[nhibernate-issues] [NHJIRA] Commented: (NH-2328) Linq query on <Any/> fails

[Andrei A. (JIRA) <nh...@gm...>]

    [ http://216.121.112.228/browse/NH-2328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21151#action_21151 ] 

Andrei Alecu commented on NH-2328:
----------------------------------

After further experimenting I'm certain this is broken in HQL, and is not really a Linq issue, so once HQL is fixed, Linq should work too.

Running:

  var boxes = s.CreateQuery("from ToyBox t where t.Shape.class = Square") 
    .List<ToyBox>(); 

I tracked it down to ProcessConstant(SqlNode constant, bool resolveIdent) in LiteralProcessor.cs

The code ends up here:

				IQueryable queryable = _walker.SessionFactoryHelper.FindQueryableUsingImports(constant.Text);
				if (isIdent && queryable != null)
				{
					constant.Text = queryable.DiscriminatorSQLValue;
				}

But queryable.DiscriminatorSQLValue is null because queryable contains an instance of a non-polymorphic SingleTableEntityPersister<>.

If, while debugging, I manually put the value "2" (the meta-value of Shape) instead of null in constant.Text, the test passes.

I'm looking at ways of extracting the meta-value so it can be used there.


> Linq query on <Any/> fails
> --------------------------
>
>                 Key: NH-2328
>                 URL: http://216.121.112.228/browse/NH-2328
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Linq Provider
>    Affects Versions: 3.0.0.Alpha2
>            Reporter: Michael Kobaly
>            Priority: Major
>         Attachments: NHibernate.Test.zip
>
>
> Please read NHUsers group posting here for description of problem.
> http://groups.google.com/group/nhusers/browse_thread/thread/fa831bd703842e1e
> I excluded the lib folder from the zip file since upload says not to include dlls. I am using NH 3 Alpha 2 with all supporting dlls. First time posting bug..sorry in advance if I am doing it wrong.

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