NHibernate LINQ 3.0 Oracle Expression type 10005 is not supported by this SelectClauseVisitor -

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i have following linq query

    queryresult<list<persondemographic>> members = new queryresult<list<persondemographic>>();      var query = (from ms in this.session.query<membersummary>()                  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 running under transaction section. if use without distinct have no problem. adding distinct gives me exception

{"expression type 10005 not supported selectclausevisitor."}

i can't find definitive. can help?

thanks, paul

there lots of things in query nh can't possibly know how translate sql:

  • topropercase (that looks extension method of yours)
  • string.isnullorwhitespace (that's new in .net 4, nh compiled against 3.5)
  • regex.replace (that's not possible sql, unless have db supports , write dialect it)

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