Fluent NH Fluent NHibernate offers an alternative to NHibernate’s standard XML mapping files. Rather than writing XML documents, you write mappings in strongly typed C# code. This allows for easy refactoring, improved readability and more concise code. vs. NH’s new mapping by code It is an XML-less mapping solution being an integral part of NHibernate … Read more
NHibernate 3.2 comes with its own proxy factory. If you’re using a config file, you just need to remove the proxyfactory configuration property. I believe the version of Fluent NHibernate that you’re using defaults to use NHibernate.ByteCode.Castle. In that case, you would need to override that setting with the built in NHibernate 3.2 proxy factory: … Read more
The following apparently no longer works https://stackoverflow.com/a/503327/189412 How about just doing this: public AgencyMap() { Id(o => o.Id); Map(o => o.AccountHolderName); Map(o => o.AccountType).CustomType<AccountType>(); } The custom type handles everything 🙂
Change MsSqlConfiguration.MsSql2005, to MySqlConfiguration.Standard, it was the one thing I contributed to the project. Example: Fluently.Configure().Database( MySqlConfiguration.Standard.ConnectionString( c => c.FromConnectionStringWithKey(“ConnectionString”) ) ) .Mappings(m => m.FluentMappings.AddFromAssemblyOf<MyAutofacModule>()) .BuildSessionFactory())
Use Table(“table_name”) instead.
The wiki is your best bet. I’ve had a few Fluent NHibernate posts on my blog, but most of that content is mirrored on the wiki anyway.
Fluent NHIbernate sits on top of NHibernate, so its not really a choice between the two. If youre going to use NHibernate, CHOOSE to use Fluent NH on top of it to save yourself vast amounts of effort. Fluent NHibernate is awesome, I wouldn’t use NHibernate without it. You can fluently map all your entities … Read more
HasOne creates a one-to-one mapping between tables for you. References creates a typical relational many-to-one relationship. More defined: a one-to-one relationship means that when one record exists in one table, it must (or can) have one and at most one record in the other referenced table. Example: User table and Options table (one user has … Read more
You can just use SchemaUpdate instead, it will update the schema if it exists and create it if it does not: public NhibernateSessionFactory(IPersistenceConfigurer config) { _sessionFactory = Fluently.Configure(). Database(config). Mappings(m => m.FluentMappings.AddFromAssemblyOf<MappingsPersistenceModel>()). ExposeConfiguration(cfg => new SchemaUpdate(cfg).Execute(false, true)). BuildSessionFactory(); } One caveat: SchemaUpdate does not do destructive updates (dropping tables, columns, etc.). It will only add … Read more
There’s a CompositeId method. public class EntityMap : ClassMap<Entity> { public EntityMap() { CompositeId() .KeyProperty(x => x.Something) .KeyReference(x => x.SomethingElse); } }