/// <summary>
/// Gets the expected options for the given content type and version
/// </summary>
/// <param name="contentType">The content type of the payload</param>
/// <param name="version">The current version</param>
/// <param name="payloadUri">The payload URI</param>
/// <returns>The payload options for the given content type and version</returns>
public ODataPayloadOptions GetExpectedPayloadOptions(string contentType, DataServiceProtocolVersion version, ODataUri payloadUri)
{
ExceptionUtilities.CheckArgumentNotNull(contentType, "contentType");
ExceptionUtilities.Assert(version != DataServiceProtocolVersion.Unspecified, "Version cannot be unspecified");
var expected = expectedPayloadOptions;
if (contentType.StartsWith(MimeTypes.ApplicationJsonODataLightNonStreaming, System.StringComparison.Ordinal) ||
contentType.StartsWith(MimeTypes.ApplicationJsonODataLightStreaming, System.StringComparison.Ordinal))
{
expected = ODataPayloadOptions.IncludeTypeNames
| ODataPayloadOptions.IncludeMediaResourceSourceLinks
| ODataPayloadOptions.IncludeMediaResourceEditLinks
| ODataPayloadOptions.IncludeNamedMediaResourceSourceLinks
| ODataPayloadOptions.IncludeNamedMediaResourceEditLinks
| ODataPayloadOptions.IncludeEntityIdentifier
| ODataPayloadOptions.ConventionallyProducedNamedStreamSelfLink;
var selectedPropertyNames = ODataUtilities.GetSelectedPropertyNamesFromUri(payloadUri, this.UriConverter).ToList();
if (selectedPropertyNames.Any())
{
EntitySet payloadEntitySet = null;
EntityType payloadEntityType = null;
if (payloadUri.TryGetExpectedEntitySetAndType(out payloadEntitySet, out payloadEntityType) &&
!ODataUtilities.ContainsAllIdentityPropertyNames(selectedPropertyNames, payloadEntityType))
{
// JSON Light projections without identity do not contain enough metadata to deduce
// id and link values.
expected = ODataPayloadOptions.IncludeTypeNames;
}
}
}
else if (version < DataServiceProtocolVersion.V4)
{
// Type names for null values are only supported in V1 and V2.
expected = expected | ODataPayloadOptions.IncludeTypeNamesForNullValues;
}
return(expected);
}
