/// <summary>
/// Writes a json node to the internal buffer.
/// </summary>
/// <param name="jsonNavigator">The navigator to use to navigate the node</param>
/// <param name="jsonNavigatorNode">The node to write.</param>
public void WriteJsonNode(IJsonNavigator jsonNavigator, IJsonNavigatorNode jsonNavigatorNode)
{
if (jsonNavigator == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigator)} can not be null");
}
if (jsonNavigatorNode == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigatorNode)} can not be null");
}
// For now short circuit this to false until we figure out how to optimize this.
bool sameFormat = jsonNavigator.SerializationFormat == this.SerializationFormat && (this.SerializationFormat == JsonSerializationFormat.Binary || this.SerializationFormat == JsonSerializationFormat.HybridRow);
JsonNodeType jsonNodeType = jsonNavigator.GetNodeType(jsonNavigatorNode);
// See if we can write the node without looking at it's value
switch (jsonNodeType)
{
case JsonNodeType.Null:
this.WriteNullValue();
return;
case JsonNodeType.False:
this.WriteBoolValue(false);
return;
case JsonNodeType.True:
this.WriteBoolValue(true);
return;
}
// If the navigator has the same format as this writer then we try to retrieve the node raw JSON
IReadOnlyList <byte> bufferedRawJson;
if (sameFormat && jsonNavigator.TryGetBufferedRawJson(jsonNavigatorNode, out bufferedRawJson))
{
// Token type really doesn't make any difference other than whether this is a field name
JsonTokenType jsonTokenType = (jsonNodeType == JsonNodeType.FieldName ? JsonTokenType.FieldName : JsonTokenType.Null);
this.WriteRawJsonToken(jsonTokenType, bufferedRawJson);
}
else
{
// Either the formats did not match or we couldn't retrieve the buffered raw JSON
switch (jsonNodeType)
{
case JsonNodeType.Number:
double numberValue = jsonNavigator.GetNumberValue(jsonNavigatorNode);
this.WriteNumberValue(numberValue);
break;
case JsonNodeType.String:
case JsonNodeType.FieldName:
bool fieldName = jsonNodeType == JsonNodeType.FieldName;
IReadOnlyList <byte> bufferedStringValue;
if (jsonNavigator.TryGetBufferedStringValue(jsonNavigatorNode, out bufferedStringValue))
{
if (fieldName)
{
this.WriteRawJsonToken(JsonTokenType.FieldName, bufferedStringValue);
}
else
{
this.WriteRawJsonToken(JsonTokenType.String, bufferedStringValue);
}
}
else
{
string value = jsonNavigator.GetStringValue(jsonNavigatorNode);
if (fieldName)
{
this.WriteFieldName(value);
}
else
{
this.WriteStringValue(value);
}
}
break;
case JsonNodeType.Int8:
{
sbyte number = jsonNavigator.GetInt8Value(jsonNavigatorNode);
this.WriteInt8Value(number);
break;
}
case JsonNodeType.Int16:
{
short number = jsonNavigator.GetInt16Value(jsonNavigatorNode);
this.WriteInt16Value(number);
break;
}
case JsonNodeType.Int32:
{
int number = jsonNavigator.GetInt32Value(jsonNavigatorNode);
this.WriteInt32Value(number);
break;
}
case JsonNodeType.Int64:
{
long number = jsonNavigator.GetInt64Value(jsonNavigatorNode);
this.WriteInt64Value(number);
break;
}
case JsonNodeType.UInt32:
{
uint number = jsonNavigator.GetUInt32Value(jsonNavigatorNode);
this.WriteUInt32Value(number);
break;
}
case JsonNodeType.Float32:
{
float number = jsonNavigator.GetFloat32Value(jsonNavigatorNode);
this.WriteFloat32Value(number);
break;
}
case JsonNodeType.Float64:
{
double number = jsonNavigator.GetFloat64Value(jsonNavigatorNode);
this.WriteFloat64Value(number);
break;
}
case JsonNodeType.Guid:
{
Guid number = jsonNavigator.GetGuidValue(jsonNavigatorNode);
this.WriteGuidValue(number);
break;
}
case JsonNodeType.Binary:
{
IReadOnlyList <byte> bufferedBinaryValue;
if (jsonNavigator.TryGetBufferedBinaryValue(jsonNavigatorNode, out bufferedBinaryValue))
{
this.WriteRawJsonToken(JsonTokenType.Binary, bufferedBinaryValue);
}
else
{
IReadOnlyList <byte> value = jsonNavigator.GetBinaryValue(jsonNavigatorNode);
this.WriteBinaryValue(value);
}
break;
}
case JsonNodeType.Array:
this.WriteArrayStart();
foreach (IJsonNavigatorNode arrayItem in jsonNavigator.GetArrayItems(jsonNavigatorNode))
{
this.WriteJsonNode(jsonNavigator, arrayItem);
}
this.WriteArrayEnd();
break;
case JsonNodeType.Object:
this.WriteObjectStart();
foreach (ObjectProperty objectProperty in jsonNavigator.GetObjectProperties(jsonNavigatorNode))
{
this.WriteJsonNode(jsonNavigator, objectProperty.NameNode);
this.WriteJsonNode(jsonNavigator, objectProperty.ValueNode);
}
this.WriteObjectEnd();
break;
default:
throw new ArgumentException($"Unexpected JsonNodeType: {jsonNodeType}");
}
}
}
/// <summary>
/// Converts a list of CosmosElements into a memory stream.
