public void GetFirstNonTypeCastSegment_WorksForExpandPathWithPropertySegment()
{
// Arrange
EdmEntityType entityType = new EdmEntityType("NS", "Customer");
IEdmStructuralProperty property = entityType.AddStructuralProperty("Id", EdmPrimitiveTypeKind.String);
var navProperty = entityType.AddUnidirectionalNavigation(new EdmNavigationPropertyInfo
{
Name = "Nav",
Target = entityType,
TargetMultiplicity = EdmMultiplicity.One
});
EdmEntityContainer container = new EdmEntityContainer("NS", "Container");
EdmEntitySet set = new EdmEntitySet(container, "set", entityType);
NavigationPropertySegment navSegment = new NavigationPropertySegment(navProperty, set);
TypeSegment typeSegment = new TypeSegment(entityType, null);
ODataPathSegment propertySegment = new PropertySegment(property);
ODataExpandPath expandPath = new ODataExpandPath(typeSegment, propertySegment, navSegment);
// Act
IList <ODataPathSegment> remainingSegments;
ODataPathSegment firstNonTypeSegment = expandPath.GetFirstNonTypeCastSegment(out remainingSegments);
// Assert
Assert.NotNull(firstNonTypeSegment);
Assert.Same(propertySegment, firstNonTypeSegment);
Assert.NotNull(remainingSegments);
Assert.Same(navSegment, Assert.Single(remainingSegments));
}
public void GetFirstNonTypeCastSegment_ExpandPath_ThrowsArgumentNull()
{
// Arrange & Act
ODataExpandPath expandPath = null;
IList <ODataPathSegment> remainingSegments;
// Assert
ExceptionAssert.ThrowsArgumentNull(() => expandPath.GetFirstNonTypeCastSegment(out remainingSegments), "expandPath");
}
/// <summary>
/// Build the $expand item, it maybe $expand=nav, $expand=complex/nav, $expand=nav/$ref, etc.
/// </summary>
/// <param name="expandReferenceItem">The expanded reference select item.</param>
/// <param name="currentLevelPropertiesInclude">The current properties to include at current level.</param>
/// <param name="structuralTypeInfo">The structural type properties.</param>
private void BuildExpandItem(ExpandedReferenceSelectItem expandReferenceItem,
IDictionary <IEdmStructuralProperty, SelectExpandIncludedProperty> currentLevelPropertiesInclude,
EdmStructuralTypeInfo structuralTypeInfo)
{
Contract.Assert(expandReferenceItem != null && expandReferenceItem.PathToNavigationProperty != null);
Contract.Assert(currentLevelPropertiesInclude != null);
Contract.Assert(structuralTypeInfo != null);
// Verify and process the $expand=abc/xyz/nav.
ODataExpandPath expandPath = expandReferenceItem.PathToNavigationProperty;
IList <ODataPathSegment> remainingSegments;
ODataPathSegment segment = expandPath.GetFirstNonTypeCastSegment(out remainingSegments);
PropertySegment firstPropertySegment = segment as PropertySegment;
if (firstPropertySegment != null)
{
// for example: $expand=abc/xyz/nav, the remaining segment can't be null
// because at least the last navigation property segment is there.
Contract.Assert(remainingSegments != null);
if (structuralTypeInfo.IsStructuralPropertyDefined(firstPropertySegment.Property))
{
SelectExpandIncludedProperty newPropertySelectItem;
if (!currentLevelPropertiesInclude.TryGetValue(firstPropertySegment.Property, out newPropertySelectItem))
{
newPropertySelectItem = new SelectExpandIncludedProperty(firstPropertySegment);
currentLevelPropertiesInclude[firstPropertySegment.Property] = newPropertySelectItem;
}
newPropertySelectItem.AddSubExpandItem(remainingSegments, expandReferenceItem);
}
}
else
{
// for example: $expand=nav, or $expand=NS.SubType/nav, the navigation property segment should be the last segment.
// So, the remaining segments should be null.
Contract.Assert(remainingSegments == null);
NavigationPropertySegment firstNavigationSegment = segment as NavigationPropertySegment;
Contract.Assert(firstNavigationSegment != null);
if (structuralTypeInfo.IsNavigationPropertyDefined(firstNavigationSegment.NavigationProperty))
{
// It's not allowed to have mulitple navigation expanded or referenced.
// for example: "$expand=nav($top=2),nav($skip=3)" is not allowed and will be merged (or throw exception) at ODL side.
ExpandedNavigationSelectItem expanded = expandReferenceItem as ExpandedNavigationSelectItem;
if (expanded != null)
{
if (ExpandedProperties == null)
{
ExpandedProperties = new Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem>();
}
ExpandedProperties[firstNavigationSegment.NavigationProperty] = expanded;
}
else
{
// $expand=..../nav/$ref
if (ReferencedProperties == null)
{
ReferencedProperties = new Dictionary <IEdmNavigationProperty, ExpandedReferenceSelectItem>();
}
ReferencedProperties[firstNavigationSegment.NavigationProperty] = expandReferenceItem;
}
}
}
}
