/// <summary>
/// Override this method to translate property values in v3 format to v4 format.
/// We treat collections (arrays of non-entity/non-complex types) differently from resource sets because
/// there is an accessible method to override that allows us to examine each value in the collection and convert it if necessary.
/// </summary>
/// <param name="collectionValue">Each value in the collection</param>
/// <param name="elementType">The type of the value</param>
/// <param name="readContext">Context that contains model, state and HTTP request information</param>
/// <returns>Deserialized object from request body</returns>
public override IEnumerable ReadCollectionValue(ODataCollectionValue collectionValue, IEdmTypeReference elementType,
ODataDeserializerContext readContext)
{
if (collectionValue == null)
{
throw new ArgumentNullException(nameof(collectionValue));
}
if (elementType == null)
{
throw new ArgumentNullException(nameof(elementType));
}
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(elementType);
if (deserializer == null)
{
throw new SerializationException("Type " + elementType.FullName() + " cannot be deserialized");
}
foreach (object item in collectionValue.Items)
{
if (elementType.IsPrimitive())
{
if (((IEdmPrimitiveType)elementType.Definition).PrimitiveKind == EdmPrimitiveTypeKind.Int64)
{
yield return(Convert.ToInt64(item));
}
else
{
yield return(item);
}
}
else
{
yield return(deserializer.ReadInline(item, elementType, readContext));
}
}
}
public override object Read(ODataMessageReader messageReader, Type type, ODataDeserializerContext readContext)
{
if (messageReader == null)
{
throw Error.ArgumentNull("messageReader");
}
IEdmAction action = GetAction(readContext);
Contract.Assert(action != null);
// Create the correct resource type;
Dictionary <string, object> payload;
if (type == typeof(ODataActionParameters))
{
payload = new ODataActionParameters();
}
else
{
payload = new ODataUntypedActionParameters(action);
}
ODataParameterReader reader = messageReader.CreateODataParameterReader(action);
while (reader.Read())
{
string parameterName = null;
IEdmOperationParameter parameter = null;
switch (reader.State)
{
case ODataParameterReaderState.Value:
parameterName = reader.Name;
parameter = action.Parameters.SingleOrDefault(p => p.Name == parameterName);
// ODataLib protects against this but asserting just in case.
Contract.Assert(parameter != null, String.Format(CultureInfo.InvariantCulture, "Parameter '{0}' not found.", parameterName));
if (parameter.Type.IsPrimitive())
{
payload[parameterName] = reader.Value;
}
else
{
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(parameter.Type);
payload[parameterName] = deserializer.ReadInline(reader.Value, parameter.Type, readContext);
}
break;
case ODataParameterReaderState.Collection:
parameterName = reader.Name;
parameter = action.Parameters.SingleOrDefault(p => p.Name == parameterName);
// ODataLib protects against this but asserting just in case.
Contract.Assert(parameter != null, String.Format(CultureInfo.InvariantCulture, "Parameter '{0}' not found.", parameterName));
IEdmCollectionTypeReference collectionType = parameter.Type as IEdmCollectionTypeReference;
Contract.Assert(collectionType != null);
ODataCollectionValue value = ReadCollection(reader.CreateCollectionReader());
ODataCollectionDeserializer collectionDeserializer = (ODataCollectionDeserializer)DeserializerProvider.GetEdmTypeDeserializer(collectionType);
payload[parameterName] = collectionDeserializer.ReadInline(value, collectionType, readContext);
break;
case ODataParameterReaderState.Entry:
parameterName = reader.Name;
parameter = action.Parameters.SingleOrDefault(p => p.Name == parameterName);
Contract.Assert(parameter != null, String.Format(CultureInfo.InvariantCulture, "Parameter '{0}' not found.", parameterName));
IEdmEntityTypeReference entityTypeReference = parameter.Type as IEdmEntityTypeReference;
Contract.Assert(entityTypeReference != null);
ODataReader entryReader = reader.CreateEntryReader();
object item = ODataEntityDeserializer.ReadEntryOrFeed(entryReader);
var savedProps = new List <ODataProperty>();
if (item is ODataEntryWithNavigationLinks)
{
var obj = CreateDataObject(readContext.Model as DataObjectEdmModel, entityTypeReference, item as ODataEntryWithNavigationLinks, out Type objType);
payload[parameterName] = obj;
break;
}
ODataEntityDeserializer entityDeserializer = (ODataEntityDeserializer)DeserializerProvider.GetEdmTypeDeserializer(entityTypeReference);
payload[parameterName] = entityDeserializer.ReadInline(item, entityTypeReference, readContext);
break;
case ODataParameterReaderState.Feed:
parameterName = reader.Name;
parameter = action.Parameters.SingleOrDefault(p => p.Name == parameterName);
Contract.Assert(parameter != null, String.Format(CultureInfo.InvariantCulture, "Parameter '{0}' not found.", parameterName));
IEdmCollectionTypeReference feedType = parameter.Type as IEdmCollectionTypeReference;
Contract.Assert(feedType != null);
ODataReader feedReader = reader.CreateFeedReader();
object feed = ODataEntityDeserializer.ReadEntryOrFeed(feedReader);
IEnumerable enumerable;
ODataFeedWithEntries odataFeedWithEntries = feed as ODataFeedWithEntries;
if (odataFeedWithEntries != null)
{
List <DataObject> list = new List <DataObject>();
Type objType = null;
foreach (ODataEntryWithNavigationLinks entry in odataFeedWithEntries.Entries)
{
list.Add(CreateDataObject(readContext.Model as DataObjectEdmModel, feedType.ElementType() as IEdmEntityTypeReference, entry, out objType));
}
IEnumerable castedResult =
_castMethodInfo.MakeGenericMethod(objType)
.Invoke(null, new[] { list }) as IEnumerable;
payload[parameterName] = castedResult;
break;
}
ODataFeedDeserializer feedDeserializer = (ODataFeedDeserializer)DeserializerProvider.GetEdmTypeDeserializer(feedType);
object result = feedDeserializer.ReadInline(feed, feedType, readContext);
IEdmTypeReference elementTypeReference = feedType.ElementType();
Contract.Assert(elementTypeReference.IsEntity());
enumerable = result as IEnumerable;
if (enumerable != null)
{
var isUntypedProp = readContext.GetType().GetProperty("IsUntyped", BindingFlags.NonPublic | BindingFlags.Instance);
bool isUntyped = (bool)isUntypedProp.GetValue(readContext, null);
if (isUntyped)
{
EdmEntityObjectCollection entityCollection = new EdmEntityObjectCollection(feedType);
foreach (EdmEntityObject entityObject in enumerable)
{
entityCollection.Add(entityObject);
}
payload[parameterName] = entityCollection;
}
else
{
Type elementClrType = EdmLibHelpers.GetClrType(elementTypeReference, readContext.Model);
IEnumerable castedResult =
_castMethodInfo.MakeGenericMethod(elementClrType)
.Invoke(null, new[] { result }) as IEnumerable;
payload[parameterName] = castedResult;
}
}
break;
}
}
return(payload);
}
