AsProjection() throwing exception for async query - ravendb

Question

In a simple test scenario which can be setup using the following:
public class TestObj
{
public string Id { get; set; }
public string Name { get; set; }
}
public class Summary
{
public string MyId { get; set; }
public string MyName { get; set; }
}
public class TestObjs_Summary : AbstractIndexCreationTask<TestObj, Summary>
{
public TestObjs_Summary()
{
Map = docs => docs.Select(d => new { MyId = d.Id, MyName = d.Name });
Store(x => x.MyId, FieldStorage.Yes);
Store(x => x.MyName, FieldStorage.Yes);
}
}
static IDocumentStore Setup()
{
var store = new DocumentStore() { Url="http://localhost:8080" };
store.Initialize();
IndexCreation.CreateIndexes(MethodInfo.GetCurrentMethod().DeclaringType.Assembly, store);
using (var session = store.OpenSession())
{
session.Store(new TestObj { Name = "Doc1" });
session.Store(new TestObj { Name = "Doc2" });
session.SaveChanges();
}
return store;
}
I can run a simple synchronous query against the index and get the expected results (2 rows output of type Summary):
using (var session = store.OpenSession())
{
var q = session.Query<Summary>("TestObjs/Summary").AsProjection<Summary>();
Dump("Sync:", q.ToList());
}
However, if I try the same thing using an asynchronous query:
using (var session = store.OpenAsyncSession())
{
var q = session.Query<Summary>("TestObjs/Summary").AsProjection<Summary>();
q.ToListAsync().ContinueWith(t => Dump("Async:", t.Result));
}
I get an InvalidCastException:
InnerException: System.InvalidCastException
Message=Unable to cast object of type 'TestObj' to type 'Summary'.
Source=Raven.Client.Lightweight
StackTrace:
at Raven.Client.Document.InMemoryDocumentSessionOperations.ConvertToEntity[T](String id, RavenJObject documentFound, RavenJObject metadata) in c:\Builds\RavenDB-Unstable\Raven.Client.Lightweight\Document\InMemoryDocumentSessionOperations.cs:line 416
at Raven.Client.Document.InMemoryDocumentSessionOperations.TrackEntity[T](String key, RavenJObject document, RavenJObject metadata) in c:\Builds\RavenDB-Unstable\Raven.Client.Lightweight\Document\InMemoryDocumentSessionOperations.cs:line 340
at Raven.Client.Document.SessionOperations.QueryOperation.Deserialize[T](RavenJObject result) in c:\Builds\RavenDB-Unstable\Raven.Client.Lightweight\Document\SessionOperations\QueryOperation.cs:line 130
...
I suspect this is a bug, but as a RavenDB newbie, I first wanted to rule out the possibility I have screwed something up here. Can anyone see why this code would be failing?
(Note: this was run on Build 721 and on 701 and both produce the same results)
Thanks for any assistance you can provide.

Answer 1

It looks like a bug. I don't see anything wrong in your code. I suggest you create an issue here: http://issues.hibernatingrhinos.com