public void Insert0_field_path()
{
var aw = new AdventureWorks();
var path = new FieldPath();
// creating the path in reverse should be fine
path.Insert(0, aw.ProductCategory.DefaultField);
path.Insert(0, aw.Products["ProductCategoryID"]);
path.Insert(0, aw.SalesOrderDetails["ProductID"]);
}
public IEnumerable<IFieldPath> Add(Node n)
{
// if node is SubjectNode, add all fields (and defaults for IRelationFields)
// if node is FieldNode with an IRelationField, add all fields for the related subject (and defaults for IRelationFields)
// if node is FieldNode with an IField, create a path tracing back to the parent
if (n is SubjectNode)
{
var fields = PathFactory.GetFields(((SubjectNode)n).Subject);
foreach (var f in fields)
{
f.Description = null; // this is bad behaviour from the FieldPathFactory
if (!Fields.Contains(f))
Fields.Add(f);
}
return fields;
}
else if (n is FieldNode && ((FieldNode)n).Field is IRelationField)
{
var fields = PathFactory.GetFields((IRelationField)((FieldNode)n).Field);
foreach (var f in fields)
{
// ensure hierarchy is maintained
var parent = n;
while (parent != null && parent is FieldNode)
{
f.Insert(0, ((FieldNode)parent).Field);
parent = parent.Parent;
}
f.Description = null;
if (!Fields.Contains(f))
Fields.Add(f);
}
return fields;
}
else
{
var path = new FieldPath();
var parent = n;
while (parent != null && parent is FieldNode)
{
path.Insert(0, ((FieldNode)parent).Field);
parent = parent.Parent;
}
if (!Fields.Contains(path))
Fields.Add(path);
return new IFieldPath[] { path };
}
}
