C# Serialization.SelectExpandNode类代码示例

        public override ODataEntry CreateEntry(SelectExpandNode selectExpandNode, EntityInstanceContext entityInstanceContext)
        {
            var entry = base.CreateEntry(selectExpandNode, entityInstanceContext);

            TryAnnotateV1FeedPackage(entry, entityInstanceContext);
            TryAnnotateV2FeedPackage(entry, entityInstanceContext);

            return entry;
        }

        public override ODataEntry CreateEntry(SelectExpandNode selectExpandNode, EntityInstanceContext entityInstanceContext)
        {
            ODataEntry entry = base.CreateEntry(selectExpandNode, entityInstanceContext);

            Document document = entityInstanceContext.EntityInstance as Document;
            if (entry != null && document != null)
            {
                // annotate the document with the score.
                entry.InstanceAnnotations.Add(new ODataInstanceAnnotation("org.northwind.search.score", new ODataPrimitiveValue(document.Score)));
            }

            return entry;
        }

        [InlineData("ID,Orders/ID,Orders/Customer/ID", "Orders,Orders/Customer", true, "ID")] // deep expand and selects
        public void GetPropertiesToBeSelected_Selects_ExpectedProperties_OnCustomer(
            string select, string expand, bool specialCustomer, string structuralPropertiesToSelect)
        {
            // Arrange
            SelectExpandClause selectExpandClause =
                new ODataUriParser(_model.Model, serviceRoot: null).ParseSelectAndExpand(select, expand, _model.Customer, _model.Customers);
            IEdmEntityType entityType = specialCustomer ? _model.SpecialCustomer : _model.Customer;

            // Act
            SelectExpandNode selectExpandNode = new SelectExpandNode(selectExpandClause, entityType, _model.Model);
            var result = selectExpandNode.SelectedStructuralProperties;

            // Assert
            Assert.Equal(structuralPropertiesToSelect, String.Join(",", result.Select(p => p.Name).OrderBy(n => n)));
        }

        /// <summary>
        /// Builds the <see cref="SelectExpandNode"/> describing the set of structural properties and navigation properties and actions to select
        /// and navigation properties to expand while writing an entry of type <paramref name="entityType"/> for the given 
        /// <paramref name="selectExpandClause"/>.
        /// </summary>
        /// <param name="selectExpandClause">The parsed $select and $expand query options.</param>
        /// <param name="entityType">The entity type of the entry that would be written.</param>
        /// <param name="model">The <see cref="IEdmModel"/> that contains the given entity type.</param>
        /// <returns>The built <see cref="SelectExpandNode"/>.</returns>
        public static SelectExpandNode BuildSelectExpandNode(SelectExpandClause selectExpandClause, IEdmEntityTypeReference entityType, IEdmModel model)
        {
            if (entityType == null)
            {
                throw Error.ArgumentNull("entityType");
            }
            if (model == null)
            {
                throw Error.ArgumentNull("model");
            }

            SelectExpandNode selectExpandNode = new SelectExpandNode();
            if (selectExpandClause != null && selectExpandClause.Expansion != null)
            {
                selectExpandNode.BuildExpansions(selectExpandClause.Expansion, entityType);
            }
            selectExpandNode.BuildSelections(selectExpandClause == null ? null : selectExpandClause.Selection, entityType, model);

            // remove expanded navigation properties from the selected navigation properties.
            IEnumerable<IEdmNavigationProperty> expandedNavigationProperties = selectExpandNode.ExpandedNavigationProperties.Keys;
            selectExpandNode.SelectedNavigationProperties.ExceptWith(expandedNavigationProperties);

            return selectExpandNode;
        }

        public void CreateEntry_IgnoresProperty_IfCreateStructuralPropertyReturnsNull()
        {
            // Arrange
            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedStructuralProperties = { new Mock<IEdmStructuralProperty>().Object }
            };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializer.EdmType, _serializerProvider);
            serializer.CallBase = true;

            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(0), _entityInstanceContext))
                .Returns<ODataProperty>(null);

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, _entityInstanceContext);

