private void WriteDeltaFeedAnnotationsAndValidatePayload(Action <ODataDeltaWriter> action, IEdmEntitySet entitySet, string expectedPayload) { var writerSettings = new ODataMessageWriterSettings { EnableMessageStreamDisposal = false }; writerSettings.SetServiceDocumentUri(new Uri("http://www.example.com/")); MemoryStream stream = new MemoryStream(); IODataResponseMessage responseMessageToWrite = new InMemoryMessage { StatusCode = 200, Stream = stream }; responseMessageToWrite.PreferenceAppliedHeader().AnnotationFilter = "*"; using (var messageWriter = new ODataMessageWriter(responseMessageToWrite, writerSettings, Model)) { ODataDeltaWriter odataDeltaWriter = messageWriter.CreateODataDeltaWriter(entitySet, EntityType); action(odataDeltaWriter); } stream.Position = 0; string payload = (new StreamReader(stream)).ReadToEnd(); Assert.Equal(expectedPayload, payload); }
/// <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); }
private void WriteDeltaEntry(object graph, ODataDeltaWriter writer, ODataSerializerContext writeContext) { Contract.Assert(writeContext != null); IEdmEntityTypeReference entityType = GetEntityType(graph, writeContext); EntityInstanceContext entityInstanceContext = new EntityInstanceContext(writeContext, entityType, graph); SelectExpandNode selectExpandNode = CreateSelectExpandNode(entityInstanceContext); EdmDeltaEntityObject deltaResource = graph as EdmDeltaEntityObject; if (deltaResource != null && deltaResource.NavigationSource != null) { entityInstanceContext.NavigationSource = deltaResource.NavigationSource; } if (selectExpandNode != null) { ODataEntry entry = CreateEntry(selectExpandNode, entityInstanceContext); if (entry != null) { writer.WriteStart(entry); //TODO: Need to add support to write Navigation Links using Delta Writer //https://github.com/OData/odata.net/issues/155 writer.WriteEnd(); } } }
/// <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 void WriteDeltaDeletedEntry(object graph, ODataDeltaWriter writer, ODataSerializerContext writeContext) { EdmDeltaDeletedEntityObject edmDeltaDeletedEntity = graph as EdmDeltaDeletedEntityObject; if (edmDeltaDeletedEntity == null) { throw new SerializationException(Error.Format(SRResources.CannotWriteType, GetType().Name, graph.GetType().FullName)); } ODataDeltaDeletedEntry deltaDeletedEntry = new ODataDeltaDeletedEntry( edmDeltaDeletedEntity.Id, edmDeltaDeletedEntity.Reason); if (deltaDeletedEntry != null) { writer.WriteDeltaDeletedEntry(deltaDeletedEntry); } }
/// <summary> /// Writes the given deltaLink 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 void WriteDeltaLink(object graph, ODataDeltaWriter writer, ODataSerializerContext writeContext) { EdmDeltaLink edmDeltaLink = graph as EdmDeltaLink; if (edmDeltaLink == null) { throw new SerializationException(Error.Format(SRResources.CannotWriteType, GetType().Name, graph.GetType().FullName)); } ODataDeltaLink deltaLink = new ODataDeltaLink( edmDeltaLink.Source, edmDeltaLink.Target, edmDeltaLink.Relationship); if (deltaLink != null) { writer.WriteDeltaLink(deltaLink); } }
private void WriteDeltaResource(object graph, ODataDeltaWriter writer, ODataSerializerContext writeContext) { Contract.Assert(writeContext != null); IEdmStructuredTypeReference structuredType = GetResourceType(graph, writeContext); ResourceContext resourceContext = new ResourceContext(writeContext, structuredType, graph); SelectExpandNode selectExpandNode = CreateSelectExpandNode(resourceContext); if (selectExpandNode != null) { ODataResource resource = CreateResource(selectExpandNode, resourceContext); if (resource != null) { writer.WriteStart(resource); //TODO: Need to add support to write Navigation Links using Delta Writer //https://github.com/OData/odata.net/issues/155 writer.WriteEnd(); } } }
public static void WriteDeltaFeed(ODataDeltaWriter deltaWriter, List <ODataItem> items, bool?countOption, Uri newDeltaLink) { var deltaFeed = new ODataDeltaFeed { DeltaLink = newDeltaLink }; if (countOption == true) { deltaFeed.Count = items.Cast <object>().Count(); } deltaWriter.WriteStart(deltaFeed); foreach (ODataItem item in items) { var entry = item as ODataEntry; var deletedEntry = item as ODataDeltaDeletedEntry; var deltaLink = item as ODataDeltaLink; var deltaDeletedLink = item as ODataDeltaDeletedLink; if (entry != null) { deltaWriter.WriteStart(entry); deltaWriter.WriteEnd(); } else if (deletedEntry != null) { deltaWriter.WriteDeltaDeletedEntry(deletedEntry); } else if (deltaLink != null) { deltaWriter.WriteDeltaLink(deltaLink); } else if (deltaDeletedLink != null) { deltaWriter.WriteDeltaDeletedLink(deltaDeletedLink); } } deltaWriter.WriteEnd(); }
