/// <summary>
/// Writes the given deltaDeletedEntry specified by the parameter graph as a part of an existing OData message using the given
/// messageWriter and the writeContext.
/// </summary>
/// <param name="graph">The object to be written.</param>
/// <param name="writer">The <see cref="ODataDeltaWriter" /> to be used for writing.</param>
/// <param name="writeContext">The <see cref="ODataSerializerContext"/>.</param>
public virtual async Task WriteDeletedResourceAsync(object graph, ODataWriter writer, ODataSerializerContext writeContext)
{
if (writer == null)
{
throw Error.ArgumentNull(nameof(writer));
}
EdmDeltaDeletedResourceObject edmDeltaDeletedEntity = graph as EdmDeltaDeletedResourceObject;
if (edmDeltaDeletedEntity == null)
{
throw new SerializationException(Error.Format(SRResources.CannotWriteType, GetType().Name, graph?.GetType().FullName));
}
Uri id = edmDeltaDeletedEntity.Id;
DeltaDeletedEntryReason reason = edmDeltaDeletedEntity.Reason ?? DeltaDeletedEntryReason.Deleted;
ODataDeletedResource deletedResource = new ODataDeletedResource(id, reason);
if (edmDeltaDeletedEntity.NavigationSource != null)
{
ODataResourceSerializationInfo serializationInfo = new ODataResourceSerializationInfo
{
NavigationSourceName = edmDeltaDeletedEntity.NavigationSource.Name
};
deletedResource.SetSerializationInfo(serializationInfo);
}
if (deletedResource != null)
{
await writer.WriteStartAsync(deletedResource).ConfigureAwait(false);
await writer.WriteEndAsync().ConfigureAwait(false);
}
}
public IActionResult Get()
{
EdmChangedObjectCollection changedCollection = new EdmChangedObjectCollection(DeltaCustomerType);
//Changed or Modified objects are represented as EdmDeltaResourceObjects
for (int i = 0; i < 10; i++)
{
dynamic typelessCustomer = new EdmDeltaResourceObject(DeltaCustomerType);
typelessCustomer.Id = i;
typelessCustomer.Name = string.Format("Name {0}", i);
typelessCustomer.FavoriteNumbers = Enumerable.Range(0, i).ToArray();
changedCollection.Add(typelessCustomer);
}
//Deleted objects are represented as EdmDeltaDeletedObjects
for (int i = 10; i < 15; i++)
{
dynamic typelessCustomer = new EdmDeltaDeletedResourceObject(DeltaCustomerType);
typelessCustomer.Id = new Uri(i.ToString(), UriKind.RelativeOrAbsolute);
typelessCustomer.Reason = DeltaDeletedEntryReason.Deleted;
changedCollection.Add(typelessCustomer);
}
return(Ok(changedCollection));
}
public void ReadDeltaResource_Returns_DeletedResource(bool typed)
{
// Arrange
IEdmModel model = GetEdmModel();
IEdmEntityType customer = model.SchemaElements.OfType <IEdmEntityType>().First(c => c.Name == "Customer");
IEdmStructuredTypeReference elementType = new EdmEntityTypeReference(customer, true);
Mock <IODataDeserializerProvider> deserializerProvider = new Mock <IODataDeserializerProvider>();
ODataResourceDeserializer resourceDeserializer = new ODataResourceDeserializer(deserializerProvider.Object);
Uri id = new Uri("Customers(8)", UriKind.RelativeOrAbsolute);
ODataDeletedResource customerDeleted = new ODataDeletedResource(id, DeltaDeletedEntryReason.Deleted)
{
Properties = new List <ODataProperty>
{
new ODataProperty {
Name = "FirstName", Value = "Peter"
},
new ODataProperty {
Name = "LastName", Value = "John"
}
}
};
ODataResourceWrapper resourceWrapper = new ODataResourceWrapper(customerDeleted);
ODataDeserializerContext context = new ODataDeserializerContext
{
Model = model,
};
if (typed)
{
context.ResourceType = typeof(DeltaSet <>);
}
else
{
context.ResourceType = typeof(EdmChangedObjectCollection);
}
deserializerProvider.Setup(d => d.GetEdmTypeDeserializer(It.IsAny <IEdmTypeReference>(), false)).Returns(resourceDeserializer);
ODataDeltaResourceSetDeserializer deserializer = new ODataDeltaResourceSetDeserializer(deserializerProvider.Object);
// Act
object result = deserializer.ReadDeltaResource(resourceWrapper, elementType, context);
// Assert
Action <Delta> testPropertyAction = d =>
{
d.TryGetPropertyValue("FirstName", out object firstName);
Assert.Equal("Peter", firstName);
d.TryGetPropertyValue("LastName", out object lastName);
Assert.Equal("John", lastName);
};
if (typed)
{
DeltaDeletedResource <Customer> deltaDeletedResource = Assert.IsType <DeltaDeletedResource <Customer> >(result);
Assert.Equal(id, deltaDeletedResource.Id);
Assert.Equal(DeltaDeletedEntryReason.Deleted, deltaDeletedResource.Reason);
testPropertyAction(deltaDeletedResource);
}
else
{
EdmDeltaDeletedResourceObject deltaDeletedResource = Assert.IsType <EdmDeltaDeletedResourceObject>(result);
Assert.Equal(id, deltaDeletedResource.Id);
Assert.Equal(DeltaDeletedEntryReason.Deleted, deltaDeletedResource.Reason);
testPropertyAction(deltaDeletedResource);
}
}