public GanttChart(IDirectedGraph <INode> orderOperationGraph)
{
Dictionary <Id, List <Interval> > groups = new Dictionary <Id, List <Interval> >();
foreach (var graphNode in orderOperationGraph.GetNodes())
{
IScheduleNode node = graphNode.GetNode().GetEntity();
if (node.GetType() != typeof(ProductionOrderOperation) && node.GetType() != typeof(PurchaseOrderPart))
{
continue;
}
GanttChartBar ganttChartBar = new GanttChartBar();
ganttChartBar.operation = node.GetId().ToString();
ganttChartBar.operationId = node.GetId().ToString();
ganttChartBar.resource = DetermineFreeGroup(groups,
new Interval(node.GetId(), node.GetStartTimeBackward(), node.GetEndTimeBackward())).ToString();
;
ganttChartBar.start = node.GetStartTimeBackward().GetValue().ToString();
ganttChartBar.end = node.GetEndTimeBackward().GetValue().ToString();
ganttChartBar.groupId = ganttChartBar.resource;
AddGanttChartBar(ganttChartBar);
}
}
public void ScheduleForward()
{
Stack <INode> S = new Stack <INode>();
// d_0 = 0
foreach (var node in _orderOperationGraph.GetLeafNodes())
{
IScheduleNode scheduleNode = node.GetEntity();
if (scheduleNode.IsReadOnly() == false &&
scheduleNode.GetStartTimeBackward().IsSmallerThan(_simulationInterval.GetStart()))
{
// implicitly the due/endTime will also be set accordingly
scheduleNode.SetStartTimeBackward(_simulationInterval.GetStart());
S.Push(node);
}
else // no forward scheduling is needed
{
}
}
// while S nor empty do
while (S.Any())
{
INode i = S.Pop();
IScheduleNode iAsScheduleNode = (IScheduleNode)i.GetEntity();
INodes predecessors = _orderOperationGraph.GetPredecessorNodes(i);
if (predecessors != null && predecessors.Any())
{
foreach (var predecessor in predecessors)
{
IScheduleNode predecessorScheduleNode = predecessor.GetEntity();
// if predecessor starts before endTime of current d/p --> change that
if (predecessorScheduleNode.IsReadOnly() == false && predecessorScheduleNode
.GetStartTimeBackward().IsSmallerThan(iAsScheduleNode.GetEndTimeBackward()))
{
// COPs are not allowed to change
if (predecessorScheduleNode.GetType() != typeof(CustomerOrderPart))
{
// don't take getDueTime() since in case of a demand,
// this will be the startTime, which is to early
// This must be the maximum endTime of all childs !!!
DueTime maxEndTime = iAsScheduleNode.GetEndTimeBackward();
foreach (var successor in _orderOperationGraph.GetSuccessorNodes(
predecessor))
{
DueTime successorsEndTime = successor.GetEntity().GetEndTimeBackward();
if (successorsEndTime.IsGreaterThan(maxEndTime))
{
maxEndTime = successorsEndTime;
}
}
predecessorScheduleNode.SetStartTimeBackward(maxEndTime);
}
}
S.Push(predecessor);
}
}
}
}
