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SelectMany throws NotSupportedException
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Gal Koren  
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 More options Jun 12 2012, 3:40 pm
From: Gal Koren <koren....@gmail.com>
Date: Tue, 12 Jun 2012 12:40:19 -0700 (PDT)
Local: Tues, Jun 12 2012 3:40 pm
Subject: SelectMany throws NotSupportedException
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Hi.

I might be doing something wrong and I wish to know how to make it right.
This piece of code throws NotSupportedException :

                var results = session.Query<Mailbox>().
                    Where(mailBox => mailBox.Name.Equals("Gal")).
                    SelectMany(mailBox => mailBox.Items).Where(item =>
!item.IsDownloaded);

The story: A MailBox has Items (a collection of "Item"), and I want all the
Items in mailbox "Gal" that are not marked as downloaded.
I'd be thankful for hint and even more thankful for a working example :)

Thanks.


 
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Itamar Syn-Hershko  
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 More options Jun 12 2012, 5:26 pm
From: Itamar Syn-Hershko <ita...@hibernatingrhinos.com>
Date: Wed, 13 Jun 2012 00:26:49 +0300
Local: Tues, Jun 12 2012 5:26 pm
Subject: Re: [RavenDB] SelectMany throws NotSupportedException
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SelectMany is not supported on queries by design. If you want to get the
_items_ from the mailbox document you will need to write an index and
project out of it.

You can get the mailbox document itself rather easily by using the Any()
operator within the .Where() on mailBox.Items


 
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