/// <summary>
/// Add any explicit nav prop links to a select expand clause as necessary.
/// </summary>
/// <param name="clause">the select expand clause to modify.</param>
public static void AddExplicitNavPropLinksWhereNecessary(SelectExpandClause clause)
{
IEnumerable <SelectItem> selectItems = clause.SelectedItems;
// make sure that there are already selects for this level, otherwise we change the select semantics.
bool anyPathSelectItems = selectItems.Any(x => x is PathSelectItem);
// if there are selects for this level, then we need to add nav prop select items for each
// expanded nav prop
IEnumerable <ODataSelectPath> selectedPaths = selectItems.OfType <PathSelectItem>().Select(item => item.SelectedPath);
foreach (ExpandedNavigationSelectItem navigationSelect in selectItems.Where(I => I.GetType() == typeof(ExpandedNavigationSelectItem)))
{
if (anyPathSelectItems && !selectedPaths.Any(x => x.Equals(navigationSelect.PathToNavigationProperty.ToSelectPath())))
{
clause.AddToSelectedItems(new PathSelectItem(navigationSelect.PathToNavigationProperty.ToSelectPath()));
}
AddExplicitNavPropLinksWhereNecessary(navigationSelect.SelectAndExpand);
}
foreach (ExpandedReferenceSelectItem navigationSelect in selectItems.Where(I => I.GetType() == typeof(ExpandedReferenceSelectItem)))
{
if (anyPathSelectItems && !selectedPaths.Any(x => x.Equals(navigationSelect.PathToNavigationProperty.ToSelectPath())))
{
clause.AddToSelectedItems(new PathSelectItem(navigationSelect.PathToNavigationProperty.ToSelectPath()));
}
}
}
/// <summary>
/// Add any explicit nav prop links to a select expand clause as necessary.
/// </summary>
/// <param name="clause">the select expand clause to modify.</param>
public static void AddExplicitNavPropLinksWhereNecessary(SelectExpandClause clause)
{
// Since we're going to be modifying the clause's selected items we need to make a copy here to avoid failures related to
// enumerating a changed collection.
List <SelectItem> selectItems = clause.SelectedItems.ToList();
// make sure that there are already selects for this level, otherwise we change the select semantics.
bool anyPathSelectItems = selectItems.Any(x => x is PathSelectItem);
// If there are selects for this level, then we need to add nav prop select items for each expanded nav prop.
// NOTE: We avoid OfType<ExpandedNavigationSelectItem>() because we do not want to match derived types.
foreach (ExpandedNavigationSelectItem navigationSelect in selectItems.Where(I => I.GetType() == typeof(ExpandedNavigationSelectItem)))
{
AddExplicitNavPropLinksWhereNecessary(navigationSelect.SelectAndExpand);
}
// We also make a copy here to avoid reevaluating the filter criteria for every ExpandedReferenceSelectItem we encounter.
List <ODataSelectPath> selectedPaths = selectItems.OfType <PathSelectItem>().Select(item => item.SelectedPath).ToList();
// NOTE: We avoid OfType<ExpandedReferenceSelectItem>() because we do not want to match derived types.
foreach (ExpandedReferenceSelectItem navigationSelect in selectItems.Where(I => I.GetType() == typeof(ExpandedReferenceSelectItem)))
{
if (anyPathSelectItems && !selectedPaths.Any(x => x.Equals(navigationSelect.PathToNavigationProperty.ToSelectPath())))
{
clause.AddToSelectedItems(new PathSelectItem(navigationSelect.PathToNavigationProperty.ToSelectPath()));
}
}
}