public override void Process(IODataRequestMessage requestMessage, IODataResponseMessage responseMessage) { // TODO: we will need to add server-driven paging for delta link object queryResults = this.QueryContext.ResolveQuery(this.DataSource); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { IEdmNavigationSource navigationSource = this.QueryContext.Target.NavigationSource; IEnumerable iEnumerableResults = queryResults as IEnumerable; if (this.QueryContext.Target.NavigationSource != null && this.QueryContext.Target.TypeKind == EdmTypeKind.Collection) { IEdmEntitySetBase entitySet = navigationSource as IEdmEntitySetBase; IEdmEntityType entityType = this.QueryContext.Target.ElementType as IEdmEntityType; if (entitySet == null || entityType == null) { throw new InvalidOperationException("Invalid target when query feed."); } GenerateDeltaItemsFromFeed(iEnumerableResults, entitySet, ODataVersion.V4, this.QueryContext.QuerySelectExpandClause); Uri newDeltaLink = null; if (this.PreferenceContext.TrackingChanges) { var newDeltaToken = DeltaContext.GenerateDeltaToken(this.QueryContext.QueryUri, iEnumerableResults, entitySet, this.QueryContext.QuerySelectExpandClause); newDeltaLink = new Uri(string.Format("{0}?{1}={2}", this.ServiceRootUri, ServiceConstants.QueryOption_Delta, newDeltaToken)); responseMessage.AddPreferenceApplied(ServiceConstants.Preference_TrackChanging); } ODataDeltaWriter resultWriter = messageWriter.CreateODataDeltaWriter(entitySet, entityType); ResponseWriter.WriteDeltaFeed(resultWriter, this.DeltaItems, this.QueryContext.CountOption, newDeltaLink); resultWriter.Flush(); } else { throw Utility.BuildException(HttpStatusCode.Gone); } } }
private async Task WriteDeltaEntryAsync(object graph, ODataDeltaWriter writer, ODataSerializerContext writeContext) { Contract.Assert(writeContext != null); IEdmEntityTypeReference entityType = GetEntityType(graph, writeContext); EntityInstanceContext entityInstanceContext = await CreateEntityInstanceContextAsync(graph, writeContext, entityType); SelectExpandNode selectExpandNode = await CreateSelectExpandNodeAsync(entityInstanceContext); if (selectExpandNode != null) { ODataEntry entry = await CreateEntryAsync(selectExpandNode, entityInstanceContext); if (entry != null) { writer.WriteStart(entry); //TODO: Need to add support to write Navigation Links using Delta Writer //https://github.com/OData/odata.net/issues/155 writer.WriteEnd(); } } }
/// <summary> /// Writes the given object specified by the parameter graph as a part of an existing OData message using the given /// deltaWriter and the writeContext. /// </summary> /// <param name="graph">The object to be written.</param> /// <param name="expectedType">The expected EDM type of the object represented by <paramref name="graph"/>.</param> /// <param name="writer">The <see cref="ODataDeltaWriter" /> to be used for writing.</param> /// <param name="writeContext">The <see cref="ODataSerializerContext"/>.</param> public virtual void WriteDeltaObjectInline(object graph, IEdmTypeReference expectedType, ODataDeltaWriter writer, ODataSerializerContext writeContext) { if (writer == null) { throw Error.ArgumentNull("writer"); } if (writeContext == null) { throw Error.ArgumentNull("writeContext"); } if (graph == null) { throw new SerializationException(Error.Format(Properties.SRResources.CannotSerializerNull, Entry)); } else { WriteDeltaEntry(graph, writer, writeContext); } }
/// <summary> /// Writes the given object 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="expectedType">The expected EDM type of the object represented by <paramref name="graph"/>.</param> /// <param name="writer">The <see cref="ODataDeltaWriter" /> to be used for writing.</param> /// <param name="writeContext">The <see cref="ODataSerializerContext"/>.</param> public virtual void WriteDeltaFeedInline(object graph, IEdmTypeReference expectedType, ODataDeltaWriter writer, ODataSerializerContext writeContext) { if (writer == null) { throw Error.ArgumentNull("writer"); } if (writeContext == null) { throw Error.ArgumentNull("writeContext"); } if (expectedType == null) { throw Error.ArgumentNull("expectedType"); } if (graph == null) { throw new SerializationException(Error.Format(SRResources.CannotSerializerNull, DeltaFeed)); } IEnumerable enumerable = graph as IEnumerable; // Data to serialize if (enumerable == null) { throw new SerializationException( Error.Format(SRResources.CannotWriteType, GetType().Name, graph.GetType().FullName)); } WriteFeed(enumerable, expectedType, writer, writeContext); }
