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();
}
}
}
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();
}
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();
}
}
}
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();
}
}
}
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();
}
}
}