[nhibernate-issues] [NHJIRA] Commented: (NH-2404) Future queries crash (MultiQuery) when using projection queries using hql + result transformer or the linq provider (which compiles into hql)

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

    [ http://216.121.112.228/browse/NH-2404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21138#action_21138 ] 

Andrei Alecu commented on NH-2404:
----------------------------------

Think it was NH2690 :)

> Future queries crash (MultiQuery) when using projection queries using hql + result transformer or the linq provider (which compiles into hql) 
> ----------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: NH-2404
>                 URL: http://216.121.112.228/browse/NH-2404
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 3.0.0.Beta2, 3.0.0.CR1
>            Reporter: Olli Ryhänen
>            Priority: Major
>             Fix For: 3.2.0Beta1
>
>         Attachments: NH2404_Test.patch
>
>
> Using HQL query to create a projection and then choosing a result transformer to it crashes when using .Future<DTO> method to turn it into a multi-query query with exception:
> System.ArgumentException: The value "System.Object[]" is not of type "DTO"  and cannot be used in this generic collection.
> The same is true when using the new .ToFuture<DTO>() support added for the linq provider and it crashes in the same location of the multi-query implementation.
> Example code that works:
> var query = session.CreateQuery("select e.Id as EntityId, e.Name as EntityName from TestEntity e")
> .SetResultTransformer(Transformers.AliasToBean(typeof (TestEntityDto)))
> .List<TestEntityDto>();
> Same query using future support causes the crash:
> var query = session.CreateQuery("select e.Id as EntityId, e.Name as EntityName from TestEntity e")
> .SetResultTransformer(Transformers.AliasToBean(typeof (TestEntityDto)))
> .Future<TestEntityDto>();

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