public void ReadEntry_SetsExpectedAndActualEdmType_OnCreatedEdmObject_TypelessMode()
{
// Arrange
CustomersModelWithInheritance model = new CustomersModelWithInheritance();
IEdmEntityTypeReference customerType = EdmLibHelpers.ToEdmTypeReference(model.Customer, isNullable: false).AsEntity();
ODataDeserializerContext readContext = new ODataDeserializerContext {
Model = model.Model, ResourceType = typeof(IEdmObject)
};
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry
{
TypeName = model.SpecialCustomer.FullName(),
Properties = new ODataProperty[0]
});
ODataEntityDeserializer deserializer = new ODataEntityDeserializer(_deserializerProvider);
// Act
var result = deserializer.ReadEntry(entry, customerType, readContext);
// Assert
EdmEntityObject resource = Assert.IsType <EdmEntityObject>(result);
Assert.Equal(model.SpecialCustomer, resource.ActualEdmType);
Assert.Equal(model.Customer, resource.ExpectedEdmType);
}
/// <inheritdoc />
public override object Read(ODataMessageReader messageReader, ODataDeserializerContext readContext)
{
if (messageReader == null)
{
throw Error.ArgumentNull("messageReader");
}
if (readContext == null)
{
throw Error.ArgumentNull("readContext");
}
if (readContext.Path == null)
{
throw Error.Argument("readContext", SRResources.ODataPathMissing);
}
IEdmEntitySet entitySet = GetEntitySet(readContext.Path);
if (entitySet == null)
{
throw new SerializationException(SRResources.EntitySetMissingDuringDeserialization);
}
ODataReader odataReader = messageReader.CreateODataEntryReader(entitySet, EntityType.EntityDefinition());
ODataEntryWithNavigationLinks topLevelEntry = ReadEntryOrFeed(odataReader) as ODataEntryWithNavigationLinks;
Contract.Assert(topLevelEntry != null);
return(ReadInline(topLevelEntry, readContext));
}
/// <summary>
/// Deserializes the given <paramref name="entryWrapper"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="entryWrapper">The OData entry to deserialize.</param>
/// <param name="entityType">The entity type of the entry to deserialize.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The deserialized entity.</returns>
public virtual object ReadEntry(ODataEntryWithNavigationLinks entryWrapper, IEdmEntityTypeReference entityType,
ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
if (readContext == null)
{
throw Error.ArgumentNull("readContext");
}
if (!String.IsNullOrEmpty(entryWrapper.Entry.TypeName) && entityType.FullName() != entryWrapper.Entry.TypeName)
{
// received a derived type in a base type deserializer. delegate it to the appropriate derived type deserializer.
IEdmModel model = readContext.Model;
if (model == null)
{
throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
}
IEdmEntityType actualType = model.FindType(entryWrapper.Entry.TypeName) as IEdmEntityType;
if (actualType == null)
{
throw new ODataException(Error.Format(SRResources.EntityTypeNotInModel, entryWrapper.Entry.TypeName));
}
if (actualType.IsAbstract)
{
string message = Error.Format(SRResources.CannotInstantiateAbstractEntityType, entryWrapper.Entry.TypeName);
throw new ODataException(message);
}
IEdmTypeReference actualEntityType = new EdmEntityTypeReference(actualType, isNullable: false);
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(actualEntityType);
if (deserializer == null)
{
throw new SerializationException(
Error.Format(SRResources.TypeCannotBeDeserialized, actualEntityType.FullName(), typeof(ODataMediaTypeFormatter).Name));
}
object resource = deserializer.ReadInline(entryWrapper, actualEntityType, readContext);
EdmStructuredObject structuredObject = resource as EdmStructuredObject;
if (structuredObject != null)
{
structuredObject.ExpectedEdmType = entityType.EntityDefinition();
}
return(resource);
}
else
{
object resource = CreateEntityResource(entityType, readContext);
ApplyEntityProperties(resource, entryWrapper, entityType, readContext);
return(resource);
}
}
/// <inheritdoc />
public sealed override object ReadInline(object item, IEdmTypeReference edmType, ODataDeserializerContext readContext)
{
if (item == null)
{
throw Error.ArgumentNull("item");
}
if (edmType == null)
{
throw Error.ArgumentNull("edmType");
}
if (!edmType.IsEntity())
{
throw Error.Argument("edmType", SRResources.ArgumentMustBeOfType, EdmTypeKind.Entity);
}
ODataEntryWithNavigationLinks entryWrapper = item as ODataEntryWithNavigationLinks;
if (entryWrapper == null)
{
throw Error.Argument("item", SRResources.ArgumentMustBeOfType, typeof(ODataEntry).Name);
}
// Recursion guard to avoid stack overflows
RuntimeHelpers.EnsureSufficientExecutionStack();
return(ReadEntry(entryWrapper, edmType.AsEntity(), readContext));
}
public void ReadEntry_ThrowsArgumentNull_ReadContext()
{
var deserializer = new ODataEntityDeserializer(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
Assert.ThrowsArgumentNull(
() => deserializer.ReadEntry(entry, entityType: _productEdmType, readContext: null),
"readContext");
}
public void ReadEntry_ThrowsODataException_EntityTypeNotInModel()
{
var deserializer = new ODataEntityDeserializer(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
TypeName = "MissingType"
});
Assert.Throws <ODataException>(
() => deserializer.ReadEntry(entry, _productEdmType, _readContext),
"Cannot find the entity type 'MissingType' in the model.");
}
/// <summary>
/// Deserializes the structural properties from <paramref name="entryWrapper"/> into <paramref name="entityResource"/>.