            // Assert
            serializer.Verify();
            Assert.Empty(entry.Properties);
        }

        public void CreateEntry_Calls_CreateStructuralProperty_ForEachSelectedStructuralProperty()
        {
            // Arrange
            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedStructuralProperties = { new Mock<IEdmStructuralProperty>().Object, new Mock<IEdmStructuralProperty>().Object }
            };
            ODataProperty[] properties = new ODataProperty[] { new ODataProperty(), new ODataProperty() };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializer.EdmType, _serializerProvider);
            serializer.CallBase = true;

            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(0), _entityInstanceContext))
                .Returns(properties[0])
                .Verifiable();
            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(1), _entityInstanceContext))
                .Returns(properties[1])
                .Verifiable();

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, _entityInstanceContext);

            // Assert
            serializer.Verify();
            Assert.Equal(properties, entry.Properties);
        }

        public void WriteObjectInline_CanExpandNavigationProperty_ContainingEdmObject()
        {
            // Arrange
            IEdmEntityType customerType = _customerSet.ElementType;
            IEdmNavigationProperty ordersProperty = customerType.NavigationProperties().Single(p => p.Name == "Orders");

            Mock<IEdmObject> orders = new Mock<IEdmObject>();
            orders.Setup(o => o.GetEdmType()).Returns(ordersProperty.Type);
            object ordersValue = orders.Object;

            Mock<IEdmEntityObject> customer = new Mock<IEdmEntityObject>();
            customer.Setup(c => c.TryGetPropertyValue("Orders", out ordersValue)).Returns(true);
            customer.Setup(c => c.GetEdmType()).Returns(customerType.AsReference());

            SelectExpandClause selectExpandClause = new ODataUriParser(_model, serviceRoot: null).ParseSelectAndExpand("Orders", "Orders", customerType, _customerSet);
            SelectExpandNode selectExpandNode = new SelectExpandNode();
            selectExpandNode.ExpandedNavigationProperties[ordersProperty] = selectExpandClause.SelectedItems.OfType<ExpandedNavigationSelectItem>().Single().SelectAndExpand;

            Mock<ODataWriter> writer = new Mock<ODataWriter>();

            Mock<ODataEdmTypeSerializer> ordersSerializer = new Mock<ODataEdmTypeSerializer>(_serializer.EdmType, ODataPayloadKind.Entry);
            ordersSerializer.Setup(s => s.WriteObjectInline(ordersValue, writer.Object, It.IsAny<ODataSerializerContext>())).Verifiable();

            Mock<ODataSerializerProvider> serializerProvider = new Mock<ODataSerializerProvider>();
            serializerProvider.Setup(p => p.GetEdmTypeSerializer(ordersProperty.Type)).Returns(ordersSerializer.Object);

            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializer.EdmType, serializerProvider.Object);
            serializer.Setup(s => s.CreateSelectExpandNode(It.IsAny<EntityInstanceContext>())).Returns(selectExpandNode);
            serializer.CallBase = true;

            // Act
            serializer.Object.WriteObjectInline(customer.Object, writer.Object, _writeContext);

            //Assert
            ordersSerializer.Verify();
        }

        public void GetPropertiesToBeSelected_Selects_ExpectedProperties_OnExpandedOrders(
            string select, string expand, bool specialOrder, string structuralPropertiesToSelect)
        {
            // Arrange
            SelectExpandClause selectExpandClause =
                new ODataUriParser(_model.Model, serviceRoot: null).ParseSelectAndExpand(select, expand, _model.Customer, _model.Customers);
            SelectExpandClause nestedSelectExpandClause = selectExpandClause.SelectedItems.OfType<ExpandedNavigationSelectItem>().Single().SelectAndExpand;

            IEdmEntityTypeReference entityType = new EdmEntityTypeReference((specialOrder ? _model.SpecialOrder : _model.Order), false);

            // Act
            SelectExpandNode selectExpandNode = new SelectExpandNode(nestedSelectExpandClause, entityType, _model.Model);
            var result = selectExpandNode.SelectedStructuralProperties;

            // Assert
            Assert.Equal(structuralPropertiesToSelect, String.Join(",", result.Select(p => p.Name).OrderBy(n => n)));
        }

        public void WriteObjectInline_WritesCorrectReadLink()
        {
            // Arrange
            EntityInstanceContext instanceContext = new EntityInstanceContext { SerializerContext = _writeContext };
            bool customReadLinkbuilderCalled = false;
            EntitySetLinkBuilderAnnotation linkAnnotation = new MockEntitySetLinkBuilderAnnotation
            {
                ReadLinkBuilder = new SelfLinkBuilder<Uri>((EntityInstanceContext context) =>
                {
                    Assert.Same(instanceContext, context);
                    customReadLinkbuilderCalled = true;
                    return new Uri("http://sample_read_link");
                },
                followsConventions: false)
            };

