private static void SetDependencies(DbContext dbContext, GraphDependency graphDependency, object graphEntity, INavigation navigation, object navigationValue, IDictionary <object, GraphDependency> result)
{
// Get the nested dependency for the navigationValue so we can add the inverse navigation dependency
// incase the navigationValue entity does not have an explicitly defined navigation property back to its principal / dependent
// i.e WorkOrderSpare.Spare but the Spare entity does not have a Spare.WorkOrderSpares navigation property
var nestedDependency = GetFlatGraph(dbContext, navigationValue, result);
if (nestedDependency is null)
{
return;
}
if (navigation.IsOnDependent
// A navigation for an OwnedType will be dependent on its owner the in efcore dependency hierarchy,
// but technically the Owner depends on the OwnedType if the OwnedType is part of its Owner's schema.
|| OwnedTypeUtil.IsOwnedInSameTableAsOwner(navigation))
{
graphDependency.DependsOn.Add((navigationValue, navigation));
nestedDependency.Dependents.Add((graphEntity, navigation.Inverse ?? navigation));
}
else
{
graphDependency.Dependents.Add((navigationValue, navigation));
nestedDependency.DependsOn.Add((graphEntity, navigation.Inverse ?? navigation));
}
}
private static GraphDependency GetFlatGraph(DbContext dbContext, object graphEntity, IDictionary <object, GraphDependency> result)
{
var entityType = dbContext.Model.FindEntityType(graphEntity.GetType());
// The entity is not being apart of the DbContext model, do nothing
if (entityType is null)
{
return(null);
}
GraphDependency graphDependency;
if (!result.TryGetValue(graphEntity, out graphDependency))
{
graphDependency = new GraphDependency();
result.Add(graphEntity, graphDependency);
}
else
{
// To prevent circular references & stack overflow, if the graphEntity has already been tracked then just return
return(graphDependency);
}
var entityNavigations = entityType.GetNavigations();
foreach (var navigation in entityNavigations)
{
if (navigation.IsCollection)
{
var navigationValue = dbContext.Entry(graphEntity).Collection(navigation.Name).CurrentValue;
if (navigationValue is null)
{
continue;
}
var navigationCollectionValue = navigationValue.Cast <object>().ToList();
foreach (var navEntity in navigationCollectionValue)
{
SetDependencies(dbContext, graphDependency, graphEntity, navigation, navEntity, result);
}
}
else
{
var navigationValue = dbContext.Entry(graphEntity).Reference(navigation.Name).CurrentValue;
if (navigationValue is null)
{
continue;
}
SetDependencies(dbContext, graphDependency, graphEntity, navigation, navigationValue, result);
}
}
return(graphDependency);
}
private static void SetDependencies(DbContext dbContext, GraphDependency graphDependency, object graphEntity, INavigation navigation, object navigationValue, IDictionary <object, GraphDependency> result)
{
// Get the nested dependency for the navigationValue so we can add the inverse navigation dependency
// incase the navigationValue entity does not have an explicitly defined navigation property back to its principal / dependent
// i.e WorkOrderSpare.Spare but the Spare entity does not have a Spare.WorkOrderSpares navigation property
var nestedDependency = GetFlatGraph(dbContext, navigationValue, result);
if (navigation.IsOnDependent)
{
graphDependency.DependsOn.Add((navigationValue, navigation));
nestedDependency.Dependents.Add((graphEntity, navigation.Inverse ?? navigation));
}
else
{
graphDependency.Dependents.Add((navigationValue, navigation));
nestedDependency.DependsOn.Add((graphEntity, navigation.Inverse ?? navigation));
}
}
