/// <summary>
/// Writes an <see cref="ODataError"/> into the message payload.
/// </summary>
/// <param name="error">The error to write.</param>
/// <param name="includeDebugInformation">
/// A flag indicating whether debug information (e.g., the inner error from the <paramref name="error"/>) should
/// be included in the payload. This should only be used in debug scenarios.
/// </param>
/// <remarks>
/// This method is called if the ODataMessageWriter.WriteError is called once some other
/// write operation has already started.
/// The method should write the in-stream error representation for the specific format into the current payload.
/// Before the method is called no flush is performed on the output context or any active writer.
/// It is the responsibility of this method to flush the output before the method returns.
/// </remarks>
internal override void WriteInStreamError(ODataError error, bool includeDebugInformation)
{
this.AssertSynchronous();
ODataMetadataWriterUtils.WriteError(this.xmlWriter, error, includeDebugInformation, this.MessageWriterSettings.MessageQuotas.MaxNestingDepth);
this.Flush();
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="messageInfo">The context information for the message.</param>
/// <param name="messageWriterSettings">Configuration settings of the OData writer.</param>
internal ODataMetadataOutputContext(
ODataMessageInfo messageInfo,
ODataMessageWriterSettings messageWriterSettings)
: base(ODataFormat.Metadata, messageInfo, messageWriterSettings)
{
Debug.Assert(messageInfo.MessageStream != null, "messageInfo.MessageStream != null");
try
{
this.messageOutputStream = messageInfo.MessageStream;
Stream outputStream;
if (this.Synchronous)
{
outputStream = this.messageOutputStream;
}
else
{
this.asynchronousOutputStream = new AsyncBufferedStream(this.messageOutputStream);
outputStream = this.asynchronousOutputStream;
}
this.xmlWriter = ODataMetadataWriterUtils.CreateXmlWriter(outputStream, messageWriterSettings, messageInfo.Encoding);
}
catch (Exception e)
{
// Dispose the message stream if we failed to create the output context.
if (ExceptionUtils.IsCatchableExceptionType(e))
{
this.messageOutputStream.Dispose();
}
throw;
}
}
/// <summary>
/// Writes an <see cref="ODataError"/> into the message payload.
/// </summary>
/// <param name="error">The error to write.</param>
/// <param name="includeDebugInformation">
/// A flag indicating whether debug information (e.g., the inner error from the <paramref name="error"/>) should
/// be included in the payload. This should only be used in debug scenarios.
/// </param>
/// <returns>Task which represents the pending write operation.</returns>
internal override Task WriteInStreamErrorAsync(ODataError error, bool includeDebugInformation)
{
this.AssertAsynchronous();
return(TaskUtils.GetTaskForSynchronousOperationReturningTask(
() =>
{
ODataMetadataWriterUtils.WriteError(this.xmlWriter, error, includeDebugInformation, this.MessageWriterSettings.MessageQuotas.MaxNestingDepth);
return this.FlushAsync();
}));
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="messageInfo">The context information for the message.</param>
/// <param name="messageWriterSettings">Configuration settings of the OData writer.</param>
internal ODataMetadataOutputContext(
ODataMessageInfo messageInfo,
ODataMessageWriterSettings messageWriterSettings)
: base(ODataFormat.Metadata, messageInfo, messageWriterSettings)
{
Debug.Assert(messageInfo.MessageStream != null, "messageInfo.MessageStream != null");
Debug.Assert(!messageInfo.IsAsync, "Metadata output context is only supported in synchronous operations.");
try
{
this.messageOutputStream = messageInfo.MessageStream;
this.xmlWriter = ODataMetadataWriterUtils.CreateXmlWriter(this.messageOutputStream, messageWriterSettings, messageInfo.Encoding);
}
catch (Exception e)
{
// Dispose the message stream if we failed to create the output context.
if (ExceptionUtils.IsCatchableExceptionType(e))
{
this.messageOutputStream.Dispose();
}
throw;
}
}
