private static void ExpandGenericNavigationActionsForAllNavigationProperties(IEnumerable <HttpActionDescriptor> navigationActions,
List <HttpActionDescriptor> expandedDescriptors,
List <HttpActionDescriptor> removeDescriptors,
Func <string, string> actionNameBuilder)
{
foreach (HttpActionDescriptor navigationAction in navigationActions)
{
ReflectedHttpActionDescriptor reflectedHttpActionDescriptor = navigationAction as ReflectedHttpActionDescriptor;
if ((reflectedHttpActionDescriptor != null) &&
reflectedHttpActionDescriptor.MethodInfo.IsGenericMethodDefinition &&
reflectedHttpActionDescriptor.MethodInfo.GetGenericArguments().Length == 1)
{
// Lookup the EntitySet metadata for the controller
IContainerMetadata containerMetadata = reflectedHttpActionDescriptor.ControllerDescriptor.GetContainerMetadata();
if (containerMetadata != null)
{
IEntitySetMetadata entitySetMetadata = containerMetadata.GetEntitySet(reflectedHttpActionDescriptor.ControllerDescriptor.ControllerName);
if (entitySetMetadata != null)
{
foreach (IEntityTypeMetadata entityTypeMetadata in entitySetMetadata.ElementTypeHierarchyMetadata)
{
// Foreach NavigationProperty in all of the entity types, add a new HttpActionDescriptor
foreach (var edmNavigationProperty in entityTypeMetadata.EdmType.DeclaredProperties.OfType <IEdmNavigationProperty>())
{
IEdmEntityType toEntityType = edmNavigationProperty.ToEntityType();
IEntityTypeMetadata propertyTypeMetadata = containerMetadata.GetEntityType(toEntityType);
Type tProperty = propertyTypeMetadata.ClrType;
MethodInfo genericMethod = reflectedHttpActionDescriptor.MethodInfo.MakeGenericMethod(tProperty);
string expandedActionName = actionNameBuilder(edmNavigationProperty.Name);
expandedDescriptors.Add(new RenamedReflectedHttpActionDescriptor(reflectedHttpActionDescriptor.ControllerDescriptor,
genericMethod,
expandedActionName));
}
}
}
}
removeDescriptors.Add(reflectedHttpActionDescriptor);
}
}
}
/// <summary>
/// Add an entity set controller of type <paramref name="controllerType"/> for the specified <paramref name="entitySetName"/> and <paramref name="entityType"/>.
/// </summary>
/// <param name="entitySetName"></param>
/// <param name="entityType"></param>
/// <param name="controllerType"></param>
public void AddEntitySetController(string entitySetName, Type entityType, Type controllerType)
{
Contract.Requires <ArgumentException>(!string.IsNullOrWhiteSpace(entitySetName));
Contract.Requires <ArgumentNullException>(entityType != null);
Contract.Requires <ArgumentNullException>(controllerType != null);
Contract.Requires <ArgumentException>(RequiredBaseController.IsAssignableFrom(controllerType), "Controller types must derive from System.Web.Http.OData.ODataController");
IEntitySetMetadata entitySetMetadata = _containerMetadata.GetEntitySet(entitySetName);
if (entitySetMetadata == null)
{
throw new ArgumentException(string.Format("EntitySet named '{0}' not found in container.", entitySetName));
}
if (entitySetMetadata.ElementTypeMetadata.ClrType != entityType)
{
throw new ArgumentException(string.Format("EntitySet named '{0}' should have type {1}; {2} was passed in.", entitySetName, entitySetMetadata.ElementTypeMetadata.ClrType, entityType));
}
var controllerDescriptor = new HttpControllerDescriptor(_webApiConfig, entitySetName, controllerType);
_controllerSelector.AddController(entitySetName, controllerDescriptor);
}