POC for writing instance annotations and odata.count for expanded resource sets

[KenitoInc]

Issues

POC for writing instance annotations for expanded resoource sets

Description

• We need to support read/write instance annotations for expanded resource sets.
• We need to enable writing count value for expanded resource set without writing the resource set value.

In this POC, we are adding 2 properties to the ODataNestedResourceInfo

• public long? Count
• public ICollection<ODataInstanceAnnotation> InstanceAnnotations So we can write the instance annotations and odata.count for an expanded resource set as follows:

var entryToWrite = new ODataResource { Properties = new[] { new ODataProperty { Name = "ID", Value = 1 } } };
odataWriter.WriteStart(entryToWrite);

ODataNestedResourceInfo navLink = new ODataNestedResourceInfo { Name = "ResourceSetNavigationProperty", Url = new Uri("http://service/navLink", UriKind.RelativeOrAbsolute), IsCollection = true };
navLink.Count = 10;
navLink.InstanceAnnotations.Add(new ODataInstanceAnnotation("custom.StartFeedAnnotation", PrimitiveValue1));
odataWriter.WriteStart(navLink);

odataWriter.WriteEnd();
odataWriter.WriteEnd();

Checklist (Uncheck if it is not completed)

• [ ] Test cases added
• [ ] Build and test with one-click build and test script passed

Additional work necessary

If documentation update is needed, please add "Docs Needed" label to the issue and provide details about the required document change in the issue.

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This PR has 98 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Total files changed: 8

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.txt : +1 -0

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[mikepizzo]

@corranrogue9 -- This is a good item to put on the 8.0 list. We don't have a good way to fix this in 7.x without being a breaking change. @KenitoInc has more context, and a design doc that describes the different options.