            _model.SetEntitySetLinkBuilder(_customerSet, linkAnnotation);

            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializer.EdmType, _serializerProvider);
            serializer.CallBase = true;
            SelectExpandNode selectExpandNode = new SelectExpandNode();

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, instanceContext);

            // Assert
            Assert.True(customReadLinkbuilderCalled);
        }

        public void WriteObjectInline_SetsParentContext_ForExpandedNavigationProperties()
        {
            // Arrange
            ODataWriter mockWriter = new Mock<ODataWriter>().Object;
            IEdmNavigationProperty ordersProperty = _customerSet.ElementType.DeclaredNavigationProperties().Single();
            Mock<ODataEdmTypeSerializer> expandedItemSerializer = new Mock<ODataEdmTypeSerializer>(ordersProperty.Type, ODataPayloadKind.Feed);
            Mock<ODataSerializerProvider> serializerProvider = new Mock<ODataSerializerProvider>();
            serializerProvider.Setup(p => p.GetODataPayloadSerializer(_model, _customer.Orders.GetType())).Returns(expandedItemSerializer.Object);

            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                ExpandedNavigationProperties = 
                {
                     { ordersProperty, new SelectExpandClause(new SelectItem[0], allSelected: true) }
                }
            };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializer.EdmType, serializerProvider.Object);
            serializer.Setup(s => s.CreateSelectExpandNode(It.IsAny<EntityInstanceContext>())).Returns(selectExpandNode);
            serializer.Setup(s => s.CreateEntry(selectExpandNode, _entityInstanceContext)).Returns(new ODataEntry());
            serializer.CallBase = true;

            // Act
            serializer.Object.WriteObjectInline(_customer, mockWriter, _writeContext);

            // Assert
            expandedItemSerializer.Verify(
                s => s.WriteObjectInline(It.IsAny<object>(), mockWriter, It.Is<ODataSerializerContext>(c => c.ExpandedEntity.SerializerContext == _writeContext)));
        }

        public void WriteObjectInline_Calls_CreateNavigationLink_ForEachSelectedNavigationProperty()
        {
            // Arrange
            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedNavigationProperties =
                {
                    new Mock<IEdmNavigationProperty>().Object,
                    new Mock<IEdmNavigationProperty>().Object
                }
            };
            Mock<ODataWriter> writer = new Mock<ODataWriter>();
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializerProvider);
            serializer.Setup(s => s.CreateSelectExpandNode(It.IsAny<EntityInstanceContext>())).Returns(selectExpandNode);
            serializer.CallBase = true;

            serializer.Setup(s => s.CreateNavigationLink(selectExpandNode.SelectedNavigationProperties.ElementAt(0), It.IsAny<EntityInstanceContext>())).Verifiable();
            serializer.Setup(s => s.CreateNavigationLink(selectExpandNode.SelectedNavigationProperties.ElementAt(1), It.IsAny<EntityInstanceContext>())).Verifiable();

            // Act
            serializer.Object.WriteObjectInline(_customer, _customerType, writer.Object, _writeContext);

            // Assert
            serializer.Verify();
        }

        /// <summary>
        /// Creates the <see cref="SelectExpandNode"/> that describes the set of properties and actions to select and expand while writing this entity.
        /// </summary>
        /// <param name="entityInstanceContext">Contains the entity instance being written and the context.</param>
        /// <returns>
        /// The <see cref="SelectExpandNode"/> that describes the set of properties and actions to select and expand while writing this entity.
        /// </returns>
        public virtual SelectExpandNode CreateSelectExpandNode(EntityInstanceContext entityInstanceContext)
        {
            if (entityInstanceContext == null)
            {
                throw Error.ArgumentNull("entityInstanceContext");
            }