private void WriteFeed(IEnumerable enumerable, IEdmTypeReference feedType, ODataDeltaWriter writer, ODataSerializerContext writeContext) { Contract.Assert(writer != null); Contract.Assert(writeContext != null); Contract.Assert(enumerable != null); Contract.Assert(feedType != null); ODataDeltaFeed deltaFeed = CreateODataDeltaFeed(enumerable, feedType.AsCollection(), writeContext); if (deltaFeed == null) { throw new SerializationException(Error.Format(SRResources.CannotSerializerNull, DeltaFeed)); } // save this for later to support JSON odata.streaming. Uri nextPageLink = deltaFeed.NextPageLink; deltaFeed.NextPageLink = null; //Start writing of the Delta Feed writer.WriteStart(deltaFeed); //Iterate over all the entries present and select the appropriate write method. //Write method creates ODataDeltaDeletedEntry / ODataDeltaDeletedLink / ODataDeltaLink or ODataEntry. foreach (object entry in enumerable) { if (entry == null) { throw new SerializationException(SRResources.NullElementInCollection); } IEdmChangedObject edmChangedObject = entry as IEdmChangedObject; if (edmChangedObject == null) { throw new SerializationException(Error.Format(SRResources.CannotWriteType, GetType().Name, enumerable.GetType().FullName)); } switch (edmChangedObject.DeltaKind) { case EdmDeltaEntityKind.DeletedEntry: WriteDeltaDeletedEntry(entry, writer, writeContext); break; case EdmDeltaEntityKind.DeletedLinkEntry: WriteDeltaDeletedLink(entry, writer, writeContext); break; case EdmDeltaEntityKind.LinkEntry: WriteDeltaLink(entry, writer, writeContext); break; case EdmDeltaEntityKind.Entry: { IEdmEntityTypeReference elementType = GetEntityType(feedType); ODataEntityTypeSerializer entrySerializer = SerializerProvider.GetEdmTypeSerializer(elementType) as ODataEntityTypeSerializer; if (entrySerializer == null) { throw new SerializationException( Error.Format(SRResources.TypeCannotBeSerialized, elementType.FullName(), typeof(ODataMediaTypeFormatter).Name)); } entrySerializer.WriteDeltaObjectInline(entry, elementType, writer, writeContext); break; } default: break; } } // Subtle and surprising behavior: If the NextPageLink property is set before calling WriteStart(feed), // the next page link will be written early in a manner not compatible with odata.streaming=true. Instead, if // the next page link is not set when calling WriteStart(feed) but is instead set later on that feed // object before calling WriteEnd(), the next page link will be written at the end, as required for // odata.streaming=true support. if (nextPageLink != null) { deltaFeed.NextPageLink = nextPageLink; } //End Writing of the Delta Feed writer.WriteEnd(); }
public override void Process(IODataRequestMessage requestMessage, IODataResponseMessage responseMessage) { var token = HttpUtility.ParseQueryString(RequestUri.Query).Get("$token"); if (string.IsNullOrEmpty(token)) { deltaToken = "common"; } else { deltaToken = token; } if (deltaToken == "common") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Customers?$expand=Orders"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var entitySet = this.DataSource.Model.FindDeclaredEntitySet("Customers"); var entityType = entitySet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(entitySet, entityType); var deltaFeed = new ODataDeltaFeed(); var deltaEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), Properties = new[] { new ODataProperty { Name = "FirstName", Value = "GGGG" } } }; var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var navigationEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataFeedAndEntrySerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(2)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deltaFeed.DeltaLink = new Uri(ServiceConstants.ServiceBaseUri, "$delta?$token=common"); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteEnd(); } } else if (deltaToken == "containment") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments?$expand=BillingStatements"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var accountsSet = this.DataSource.Model.FindDeclaredEntitySet("Accounts"); var accountType = accountsSet.EntityType(); var myPisNav = accountType.FindProperty("MyPaymentInstruments") as IEdmNavigationProperty; var piSet = accountsSet.FindNavigationTarget(myPisNav); var piType = piSet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(piSet as IEdmContainedEntitySet, piType); var deltaFeed = new ODataDeltaFeed(); var deltaEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), Properties = new[] { new ODataProperty { Name = "FriendlyName", Value = "GGGG" } } }; var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901001)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deletedEntry.SetSerializationInfo(new ODataDeltaSerializationInfo() { NavigationSourceName = "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements" }); var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901001)"), "BillingStatements"); var navigationEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901005)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Statement", Properties = new[] { new ODataProperty { Name = "TransactionType", Value = "OnlinePurchase" }, new ODataProperty { Name = "TransactionDescription", Value = "unknown purchase" }, new ODataProperty { Name = "Amount", Value = 32.1 } } }; navigationEntry.SetSerializationInfo(new ODataFeedAndEntrySerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Statement", NavigationSourceKind = EdmNavigationSourceKind.ContainedEntitySet, NavigationSourceName = "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements" }); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901005)"), "BillingStatements"); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteEnd(); } } else if (deltaToken == "derived") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "People?