/// <summary>
/// Reads the DataServiceVersion header from the <paramref name="message"/> and parses it.
/// If no DataServiceVersion header is found it sets the default version to be used for reading.
/// </summary>
/// <param name="message">The message to get the data service version header from.</param>
/// <param name="defaultVersion">The default version to use if the header was not specified.</param>
/// <returns>
/// The <see cref="ODataVersion"/> retrieved from the DataServiceVersion header of the message.
/// The default version if none is specified in the header.
/// </returns>
public static ODataVersion GetDataServiceVersion(this IODataRequestMessage message, ODataVersion defaultVersion)
{
// translation from IODataResponseMessage to ODataMessage to pass into GetDataServiceVersion.
// we retain all of the data we need from the message, with a few extra data that aren't used in.
// GetDataServiceVersion. Not ideal, but it works.
ODataMessage odataMessage = new ODataRequestMessage(message, false /*writing*/, false /*disableMessageStreamDisposal*/, Int64.MaxValue /*maxMessageSize*/);
return(ODataUtilsInternal.GetDataServiceVersion(odataMessage, defaultVersion));
}
public ODataMessageReader(IODataResponseMessage responseMessage, ODataMessageReaderSettings settings, IEdmModel model)
{
this.readerPayloadKind = ODataPayloadKind.Unsupported;
ExceptionUtils.CheckArgumentNotNull <IODataResponseMessage>(responseMessage, "responseMessage");
this.settings = (settings == null) ? new ODataMessageReaderSettings() : new ODataMessageReaderSettings(settings);
ReaderValidationUtils.ValidateMessageReaderSettings(this.settings, true);
this.readingResponse = true;
this.message = new ODataResponseMessage(responseMessage, false, this.settings.DisableMessageStreamDisposal, this.settings.MessageQuotas.MaxReceivedMessageSize);
this.urlResolver = responseMessage as IODataUrlResolver;
this.version = ODataUtilsInternal.GetDataServiceVersion(this.message, this.settings.MaxProtocolVersion);
this.model = model ?? EdmCoreModel.Instance;
ODataVersionChecker.CheckVersionSupported(this.version, this.settings);
}
private void EnsureODataVersion()
{
if (!this.settings.Version.HasValue)
{
this.settings.Version = new ODataVersion?(ODataUtilsInternal.GetDataServiceVersion(this.message, ODataVersion.V3));
}
else
{
ODataUtilsInternal.SetDataServiceVersion(this.message, this.settings);
}
if ((((ODataVersion)this.settings.Version) >= ODataVersion.V3) && (this.settings.WriterBehavior.FormatBehaviorKind != ODataBehaviorKind.Default))
{
this.settings.WriterBehavior.UseDefaultFormatBehavior();
}
}
private bool TryGetSinglePayloadKindResultFromContentType(out IEnumerable <ODataPayloadKindDetectionResult> payloadKindResults, out MediaType contentType)
{
if (this.message.UseBufferingReadStream == true)
{
throw new ODataException(Microsoft.Data.OData.Strings.ODataMessageReader_DetectPayloadKindMultipleTimes);
}
IList <ODataPayloadKindDetectionResult> list = MediaTypeUtils.GetPayloadKindsForContentType(this.GetContentTypeHeader(), this.MediaTypeResolver, out contentType);
payloadKindResults = from r in list
where ODataUtilsInternal.IsPayloadKindSupported(r.PayloadKind, !this.readingResponse)
select r;
if (payloadKindResults.Count <ODataPayloadKindDetectionResult>() > 1)
{
this.message.UseBufferingReadStream = true;
return(false);
}
return(true);
}