/// </summary>
/// <param name="entityResource">The object into which the structural properties should be read.</param>
/// <param name="entryWrapper">The entry object containing the structural properties.</param>
/// <param name="readContext">The deserializer context.</param>
public virtual void ApplyStructuralProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper, ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
foreach (ODataProperty property in entryWrapper.Entry.Properties)
{
ApplyStructuralProperty(entityResource, property, readContext);
}
}
public void ReadEntry_ThrowsArgument_ModelMissingFromReadContext()
{
var deserializer = new ODataEntityDeserializer(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
TypeName = _supplierEdmType.FullName()
});
Assert.ThrowsArgument(
() => deserializer.ReadEntry(entry, _productEdmType, new ODataDeserializerContext()),
"readContext",
"The EDM model is missing on the read context. The model is required on the read context to deserialize the payload.");
}
/// <summary>
/// Deserializes the navigation properties from <paramref name="entryWrapper"/> into <paramref name="entityResource"/>.
/// </summary>
/// <param name="entityResource">The object into which the navigation properties should be read.</param>
/// <param name="entryWrapper">The entry object containing the navigation properties.</param>
/// <param name="readContext">The deserializer context.</param>
public virtual void ApplyNavigationProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper, ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
foreach (ODataNavigationLinkWithItems navigationLink in entryWrapper.NavigationLinks)
{
ApplyNavigationProperty(entityResource, navigationLink, readContext);
}
}
public void ReadEntry_ThrowsSerializationException_TypeCannotBeDeserialized()
{
Mock <ODataDeserializerProvider> deserializerProvider = new Mock <ODataDeserializerProvider>();
deserializerProvider.Setup(d => d.GetEdmTypeDeserializer(It.IsAny <IEdmTypeReference>())).Returns <ODataEdmTypeDeserializer>(null);
var deserializer = new ODataEntityDeserializer(deserializerProvider.Object);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
TypeName = _supplierEdmType.FullName()
});
Assert.Throws <SerializationException>(
() => deserializer.ReadEntry(entry, _productEdmType, _readContext),
"'ODataDemo.Supplier' cannot be deserialized using the ODataMediaTypeFormatter.");
}
public void ReadInline_Calls_ReadEntry()
{
// Arrange
var deserializer = new Mock <ODataEntityDeserializer>(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
ODataDeserializerContext readContext = new ODataDeserializerContext();
deserializer.CallBase = true;
deserializer.Setup(d => d.ReadEntry(entry, _productEdmType, readContext)).Returns(42).Verifiable();
// Act
var result = deserializer.Object.ReadInline(entry, _productEdmType, readContext);
// Assert
deserializer.Verify();
Assert.Equal(42, result);
}
public void ReadEntry_ThrowsODataException_CannotInstantiateAbstractEntityType()
{
ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
builder.Entity <BaseType>().Abstract();
IEdmModel model = builder.GetEdmModel();
var deserializer = new ODataEntityDeserializer(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
TypeName = "System.Web.Http.OData.Formatter.Deserialization.BaseType"
});
Assert.Throws <ODataException>(
() => deserializer.ReadEntry(entry, _productEdmType, new ODataDeserializerContext {
Model = model
}),
"An instance of the abstract entity type 'System.Web.Http.OData.Formatter.Deserialization.BaseType' was found. Abstract entity types cannot be instantiated.");
}
/// <summary>
/// Deserializes the navigation property from <paramref name="navigationLinkWrapper"/> into <paramref name="entityResource"/>.