$expand=Microsoft.Test.OData.Services.ODataWCFService.Customer/Orders"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var peopleSet = this.DataSource.Model.FindDeclaredEntitySet("People"); var personType = peopleSet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(peopleSet, personType); var deltaFeed = new ODataDeltaFeed(); var deltaEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Customer", Properties = new[] { new ODataProperty { Name = "City", Value = "GGGG" } } }; var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "People(2)").AbsoluteUri, DeltaDeletedEntryReason.Changed); var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var navigationEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataFeedAndEntrySerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteEnd(); } } else if (deltaToken == "projection") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Customers?$select=PersonID,FirstName,LastName&$expand=Orders($select=OrderID,OrderDate)"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var entitySet = this.DataSource.Model.FindDeclaredEntitySet("Customers"); var entityType = entitySet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(entitySet, entityType); var deltaFeed = new ODataDeltaFeed(); var deltaEntry1 = new ODataEntry { Properties = new[] { new ODataProperty { Name = "PersonID", Value = 1 }, new ODataProperty { Name = "FirstName", Value = "FFFF" }, new ODataProperty { Name = "LastName", Value = "LLLL" }, new ODataProperty { Name = "City", Value = "Beijing" } } }; var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var navigationEntry = new ODataEntry { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataFeedAndEntrySerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); var deletedOrderEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "Orders(20)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deletedOrderEntry.SetSerializationInfo(new ODataDeltaSerializationInfo() { NavigationSourceName = "Orders" }); var deltaEntry2 = new ODataEntry { Properties = new[] { new ODataProperty { Name = "PersonID", Value = 2 }, new ODataProperty { Name = "FirstName", Value = "AAAA" }, } }; deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry1); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedOrderEntry); deltaWriter.WriteStart(deltaEntry2); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); } } }
public override void Process(IODataRequestMessage requestMessage, IODataResponseMessage responseMessage) { var token = HttpUtility.ParseQueryString(RequestUri.Query).Get("$token"); if (string.IsNullOrEmpty(token)) { deltaToken = "common"; } else { deltaToken = token; } if (deltaToken == "common") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Customers?$expand=Orders"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var entitySet = this.DataSource.Model.FindDeclaredEntitySet("Customers"); var entityType = entitySet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(entitySet, entityType); var deltaFeed = new ODataDeltaResourceSet(); var deltaEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), Properties = new[] { new ODataProperty { Name = "FirstName", Value = "GGGG" } } }; var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var navigationEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataResourceSerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(2)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deltaFeed.DeltaLink = new Uri(ServiceConstants.ServiceBaseUri, "$delta?$token=common"); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteEnd(); } } else if (deltaToken == "containment") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments?