public DueTime GetEarliestPossibleStartTimeOf(ProductionOrderBom productionOrderBom)
{
DueTime earliestStartTime = productionOrderBom.GetStartTimeBackward();
Providers providers = ZppConfiguration.CacheManager.GetAggregator()
.GetAllChildProvidersOf(productionOrderBom);
if (providers.Count() > 1)
{
throw new MrpRunException("A productionOrderBom can only have one provider !");
}
Provider stockExchangeProvider = providers.GetAny();
if (earliestStartTime.IsGreaterThanOrEqualTo(
stockExchangeProvider.GetStartTimeBackward()))
{
earliestStartTime = stockExchangeProvider.GetStartTimeBackward();
}
else
{
throw new MrpRunException("A provider of a demand cannot have a later dueTime.");
}
Demands stockExchangeDemands = ZppConfiguration.CacheManager.GetAggregator()
.GetAllChildDemandsOf(stockExchangeProvider);
if (stockExchangeDemands.Any() == false)
// StockExchangeProvider has no childs (stockExchangeDemands),
// take that from stockExchangeProvider
{
DueTime childDueTime = stockExchangeProvider.GetStartTimeBackward();
if (childDueTime.IsGreaterThan(earliestStartTime))
{
earliestStartTime = childDueTime;
}
}
else
// StockExchangeProvider has childs (stockExchangeDemands)
{
foreach (var stockExchangeDemand in stockExchangeDemands)
{
DueTime stockExchangeDemandDueTime = stockExchangeDemand.GetStartTimeBackward();
if (stockExchangeDemandDueTime.IsGreaterThan(earliestStartTime))
{
earliestStartTime = stockExchangeDemandDueTime;
}
}
}
return(earliestStartTime);
}
