/// <summary>
/// Translate a TypeSegment
/// </summary>
/// <param name="segment">the segment to Translate</param>
/// <returns>Translated WebApi path segment</returns>
public override IEnumerable <ODataPathSegment> Translate(Semantic.TypeSegment segment)
{
IEdmType elementType = segment.EdmType;
if (segment.EdmType.TypeKind == EdmTypeKind.Collection)
{
elementType = ((IEdmCollectionType)segment.EdmType).ElementType.Definition;
}
if (elementType.TypeKind == EdmTypeKind.Entity)
{
yield return(new CastPathSegment((IEdmEntityType)elementType));
}
else if (elementType.TypeKind == EdmTypeKind.Complex)
{
yield return(new ComplexCastPathSegment((IEdmComplexType)elementType));
}
}
/// <summary>
/// Get sub select and expand clause by property name, if the propertyname is in form of TypeCast/Property, the typeSegment would also be returned.
/// </summary>
/// <param name="clause">The root clause.</param>
/// <param name="propertyName">The property name to navigate to.</param>
/// <param name="subSelectExpand">The sub select and expand clause under sub property.</param>
/// <param name="typeSegment">Type cast segment, if exists.</param>
internal static void GetSubSelectExpandClause(this SelectExpandClause clause, string propertyName, out SelectExpandClause subSelectExpand, out TypeSegment typeSegment)
{
subSelectExpand = null;
typeSegment = null;
ExpandedNavigationSelectItem selectedItem = clause
.SelectedItems
.OfType <ExpandedNavigationSelectItem>()
.FirstOrDefault(
m => m.PathToNavigationProperty.LastSegment != null &&
m.PathToNavigationProperty.LastSegment.TranslateWith(PathSegmentToStringTranslator.Instance) == propertyName);
if (selectedItem != null)
{
subSelectExpand = selectedItem.SelectAndExpand;
typeSegment = selectedItem.PathToNavigationProperty.FirstSegment as TypeSegment;
}
}
/// <summary>
/// Determine the NavigationSource of a TypeSegment
/// </summary>
/// <param name="segment">The TypeSegment to look in.</param>
/// <returns>The IEdmNavigationSource of this TypeSegment</returns>
/// <exception cref="System.ArgumentNullException">Throws if the input segment is null.</exception>
public override IEdmNavigationSource Translate(TypeSegment segment)
{
ExceptionUtils.CheckArgumentNotNull(segment, "segment");
return(segment.NavigationSource);
}
