/// <summary>
/// Deserializes the given <paramref name="link"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="link">The given delta link.</param>
/// <param name="elementType">The element type.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The created object.</returns>
public virtual object ReadDeltaLink(ODataDeltaLinkWrapper link, IEdmStructuredTypeReference elementType, ODataDeserializerContext readContext)
{
if (link == null)
{
throw Error.ArgumentNull(nameof(link));
}
if (readContext == null)
{
throw Error.ArgumentNull(nameof(readContext));
}
if (readContext.IsNoClrType)
{
EdmDeltaLink edmDeltaLink = new EdmDeltaLink(elementType?.Definition as IEdmEntityType);
edmDeltaLink.Source = link.DeltaLink.Source;
edmDeltaLink.Target = link.DeltaLink.Target;
edmDeltaLink.Relationship = link.DeltaLink.Relationship;
return(edmDeltaLink);
}
else
{
// refactor how to get the CLR type
Type elementClrType = readContext.Model.GetClrType(elementType);
Type deltaLinkType = typeof(DeltaLink <>).MakeGenericType(elementClrType);
IDeltaLink deltaLink = Activator.CreateInstance(deltaLinkType) as IDeltaLink;
deltaLink.Source = link.DeltaLink.Source;
deltaLink.Target = link.DeltaLink.Target;
deltaLink.Relationship = link.DeltaLink.Relationship;
return(deltaLink);
}
}
public void ReadDeltaLink_ThrowsArgumentNull_ForInputParameters()
{
// Arrange & Act & Assert
Mock <IODataDeserializerProvider> deserializerProvider = new Mock <IODataDeserializerProvider>();
ODataDeltaResourceSetDeserializer deserializer = new ODataDeltaResourceSetDeserializer(deserializerProvider.Object);
ExceptionAssert.ThrowsArgumentNull(() => deserializer.ReadDeltaLink(null, null, null), "link");
// Arrange & Act & Assert
ODataDeltaLinkWrapper wrapper = new ODataDeltaLinkWrapper(
new ODataDeltaLink(new Uri("http://localhost"), new Uri("http://localhost"), "delete"));
ExceptionAssert.ThrowsArgumentNull(() => deserializer.ReadDeltaLink(wrapper, null, null), "readContext");
}
public void ReadDeltaLink_Returns_DeltaLink(bool typed)
{
// Arrange
Mock <IODataDeserializerProvider> deserializerProvider = new Mock <IODataDeserializerProvider>();
ODataDeltaResourceSetDeserializer deserializer = new ODataDeltaResourceSetDeserializer(deserializerProvider.Object);
Uri source = new Uri("Customers(8)", UriKind.RelativeOrAbsolute);
Uri target = new Uri("Orders(10645)", UriKind.RelativeOrAbsolute);
ODataDeltaLink link = new ODataDeltaLink(source, target, "Orders");
ODataDeltaLinkWrapper wrapper = new ODataDeltaLinkWrapper(link);
IEdmModel model = GetEdmModel();
IEdmEntityType customer = model.SchemaElements.OfType <IEdmEntityType>().First(c => c.Name == "Customer");
IEdmStructuredTypeReference elementType = new EdmEntityTypeReference(customer, true);
ODataDeserializerContext context = new ODataDeserializerContext
{
Model = model,
ResourceType = typeof(DeltaSet <>)
};
if (typed)
{
context.ResourceType = typeof(DeltaSet <>);
}
else
{
context.ResourceType = typeof(EdmChangedObjectCollection);
}
// Act
object deltaLinkObject = deserializer.ReadDeltaLink(wrapper, elementType, context);
// Assert
if (typed)
{
DeltaLink <Customer> deltaLink = Assert.IsType <DeltaLink <Customer> >(deltaLinkObject);
Assert.Equal(source, deltaLink.Source);
Assert.Equal(target, deltaLink.Target);
Assert.Equal("Orders", deltaLink.Relationship);
}
else
{
EdmDeltaLink deltaLink = Assert.IsType <EdmDeltaLink>(deltaLinkObject);
Assert.Equal(source, deltaLink.Source);
Assert.Equal(target, deltaLink.Target);
Assert.Equal("Orders", deltaLink.Relationship);
}
}
/// <summary>
/// Deserializes the given <paramref name="deltaResourceSet"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="deltaResourceSet">The delta resource set to deserialize.</param>
