Fluent NHibernate without Automapping SQL Exception, Incorrect syntax near the keyword 'User' - nhibernate

Question

Just starting in NHibernate and to my eye Everything seems correct but obviously is not. When I ren unit tests shown below I receive back that there is a syntax error near the keyword "User"
here is my user class:
namespace Users
{
public class User
{
public virtual string firstName { get; set; }
public virtual string lastName { get; set; }
public virtual int Id { get; set; }
}
}
and the User mapping(Also ran without square brackets around column names with identical results:
namespace Users
{
class UserMap: ClassMap<User>
{
UserMap()
{
Table("User");
Id(x => x.Id).GeneratedBy.Native().Column("[Id]").Not.Nullable();
Map(x => x.firstName).Not.Nullable().Column("[firstName]");
Map(x => x.lastName).Not.Nullable().Column("[lastName]");
}
}
}
The Config file named Framework.cs
namespace Users
{
public class Framework
{
private const string ConnectionStr = "Data Source=ERALCH-ESTEPHEN;Initial
Catalog=NHDev;Integrated Security=True;Pooling=False";
public static ISessionFactory CreateFactory()
{
return Fluently.Configure()
.Database(FluentNHibernate.Cfg.Db.MsSqlConfiguration
.MsSql2008
.ConnectionString(ConnectionStr))
.Mappings(x=>x.FluentMappings.AddFromAssemblyOf<User>())
.BuildSessionFactory();
}
}
}
The Data Access Layer-- simply retrieves a user by Id
namespace Users
{
public class Accesslayer
{
public static IList<User> GetUserById(int Id)
{
ISessionFactory provider = Framework.CreateFactory();
using (ISession session = provider.OpenSession())
{
return session.CreateSQLQuery(String
.Format("SELECT * FROM User WHERE Id={0}", Id)).List<User>();
}
}
}
}
and finally the unit test layer
namespace Users
{
[TestFixture]
class AccessLayerTest
{
[Test]
public void CanGetUserById()
{
Assert.AreEqual(1, Accesslayer.GetUserById(1).Count());
}
}
}
The Database is MSsql with one table "User" with columns matching the user properties. Any help would be appreciated thanks

Answer 1

You should be able to do this in your configuration:
var factory = Fluently.Configure()
// ...
.ExposeConfiguration(c => SchemaMetadataUpdater.QuoteTableAndColumns(c))
.BuildSessionFactory();
Which should escape your table and column names for you automagically.

Answer 2

Did you try putting backticks around your User table name ?
namespace Users
{
class UserMap: ClassMap<User>
{
UserMap()
{
Table("`User`");
Id(x => x.Id).GeneratedBy.Native().Column("`Id`").Not.Nullable();
Map(x => x.firstName).Not.Nullable().Column("`firstName`");
Map(x => x.lastName).Not.Nullable().Column("`lastName`");
}
}
}
See this answer for more details : NHibernate - Force escaping on Table Names
Also, you should use NHibernate querying facilities instead of SQL :
namespace Users
{
public class Accesslayer
{
public static IList<User> GetUserById(int Id)
{
ISessionFactory provider = Framework.CreateFactory();
using (ISession session = provider.OpenSession())
{
return session.Query<User>().Where(x => x.Id == Id ).List<User>();
}
}
}
}
Have a look at this tutorial : http://www.d80.co.uk/post/2011/02/20/Linq-to-NHibernate-Tutorial.aspx

Answer 3

You should need the [Brackets] while mapping. Heck, if they have the same name, both of these would work the same:
public class UserMap: ClassMap<User>
{
UserMap()
{
Table("User");
Id(x => x.Id).GeneratedBy.Native().Not.Nullable();
Map(x => x.firstName).Not.Nullable();
Map(x => x.lastName).Not.Nullable();
}
}
public class UserMap: ClassMap<User>
{
UserMap()
{
Table("User");
Id(x => x.Id, "Id").GeneratedBy.Native().Not.Nullable();
Map(x => x.firstName, "firstName").Not.Nullable();
Map(x => x.lastName, "lastName").Not.Nullable();
}
}

Answer 4

Avoid naming your tables or columns using Reserved Keywords. Hibernate forms a SQL-Statement which won't be accepted by MS SQL. Had the same problem with NHibernate + Fluent + Automapper and solved it by renaming the "user"-column to "username". Don't know how other DBs handle it.
Further comments about this here.