/// </summary>
/// <param name="entityResource">The object into which the navigation property should be read.</param>
/// <param name="navigationLinkWrapper">The navigation link.</param>
/// <param name="entityType">The entity type of the entity resource.</param>
/// <param name="readContext">The deserializer context.</param>
public virtual void ApplyNavigationProperty(object entityResource, ODataNavigationLinkWithItems navigationLinkWrapper,
IEdmEntityTypeReference entityType, ODataDeserializerContext readContext)
{
if (navigationLinkWrapper == null)
{
throw Error.ArgumentNull("navigationLinkWrapper");
}
if (entityResource == null)
{
throw Error.ArgumentNull("entityResource");
}
IEdmNavigationProperty navigationProperty = entityType.FindProperty(navigationLinkWrapper.NavigationLink.Name) as IEdmNavigationProperty;
if (navigationProperty == null)
{
throw new ODataException(
Error.Format(SRResources.NavigationPropertyNotfound, navigationLinkWrapper.NavigationLink.Name, entityType.FullName()));
}
foreach (ODataItemBase childItem in navigationLinkWrapper.NestedItems)
{
ODataEntityReferenceLinkBase entityReferenceLink = childItem as ODataEntityReferenceLinkBase;
if (entityReferenceLink != null)
{
// ignore links.
continue;
}
ODataFeedWithEntries feed = childItem as ODataFeedWithEntries;
if (feed != null)
{
ApplyFeedInNavigationProperty(navigationProperty, entityResource, feed, readContext);
continue;
}
// It must be entry by now.
ODataEntryWithNavigationLinks entry = (ODataEntryWithNavigationLinks)childItem;
if (entry != null)
{
ApplyEntryInNavigationProperty(navigationProperty, entityResource, entry, readContext);
}
}
}
public void ReadEntry_Calls_ApplyNaviagationProperties()
{
// Arrange
Mock <ODataEntityDeserializer> deserializer = new Mock <ODataEntityDeserializer>(_deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
Properties = Enumerable.Empty <ODataProperty>()
});
deserializer.CallBase = true;
deserializer.Setup(d => d.CreateEntityResource(_productEdmType, _readContext)).Returns(42);
deserializer.Setup(d => d.ApplyNavigationProperties(42, entry, _productEdmType, _readContext)).Verifiable();
// Act
deserializer.Object.ReadEntry(entry, _productEdmType, _readContext);
// Assert
deserializer.Verify();
}
/// <inheritdoc />
public sealed override object ReadInline(object item, ODataDeserializerContext readContext)
{
if (item == null)
{
throw Error.ArgumentNull("item");
}
ODataEntryWithNavigationLinks entryWrapper = item as ODataEntryWithNavigationLinks;
if (entryWrapper == null)
{
throw Error.Argument("item", SRResources.ArgumentMustBeOfType, typeof(ODataEntry).Name);
}
// Recursion guard to avoid stack overflows
EnsureStackHelper.EnsureStack();
return(ReadEntry(entryWrapper, readContext));
}
public void ReadEntry_DispatchesToRightDeserializer_IfEntityTypeNameIsDifferent()
{
// Arrange
Mock <ODataEdmTypeDeserializer> supplierDeserializer = new Mock <ODataEdmTypeDeserializer>(_supplierEdmType, ODataPayloadKind.Entry);
Mock <ODataDeserializerProvider> deserializerProvider = new Mock <ODataDeserializerProvider>();
var deserializer = new ODataEntityDeserializer(_productEdmType, deserializerProvider.Object);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
TypeName = _supplierEdmType.FullName()
});
deserializerProvider.Setup(d => d.GetEdmTypeDeserializer(It.IsAny <IEdmTypeReference>())).Returns(supplierDeserializer.Object);
supplierDeserializer.Setup(d => d.ReadInline(entry, _readContext)).Returns(42).Verifiable();
// Act
object result = deserializer.ReadEntry(entry, _readContext);
// Assert
Assert.Equal(42, result);
supplierDeserializer.Verify();
}
public void ApplyStructuralProperties_Calls_ApplyStructuralPropertyOnEachPropertyInEntry()
{
// Arrange
var deserializer = new Mock <ODataEntityDeserializer>(_deserializerProvider);
ODataProperty[] properties = new[] { new ODataProperty(), new ODataProperty() };
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry {
Properties = properties
});
deserializer.CallBase = true;
deserializer.Setup(d => d.ApplyStructuralProperty(42, properties[0], _productEdmType, _readContext)).Verifiable();
deserializer.Setup(d => d.ApplyStructuralProperty(42, properties[1], _productEdmType, _readContext)).Verifiable();
// Act
deserializer.Object.ApplyStructuralProperties(42, entry, _productEdmType, _readContext);
// Assert
deserializer.Verify();
}
public void ApplyNavigationProperties_Calls_ApplyNavigationPropertyForEachNavigationLink()
{
// Arrange
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
entry.NavigationLinks.Add(new ODataNavigationLinkWithItems(new ODataNavigationLink()));
entry.NavigationLinks.Add(new ODataNavigationLinkWithItems(new ODataNavigationLink()));
Mock <ODataEntityDeserializer> deserializer = new Mock <ODataEntityDeserializer>(_deserializerProvider);
deserializer.CallBase = true;
deserializer.Setup(d => d.ApplyNavigationProperty(42, entry.NavigationLinks[0], _productEdmType, _readContext)).Verifiable();
deserializer.Setup(d => d.ApplyNavigationProperty(42, entry.NavigationLinks[1], _productEdmType, _readContext)).Verifiable();
// Act
deserializer.Object.ApplyNavigationProperties(42, entry, _productEdmType, _readContext);
// Assert
deserializer.Verify();
}
private void ApplyEntryInNavigationProperty(IEdmNavigationProperty navigationProperty, object entityResource,
ODataEntryWithNavigationLinks entry, ODataDeserializerContext readContext)
{
Contract.Assert(navigationProperty != null && navigationProperty.PropertyKind == EdmPropertyKind.Navigation, "navigationProperty != null && navigationProperty.TypeKind == ResourceTypeKind.EntityType");
Contract.Assert(entityResource != null, "entityResource != null");
if (readContext.IsDeltaOfT)
{
string message = Error.Format(SRResources.CannotPatchNavigationProperties, navigationProperty.Name, navigationProperty.DeclaringEntityType().FullName());
throw new ODataException(message);
}
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(navigationProperty.Type);
if (deserializer == null)
{
throw new SerializationException(Error.Format(SRResources.TypeCannotBeDeserialized, navigationProperty.Type.FullName(), typeof(ODataMediaTypeFormatter)));
}
object value = deserializer.ReadInline(entry, navigationProperty.Type, readContext);
DeserializationHelpers.SetProperty(entityResource, navigationProperty.Name, value);
}
private void ApplyEntryInNavigationProperty(IEdmNavigationProperty navigationProperty, object entityResource,
ODataEntryWithNavigationLinks entry, ODataDeserializerContext readContext)
{
Contract.Assert(navigationProperty != null && navigationProperty.PropertyKind == EdmPropertyKind.Navigation, "navigationProperty != null && navigationProperty.TypeKind == ResourceTypeKind.EntityType");
Contract.Assert(entityResource != null, "entityResource != null");
if (readContext.IsDeltaOfT)
{
string message = Error.Format(SRResources.CannotPatchNavigationProperties, navigationProperty.Name, navigationProperty.DeclaringEntityType().FullName());
throw new ODataException(message);
}
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(navigationProperty.Type);
if (deserializer == null)
{
throw new SerializationException(Error.Format(SRResources.TypeCannotBeDeserialized, navigationProperty.Type.FullName(), typeof(ODataMediaTypeFormatter)));
}
object value = deserializer.ReadInline(entry, navigationProperty.Type, readContext);
DeserializationHelpers.SetProperty(entityResource, navigationProperty.Name, value);
}
private void ApplyEntityProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper,
IEdmEntityTypeReference entityType, ODataDeserializerContext readContext)
{
ApplyStructuralProperties(entityResource, entryWrapper, entityType, readContext);
ApplyNavigationProperties(entityResource, entryWrapper, entityType, readContext);
}
/// <summary>
/// Reads an ODataFeed or an ODataItem from the reader.
