public BidirectionalGraph <Resource.Resource, AssociationViewEdge> CreateResourceLoadGraph()
{
var resourceModel = _resourceModelProvider.GetResourceModel();
var resourceGraph = new BidirectionalGraph <Resource.Resource, AssociationViewEdge>();
var resources = resourceModel.GetAllResources()
.Where(r => !r.IsAbstract() && !r.FullName.IsEdFiSchoolYearType())
.ToArray();
resourceGraph.AddVertexRange(resources);
var edges = resources
// Abstract resources are already covered by their concrete resources in the model
.Where(res => !res.IsAbstract())
// Add edges for all references (incoming associations) and descriptor usages
.SelectMany(
res =>
// Add all incoming reference in the entire resource
res.AllContainedReferences.SelectMany(AssociationViewEdge.CreateEdges)
// Add direct descriptor associations
.Concat(
res.AllContainedItemTypesOrSelf.SelectMany(
rc => rc.Properties.Where(p => p.IsDirectLookup)
.Select(
p => new AssociationViewEdge(
p.DescriptorResource,
p.Parent.ResourceRoot,
p.EntityProperty.IncomingAssociations.Single())))))
// Eliminate redundant edges
.Distinct(AssociationViewEdge.Comparer);
resourceGraph.AddEdgeRange(edges.Where(e => !e.Source.FullName.IsEdFiSchoolYearType()));
// Apply predefined graph transformations
if (_graphTransformers.Any())
{
foreach (var graphTransformer in _graphTransformers)
{
graphTransformer.Transform(resourceGraph);
}
}
resourceGraph.BreakCycles(edge => edge.AssociationView.IsSoftDependency);
return(resourceGraph);
}