/// <param name="elementType">The element type.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The deserialized resource set object.</returns>
public virtual IEnumerable ReadDeltaResourceSet(ODataDeltaResourceSetWrapper deltaResourceSet, IEdmStructuredTypeReference elementType, ODataDeserializerContext readContext)
{
if (deltaResourceSet == null)
{
throw Error.ArgumentNull(nameof(deltaResourceSet));
}
if (readContext == null)
{
throw Error.ArgumentNull(nameof(readContext));
}
// Delta Items
foreach (ODataItemWrapper itemWrapper in deltaResourceSet.DeltaItems)
{
// Deleted Link
ODataDeltaDeletedLinkWrapper deletedLinkWrapper = itemWrapper as ODataDeltaDeletedLinkWrapper;
if (deletedLinkWrapper != null)
{
yield return(ReadDeltaDeletedLink(deletedLinkWrapper, elementType, readContext));
}
// Added Link
ODataDeltaLinkWrapper deltaLinkWrapper = itemWrapper as ODataDeltaLinkWrapper;
if (deltaLinkWrapper != null)
{
yield return(ReadDeltaLink(deltaLinkWrapper, elementType, readContext));
}
// Added resource, updated resource and deleted resource
ODataResourceWrapper resourceWrapper = itemWrapper as ODataResourceWrapper;
if (resourceWrapper != null)
{
yield return(ReadDeltaResource(resourceWrapper, elementType, readContext));
}
}
}
/// <summary>
/// Deserializes the given <paramref name="link"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="link">The given delta link.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The created <see cref="IEdmDeltaLink"/>.</returns>
public virtual IEdmDeltaLink ReadDeltaLink(ODataDeltaLinkWrapper link, ODataDeserializerContext readContext)
{
// TODO:
return(null);
}
public async Task ReadDeletedLinkInDeltaResourceSetWorksAsExpected()
{
// Arrange
string payload = "{" +
"\"@odata.context\":\"http://localhost/$metadata#Customers/$delta\"," +
"\"@odata.count\":5," +
"\"value\":[" +
"{" +
"\"@odata.id\":\"Customers(42)\"," +
"\"Name\":\"Sammy\"" +
"}," +
"{" +
"\"@odata.context\":\"http://localhost/$metadata#Customers/$deletedLink\"," +
"\"source\":\"Customers(39)\"," +
"\"relationship\":\"Orders\"," +
"\"target\":\"Orders(10643)\"" +
"}," +
"{" +
"\"@odata.context\":\"http://localhost/$metadata#Customers/$link\"," +
"\"source\":\"Customers(32)\"," +
"\"relationship\":\"Orders\"," +
"\"target\":\"Orders(10645)\"" +
"}," +
"{" +
"\"@odata.context\":\"http://localhost/$metadata#Orders/$entity\"," +
"\"@odata.id\":\"Orders(10643)\"," +
"\"Price\": 82" +
"}," +
"{" +
"\"@odata.context\":\"http://localhost/$metadata#Customers/$deletedEntity\"," +
"\"id\":\"Customers(21)\"," +
"\"reason\":\"deleted\"" +
"}" +
"]," +
"\"@odata.deltaLink\":\"Customers?$expand=Orders&$deltatoken=8015\"" +
"}";
IEdmEntitySet customers = Model.EntityContainer.FindEntitySet("Customers");
Assert.NotNull(customers); // Guard
// Act
Func <ODataMessageReader, Task <ODataReader> > func = mr => mr.CreateODataDeltaResourceSetReaderAsync(customers, customers.EntityType());
ODataItemWrapper item = await ReadPayloadAsync(payload, Model, func);
// Assert
Assert.NotNull(item);
// --- DeltaResourceSet
// |--- Resource (1)
// |--- Resource (2)
// |--- DeletedResource (1)
// |
// |--- DeltaDeletedLink
// |--- DeltaLink
ODataDeltaResourceSetWrapper deltaResourceSet = Assert.IsType <ODataDeltaResourceSetWrapper>(item);
// Resources
Assert.Equal(3, deltaResourceSet.ResourceBases.Count);
Assert.Collection(deltaResourceSet.ResourceBases,
e =>
{
ODataResourceWrapper resource1 = Assert.IsType <ODataResourceWrapper>(e);
Assert.Equal("Customers(42)", resource1.Resource.Id.OriginalString);
Assert.Equal("Sammy", resource1.Resource.Properties.First(p => p.Name == "Name").Value);
},
e =>
{
ODataResourceWrapper resource2 = Assert.IsType <ODataResourceWrapper>(e);
Assert.Equal("Orders(10643)", resource2.Resource.Id.OriginalString);
Assert.Equal(82, resource2.Resource.Properties.First(p => p.Name == "Price").Value);