/// </summary>
/// <param name="reader">The OData reader to read from.</param>
/// <returns>The read feed or entry.</returns>
public static ODataItemBase ReadEntryOrFeed(ODataReader reader)
{
if (reader == null)
{
throw Error.ArgumentNull("odataReader");
}
ODataItemBase topLevelItem = null;
Stack<ODataItemBase> itemsStack = new Stack<ODataItemBase>();
while (reader.Read())
{
switch (reader.State)
{
case ODataReaderState.EntryStart:
ODataEntry entry = (ODataEntry)reader.Item;
ODataEntryWithNavigationLinks entryWrapper = null;
if (entry != null)
{
entryWrapper = new ODataEntryWithNavigationLinks(entry);
}
if (itemsStack.Count == 0)
{
Contract.Assert(entry != null, "The top-level entry can never be null.");
topLevelItem = entryWrapper;
}
else
{
ODataItemBase parentItem = itemsStack.Peek();
ODataFeedWithEntries parentFeed = parentItem as ODataFeedWithEntries;
if (parentFeed != null)
{
parentFeed.Entries.Add(entryWrapper);
}
else
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)parentItem;
Contract.Assert(parentNavigationLink.NavigationLink.IsCollection == false, "Only singleton navigation properties can contain entry as their child.");
Contract.Assert(parentNavigationLink.NestedItems.Count == 0, "Each navigation property can contain only one entry as its direct child.");
parentNavigationLink.NestedItems.Add(entryWrapper);
}
}
itemsStack.Push(entryWrapper);
break;
case ODataReaderState.EntryEnd:
Contract.Assert(itemsStack.Count > 0 && (reader.Item == null || itemsStack.Peek().Item == reader.Item), "The entry which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.NavigationLinkStart:
ODataNavigationLink navigationLink = (ODataNavigationLink)reader.Item;
Contract.Assert(navigationLink != null, "Navigation link should never be null.");
ODataNavigationLinkWithItems navigationLinkWrapper = new ODataNavigationLinkWithItems(navigationLink);
Contract.Assert(itemsStack.Count > 0, "Navigation link can't appear as top-level item.");
{
ODataEntryWithNavigationLinks parentEntry = (ODataEntryWithNavigationLinks)itemsStack.Peek();
parentEntry.NavigationLinks.Add(navigationLinkWrapper);
}
itemsStack.Push(navigationLinkWrapper);
break;
case ODataReaderState.NavigationLinkEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The navigation link which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.FeedStart:
ODataFeed feed = (ODataFeed)reader.Item;
Contract.Assert(feed != null, "Feed should never be null.");
ODataFeedWithEntries feedWrapper = new ODataFeedWithEntries(feed);
if (itemsStack.Count > 0)
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)itemsStack.Peek();
Contract.Assert(parentNavigationLink != null, "this has to be an inner feed. inner feeds always have a navigation link.");
Contract.Assert(parentNavigationLink.NavigationLink.IsCollection == true, "Only collection navigation properties can contain feed as their child.");
parentNavigationLink.NestedItems.Add(feedWrapper);
}
else
{
topLevelItem = feedWrapper;
}
itemsStack.Push(feedWrapper);
break;
case ODataReaderState.FeedEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The feed which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.EntityReferenceLink:
ODataEntityReferenceLink entityReferenceLink = (ODataEntityReferenceLink)reader.Item;
Contract.Assert(entityReferenceLink != null, "Entity reference link should never be null.");
ODataEntityReferenceLinkBase entityReferenceLinkWrapper = new ODataEntityReferenceLinkBase(entityReferenceLink);
Contract.Assert(itemsStack.Count > 0, "Entity reference link should never be reported as top-level item.");
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)itemsStack.Peek();
parentNavigationLink.NestedItems.Add(entityReferenceLinkWrapper);
}
break;
default:
Contract.Assert(false, "We should never get here, it means the ODataReader reported a wrong state.");
break;
}
}
Contract.Assert(reader.State == ODataReaderState.Completed, "We should have consumed all of the input by now.");
Contract.Assert(topLevelItem != null, "A top level entry or feed should have been read by now.");
return topLevelItem;
}
/// <summary>
/// Deserializes the structural properties from <paramref name="entryWrapper"/> into <paramref name="entityResource"/>.
/// </summary>
/// <param name="entityResource">The object into which the structural properties should be read.</param>
/// <param name="entryWrapper">The entry object containing the structural properties.</param>
/// <param name="entityType">The entity type of the entity resource.</param>
/// <param name="readContext">The deserializer context.</param>
public virtual void ApplyStructuralProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper,
IEdmEntityTypeReference entityType, ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
foreach (ODataProperty property in entryWrapper.Entry.Properties)
{
ApplyStructuralProperty(entityResource, property, entityType, readContext);
}
}
/// <summary>
/// Deserializes the navigation properties from <paramref name="entryWrapper"/> into <paramref name="entityResource"/>.
/// </summary>
/// <param name="entityResource">The object into which the navigation properties should be read.</param>
/// <param name="entryWrapper">The entry object containing the navigation properties.</param>
/// <param name="entityType">The entity type of the entity resource.</param>
/// <param name="readContext">The deserializer context.</param>
public virtual void ApplyNavigationProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper,
IEdmEntityTypeReference entityType, ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
foreach (ODataNavigationLinkWithItems navigationLink in entryWrapper.NavigationLinks)
{
ApplyNavigationProperty(entityResource, navigationLink, entityType, readContext);
}
}
public void ReadEntry_ThrowsArgument_ModelMissingFromReadContext()
{
var deserializer = new ODataEntityDeserializer(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { TypeName = _supplierEdmType.FullName() });
Assert.ThrowsArgument(
() => deserializer.ReadEntry(entry, new ODataDeserializerContext()),
"readContext",
"The EDM model is missing on the read context. The model is required on the read context to deserialize the payload.");
}
/// <summary>
/// Reads an ODataFeed or an ODataItem from the reader.
