/// <summary>
/// Creates a new instance of ODataAction or ODataFunction for the <paramref name="metadataReferencePropertyName"/>.
/// </summary>
/// <param name="readerContext">The Json operation deserializer context.</param>
/// <param name="metadataReferencePropertyName">The name of the metadata reference property being read.</param>
/// <returns>A new instance of ODataAction or ODataFunction for the <paramref name="metadataReferencePropertyName"/>.</returns>
private ODataOperation CreateODataOperationAndAddToEntry(IODataJsonOperationsDeserializerContext readerContext, string metadataReferencePropertyName)
{
string fullyQualifiedOperationName = ODataJsonLightUtils.GetUriFragmentFromMetadataReferencePropertyName(this.ContextUriParseResult.MetadataDocumentUri, metadataReferencePropertyName);
IEdmOperation firstActionOrFunction = this.JsonLightInputContext.Model.ResolveOperations(fullyQualifiedOperationName).FirstOrDefault();
bool isAction;
if (firstActionOrFunction == null)
{
// Ignore the unknown function/action.
return null;
}
var operation = ODataJsonLightUtils.CreateODataOperation(this.ContextUriParseResult.MetadataDocumentUri, metadataReferencePropertyName, firstActionOrFunction, out isAction);
if (isAction)
{
readerContext.AddActionToEntry((ODataAction)operation);
}
else
{
readerContext.AddFunctionToEntry((ODataFunction)operation);
}
return operation;
}
/// <summary>
/// Reads one operation for the entry being read.
/// </summary>
/// <param name="readerContext">The Json operation deserializer context.</param>
/// <param name="entryState">The state of the reader for entry to read.</param>
/// <param name="metadataReferencePropertyName">The name of the metadata reference property being read.</param>
/// <param name="insideArray">true if the operation value is inside an array, i.e. multiple targets for the operation; false otherwise.</param>
/// <remarks>
/// Pre-Condition: JsonNodeType.StartObject: first node of the operation value.
/// Post-Condition: JsonNodeType.Property: the property after the current operation being read when there is one target for the operation.
/// JsonNodeType.StartObject: the first node of the next operation value when there are multiple targets for the operation.
/// JsonNodeType.EndArray: the end-array of the operation values when there are multiple target for the operation.
/// </remarks>
private void ReadSingleOperationValue(IODataJsonOperationsDeserializerContext readerContext, IODataJsonLightReaderEntryState entryState, string metadataReferencePropertyName, bool insideArray)
{
Debug.Assert(readerContext != null, "readerContext != null");
Debug.Assert(!string.IsNullOrEmpty(metadataReferencePropertyName), "!string.IsNullOrEmpty(metadataReferencePropertyName)");
Debug.Assert(ODataJsonLightUtils.IsMetadataReferenceProperty(metadataReferencePropertyName), "ODataJsonLightReaderUtils.IsMetadataReferenceProperty(metadataReferencePropertyName)");
if (readerContext.JsonReader.NodeType != JsonNodeType.StartObject)
{
throw new ODataException(ODataErrorStrings.ODataJsonOperationsDeserializerUtils_OperationsPropertyMustHaveObjectValue(metadataReferencePropertyName, readerContext.JsonReader.NodeType));
}
// read over the start-object node of the metadata object for the operations
readerContext.JsonReader.ReadStartObject();
var operation = this.CreateODataOperationAndAddToEntry(readerContext, metadataReferencePropertyName);
// Ignore the unrecognized operation.
if (operation == null)
{
while (readerContext.JsonReader.NodeType == JsonNodeType.Property)
{
readerContext.JsonReader.ReadPropertyName();
readerContext.JsonReader.SkipValue();
}
readerContext.JsonReader.ReadEndObject();
return;
}
Debug.Assert(operation.Metadata != null, "operation.Metadata != null");
while (readerContext.JsonReader.NodeType == JsonNodeType.Property)
{
string operationPropertyName = ODataAnnotationNames.RemoveAnnotationPrefix(readerContext.JsonReader.ReadPropertyName());
switch (operationPropertyName)
{
case JsonConstants.ODataOperationTitleName:
if (operation.Title != null)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightEntryAndFeedDeserializer_MultipleOptionalPropertiesInOperation(operationPropertyName, metadataReferencePropertyName));
}
string titleString = readerContext.JsonReader.ReadStringValue(JsonConstants.ODataOperationTitleName);
ODataJsonLightValidationUtils.ValidateOperationPropertyValueIsNotNull(titleString, operationPropertyName, metadataReferencePropertyName);
operation.Title = titleString;
break;
case JsonConstants.ODataOperationTargetName:
if (operation.Target != null)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightEntryAndFeedDeserializer_MultipleOptionalPropertiesInOperation(operationPropertyName, metadataReferencePropertyName));
}
string targetString = readerContext.JsonReader.ReadStringValue(JsonConstants.ODataOperationTargetName);
ODataJsonLightValidationUtils.ValidateOperationPropertyValueIsNotNull(targetString, operationPropertyName, metadataReferencePropertyName);
operation.Target = readerContext.ProcessUriFromPayload(targetString);
break;
default:
// skip over all unknown properties and read the next property or
// the end of the metadata for the current propertyName
readerContext.JsonReader.SkipValue();
break;
}
}
if (operation.Target == null && insideArray)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightEntryAndFeedDeserializer_OperationMissingTargetProperty(metadataReferencePropertyName));
}
// read the end-object node of the target / title pair
readerContext.JsonReader.ReadEndObject();
// Sets the metadata builder to evaluate by convention any operation property that's not on the wire.
// Note we must only set this after the operation is read from the wire since we lose the ability to tell
// what was on the wire and what is being dynamically computed.
this.SetMetadataBuilder(entryState, operation);
}