$expand=BillingStatements"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var accountsSet = this.DataSource.Model.FindDeclaredEntitySet("Accounts"); var accountType = accountsSet.EntityType(); var myPisNav = accountType.FindProperty("MyPaymentInstruments") as IEdmNavigationProperty; var piSet = accountsSet.FindNavigationTarget(myPisNav); var piType = piSet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(piSet as IEdmContainedEntitySet, piType); var deltaFeed = new ODataDeltaResourceSet(); var deltaEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), Properties = new[] { new ODataProperty { Name = "FriendlyName", Value = "GGGG" } } }; var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901001)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deletedEntry.SetSerializationInfo(new ODataDeltaSerializationInfo() { NavigationSourceName = "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements" }); var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901001)"), "BillingStatements"); var navigationEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901005)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Statement", Properties = new[] { new ODataProperty { Name = "TransactionType", Value = "OnlinePurchase" }, new ODataProperty { Name = "TransactionDescription", Value = "unknown purchase" }, new ODataProperty { Name = "Amount", Value = 32.1 } } }; navigationEntry.SetSerializationInfo(new ODataResourceSerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Statement", NavigationSourceKind = EdmNavigationSourceKind.ContainedEntitySet, NavigationSourceName = "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements" }); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)"), new Uri(ServiceConstants.ServiceBaseUri, "Accounts(103)/MyPaymentInstruments(103901)/BillingStatements(103901005)"), "BillingStatements"); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteEnd(); } } else if (deltaToken == "derived") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "People?$expand=Microsoft.Test.OData.Services.ODataWCFService.Customer/Orders"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var peopleSet = this.DataSource.Model.FindDeclaredEntitySet("People"); var personType = peopleSet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(peopleSet, personType); var deltaFeed = new ODataDeltaResourceSet(); var deltaEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Customer", Properties = new[] { new ODataProperty { Name = "City", Value = "GGGG" } } }; var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var deletedEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "People(2)").AbsoluteUri, DeltaDeletedEntryReason.Changed); var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, "People(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var navigationEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataResourceSerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedEntry); deltaWriter.WriteEnd(); } } else if (deltaToken == "expanded") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Customers?$expand=Orders"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var customerSet = this.DataSource.Model.FindDeclaredEntitySet("Customers"); var orderSet = this.DataSource.Model.FindDeclaredEntitySet("Orders"); var peopleSet = this.DataSource.Model.FindDeclaredEntitySet("People"); var customerType = customerSet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(customerSet, customerType); // Delta feed and entry var deltaFeed = new ODataDeltaResourceSet { DeltaLink = new Uri(ServiceConstants.ServiceBaseUri, "$delta?$token=expanded") }; var deltaEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, customerSet.Name + "(1)"), Properties = new[] { new ODataProperty { Name = "FirstName", Value = "GGGG" } } }; var nestedResourceInfoIndeltaEntry = new ODataNestedResourceInfo { Name = "HomeAddress", IsCollection = false, }; var nestedResource = new ODataResource { Properties = new[] { new ODataProperty { Name = "Street", Value = "Zixing Road" }, new ODataProperty { Name = "City", Value = "Shanghai" }, new ODataProperty { Name = "PostalCode", Value = "200001" }, } }; var nestedResourceInfoInExpanded = new ODataNestedResourceInfo { Name = "InfoFromCustomer", IsCollection = false, }; var nestedResourceInExpanded = new ODataResource { Properties = new[] { new ODataProperty { Name = "CustomerMessage", Value = "XXL" }, } }; // Expanded feed var navigationLink = new ODataNestedResourceInfo() { Name = "Orders", IsCollection = true, }; var expandedFeed = new ODataResourceSet(); var expandedEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, orderSet.Name + "(8)"), Properties = new[] { new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(2011, 3, 4, 16, 03, 57, TimeSpan.FromHours(-8)) }, new ODataProperty { Name = "OrderID", Value = 8 }, new ODataProperty { Name = "OrderShelfLifes", Value = new ODataCollectionValue { Items = new object[] { new TimeSpan(1) } } }, new ODataProperty { Name = "ShelfLife", Value = new TimeSpan(1) }, new ODataProperty { Name = "ShipDate", Value = new Date(2014, 8, 12) }, new ODataProperty { Name = "ShipTime", Value = new TimeOfDay(6, 