/// <summary>
/// Detects the payload kind(s) from the message stream.
/// </summary>
/// <param name="messageStream">The message stream to read from for payload kind detection.</param>
/// <param name="detectionInfo">Additional information available for the payload kind detection.</param>
/// <returns>An enumerable of zero or one payload kinds depending on whether the metadata payload kind was detected or not.</returns>
private static IEnumerable <ODataPayloadKind> DetectPayloadKindImplementation(Stream messageStream, ODataPayloadKindDetectionInfo detectionInfo)
{
try
{
using (XmlReader reader = ODataAtomReaderUtils.CreateXmlReader(messageStream, detectionInfo.GetEncoding(), detectionInfo.MessageReaderSettings))
{
if (reader.TryReadToNextElement() && string.CompareOrdinal(EdmConstants.EdmxName, reader.LocalName) == 0)
{
switch (reader.NamespaceURI)
{
case EdmConstants.EdmxVersion1Namespace:
case EdmConstants.EdmxVersion2Namespace:
case EdmConstants.EdmxVersion3Namespace:
return(new ODataPayloadKind[] { ODataPayloadKind.MetadataDocument });
}
}
}
}
catch (XmlException)
{
// If we are not able to read the payload as XML it is not a metadata document.
// Return no detected payload kind below.
}
return(Enumerable.Empty <ODataPayloadKind>());
}
private ODataMetadataInputContext(ODataFormat format, Stream messageStream, Encoding encoding, ODataMessageReaderSettings messageReaderSettings, ODataVersion version, bool readingResponse, bool synchronous, IEdmModel model, IODataUrlResolver urlResolver) : base(format, messageReaderSettings, version, readingResponse, synchronous, model, urlResolver)
{
ExceptionUtils.CheckArgumentNotNull <ODataFormat>(format, "format");
ExceptionUtils.CheckArgumentNotNull <ODataMessageReaderSettings>(messageReaderSettings, "messageReaderSettings");
try
{
this.baseXmlReader = ODataAtomReaderUtils.CreateXmlReader(messageStream, encoding, messageReaderSettings);
this.xmlReader = new BufferingXmlReader(this.baseXmlReader, null, messageReaderSettings.BaseUri, false, messageReaderSettings.MessageQuotas.MaxNestingDepth, messageReaderSettings.ReaderBehavior.ODataNamespace);
}
catch (Exception exception)
{
if (ExceptionUtils.IsCatchableExceptionType(exception) && (messageStream != null))
{
messageStream.Dispose();
}
throw;
}
}
private static IEnumerable <ODataPayloadKind> DetectPayloadKindImplementation(Stream messageStream, ODataPayloadKindDetectionInfo detectionInfo)
{
try
{
using (XmlReader reader = ODataAtomReaderUtils.CreateXmlReader(messageStream, detectionInfo.GetEncoding(), detectionInfo.MessageReaderSettings))
{
string str;
if (((reader.TryReadToNextElement() && (string.CompareOrdinal("Edmx", reader.LocalName) == 0)) && ((str = reader.NamespaceURI) != null)) && (((str == "http://schemas.microsoft.com/ado/2007/06/edmx") || (str == "http://schemas.microsoft.com/ado/2008/10/edmx")) || (str == "http://schemas.microsoft.com/ado/2009/11/edmx")))
{
return(new ODataPayloadKind[] { ODataPayloadKind.MetadataDocument });
}
}
}
catch (XmlException)
{
}
return(Enumerable.Empty <ODataPayloadKind>());
}
/// <summary>Constructor.</summary>
/// <param name="format">The format for this input context.</param>
/// <param name="messageStream">The stream to read data from.</param>
/// <param name="encoding">The encoding to use to read the input.</param>
/// <param name="messageReaderSettings">Configuration settings of the OData reader.</param>
/// <param name="version">The OData protocol version to be used for reading the payload.</param>
/// <param name="readingResponse">true if reading a response message; otherwise false.</param>
/// <param name="synchronous">true if the input should be read synchronously; false if it should be read asynchronously.</param>
/// <param name="model">The model to use.</param>
/// <param name="urlResolver">The optional URL resolver to perform custom URL resolution for URLs read from the payload.</param>
internal ODataMetadataInputContext(
ODataFormat format,
Stream messageStream,
Encoding encoding,
ODataMessageReaderSettings messageReaderSettings,
ODataVersion version,
bool readingResponse,
bool synchronous,
IEdmModel model,
IODataUrlResolver urlResolver)
: base(format, messageReaderSettings, version, readingResponse, synchronous, model, urlResolver)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(messageStream != null, "stream != null");
ExceptionUtils.CheckArgumentNotNull(format, "format");
ExceptionUtils.CheckArgumentNotNull(messageReaderSettings, "messageReaderSettings");
try
{
this.baseXmlReader = ODataAtomReaderUtils.CreateXmlReader(messageStream, encoding, messageReaderSettings);
// We use the buffering reader here only for in-stream error detection (not for buffering).
this.xmlReader = new BufferingXmlReader(
this.baseXmlReader,
/*parentXmlReader*/ null,
messageReaderSettings.BaseUri,
/*disableXmlBase*/ false,
messageReaderSettings.MessageQuotas.MaxNestingDepth,
messageReaderSettings.ReaderBehavior.ODataNamespace);
}
catch (Exception e)
{
// Dispose the message stream if we failed to create the input context.
if (ExceptionUtils.IsCatchableExceptionType(e) && messageStream != null)
{
messageStream.Dispose();
}
throw;
}
}
