/// <summary>
/// Creates a batch reader stream backed by memory stream containing data the current
/// Json object the reader is pointing at.
/// Current supported data types are Json and binary types.
/// </summary>
/// <param name="contentTypeHeader">The content-type header value of the request.</param>
/// <returns>The memory stream.</returns>
private ODataJsonLightBatchBodyContentReaderStream CreateJsonPayloadBodyContentStream(string contentTypeHeader)
{
// Serialization of json object to batch buffer.
ODataJsonLightBatchBodyContentReaderStream stream =
new ODataJsonLightBatchBodyContentReaderStream(listener);
this.isStreamPopulated = stream.PopulateBodyContent(this.jsonReader, contentTypeHeader);
return(stream);
}
/// <summary>
/// Asynchronously creates a batch reader stream backed by memory stream containing data the current
/// Json object the reader is pointing at.
/// Current supported data types are Json and binary types.
/// </summary>
/// <param name="contentTypeHeader">The content-type header value of the request.</param>
/// <returns>
/// A task that represents the asynchronous operation.
/// The value of the TResult parameter contains the wrapper stream backed by memory stream.
/// </returns>
private async Task <ODataJsonLightBatchBodyContentReaderStream> CreateJsonPayloadBodyContentStreamAsync(string contentTypeHeader)
{
// Serialization of json object to batch buffer.
ODataJsonLightBatchBodyContentReaderStream stream = new ODataJsonLightBatchBodyContentReaderStream(listener);
this.isStreamPopulated = await stream.PopulateBodyContentAsync(this.asynchronousJsonReader, contentTypeHeader)
.ConfigureAwait(false);
return(stream);
}
/// <summary>
/// Wrapper method with validation to scan the Json object for known properties.
/// </summary>
private void ScanJsonProperties()
{
Debug.Assert(this.jsonReader != null, "this.jsonReaders != null");
Debug.Assert(this.jsonProperties == null, "this.jsonProperties == null");
this.jsonProperties = new Dictionary <string, object>();
string contentTypeHeader = null;
ODataJsonLightBatchBodyContentReaderStream bodyContentStream = null;
try
{
// Request object start.
this.jsonReader.ReadStartObject();
while (this.jsonReader.NodeType != JsonNodeType.EndObject)
{
// Convert to upper case to support case-insensitive request property names
string propertyName = Normalize(this.jsonReader.ReadPropertyName());
switch (propertyName)
{
case PropertyNameId:
case PropertyNameAtomicityGroup:
case PropertyNameMethod:
case PropertyNameUrl:
{
jsonProperties.Add(propertyName, this.jsonReader.ReadStringValue());
}
break;
case PropertyNameStatus:
{
jsonProperties.Add(propertyName, this.jsonReader.ReadPrimitiveValue());
}
break;
case PropertyNameDependsOn:
{
IList <string> dependsOnIds = new List <string>();
this.jsonReader.ReadStartArray();
while (this.jsonReader.NodeType != JsonNodeType.EndArray)
{
dependsOnIds.Add(this.jsonReader.ReadStringValue());
}
this.jsonReader.ReadEndArray();
jsonProperties.Add(propertyName, dependsOnIds);
}
break;
case PropertyNameHeaders:
{
ODataBatchOperationHeaders headers = new ODataBatchOperationHeaders();
// Use empty string (non-null value) to indicate that content-type header has been processed.
contentTypeHeader = "";
this.jsonReader.ReadStartObject();
while (this.jsonReader.NodeType != JsonNodeType.EndObject)
{
string headerName = this.jsonReader.ReadPropertyName();
string headerValue = this.jsonReader.ReadPrimitiveValue().ToString();
// Remember the Content-Type header value.
if (headerName.Equals(ODataConstants.ContentTypeHeader, StringComparison.OrdinalIgnoreCase))
{
contentTypeHeader = headerValue;
}
headers.Add(headerName, headerValue);
}
this.jsonReader.ReadEndObject();
jsonProperties.Add(propertyName, headers);
if (!this.isStreamPopulated && bodyContentStream != null)
{
// Populate the stream now since the body content has been cached and we now have content-type.
bodyContentStream.PopulateCachedBodyContent(contentTypeHeader);
}
}
break;
case PropertyNameBody:
{
bodyContentStream = CreateJsonPayloadBodyContentStream(contentTypeHeader);
jsonProperties.Add(propertyName, bodyContentStream);
}
break;
default:
{
throw new ODataException(string.Format(
CultureInfo.InvariantCulture,
"Unknown property name '{0}' for message in batch",
propertyName));
}
}
}
// Request object end.
this.jsonReader.ReadEndObject();
}
finally
{
// We don't need to use the Json reader anymore.
this.jsonReader = null;
}
}
/// <summary>
/// Wrapper method with validation to asynchronously scan the JSON object for known properties.