5, 30, 0) }, } }; // Expanded entry var navigationLinkSingle = new ODataNestedResourceInfo() { Name = "Parent", IsCollection = false, }; var expandedEntrySingle = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, peopleSet.Name + "(2)"), Properties = new[] { new ODataProperty { Name = "FirstName", Value = "Jill" }, new ODataProperty { Name = "LastName", Value = "Jones" }, new ODataProperty { Name = "Numbers", Value = new ODataCollectionValue() }, new ODataProperty { Name = "Emails", Value = new ODataCollectionValue() }, new ODataProperty { Name = "PersonID", Value = 2 }, new ODataProperty { Name = "Home", Value = GeographyPoint.Create(15.0, 161.8) }, } }; // Delta feed and entry deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry); deltaWriter.WriteStart(nestedResourceInfoIndeltaEntry); deltaWriter.WriteStart(nestedResource); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); // Expanded feed deltaWriter.WriteStart(navigationLink); deltaWriter.WriteStart(expandedFeed); deltaWriter.WriteStart(expandedEntry); deltaWriter.WriteStart(nestedResourceInfoInExpanded); deltaWriter.WriteStart(nestedResourceInExpanded); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); // Expanded entry deltaWriter.WriteStart(navigationLinkSingle); deltaWriter.WriteStart(expandedEntrySingle); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); // Delta feed and entry deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); } } else if (deltaToken == "projection") { originalUri = new Uri(ServiceConstants.ServiceBaseUri, "Customers?$select=PersonID,FirstName,LastName&$expand=Orders($select=OrderID,OrderDate)"); using (var messageWriter = this.CreateMessageWriter(responseMessage)) { var entitySet = this.DataSource.Model.FindDeclaredEntitySet("Customers"); var entityType = entitySet.EntityType(); ODataDeltaWriter deltaWriter = messageWriter.CreateODataDeltaWriter(entitySet, entityType); var deltaFeed = new ODataDeltaResourceSet(); var deltaEntry1 = new ODataResource { Properties = new[] { new ODataProperty { Name = "PersonID", Value = 1 }, new ODataProperty { Name = "FirstName", Value = "FFFF" }, new ODataProperty { Name = "LastName", Value = "LLLL" }, new ODataProperty { Name = "City", Value = "Beijing" } } }; var deletedLink = new ODataDeltaDeletedLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(8)"), "Orders"); var addedLink = new ODataDeltaLink( new Uri(ServiceConstants.ServiceBaseUri, entitySet.Name + "(1)"), new Uri(ServiceConstants.ServiceBaseUri, "Orders(7)"), "Orders"); var navigationEntry = new ODataResource { Id = new Uri(ServiceConstants.ServiceBaseUri, "Orders(100)"), TypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", Properties = new[] { new ODataProperty { Name = "OrderID", Value = 100 }, new ODataProperty { Name = "OrderDate", Value = new DateTimeOffset(DateTime.Now) } } }; navigationEntry.SetSerializationInfo(new ODataResourceSerializationInfo { NavigationSourceEntityTypeName = "Microsoft.Test.OData.Services.ODataWCFService.Order", NavigationSourceKind = EdmNavigationSourceKind.EntitySet, NavigationSourceName = "Orders" }); var deletedOrderEntry = new ODataDeltaDeletedEntry( new Uri(ServiceConstants.ServiceBaseUri, "Orders(20)").AbsoluteUri, DeltaDeletedEntryReason.Deleted); deletedOrderEntry.SetSerializationInfo(new ODataDeltaSerializationInfo() { NavigationSourceName = "Orders" }); var deltaEntry2 = new ODataResource { Properties = new[] { new ODataProperty { Name = "PersonID", Value = 2 }, new ODataProperty { Name = "FirstName", Value = "AAAA" }, } }; deltaWriter.WriteStart(deltaFeed); deltaWriter.WriteStart(deltaEntry1); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedLink(deletedLink); deltaWriter.WriteDeltaLink(addedLink); deltaWriter.WriteStart(navigationEntry); deltaWriter.WriteEnd(); deltaWriter.WriteDeltaDeletedEntry(deletedOrderEntry); deltaWriter.WriteStart(deltaEntry2); deltaWriter.WriteEnd(); deltaWriter.WriteEnd(); } } }
/// <summary> /// Writes the given object specified by the parameter graph as a part of an existing OData message using the given /// deltaWriter and the writeContext. /// </summary> /// <param name="graph">The object to be written.</param> /// <param name="expectedType">The expected EDM type of the object represented by <paramref name="graph"/>.</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 WriteDeltaObjectInline(object graph, IEdmTypeReference expectedType, ODataDeltaWriter writer, ODataSerializerContext writeContext) { if (writer == null) { throw Error.ArgumentNull("writer"); } if (writeContext == null) { throw Error.ArgumentNull("writeContext"); } if (graph == null) { throw new SerializationException(Error.Format(SRResources.CannotSerializerNull, Resource)); } else { await WriteDeltaResource(graph, writer, writeContext); } }