[nhibernate-issues] [NHJIRA] Commented: (NH-2645) NHibernate LINQ 3.0 connecting to Oracle ODP.Net Expression type 10005 is not supported by this SelectClauseVisitor.

[Paul S. (JIRA) <nh...@gm...>]

    [ http://216.121.112.228/browse/NH-2645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=20894#action_20894 ] 

Paul Speranza commented on NH-2645:
-----------------------------------

I just upgraded to NH 3.1 and now the exception is changed to 

Expression type 'NhDistinctExpression' is not supported by this SelectClauseVisitor.

> NHibernate LINQ 3.0 connecting to Oracle ODP.Net Expression type 10005 is not supported by this SelectClauseVisitor.
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: NH-2645
>                 URL: http://216.121.112.228/browse/NH-2645
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Linq Provider
>    Affects Versions: 3.0.0.GA
>            Reporter: Paul Speranza
>            Priority: Critical
>
> I have the following LINQ query that is mapped to a view
>     QueryResult<List<PersonDemographic>> members = new QueryResult<List<PersonDemographic>>();      
>      var query = (from ms in this.Session.Query<MemberSummary>()                  
>          where ms.NameSearch.StartsWith(firstName.ToUpper())                     
>          && ms.NameSearch2.StartsWith(lastName.ToUpper())                  
>          select new PersonDemographic                  
>         {                      
>            FirstName = ms.FirstName.ToProperCase(),                      
>            LastName = ms.LastName.ToProperCase(),                      
>            PersonId = ms.Id,                      
>            Address = new Address                      
>            {
>              Line1 = ms.AddressLine1.ToProperCase(),                          
>              Line2 = ms.AddressLine2.ToProperCase(),                          
>              City = ms.City.ToProperCase(),                          
>              State = ms.State,                          
>              Zipcode = ms.Zipcode,                      
>            },                      
>            PhoneNumber = new PhoneNumber                      
>            {                           
>                Number = string.IsNullOrWhiteSpace(ms.PhoneNumber) ? null : Regex.Replace(ms.PhoneNumber, @"(\d{3})(\d{3})(\d{4})", "$1-$2-$3")                      
>            }
>        });      
>        if (this.Session.Transaction.IsActive)     
>         {         
>            members.Data = query.Distinct().Take(15).ToList();     
>         }     
>        else     
>        {         
>             using (var transaction = this.Session.BeginTransaction())         
>            {             
>              members.Data = query.Distinct().Take(15).ToList();                                 
>              transaction.Commit();         
>             }     
>        }    
>      
> The code is running under the transaction section. If I use it without a Distinct I have no problem. Adding the Distinct gives me an exception 
> {"Expression type 10005 is not supported by this SelectClauseVisitor."}
> I can't find anything definitive. Can anyone help?
> Thanks, Paul

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