public static object GetKeyFor <TEntity>(this IContainerMetadata containerMetadata, TEntity entity)
{
Contract.Requires <ArgumentNullException>(containerMetadata != null);
Contract.Requires <ArgumentNullException>(entity != null);
IEntityTypeMetadata entityTypeMetadata = containerMetadata.GetEntityType(typeof(TEntity));
return(entityTypeMetadata.EntityKeyFunction(entity));
}
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);
}
}
}
