/// <summary>
/// Dispose the update provider instance
/// </summary>
internal void DisposeProvider()
{
if (this.updateProvider != null)
{
WebUtil.Dispose(this.updateProvider);
this.updateProvider = null;
}
}
internal static void SerializeODataError(HandleExceptionArgs args, ODataMessageWriter writer, Stream outputStream, Encoding encoding)
{
ODataError error = CreateODataErrorFromExceptionArgs(args);
try
{
writer.WriteError(error, args.UseVerboseErrors);
}
catch (InvalidOperationException)
{
if (!WebUtil.CompareMimeType(args.ResponseContentType, "application/json;odata=verbose"))
{
WebUtil.Dispose(writer);
using (XmlWriter writer2 = XmlWriter.Create(outputStream, XmlUtil.CreateXmlWriterSettings(encoding)))
{
ErrorUtils.WriteXmlError(writer2, error, args.UseVerboseErrors, 100);
}
}
}
}
/// <summary>
/// Get the single result from the given segment info
/// </summary>
/// <param name="segmentInfo">segmentInfo which contains the request query</param>
/// <returns>query result as returned by the IQueryable query</returns>
internal static IEnumerator GetSingleResultFromEnumerable(SegmentInfo segmentInfo)
{
IEnumerator queryResults = WebUtil.GetRequestEnumerator(segmentInfo.RequestEnumerable);
bool shouldDispose = true;
try
{
WebUtil.CheckResourceExists(queryResults.MoveNext(), segmentInfo.Identifier);
CheckQueryResult(queryResults.Current, segmentInfo);
shouldDispose = false;
return(queryResults);
}
finally
{
// Dispose the Enumerator in case of error
if (shouldDispose)
{
WebUtil.Dispose(queryResults);
}
}
}
/// <summary>Writes the request body to the specified <see cref="Stream"/>.</summary>
/// <param name="stream">Stream to write to.</param>
internal void Write(Stream stream)
{
Debug.Assert(stream != null, "stream != null");
IExceptionWriter exceptionWriter = null;
try
{
switch (this.responseFormat)
{
case ContentFormat.Binary:
Debug.Assert(
this.requestDescription.TargetKind == RequestTargetKind.OpenPropertyValue ||
this.requestDescription.TargetKind == RequestTargetKind.PrimitiveValue ||
this.requestDescription.TargetKind == RequestTargetKind.MediaResource,
this.requestDescription.TargetKind + " is PrimitiveValue or OpenPropertyValue or StreamPropertyValue");
BinarySerializer binarySerializer = new BinarySerializer(stream);
exceptionWriter = binarySerializer;
if (this.requestDescription.TargetKind == RequestTargetKind.MediaResource)
{
Debug.Assert(this.mediaResourceStream != null, "this.mediaResourceStream != null");
binarySerializer.WriteRequest(this.mediaResourceStream, this.service.StreamProvider.StreamBufferSize);
}
else
{
binarySerializer.WriteRequest(this.queryResults.Current);
}
break;
case ContentFormat.Text:
Debug.Assert(
this.requestDescription.TargetKind == RequestTargetKind.OpenPropertyValue ||
this.requestDescription.TargetKind == RequestTargetKind.PrimitiveValue,
this.requestDescription.TargetKind + " is PrimitiveValue or OpenPropertyValue");
TextSerializer textSerializer = new TextSerializer(stream, this.encoding);
exceptionWriter = textSerializer;
textSerializer.WriteRequest(this.queryResults.Current);
break;
case ContentFormat.Atom:
case ContentFormat.Json:
case ContentFormat.PlainXml:
Debug.Assert(this.requestDescription.TargetKind != RequestTargetKind.PrimitiveValue, "this.requestDescription.TargetKind != RequestTargetKind.PrimitiveValue");
Debug.Assert(this.requestDescription.TargetKind != RequestTargetKind.OpenPropertyValue, "this.requestDescription.TargetKind != RequestTargetKind.OpenPropertyValue");
Debug.Assert(this.requestDescription.TargetKind != RequestTargetKind.Metadata, "this.requestDescription.TargetKind != RequestTargetKind.Metadata");
if (this.requestDescription.TargetKind == RequestTargetKind.ServiceDirectory)
{
if (this.responseFormat == ContentFormat.Json)
{
JsonServiceDocumentSerializer serviceSerializer = new JsonServiceDocumentSerializer(stream, this.Provider, this.encoding);
exceptionWriter = serviceSerializer;
serviceSerializer.WriteRequest();
break;
}
else
{
AtomServiceDocumentSerializer serviceSerializer = new AtomServiceDocumentSerializer(stream, this.AbsoluteServiceUri, this.Provider, this.encoding);
exceptionWriter = serviceSerializer;
serviceSerializer.WriteRequest(this.service);
}
}
else
{
Serializer serializer;
if (ContentFormat.Json == this.responseFormat)
{
serializer = new JsonSerializer(this.requestDescription, stream, this.AbsoluteServiceUri, this.service, this.encoding, this.Host.ResponseETag);
}
else if (ContentFormat.PlainXml == this.responseFormat)
{
serializer = new PlainXmlSerializer(this.requestDescription, this.AbsoluteServiceUri, this.service, stream, this.encoding);
