private ODataEdmTypeSerializer GetResourceValueEdmTypeSerializer(IEdmTypeReference edmTypeReference)
{
ODataEdmTypeSerializer edmTypeSerializer;
if (edmTypeReference.IsCollection())
{
edmTypeSerializer = new ODataCollectionSerializer(SerializerProvider, true);
}
else if (edmTypeReference.IsStructured())
{
edmTypeSerializer = new ODataResourceValueSerializer(SerializerProvider);
}
else
{
edmTypeSerializer = SerializerProvider.GetEdmTypeSerializer(edmTypeReference);
}
return(edmTypeSerializer);
}
/// <summary>
/// Creates an <see cref="ODataCollectionValue"/> for the enumerable represented by <paramref name="enumerable"/>.
/// </summary>
/// <param name="enumerable">The value of the collection to be created.</param>
/// <param name="elementType">The element EDM type of the collection.</param>
/// <param name="writeContext">The serializer context to be used while creating the collection.</param>
/// <returns>The created <see cref="ODataCollectionValue"/>.</returns>
public virtual ODataCollectionValue CreateODataCollectionValue(IEnumerable enumerable, IEdmTypeReference elementType,
ODataSerializerContext writeContext)
{
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
if (elementType == null)
{
throw Error.ArgumentNull("elementType");
}
ArrayList valueCollection = new ArrayList();
if (enumerable != null)
{
ODataEdmTypeSerializer itemSerializer = null;
foreach (object item in enumerable)
{
if (item == null)
{
if (elementType.IsNullable)
{
valueCollection.Add(value: null);
continue;
}
throw new SerializationException(SRResources.NullElementInCollection);
}
IEdmTypeReference actualType = writeContext.GetEdmType(item, item.GetType());
Contract.Assert(actualType != null);
if (itemSerializer == null)
{
//For instance annotations we need to use complex serializer for complex type and not ODataResourceSerializer
if (isForAnnotations && actualType.IsStructured())
{
itemSerializer = new ODataResourceValueSerializer(SerializerProvider);
}
else
{
itemSerializer = SerializerProvider.GetEdmTypeSerializer(actualType);
if (itemSerializer == null)
{
throw new SerializationException(
Error.Format(SRResources.TypeCannotBeSerialized, actualType.FullName()));
}
}
}
// ODataCollectionWriter expects the individual elements in the collection to be the underlying
// values and not ODataValues.
valueCollection.Add(
itemSerializer.CreateODataValue(item, actualType, writeContext).GetInnerValue());
}
}
// Ideally, we'd like to do this:
// string typeName = _edmCollectionType.FullName();
// But ODataLib currently doesn't support .FullName() for collections. As a workaround, we construct the
// collection type name the hard way.
string typeName = "Collection(" + elementType.FullName() + ")";
// ODataCollectionValue is only a V3 property, arrays inside Complex Types or Entity types are only supported in V3
// if a V1 or V2 Client requests a type that has a collection within it ODataLib will throw.
ODataCollectionValue value = new ODataCollectionValue
{
Items = valueCollection.Cast <object>(),
TypeName = typeName
};
AddTypeNameAnnotationAsNeeded(value, writeContext.MetadataLevel);
return(value);
}
