same 'configurationId' parameter.
int externalKeyIndex = TraderVolumeSetting.GetExternalKeyIndex(configurationId, "traderVolumeSettingId");
object[] externalIdArray = new object[1];
externalIdArray[externalKeyIndex] = externalTraderVolumeSettingId;
externalId0 = externalIdArray[0];
// Call the internal method to complete the operation.
MarkThree.Guardian.Core.TraderVolumeSetting.Insert(adoTransaction, sqlTransaction, ref rowVersion, externalId0, autoExecuteQuantity, thresholdQuantity, traderId, volumeCategoryId);
}
else
{
// While the optimistic concurrency checking is disabled for the external methods, the internal methods
// still need to perform the check. This ncurrency checking logic by finding the current row version to be
// will bypass the coused when the internal method is called.
ServerMarketData.TraderVolumeSettingRow traderVolumeSettingRow = traderVolumeSettingTable.FindByTraderVolumeSettingId(traderVolumeSettingId);
rowVersion = ((long)(traderVolumeSettingRow[traderVolumeSettingTable.RowVersionColumn]));
// Call the internal method to complete the operation.
MarkThree.Guardian.Core.TraderVolumeSetting.Update(adoTransaction, sqlTransaction, ref rowVersion, externalId0, autoExecuteQuantity, thresholdQuantity, traderVolumeSettingId, traderId, volumeCategoryId);
}
// Return values.
parameters["rowVersion"] = rowVersion;
}
/// <summary>Finds a a TraderVolumeSetting record using a configuration and an external identifier.</summary>
/// <param name="configurationId">Specified which mappings (user id columns) to use when looking up external identifiers.</param>
/// <param name="parameterId">The name of the parameter as specified in the configuration table.</param>
/// <param name="externalId">The external (user supplied) identifier for the record.</param>
public static int FindKey(object configurationId, string parameterId, object externalId)
{
// A missing key will never match a column.
if ((externalId == null))
{
return int.MinValue;
}
// Accessor for the TraderVolumeSetting Table.
ServerMarketData.TraderVolumeSettingDataTable traderVolumeSettingTable = ServerMarketData.TraderVolumeSetting;
// Look for the record using the external identifier. The configuration selected the key to use, which effectively
// selected the external id column to use for the search. If a record is found in the view, a translation still needs
// to be made back to the original table before an index to the record can be returned to the caller.
int externalKeyIndex = TraderVolumeSetting.GetExternalKeyIndex(configurationId, parameterId);
System.Data.DataView externalKeyView = TraderVolumeSetting.externalKeyArray[externalKeyIndex];
int recordIndex = externalKeyView.Find(new object[] {
externalId});
if ((recordIndex == -1))
{
return int.MinValue;
}
return ((int)(externalKeyView[recordIndex].Row[traderVolumeSettingTable.TraderVolumeSettingIdColumn]));
}