}
else
{
Debug.Assert(
this.requestDescription.TargetKind == RequestTargetKind.OpenProperty ||
this.requestDescription.TargetKind == RequestTargetKind.Resource,
"TargetKind " + this.requestDescription.TargetKind + " == Resource || OpenProperty -- POX should have handled it otherwise.");
serializer = new SyndicationSerializer(
this.requestDescription,
this.AbsoluteServiceUri,
this.service,
stream,
this.encoding,
this.Host.ResponseETag,
new Atom10FormatterFactory());
}
exceptionWriter = serializer;
Debug.Assert(exceptionWriter != null, "this.exceptionWriter != null");
serializer.WriteRequest(this.queryResults, this.hasMoved);
}
break;
default:
Debug.Assert(
this.responseFormat == ContentFormat.MetadataDocument,
"responseFormat(" + this.responseFormat + ") == ContentFormat.MetadataDocument -- otherwise exception should have been thrown before");
Debug.Assert(this.requestDescription.TargetKind == RequestTargetKind.Metadata, "this.requestDescription.TargetKind == RequestTargetKind.Metadata");
MetadataSerializer metadataSerializer = new MetadataSerializer(stream, this.AbsoluteServiceUri, this.Provider, this.encoding);
exceptionWriter = metadataSerializer;
metadataSerializer.WriteRequest(this.service);
break;
}
}
catch (Exception exception)
{
if (!WebUtil.IsCatchableExceptionType(exception))
{
throw;
}
// Only JSON and XML are supported.
string contentType = (this.responseFormat == ContentFormat.Json) ? XmlConstants.MimeApplicationJson : XmlConstants.MimeApplicationXml;
ErrorHandler.HandleDuringWritingException(exception, this.service, contentType, exceptionWriter);
}
finally
{
WebUtil.Dispose(this.queryResults);
WebUtil.Dispose(this.mediaResourceStream);
}
}
internal void Write(Stream stream)
{
IExceptionWriter exceptionWriter = null;
Stream output = null;
Serializer serializer = null;
System.Data.Services.ODataResponseMessage responseMessage = this.responseMessage as System.Data.Services.ODataResponseMessage;
if (responseMessage != null)
{
responseMessage.SetStream(stream);
}
try
{
BinarySerializer serializer2;
MetadataSerializer serializer7;
switch (this.payloadKind)
{
case ODataPayloadKind.Feed:
case ODataPayloadKind.Entry:
{
EntitySerializer serializer6 = new EntitySerializer(this.requestDescription, this.AbsoluteServiceUri, this.service, this.service.OperationContext.Host.ResponseETag, this.messageWriter, this.contentFormat);
serializer = serializer6;
serializer6.WriteRequest(this.queryResults, this.hasMoved);
return;
}
case ODataPayloadKind.Property:
case ODataPayloadKind.EntityReferenceLink:
case ODataPayloadKind.EntityReferenceLinks:
case ODataPayloadKind.Collection:
{
NonEntitySerializer serializer5 = new NonEntitySerializer(this.requestDescription, this.AbsoluteServiceUri, this.service, this.messageWriter);
serializer = serializer5;
serializer5.WriteRequest(this.queryResults, this.hasMoved);
return;
}
case ODataPayloadKind.Value:
new TextSerializer(this.messageWriter).WriteRequest(this.queryResults.Current);
return;
case ODataPayloadKind.BinaryValue:
output = this.responseMessage.GetStream();
serializer2 = new BinarySerializer(output);
exceptionWriter = serializer2;
if (this.requestDescription.TargetKind != RequestTargetKind.MediaResource)
{
break;
}
if (this.mediaResourceStream != null)
{
serializer2.WriteRequest(this.mediaResourceStream, this.service.StreamProvider.StreamBufferSize);
}
return;
case ODataPayloadKind.ServiceDocument:
new ServiceDocumentSerializer(this.messageWriter).WriteServiceDocument(this.service.Provider);
return;
default:
goto Label_0194;
}
serializer2.WriteRequest(this.queryResults.Current);
return;
Label_0194:
serializer7 = new MetadataSerializer(this.messageWriter);
serializer7.WriteMetadataDocument(this.service);
}
catch (Exception exception)
{
if (!CommonUtil.IsCatchableExceptionType(exception))
{
throw;
}
if (serializer != null)
{
serializer.Flush();
}
string contentType = this.responseMessage.GetHeader("Content-Type").StartsWith("application/json", StringComparison.OrdinalIgnoreCase) ? "application/json;odata=verbose" : "application/xml";
if (this.messageWriter != null)
{
ErrorHandler.HandleDuringWritingException(exception, this.service, contentType, this.messageWriter, stream, this.encoding);
}
else
{
ErrorHandler.HandleDuringWritingException(exception, this.service, contentType, exceptionWriter);
}
}
finally
{
WebUtil.Dispose(this.messageWriter);
WebUtil.Dispose(this.queryResults);
WebUtil.Dispose(this.mediaResourceStream);
if ((output != null) && (responseMessage == null))
{
output.Dispose();
}
}
}