/// </summary>
/// <param name="reader">The OData reader to read from.</param>
/// <returns>The read feed or entry.</returns>
public static ODataItemBase ReadEntryOrFeed(ODataReader reader)
{
if (reader == null)
{
throw Error.ArgumentNull("odataReader");
}
ODataItemBase topLevelItem = null;
Stack <ODataItemBase> itemsStack = new Stack <ODataItemBase>();
while (reader.Read())
{
switch (reader.State)
{
case ODataReaderState.EntryStart:
ODataEntry entry = (ODataEntry)reader.Item;
ODataEntryWithNavigationLinks entryWrapper = null;
if (entry != null)
{
entryWrapper = new ODataEntryWithNavigationLinks(entry);
}
if (itemsStack.Count == 0)
{
Contract.Assert(entry != null, "The top-level entry can never be null.");
topLevelItem = entryWrapper;
}
else
{
ODataItemBase parentItem = itemsStack.Peek();
ODataFeedWithEntries parentFeed = parentItem as ODataFeedWithEntries;
if (parentFeed != null)
{
parentFeed.Entries.Add(entryWrapper);
}
else
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)parentItem;
Contract.Assert(parentNavigationLink.NavigationLink.IsCollection == false, "Only singleton navigation properties can contain entry as their child.");
Contract.Assert(parentNavigationLink.NestedItems.Count == 0, "Each navigation property can contain only one entry as its direct child.");
parentNavigationLink.NestedItems.Add(entryWrapper);
}
}
itemsStack.Push(entryWrapper);
break;
case ODataReaderState.EntryEnd:
Contract.Assert(itemsStack.Count > 0 && (reader.Item == null || itemsStack.Peek().Item == reader.Item), "The entry which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.NavigationLinkStart:
ODataNavigationLink navigationLink = (ODataNavigationLink)reader.Item;
Contract.Assert(navigationLink != null, "Navigation link should never be null.");
ODataNavigationLinkWithItems navigationLinkWrapper = new ODataNavigationLinkWithItems(navigationLink);
Contract.Assert(itemsStack.Count > 0, "Navigation link can't appear as top-level item.");
{
ODataEntryWithNavigationLinks parentEntry = (ODataEntryWithNavigationLinks)itemsStack.Peek();
parentEntry.NavigationLinks.Add(navigationLinkWrapper);
}
itemsStack.Push(navigationLinkWrapper);
break;
case ODataReaderState.NavigationLinkEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The navigation link which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.FeedStart:
ODataFeed feed = (ODataFeed)reader.Item;
Contract.Assert(feed != null, "Feed should never be null.");
ODataFeedWithEntries feedWrapper = new ODataFeedWithEntries(feed);
if (itemsStack.Count > 0)
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)itemsStack.Peek();
Contract.Assert(parentNavigationLink != null, "this has to be an inner feed. inner feeds always have a navigation link.");
Contract.Assert(parentNavigationLink.NavigationLink.IsCollection == true, "Only collection navigation properties can contain feed as their child.");
parentNavigationLink.NestedItems.Add(feedWrapper);
}
else
{
topLevelItem = feedWrapper;
}
itemsStack.Push(feedWrapper);
break;
case ODataReaderState.FeedEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The feed which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.EntityReferenceLink:
ODataEntityReferenceLink entityReferenceLink = (ODataEntityReferenceLink)reader.Item;
Contract.Assert(entityReferenceLink != null, "Entity reference link should never be null.");
ODataEntityReferenceLinkBase entityReferenceLinkWrapper = new ODataEntityReferenceLinkBase(entityReferenceLink);
Contract.Assert(itemsStack.Count > 0, "Entity reference link should never be reported as top-level item.");
{
ODataNavigationLinkWithItems parentNavigationLink = (ODataNavigationLinkWithItems)itemsStack.Peek();
parentNavigationLink.NestedItems.Add(entityReferenceLinkWrapper);
}
break;
default:
Contract.Assert(false, "We should never get here, it means the ODataReader reported a wrong state.");
break;
}
}
Contract.Assert(reader.State == ODataReaderState.Completed, "We should have consumed all of the input by now.");
Contract.Assert(topLevelItem != null, "A top level entry or feed should have been read by now.");
return(topLevelItem);
}
public void ReadEntry_Calls_ApplyNaviagationProperties()
{
// Arrange
Mock<ODataEntityDeserializer> deserializer = new Mock<ODataEntityDeserializer>(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { Properties = Enumerable.Empty<ODataProperty>() });
deserializer.CallBase = true;
deserializer.Setup(d => d.CreateEntityResource(_readContext)).Returns(42);
deserializer.Setup(d => d.ApplyNavigationProperties(42, entry, _readContext)).Verifiable();
// Act
deserializer.Object.ReadEntry(entry, _readContext);
