Will the following NHibernate interface mapping work?

Posted by Ben Aston on Stack Overflow See other posts from Stack Overflow or by Ben Aston
Published on 2010-04-19T15:43:11Z Indexed on 2010/04/19 17:13 UTC
Read the original article Hit count: 352

Filed under:

nhibernate-mapping

|

nhibernate

|

hibernate

I'd like to program against interfaces when working with NHibernate due to type dependency issues within the solution I am working with.

SO questions such as this indicate it is possible.

I have an ILocation interface and a concrete Location type. Will the following work?

HBM mapping:

<class name="ILocation" abstract="true" table="ILocation">
  <id name="Id" type="System.Guid" unsaved-value="00000000-0000-0000-0000-000000000000">
    <column name="LocationId" />
    <generator class="guid" />
  </id>       
        <union-subclass table="Location" name="Location">
                <property name="Name" type="System.String"/>
        </union-subclass>
</class>

Detached criteria usage using the interface:

var criteria = DetachedCriteria.For<ILocation>().Add(Restrictions.Eq("Name", "blah"));            
var locations = criteria.GetExecutableCriteria(UoW.Session).List<ILocation>();

Are there any issues with not using the hilo ID generator and/or with this approach in general?

© Stack Overflow or respective owner

Related posts about nhibernate-mapping

Nhibernate mapping

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All I am trying to map Users to each other. The senario is that users can have buddies, so it links to itself I was thinking of this public class User { public virtual Guid Id { get; set; } public virtual string FirstName { get; set; } public virtual string LastName… >>> More
Need help with NHibernate / Fluent NHibernate mapping

as seen on Stack Overflow - Search for 'Stack Overflow'
Let's say your have the following table structure: ============================== | Case | ============================== | Id | int | | ReferralType | varchar(10) | … >>> More
Mapping a collection of enums with NHibernate

as seen on Stack Overflow - Search for 'Stack Overflow'
Mapping a collection of enums with NHibernate Specifically, using Attributes for the mappings. Currently I have this working mapping the collection as type Int32 and NH seems to take care of it, but it's not exactly ideal. The error I receive is "Unable to determine type" when trying to map the… >>> More
Multiple tables\objects in one nHibernate mapping

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Folks I am trying to create an nHibernate mapping for a class structure like so: class UserDetails{ Guid id; User user; Role role; public User UserInfo{ get;set; } public Role UserRoles{ get;set; } public Guid ID{ Get; set; } } class… >>> More
(Fluent)NHibernate: Mapping an IDictionary<MappedClass, MyEnum>

as seen on Stack Overflow - Search for 'Stack Overflow'
I've found a number of posts about this but none seem to help me directly. Also there seems to be confusion about solutions working or not working during different stages of FluentNHibernate's development. I have the following classes: public class MappedClass { ... } public enum MyEnum { … >>> More

Related posts about nhibernate

How can I eager-load a child collection mapped to a non-primary key in NHibernate 2.1.2?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have two objects with a many-to-many relationship between them, as follows: public class LeftHandSide { public LeftHandSide() { Name = String.Empty; Rights = new HashSet<RightHandSide>(); } public int Id { get; set; } public string Name { get; set;… >>> More
Nhibernate 2.1 and mysql 5 - InvalidCastException on Setup

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello there, I am trying to use NHibernate with Spring.Net und mySQL 5. However, when setting up the connection and creating the SessionFactoryObject, I get this InvalidCastException: NHibernate seems to cast MySql.Data.MySqlClient.MySqlConnection to System.Data.Common.DbConnection which causes… >>> More
Nhibernate transactions:Avoiding Nhibernate dependency in the service layer

as seen on Stack Overflow - Search for 'Stack Overflow'
One of practices advocated by Nhibernate experts is to do all actions in inside a transaction. In a typical 3 tier web architecture, Nhibernate depedency is limited the data layer. In such a case is it fine to use using (var tr = NHibernateSession.Current.BeginTransaction()) { at the controller… >>> More
Series of abstract classes and NHibernate

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, and first off thanks for your time to look at this. For a research project I'm working on, I have a somewhat complex design (which I've been given) to persist to a database via NHibernate. Here's an example of the class hierarchy: TransitStrategy, TransportationCompany and TransportationLocation… >>> More
Using Time columns with NHibernate, Fluent NHibernate and SQL Server 2008

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I have a table with a time column in my SQL Server 2008 database. The property of the object I'm trying to map to is a TimeSpan. How can i tell FluentNHibernate to use the TimeAsTimeSpan NHibernate type, so that I don't have cast problems? >>> More