/// <summary>
/// Adds a node to a segment in the graph
/// </summary>
private NodeSegmentAssignment AddAssignment(Node node, Segment segment)
{
var assignment = new NodeSegmentAssignment
{
Node = node,
Segment = segment,
DependentNodes = new List <IList <Node> >()
};
foreach (var dependentNode in node.DependentNodes)
{
assignment.DependentNodes.Add(dependentNode.ToList());
}
node.AssignedSegments.Add(assignment);
segment.AssignedNodes.Add(assignment);
return(assignment);
}
/// <summary>
/// Takes a node, and a list of alternate dependencies and chooses which
/// of the dependencies will be satisfied by the segmentation graph for
/// this particular segment assignment
/// </summary>
private Node ResolveMultiChoiceDependency(
NodeSegmentAssignment assignment,
IList <Node> choices)
{
// First look for a dependant in the same segment
var result = assignment.Segment.AssignedNodes.Select(a => a.Node).FirstOrDefault(choices.Contains);
// Second look for a dependant in an ancestor segment
if (result == null)
{
var ancestor = SegmentAncestors(assignment.Segment)
.FirstOrDefault(s => s.AssignedNodes.Select(a => a.Node).Any(choices.Contains));
if (ancestor != null)
{
result = ancestor.AssignedNodes.Select(a => a.Node).FirstOrDefault(choices.Contains);
}
}
return(result);
}
