/// <inheritdoc />
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw Error.ArgumentNull("messageWriter");
}
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
if (graph == null)
{
throw new SerializationException(Error.Format(SRResources.CannotSerializerNull, DeltaFeed));
}
IEdmEntitySetBase entitySet = writeContext.NavigationSource as IEdmEntitySetBase;
if (entitySet == null)
{
throw new SerializationException(SRResources.EntitySetMissingDuringSerialization);
}
IEdmTypeReference feedType = writeContext.GetEdmType(graph, type);
Contract.Assert(feedType != null);
IEdmEntityTypeReference entityType = GetEntityType(feedType);
ODataDeltaWriter writer = messageWriter.CreateODataDeltaWriter(entitySet, entityType.EntityDefinition());
WriteDeltaFeedInline(graph, feedType, writer, writeContext);
}
public void GetEdmType_ThrowsInvalidOperation_IfEdmObjectGetEdmTypeReturnsNull()
{
// Arrange (this code path does not use ODataSerializerContext fields or properties)
var context = new ODataSerializerContext();
NullEdmType edmObject = new NullEdmType();
// Act & Assert
ExceptionAssert.Throws <InvalidOperationException>(() => context.GetEdmType(edmObject, null),
exceptionMessage: "The EDM type of the object of type 'Microsoft.Test.AspNet.OData.Formatter.Serialization.ODataSerializerContextTest+NullEdmType'" +
" is null. The EDM type of an IEdmObject cannot be null.");
}
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
{
// We don't need to check if v3 because output formatter does that for us
IEdmTypeReference edmType = writeContext.GetEdmType(graph, type);
if (!edmType.IsStructured())
{
throw new ArgumentException("type");
}
messageWriter.PreemptivelyTranslateResponseStream(
edmType,
(writer) => base.WriteObject(graph, type, writer, writeContext));
}
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw new ArgumentNullException(nameof(messageWriter));
}
if (writeContext == null)
{
throw new ArgumentNullException(nameof(writeContext));
}
IEdmTypeReference resourceSetType = writeContext.GetEdmType(graph, type);
messageWriter.PreemptivelyTranslateResponseStream(
resourceSetType,
(writer) => base.WriteObject(graph, type, writer, writeContext));
}
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw new ArgumentNullException(nameof(messageWriter));
}
if (writeContext == null)
{
throw new ArgumentNullException(nameof(writeContext));
}
IEdmTypeReference collectionType = writeContext.GetEdmType(graph, type);
// Translate types in response stream according to expected collection type
messageWriter.PreemptivelyTranslateResponseStream(
collectionType,
(writer) => base.WriteObject(graph, type, writer, writeContext));
}
/// <summary>
/// Creates an <see cref="ODataComplexValue"/> for the object represented by <paramref name="graph"/>.
/// </summary>
/// <param name="graph">The value of the <see cref="ODataComplexValue"/> to be created.</param>
/// <param name="complexType">The EDM complex type of the object.</param>
/// <param name="writeContext">The serializer context.</param>
/// <returns>The created <see cref="ODataComplexValue"/>.</returns>
public virtual ODataComplexValue CreateODataComplexValue(object graph, IEdmComplexTypeReference complexType,
ODataSerializerContext writeContext)
{
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
if (graph == null || graph is NullEdmComplexObject)
{
return null;
}
IEdmComplexObject complexObject = graph as IEdmComplexObject ?? new TypedEdmComplexObject(graph, complexType, writeContext.Model);
List<ODataProperty> propertyCollection = new List<ODataProperty>();
foreach (IEdmProperty property in complexType.ComplexDefinition().Properties())
{
IEdmTypeReference propertyType = property.Type;
ODataEdmTypeSerializer propertySerializer = SerializerProvider.GetEdmTypeSerializer(propertyType);
if (propertySerializer == null)
{
throw Error.NotSupported(SRResources.TypeCannotBeSerialized, propertyType.FullName(), typeof(ODataOutputFormatter).Name);
}
object propertyValue;
if (complexObject.TryGetPropertyValue(property.Name, out propertyValue))
{
if (propertyType != null && propertyType.IsComplex())
{
IEdmTypeReference actualType = writeContext.GetEdmType(propertyValue, propertyValue.GetType());
if (actualType != null && propertyType != actualType)
{
propertyType = actualType;
}
}
propertyCollection.Add(
propertySerializer.CreateProperty(propertyValue, propertyType, property.Name, writeContext));
}
}
// Try to add the dynamic properties if the complex type is open.
