Bug? Problems with Indizes and type long.

[Thomas Bandt]

I ran into extremely strange behaviours of my static indizes after switching ids from int to long. After 2 hours of debugging the result seams clear: Raven isn't working with long properly.

Let's take the following map:

Map = bar => from foo in bar

select new FooResult

{

Items = (from item in foo.Items

select new Item

{

ID = item.Key, 

}).ToArray()

};

foo.Items is of type Dictionary<long,SomeOtherType>.

Let's say we have a dictionary of type Dictionary<long, Entity>. So every attempt to access the key results in

docs.bar.Select(foo => new {

    Items = Enumerable.ToArray((foo.Items).Select(item => new {

        ID = (long)item.Key

    }))

})

And that fails.

If I change the type of the key within the dictionary to Int64 everything works as expected.

Thomas

[Thomas Bandt]

followup: Int64 doesn't work neither. It's also converted to long internally (whatever happens there ...).

I'll switch back to int hoping this gets fixed in a future release.

[Kijana Woodard]

When you say "fails" what do you mean? Throws an error when the index is created? Errors when you try to query it? Doesn't return results?

What are you trying to Map in the index? It seems a bit odd that you would create an array of type Item in a Map. Are you trying to search for the foos that have items with some key?

How about 

Items = foo.Items.Select(x => x.Key)

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[Oren Eini (Ayende Rahien)]

Also, Ids are always string in RavenDB

[Thomas Bandt]

Whatever you're trying to work around this issue fails, even a select of the dictionary key. The reason seems to be the cast (long)whatever whenever accessing that key. All that results in not mapping that field or returning nothing.

I switched the type of the dictionary key back to int and everything works again. To be honest, that sucks.

I will provide a running example when I find the time.

[Kijana Woodard]

What does FooResult look like?

[Kijana Woodard]

Ok. Here's a failing test: https://gist.github.com/kijanawoodard/0a34b847086c02ada95d

If I switch the Foo.Items key type to int, it passes.

If I query on Long, directly in Foo, it passes.

A created field worked for int key and fails for long key.

[Thomas Bandt]

Perfect, thank you.

[Oren Eini (Ayende Rahien)]

Okay, found the problem. Will have a fix in the next build.