// Assert
deserializer.Verify();
}
public void ReadEntry_ThrowsSerializationException_TypeCannotBeDeserialized()
{
Mock<ODataDeserializerProvider> deserializerProvider = new Mock<ODataDeserializerProvider>();
deserializerProvider.Setup(d => d.GetEdmTypeDeserializer(It.IsAny<IEdmTypeReference>())).Returns<ODataEdmTypeDeserializer>(null);
var deserializer = new ODataEntityDeserializer(_productEdmType, deserializerProvider.Object);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { TypeName = _supplierEdmType.FullName() });
Assert.Throws<SerializationException>(
() => deserializer.ReadEntry(entry, _readContext),
"'ODataDemo.Supplier' cannot be deserialized using the ODataMediaTypeFormatter.");
}
public void ApplyNavigationProperties_Calls_ApplyNavigationPropertyForEachNavigationLink()
{
// Arrange
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
entry.NavigationLinks.Add(new ODataNavigationLinkWithItems(new ODataNavigationLink()));
entry.NavigationLinks.Add(new ODataNavigationLinkWithItems(new ODataNavigationLink()));
Mock<ODataEntityDeserializer> deserializer = new Mock<ODataEntityDeserializer>(_productEdmType, _deserializerProvider);
deserializer.CallBase = true;
deserializer.Setup(d => d.ApplyNavigationProperty(42, entry.NavigationLinks[0], _readContext)).Verifiable();
deserializer.Setup(d => d.ApplyNavigationProperty(42, entry.NavigationLinks[1], _readContext)).Verifiable();
// Act
deserializer.Object.ApplyNavigationProperties(42, entry, _readContext);
// Assert
deserializer.Verify();
}
public void ReadEntry_SetsExpectedAndActualEdmType_OnCreatedEdmObject_TypelessMode()
{
// Arrange
CustomersModelWithInheritance model = new CustomersModelWithInheritance();
IEdmEntityTypeReference customerType = EdmLibHelpers.ToEdmTypeReference(model.Customer, isNullable: false).AsEntity();
ODataDeserializerContext readContext = new ODataDeserializerContext { Model = model.Model, ResourceType = typeof(IEdmObject) };
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry
{
TypeName = model.SpecialCustomer.FullName(),
Properties = new ODataProperty[0]
});
ODataEntityDeserializer deserializer = new ODataEntityDeserializer(_deserializerProvider);
// Act
var result = deserializer.ReadEntry(entry, customerType, readContext);
// Assert
EdmEntityObject resource = Assert.IsType<EdmEntityObject>(result);
Assert.Equal(model.SpecialCustomer, resource.ActualEdmType);
Assert.Equal(model.Customer, resource.ExpectedEdmType);
}
public void ApplyStructuralProperties_Calls_ApplyStructuralPropertyOnEachPropertyInEntry()
{
// Arrange
var deserializer = new Mock<ODataEntityDeserializer>(_productEdmType, _deserializerProvider);
ODataProperty[] properties = new[] { new ODataProperty(), new ODataProperty() };
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { Properties = properties });
deserializer.CallBase = true;
deserializer.Setup(d => d.ApplyStructuralProperty(42, properties[0], _readContext)).Verifiable();
deserializer.Setup(d => d.ApplyStructuralProperty(42, properties[1], _readContext)).Verifiable();
// Act
deserializer.Object.ApplyStructuralProperties(42, entry, _readContext);
// Assert
deserializer.Verify();
}
public void ReadInline_Calls_ReadEntry()
{
// Arrange
var deserializer = new Mock<ODataEntityDeserializer>(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
ODataDeserializerContext readContext = new ODataDeserializerContext();
deserializer.CallBase = true;
deserializer.Setup(d => d.ReadEntry(entry, readContext)).Returns(42).Verifiable();
// Act
var result = deserializer.Object.ReadInline(entry, readContext);
// Assert
deserializer.Verify();
Assert.Equal(42, result);
}
public void ReadEntry_DispatchesToRightDeserializer_IfEntityTypeNameIsDifferent()
{
// Arrange
Mock<ODataEdmTypeDeserializer> supplierDeserializer = new Mock<ODataEdmTypeDeserializer>(_supplierEdmType, ODataPayloadKind.Entry);
Mock<ODataDeserializerProvider> deserializerProvider = new Mock<ODataDeserializerProvider>();
var deserializer = new ODataEntityDeserializer(_productEdmType, deserializerProvider.Object);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { TypeName = _supplierEdmType.FullName() });
deserializerProvider.Setup(d => d.GetEdmTypeDeserializer(It.IsAny<IEdmTypeReference>())).Returns(supplierDeserializer.Object);
supplierDeserializer.Setup(d => d.ReadInline(entry, _readContext)).Returns(42).Verifiable();
// Act
object result = deserializer.ReadEntry(entry, _readContext);
// Assert
Assert.Equal(42, result);
supplierDeserializer.Verify();
}
/// <summary>
/// Deserializes the given <paramref name="entryWrapper"/> under the given <paramref name="readContext"/>.