            ODataSerializerContext writeContext = entityInstanceContext.SerializerContext;
            IEdmEntityType entityType = entityInstanceContext.EntityType;

            object selectExpandNode;
            Tuple<SelectExpandClause, IEdmEntityType> key = Tuple.Create(writeContext.SelectExpandClause, entityType);
            if (!writeContext.Items.TryGetValue(key, out selectExpandNode))
            {
                // cache the selectExpandNode so that if we are writing a feed we don't have to construct it again.
                selectExpandNode = new SelectExpandNode(writeContext.SelectExpandClause, entityType, writeContext.Model);
                writeContext.Items[key] = selectExpandNode;
            }
            return selectExpandNode as SelectExpandNode;
        }

        public void CreateEntry_SetsEtagToNotNull_IfWithConcurrencyProperty()
        {
            // Arrange
            Mock<IEdmStructuralProperty> mockConcurrencyProperty = new Mock<IEdmStructuralProperty>();
            mockConcurrencyProperty.SetupGet(s => s.ConcurrencyMode).Returns(EdmConcurrencyMode.Fixed);
            mockConcurrencyProperty.SetupGet(s => s.Name).Returns("City");
            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedStructuralProperties = { new Mock<IEdmStructuralProperty>().Object, mockConcurrencyProperty.Object }
            };
            ODataProperty[] properties = new[] { new ODataProperty(), new ODataProperty() };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializerProvider);
            serializer.CallBase = true;
            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(0), _entityInstanceContext))
                .Returns(properties[0]);
            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(1), _entityInstanceContext))
                .Returns(properties[1]);

            MockHttpRequestMessage request = new MockHttpRequestMessage();
            HttpConfiguration configuration = new HttpConfiguration();
            Mock<IETagHandler> mockETagHandler = new Mock<IETagHandler>();
            string tag = "\"'anycity'\"";
            EntityTagHeaderValue etagHeaderValue = new EntityTagHeaderValue(tag, isWeak: true);
            mockETagHandler.Setup(e => e.CreateETag(It.IsAny<IDictionary<string, object>>())).Returns(etagHeaderValue);
            configuration.SetETagHandler(mockETagHandler.Object);
            request.SetConfiguration(configuration);
            _entityInstanceContext.Request = request;

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, _entityInstanceContext);

            // Assert
            Assert.Equal(etagHeaderValue.ToString(), entry.ETag);
        }

        public void CreateEntry_SetsETagToNull_IfModelDontHaveConcurrencyProperty()
        {
            // Arrange
            IEdmEntitySet orderSet = _model.FindDeclaredEntityContainer("Default.Container").FindEntitySet("Orders");
            Order order = new Order()
            {
                Name = "Foo",
                Shipment = "Bar",
                ID = 10,
            };
            _writeContext.EntitySet = orderSet;
            _entityInstanceContext = new EntityInstanceContext(_writeContext, orderSet.ElementType.AsReference(), order);

            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedStructuralProperties = { new Mock<IEdmStructuralProperty>().Object, new Mock<IEdmStructuralProperty>().Object }
            };
            ODataProperty[] properties = new[] { new ODataProperty(), new ODataProperty() };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializerProvider);
            serializer.CallBase = true;

            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(0), _entityInstanceContext))
                .Returns(properties[0]);
            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(1), _entityInstanceContext))
                .Returns(properties[1]);

            MockHttpRequestMessage request = new MockHttpRequestMessage();
            request.SetConfiguration(new HttpConfiguration());
            _entityInstanceContext.Request = request;

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, _entityInstanceContext);

            // Assert
            Assert.Null(entry.ETag);
        }

        public void CreateEntry_SetsETagToNull_IfRequestIsNull()
        {
            // Arrange
            SelectExpandNode selectExpandNode = new SelectExpandNode
            {
                SelectedStructuralProperties = { new Mock<IEdmStructuralProperty>().Object, new Mock<IEdmStructuralProperty>().Object }
            };
            ODataProperty[] properties = new[] { new ODataProperty(), new ODataProperty() };
            Mock<ODataEntityTypeSerializer> serializer = new Mock<ODataEntityTypeSerializer>(_serializerProvider);
            serializer.CallBase = true;

            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(0), _entityInstanceContext))
                .Returns(properties[0]);
            serializer
                .Setup(s => s.CreateStructuralProperty(selectExpandNode.SelectedStructuralProperties.ElementAt(1), _entityInstanceContext))
                .Returns(properties[1]);

            // Act
            ODataEntry entry = serializer.Object.CreateEntry(selectExpandNode, _entityInstanceContext);

            // Assert
            Assert.Null(entry.ETag);
        }