},
e =>
{
ODataDeletedResourceWrapper deletedResource = Assert.IsType <ODataDeletedResourceWrapper>(e);
Assert.Equal("Customers(21)", deletedResource.DeletedResource.Id.OriginalString);
Assert.Equal(DeltaDeletedEntryReason.Deleted, deletedResource.DeletedResource.Reason);
});
// DeltaLinks
Assert.Equal(2, deltaResourceSet.DeltaLinks.Count);
Assert.Collection(deltaResourceSet.DeltaLinks,
e =>
{
ODataDeltaDeletedLinkWrapper deletedLinkWrapper = Assert.IsType <ODataDeltaDeletedLinkWrapper>(e);
Assert.Equal("Customers(39)", deletedLinkWrapper.DeltaDeletedLink.Source.OriginalString);
Assert.Equal("Orders(10643)", deletedLinkWrapper.DeltaDeletedLink.Target.OriginalString);
Assert.Equal("Orders", deletedLinkWrapper.DeltaDeletedLink.Relationship);
},
e =>
{
ODataDeltaLinkWrapper linkWrapper = Assert.IsType <ODataDeltaLinkWrapper>(e);
Assert.Equal("Customers(32)", linkWrapper.DeltaLink.Source.OriginalString);
Assert.Equal("Orders(10645)", linkWrapper.DeltaLink.Target.OriginalString);
Assert.Equal("Orders", linkWrapper.DeltaLink.Relationship);
});
}
/// <summary>
/// Deserializes the given <paramref name="deltaResourceSet"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="deltaResourceSet">The delta resource set to deserialize.</param>
/// <param name="elementType">The element type.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The deserialized resource set object.</returns>
public virtual IEnumerable ReadDeltaResourceSet(ODataDeltaResourceSetWrapper deltaResourceSet, IEdmStructuredTypeReference elementType, ODataDeserializerContext readContext)
{
if (deltaResourceSet == null)
{
throw Error.ArgumentNull(nameof(deltaResourceSet));
}
if (readContext == null)
{
throw Error.ArgumentNull(nameof(readContext));
}
// Delta Items
foreach (ODataItemWrapper itemWrapper in deltaResourceSet.DeltaItems)
{
// Deleted Link
ODataDeltaDeletedLinkWrapper deletedLinkWrapper = itemWrapper as ODataDeltaDeletedLinkWrapper;
if (deletedLinkWrapper != null)
{
yield return(ReadDeltaDeletedLink(deletedLinkWrapper, elementType, readContext));
}
// Added Link
ODataDeltaLinkWrapper deltaLinkWrapper = itemWrapper as ODataDeltaLinkWrapper;
if (deltaLinkWrapper != null)
{
yield return(ReadDeltaLink(deltaLinkWrapper, elementType, readContext));
}
// DeletedResource
ODataDeletedResourceWrapper deletedResourceWrapper = itemWrapper as ODataDeletedResourceWrapper;
if (deletedResourceWrapper != null)
{
// TODO: deleted resource
yield return(null);
}
// Added resource or updated resource
ODataResourceWrapper resourceWrapper = itemWrapper as ODataResourceWrapper;
if (resourceWrapper != null)
{
IEdmModel model = readContext.Model;
if (model == null)
{
throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
}
IEdmStructuredType actualType = model.FindType(resourceWrapper.Resource.TypeName) as IEdmStructuredType;
if (actualType == null)
{
throw new ODataException(Error.Format(SRResources.ResourceTypeNotInModel, resourceWrapper.Resource.TypeName));
}
IEdmTypeReference edmTypeReference = actualType.ToEdmTypeReference(true);
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(edmTypeReference);
if (deserializer == null)
{
throw new SerializationException(
Error.Format(SRResources.TypeCannotBeDeserialized, edmTypeReference.FullName()));
}
// TODO: normal resource
// yield return deserializer.ReadInline(resourceWrapper, edmTypeReference, readContext);
if (readContext.IsDeltaOfT)
{
Type elementClrType = readContext.Model.GetClrType(elementType);
Type deltaType = typeof(Deltas.Delta <>).MakeGenericType(elementClrType);
Deltas.IDelta delta = Activator.CreateInstance(deltaType) as Deltas.IDelta;
yield return(delta);
}
else
{
yield return(new EdmDeltaResourceObject(actualType as IEdmEntityType));
}
continue;
}
}
}