/// <summary>
/// Handles a change to the DestinationOrderRow table.
/// </summary>
/// <param name="sender">The object that originated the event.</param>
/// <param name="e">The event arguments.</param>
private void OnDestinationOrderRowChanged(object sender, DestinationOrderRowChangeEventArgs e)
{
// When the merge is completed, this indicates that the document should be refreshed.
this.isDataChanged = true;
}
/// <summary>
/// Handler for validating Destination Order records.
/// </summary>
/// <param name="sender">The object that originated the event.</param>
/// <param name="e">The event arguments.</param>
internal static void OnDestinationOrderRowValidate(object sender, DestinationOrderRowChangeEventArgs e)
{
Int32 currentStatusCode;
Decimal destinationOrderQuantity;
DataModelTransaction dataModelTransaction;
Int32 previousStatusCode;
Decimal sourceOrderQuantity;
WorkingOrderRow workingOrderRow;
// The Business Rules will be enforced on this Destination Order. Note that it is locked at the point this handler is called.
DestinationOrderRow destinationOrderRow = e.Row;
// The action on the row determines which rule to evaluate.
switch (destinationOrderRow.RowState)
{
case DataRowState.Added:
// This rule will reject the operation if the Working Order is overcommitted with a destination.
dataModelTransaction = DataModelTransaction.Current;
// This rule will throw an exception if the quantity sent to a destination is greater than the quantity ordered. The quantity ordered and
// quantity sent can only be calcuated from the owning Working Order which must be locked in order to carry out the calculations.
workingOrderRow = e.Row.WorkingOrderRow;
workingOrderRow.AcquireReaderLock(dataModelTransaction);
sourceOrderQuantity = WorkingOrder.GetSourceOrderQuantity(dataModelTransaction, workingOrderRow);
destinationOrderQuantity = WorkingOrder.GetDestinationOrderQuantity(dataModelTransaction, workingOrderRow);
if (sourceOrderQuantity < destinationOrderQuantity)
{
throw new FaultException <DestinationQuantityFault>(
new DestinationQuantityFault(workingOrderRow.WorkingOrderId, sourceOrderQuantity, destinationOrderQuantity));
}
break;
case DataRowState.Modified:
// Reject the operation if the Working Order is overcommitted with a destination. Note that the order of the evaluation is important for
// efficiency. There is no need to sum up the source and Destination Orders if the quantity has been reduced as there's no chance it will be
// over committed.
Decimal originalQuantity = (Decimal)destinationOrderRow[DataModel.DestinationOrder.OrderedQuantityColumn, DataRowVersion.Original];
Decimal currentQuantity = (Decimal)destinationOrderRow[DataModel.DestinationOrder.OrderedQuantityColumn, DataRowVersion.Current];
if (originalQuantity < currentQuantity)
{
// Once it's determined that the order can be overcommitted, a middle tier context is required to lock the rows so the quantities can be
// aggregated.
dataModelTransaction = DataModelTransaction.Current;
// This rule will throw an exception if the quantity sent to a destination is greater than the quantity ordered. The quantity ordered and
// quantity sent can only be calcuated from the owning Working Order which must be locked in order to carry out the calculations.
workingOrderRow = e.Row.WorkingOrderRow;
workingOrderRow.AcquireReaderLock(dataModelTransaction);
sourceOrderQuantity = WorkingOrder.GetSourceOrderQuantity(dataModelTransaction, workingOrderRow);
destinationOrderQuantity = WorkingOrder.GetDestinationOrderQuantity(dataModelTransaction, workingOrderRow);
if (sourceOrderQuantity < destinationOrderQuantity)
{
throw new FaultException <DestinationQuantityFault>(
new DestinationQuantityFault(workingOrderRow.WorkingOrderId, sourceOrderQuantity, destinationOrderQuantity));
}
}
// This rule will examine the effects of a state change of the Destination Order. The stateChangeMatrix contains delegates to methods that
// will determine what, if any, stats change should be applied to the Working Order due to the change in state of this Destination Order.
previousStatusCode = Convert.ToInt32(StatusMap.FromId((Guid)destinationOrderRow[DataModel.DestinationOrder.StatusIdColumn, DataRowVersion.Original]));
currentStatusCode = Convert.ToInt32(StatusMap.FromId((Guid)destinationOrderRow[DataModel.DestinationOrder.StatusIdColumn, DataRowVersion.Current]));
if (previousStatusCode != currentStatusCode)
{
DestinationOrder.statusChangeMatrix[previousStatusCode, currentStatusCode](new Object[] { destinationOrderRow.WorkingOrderId });
}
break;
case DataRowState.Deleted:
// This rule will examine the effects of a state change of the Destination Order. The stateChangeMatrix contains delegates to methods that
// will determine what, if any, stats change should be applied to the Working Order due to the change in state of this Destination Order.
previousStatusCode = Convert.ToInt32(StatusMap.FromId((Guid)destinationOrderRow[DataModel.DestinationOrder.StatusIdColumn, DataRowVersion.Original]));
currentStatusCode = (Int32)Status.Deleted;
Guid workingOrderId = (Guid)destinationOrderRow[DataModel.DestinationOrder.WorkingOrderIdColumn, DataRowVersion.Original];
DestinationOrder.statusChangeMatrix[previousStatusCode, currentStatusCode](new Object[] { workingOrderId });
break;
}
}
