public void WriteCollectionValue(ODataCollectionValue collectionValue, IEdmTypeReference metadataTypeReference, bool isTopLevelProperty, bool isInUri, bool isOpenPropertyType)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(collectionValue != null, "collectionValue != null");
Debug.Assert(!isTopLevelProperty || !isInUri, "Cannot be a top level property and in a uri");
this.IncreaseRecursionDepth();
// If the CollectionValue has type information write out the metadata and the type in it.
string typeName = collectionValue.TypeName;
if (isTopLevelProperty)
{
Debug.Assert(metadataTypeReference == null, "Never expect a metadata type for top-level properties.");
if (typeName == null)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightValueSerializer_MissingTypeNameOnCollection);
}
}
else
{
// In requests, we allow the metadata type reference to be null if the type name is specified in the OM
if (metadataTypeReference == null && !this.WritingResponse && typeName == null && this.Model.IsUserModel())
{
throw new ODataException(ODataErrorStrings.ODataJsonLightPropertyAndValueSerializer_NoExpectedTypeOrTypeNameSpecifiedForCollectionValueInRequest);
}
}
// resolve the type name to the type; if no type name is specified we will use the
// type inferred from metadata
IEdmCollectionTypeReference collectionTypeReference = (IEdmCollectionTypeReference)TypeNameOracle.ResolveAndValidateTypeNameForValue(this.Model, metadataTypeReference, collectionValue, isOpenPropertyType);
typeName = this.JsonLightOutputContext.TypeNameOracle.GetValueTypeNameForWriting(collectionValue, metadataTypeReference, collectionTypeReference, isOpenPropertyType);
bool useValueProperty = isInUri && !string.IsNullOrEmpty(typeName);
if (useValueProperty)
{
// "{"
this.JsonWriter.StartObjectScope();
ODataJsonLightWriterUtils.WriteODataTypeInstanceAnnotation(this.JsonWriter, typeName);
this.JsonWriter.WriteValuePropertyName();
}
// [
// This represents the array of items in the CollectionValue
this.JsonWriter.StartArrayScope();
// Iterate through the CollectionValue items and write them out (treat null Items as an empty enumeration)
IEnumerable items = collectionValue.Items;
if (items != null)
{
IEdmTypeReference expectedItemTypeReference = collectionTypeReference == null ? null : collectionTypeReference.ElementType();
DuplicatePropertyNamesChecker duplicatePropertyNamesChecker = null;
foreach (object item in items)
{
ValidationUtils.ValidateCollectionItem(item, false /* isStreamable */);
ODataComplexValue itemAsComplexValue = item as ODataComplexValue;
if (itemAsComplexValue != null)
{
if (duplicatePropertyNamesChecker == null)
{
duplicatePropertyNamesChecker = this.CreateDuplicatePropertyNamesChecker();
}
this.WriteComplexValue(
itemAsComplexValue,
expectedItemTypeReference,
false /*isTopLevel*/,
false /*isOpenPropertyType*/,
duplicatePropertyNamesChecker);
duplicatePropertyNamesChecker.Clear();
}
else
{
Debug.Assert(!(item is ODataCollectionValue), "!(item is ODataCollectionValue)");
Debug.Assert(!(item is ODataStreamReferenceValue), "!(item is ODataStreamReferenceValue)");
this.WritePrimitiveValue(item, expectedItemTypeReference);
}
}
}
// End the array scope which holds the items
this.JsonWriter.EndArrayScope();
if (useValueProperty)
{
this.JsonWriter.EndObjectScope();
}
this.DecreaseRecursionDepth();
}
public void WriteComplexValue(
ODataComplexValue complexValue,
IEdmTypeReference metadataTypeReference,
bool isTopLevel,
bool isOpenPropertyType,
DuplicatePropertyNamesChecker duplicatePropertyNamesChecker)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(complexValue != null, "complexValue != null");
this.IncreaseRecursionDepth();
// Start the object scope which will represent the entire complex instance;
// for top-level complex properties we already wrote the object scope (and the metadata URI when needed).
if (!isTopLevel)
{
this.JsonWriter.StartObjectScope();
}
string typeName = complexValue.TypeName;
if (isTopLevel)
{
Debug.Assert(metadataTypeReference == null, "Never expect a metadata type for top-level properties.");
if (typeName == null)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightValueSerializer_MissingTypeNameOnComplex);
}
}
else
{
// In requests, we allow the property type reference to be null if the type name is specified in the OM
if (metadataTypeReference == null && !this.WritingResponse && typeName == null && this.Model.IsUserModel())
{
throw new ODataException(ODataErrorStrings.ODataJsonLightPropertyAndValueSerializer_NoExpectedTypeOrTypeNameSpecifiedForComplexValueRequest);
}
}
// Resolve the type name to the type; if no type name is specified we will use the
// type inferred from metadata.
IEdmComplexTypeReference complexValueTypeReference = (IEdmComplexTypeReference)TypeNameOracle.ResolveAndValidateTypeNameForValue(this.Model, metadataTypeReference, complexValue, isOpenPropertyType);
Debug.Assert(
metadataTypeReference == null || complexValueTypeReference == null || metadataTypeReference.Definition.IsEquivalentTo(complexValueTypeReference.Definition),
"Complex property types must be the same as the ones from metadata (unless open).");
typeName = this.JsonLightOutputContext.TypeNameOracle.GetValueTypeNameForWriting(complexValue, metadataTypeReference, complexValueTypeReference, isOpenPropertyType);
if (typeName != null)
{
ODataJsonLightWriterUtils.WriteODataTypeInstanceAnnotation(this.JsonWriter, typeName);
}
// Write the properties of the complex value as usual. Note we do not allow complex types to contain named stream properties.
this.PropertySerializer.WriteProperties(
complexValueTypeReference == null ? null : complexValueTypeReference.ComplexDefinition(),
complexValue.Properties,
true /* isComplexValue */,
duplicatePropertyNamesChecker,
null /*projectedProperties */);
// End the object scope which represents the complex instance;
// for top-level complex properties we already wrote the end object scope.
if (!isTopLevel)
{
this.JsonWriter.EndObjectScope();
}
this.DecreaseRecursionDepth();
}