if (complexType.ComplexDefinition().IsOpen)
{
List<ODataProperty> dynamicProperties =
AppendDynamicProperties(complexObject, complexType, writeContext, propertyCollection, new string[0]);
if (dynamicProperties != null)
{
propertyCollection.AddRange(dynamicProperties);
}
}
string typeName = complexType.FullName();
ODataComplexValue value = new ODataComplexValue()
{
Properties = propertyCollection,
TypeName = typeName
};
AddTypeNameAnnotationAsNeeded(value, writeContext.MetadataLevel);
return value;
}
/// <inheritdoc/>
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter,
ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw Error.ArgumentNull("messageWriter");
}
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
if (writeContext.RootElementName == null)
{
throw Error.Argument("writeContext", SRResources.RootElementNameMissing, typeof(ODataSerializerContext).Name);
}
IEdmTypeReference edmType = writeContext.GetEdmType(graph, type);
Contract.Assert(edmType != null);
ODataProperty property = CreateProperty(graph, edmType, writeContext.RootElementName, writeContext);
messageWriter.WriteProperty(property);
}
/// <summary>
/// Creates an <see cref="ODataCollectionValue"/> for the enumerable represented by <paramref name="enumerable"/>.
/// </summary>
/// <param name="enumerable">The value of the collection to be created.</param>
/// <param name="elementType">The element EDM type of the collection.</param>
/// <param name="writeContext">The serializer context to be used while creating the collection.</param>
/// <returns>The created <see cref="ODataCollectionValue"/>.</returns>
public virtual ODataCollectionValue CreateODataCollectionValue(IEnumerable enumerable, IEdmTypeReference elementType,
ODataSerializerContext writeContext)
{
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
if (elementType == null)
{
throw Error.ArgumentNull("elementType");
}
var valueCollection = new List<object>();
if (enumerable != null)
{
ODataEdmTypeSerializer itemSerializer = null;
foreach (object item in enumerable)
{
if (item == null)
{
if (elementType.IsNullable)
{
valueCollection.Add(null);
continue;
}
throw new SerializationException(SRResources.NullElementInCollection);
}
IEdmTypeReference actualType = writeContext.GetEdmType(item, item.GetType());
Contract.Assert(actualType != null);
itemSerializer = itemSerializer ?? SerializerProvider.GetEdmTypeSerializer(actualType);
if (itemSerializer == null)
{
throw new SerializationException(
Error.Format(SRResources.TypeCannotBeSerialized, actualType.FullName(),
typeof(ODataOutputFormatter).Name));
}
// ODataCollectionWriter expects the individual elements in the collection to be the underlying
// values and not ODataValues.
valueCollection.Add(
itemSerializer.CreateODataValue(item, actualType, writeContext).GetInnerValue());
}
}
// Ideally, we'd like to do this:
// string typeName = _edmCollectionType.FullName();
// But ODataLib currently doesn't support .FullName() for collections. As a workaround, we construct the
// collection type name the hard way.
string typeName = "Collection(" + elementType.FullName() + ")";
// ODataCollectionValue is only a V3 property, arrays inside Complex Types or Entity types are only supported in V3
// if a V1 or V2 Client requests a type that has a collection within it ODataLib will throw.
ODataCollectionValue value = new ODataCollectionValue
{
Items = valueCollection,
TypeName = typeName
};
AddTypeNameAnnotationAsNeeded(value, writeContext.MetadataLevel);
return value;
}
/// <inheritdoc/>
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter,
ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw Error.ArgumentNull("messageWriter");
}
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
IEdmTypeReference collectionType = writeContext.GetEdmType(graph, type);
Contract.Assert(collectionType != null);
IEdmTypeReference elementType = GetElementType(collectionType);
ODataCollectionWriter writer = messageWriter.CreateODataCollectionWriter(elementType);
WriteCollection(writer, graph, collectionType.AsCollection(), writeContext);
}
private IEdmEntityTypeReference GetEntityType(object graph, ODataSerializerContext writeContext)
{
Contract.Assert(graph != null);
IEdmTypeReference edmType = writeContext.GetEdmType(graph, graph.GetType());
Contract.Assert(edmType != null);
if (!edmType.IsEntity())
{
throw new SerializationException(
Error.Format(SRResources.CannotWriteType, GetType().Name, edmType.FullName()));
}
return edmType.AsEntity();
}