/// </summary>
/// <returns>A task that represents the asynchronous read operation.</returns>
private async Task ScanJsonPropertiesAsync()
{
Debug.Assert(this.asynchronousJsonReader != null, $"{nameof(this.asynchronousJsonReader)} != null");
Debug.Assert(this.jsonProperties == null, $"{nameof(this.jsonProperties)} == null");
this.jsonProperties = new Dictionary <string, object>();
string contentTypeHeader = null;
ODataJsonLightBatchBodyContentReaderStream bodyContentStream = null;
try
{
// Request object start.
await this.asynchronousJsonReader.ReadStartObjectAsync()
.ConfigureAwait(false);
while (this.asynchronousJsonReader.NodeType != JsonNodeType.EndObject)
{
// Convert to upper case to support case-insensitive request property names
string propertyName = Normalize(await this.asynchronousJsonReader.ReadPropertyNameAsync().ConfigureAwait(false));
switch (propertyName)
{
case PropertyNameId:
case PropertyNameAtomicityGroup:
case PropertyNameMethod:
case PropertyNameUrl:
jsonProperties.Add(
propertyName,
await this.asynchronousJsonReader.ReadStringValueAsync().ConfigureAwait(false));
break;
case PropertyNameStatus:
jsonProperties.Add(
propertyName,
await this.asynchronousJsonReader.ReadPrimitiveValueAsync().ConfigureAwait(false));
break;
case PropertyNameDependsOn:
List <string> dependsOnIds = new List <string>();
await this.asynchronousJsonReader.ReadStartArrayAsync()
.ConfigureAwait(false);
while (this.asynchronousJsonReader.NodeType != JsonNodeType.EndArray)
{
dependsOnIds.Add(await this.asynchronousJsonReader.ReadStringValueAsync().ConfigureAwait(false));
}
await this.asynchronousJsonReader.ReadEndArrayAsync()
.ConfigureAwait(false);
jsonProperties.Add(propertyName, dependsOnIds);
break;
case PropertyNameHeaders:
ODataBatchOperationHeaders headers = new ODataBatchOperationHeaders();
// Use empty string (non-null value) to indicate that content-type header has been processed.
contentTypeHeader = "";
await this.asynchronousJsonReader.ReadStartObjectAsync()
.ConfigureAwait(false);
while (this.asynchronousJsonReader.NodeType != JsonNodeType.EndObject)
{
string headerName = await this.asynchronousJsonReader.ReadPropertyNameAsync()
.ConfigureAwait(false);
string headerValue = (await this.asynchronousJsonReader.ReadPrimitiveValueAsync().ConfigureAwait(false)).ToString();
// Remember the Content-Type header value.
if (headerName.Equals(ODataConstants.ContentTypeHeader, StringComparison.OrdinalIgnoreCase))
{
contentTypeHeader = headerValue;
}
headers.Add(headerName, headerValue);
}
await this.asynchronousJsonReader.ReadEndObjectAsync()
.ConfigureAwait(false);
jsonProperties.Add(propertyName, headers);
if (!this.isStreamPopulated && bodyContentStream != null)
{
// Populate the stream now since the body content has been cached and we now have content-type.
await bodyContentStream.PopulateCachedBodyContentAsync(contentTypeHeader)
.ConfigureAwait(false);
}
break;
case PropertyNameBody:
bodyContentStream = await CreateJsonPayloadBodyContentStreamAsync(contentTypeHeader)
.ConfigureAwait(false);
jsonProperties.Add(propertyName, bodyContentStream);
break;
default:
throw new ODataException(Strings.ODataJsonLightBatchPayloadItemPropertiesCache_UnknownPropertyForMessageInBatch(propertyName));
}
}
// Request object end.
await this.asynchronousJsonReader.ReadEndObjectAsync()
.ConfigureAwait(false);
}
finally
{
// We don't need to use the Json reader anymore.
this.asynchronousJsonReader = null;
}
}