/// </summary>
/// <param name="entryWrapper">The OData entry to deserialize.</param>
/// <param name="entityType">The entity type of the entry to deserialize.</param>
/// <param name="readContext">The deserializer context.</param>
/// <returns>The deserialized entity.</returns>
public virtual object ReadEntry(ODataEntryWithNavigationLinks entryWrapper, IEdmEntityTypeReference entityType,
ODataDeserializerContext readContext)
{
if (entryWrapper == null)
{
throw Error.ArgumentNull("entryWrapper");
}
if (readContext == null)
{
throw Error.ArgumentNull("readContext");
}
if (!String.IsNullOrEmpty(entryWrapper.Entry.TypeName) && entityType.FullName() != entryWrapper.Entry.TypeName)
{
// received a derived type in a base type deserializer. delegate it to the appropriate derived type deserializer.
IEdmModel model = readContext.Model;
if (model == null)
{
throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
}
IEdmEntityType actualType = model.FindType(entryWrapper.Entry.TypeName) as IEdmEntityType;
if (actualType == null)
{
throw new ODataException(Error.Format(SRResources.EntityTypeNotInModel, entryWrapper.Entry.TypeName));
}
if (actualType.IsAbstract)
{
string message = Error.Format(SRResources.CannotInstantiateAbstractEntityType, entryWrapper.Entry.TypeName);
throw new ODataException(message);
}
IEdmTypeReference actualEntityType = new EdmEntityTypeReference(actualType, isNullable: false);
ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(actualEntityType);
if (deserializer == null)
{
throw new SerializationException(
Error.Format(SRResources.TypeCannotBeDeserialized, actualEntityType.FullName(), typeof(ODataMediaTypeFormatter).Name));
}
object resource = deserializer.ReadInline(entryWrapper, actualEntityType, readContext);
EdmStructuredObject structuredObject = resource as EdmStructuredObject;
if (structuredObject != null)
{
structuredObject.ExpectedEdmType = entityType.EntityDefinition();
}
return resource;
}
else
{
object resource = CreateEntityResource(entityType, readContext);
ApplyEntityProperties(resource, entryWrapper, entityType, readContext);
return resource;
}
}
private void ApplyEntityProperties(object entityResource, ODataEntryWithNavigationLinks entryWrapper,
IEdmEntityTypeReference entityType, ODataDeserializerContext readContext)
{
ApplyStructuralProperties(entityResource, entryWrapper, entityType, readContext);
ApplyNavigationProperties(entityResource, entryWrapper, entityType, readContext);
}
public void ReadEntry_ThrowsODataException_EntityTypeNotInModel()
{
var deserializer = new ODataEntityDeserializer(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { TypeName = "MissingType" });
Assert.Throws<ODataException>(
() => deserializer.ReadEntry(entry, _readContext),
"Cannot find the entity type 'MissingType' in the model.");
}
public void ReadEntry_ThrowsArgumentNull_ReadContext()
{
var deserializer = new ODataEntityDeserializer(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry());
Assert.ThrowsArgumentNull(
() => deserializer.ReadEntry(entry, readContext: null),
"readContext");
}
public void ReadEntry_ThrowsODataException_CannotInstantiateAbstractEntityType()
{
ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
builder.Entity<BaseType>().Abstract();
IEdmModel model = builder.GetEdmModel();
var deserializer = new ODataEntityDeserializer(_productEdmType, _deserializerProvider);
ODataEntryWithNavigationLinks entry = new ODataEntryWithNavigationLinks(new ODataEntry { TypeName = "System.Web.Http.OData.Formatter.Deserialization.BaseType" });
Assert.Throws<ODataException>(
() => deserializer.ReadEntry(entry, new ODataDeserializerContext { Model = model }),
"An instance of the abstract entity type 'System.Web.Http.OData.Formatter.Deserialization.BaseType' was found. Abstract entity types cannot be instantiated.");
}