/// </summary>
/// <param name="memoryStream">The memory stream response from Azure Cosmos</param>
/// <param name="resourceType">The resource type</param>
/// <param name="cosmosSerializationOptions">The custom serialization options. This allows custom serialization types like BSON, JSON, or other formats</param>
/// <returns>Returns a memory stream of cosmos elements. By default the memory stream will contain JSON.</returns>
internal static CosmosArray ToCosmosElements(
MemoryStream memoryStream,
ResourceType resourceType,
CosmosSerializationFormatOptions cosmosSerializationOptions = null)
{
if (!memoryStream.CanRead)
{
throw new InvalidDataException("Stream can not be read");
}
// Execute the callback an each element of the page
// For example just could get a response like this
// {
// "_rid": "qHVdAImeKAQ=",
// "Documents": [{
// "id": "03230",
// "_rid": "qHVdAImeKAQBAAAAAAAAAA==",
// "_self": "dbs\/qHVdAA==\/colls\/qHVdAImeKAQ=\/docs\/qHVdAImeKAQBAAAAAAAAAA==\/",
// "_etag": "\"410000b0-0000-0000-0000-597916b00000\"",
// "_attachments": "attachments\/",
// "_ts": 1501107886
// }],
// "_count": 1
// }
// And you should execute the callback on each document in "Documents".
long responseLengthBytes = memoryStream.Length;
byte[] content = memoryStream.ToArray();
IJsonNavigator jsonNavigator = null;
// Use the users custom navigator
if (cosmosSerializationOptions != null)
{
jsonNavigator = cosmosSerializationOptions.CreateCustomNavigatorCallback(content);
if (jsonNavigator == null)
{
throw new InvalidOperationException("The CosmosSerializationOptions did not return a JSON navigator.");
}
}
else
{
jsonNavigator = JsonNavigator.Create(new ArraySegment <byte>(content));
}
string resourceName = CosmosElementSerializer.GetRootNodeName(resourceType);
CosmosArray documents;
if ((jsonNavigator.SerializationFormat == JsonSerializationFormat.Binary) && jsonNavigator.TryGetObjectProperty(
jsonNavigator.GetRootNode(),
"stringDictionary",
out ObjectProperty stringDictionaryProperty))
{
// Payload is string dictionary encode so we have to decode using the string dictionary.
IJsonNavigatorNode stringDictionaryNode = stringDictionaryProperty.ValueNode;
JsonStringDictionary jsonStringDictionary = JsonStringDictionary.CreateFromStringArray(
jsonNavigator
.GetArrayItems(stringDictionaryNode)
.Select(item => jsonNavigator.GetStringValue(item))
.ToList());
if (!jsonNavigator.TryGetObjectProperty(
jsonNavigator.GetRootNode(),
resourceName,
out ObjectProperty resourceProperty))
{
throw new InvalidOperationException($"Response Body Contract was violated. QueryResponse did not have property: {resourceName}");
}
IJsonNavigatorNode resources = resourceProperty.ValueNode;
if (!jsonNavigator.TryGetBufferedBinaryValue(resources, out ReadOnlyMemory <byte> resourceBinary))
{
resourceBinary = jsonNavigator.GetBinaryValue(resources);
}
IJsonNavigator navigatorWithStringDictionary = JsonNavigator.Create(resourceBinary, jsonStringDictionary);
if (!(CosmosElement.Dispatch(
navigatorWithStringDictionary,
navigatorWithStringDictionary.GetRootNode()) is CosmosArray cosmosArray))
{
throw new InvalidOperationException($"QueryResponse did not have an array of : {resourceName}");
}
documents = cosmosArray;
}
else
{
// Payload is not string dictionary encoded so we can just do for the documents as is.
if (!jsonNavigator.TryGetObjectProperty(
jsonNavigator.GetRootNode(),
resourceName,
out ObjectProperty objectProperty))
{
throw new InvalidOperationException($"Response Body Contract was violated. QueryResponse did not have property: {resourceName}");
}
if (!(CosmosElement.Dispatch(
jsonNavigator,
objectProperty.ValueNode) is CosmosArray cosmosArray))
{
throw new InvalidOperationException($"QueryResponse did not have an array of : {resourceName}");
}
documents = cosmosArray;
}
return(documents);
}