internal static DataServiceProtocolVersion CalculateUriResponseMinProtocolVersion(ODataUri requestUri, string contentType, DataServiceProtocolVersion maxProtocolVersion, DataServiceProtocolVersion maxDataServiceVersion)
{
DataServiceProtocolVersion expectedVersion = DataServiceProtocolVersion.V4;
if (requestUri.IncludesInlineCountAllPages())
{
expectedVersion = expectedVersion.IncreaseVersionIfRequired(DataServiceProtocolVersion.V4);
}
if (requestUri.IsCount())
{
expectedVersion = expectedVersion.IncreaseVersionIfRequired(DataServiceProtocolVersion.V4);
}
else if (requestUri.IsProperty())
{
var propertySegment = requestUri.LastSegment as PropertySegment;
expectedVersion = expectedVersion.IncreaseVersionIfRequired(propertySegment.Property.CalculateProtocolVersion());
}
else if (!requestUri.IsNamedStream())
{
// Check service operations returning non-entity types
if (requestUri.IsServiceOperation())
{
var serviceOpSegment = requestUri.Segments.OfType <FunctionSegment>().Single();
DataType returnType = serviceOpSegment.Function.ReturnType;
// Service ops returning complex values or bags of complex values, where the complex type has bag properties, are v3
var collectionType = returnType as CollectionDataType;
if (collectionType != null)
{
// for service operations, the fact that a collection is returned does not mean it is a multivalue
// so we unwrap the element type before calculating the version
returnType = collectionType.ElementDataType;
}
expectedVersion = expectedVersion.IncreaseVersionIfRequired(returnType.CalculateDataTypeVersion());
}
// Check entity types
List <DataServiceProtocolVersion> dataServiceProtocolVersions = new List <DataServiceProtocolVersion>();
dataServiceProtocolVersions.Add(expectedVersion);
if (!(requestUri.IsEntityReferenceLink() || requestUri.IsPropertyValue()))
{
foreach (EntitySet entitySet in requestUri.GetAllEntitySetsIncludingExpands())
{
DataServiceProtocolVersion entitySetVersion = entitySet.CalculateEntitySetProtocolVersion(contentType, VersionCalculationType.Response, maxProtocolVersion, maxDataServiceVersion);
dataServiceProtocolVersions.Add(entitySetVersion);
if (entitySetVersion > maxDataServiceVersion)
{
return(VersionHelper.GetMaximumVersion(dataServiceProtocolVersions.ToArray()));
}
}
}
}
return(expectedVersion);
}
