工作模式的一个asp.net MVC应用程序中的单元 [英] The unit of work pattern within a asp.net mvc application
问题描述
我一直在寻找这个excellant <一个href=\"http://blogs.hibernatingrhinos.com/nhibernate/archive/2008/04/10/nhibernate-and-the-unit-of-work-pattern.aspx\"相对=nofollow>博客名为NHibernate和工作模式的单位,并有关于在asp.net mvc的项目中使用UnitOfWork.Start的最佳场所的问题。
I have been looking at this excellant blog titled "NHibernate and the Unit of Work Pattern" and have a question regarding the best place to use UnitOfWork.Start in a asp.net mvc project.
我的SLN分为以下项目: -
My SLN is broken down into the following projects:-
MVC project
Repository
NHibernateUnitOfWork
我有一个接口: -
I have an interface:-
public interface INameRepository
...
IList<Name> GetByOrigin(int OriginId)
...
我有一个具体的实施
I have a concrete implementation
public class NameRepository : INameRepository
...
public IList<Name> GetByOrigin(int OriginId) {
using (UnitOfWork.Start()) {
var query = session.Linq<...
return query;
}
}
...
我的问题是我总结我的所有的存储库中的所有方法,使用(UnitOfWork.Start()),或是否有更好的方法?
My question is do I wrap all my methods inside all my repositories with using(UnitOfWork.Start()) or is there a better approach?
我使用NHibernate,asp.net mvc的。
I am using nHibernate, asp.net mvc.
推荐答案
使用工作模式的单位,你不把所有的数据访问方法,工作独立的单元。您可以使用工作单位周围需要做的,这是在大多数情况下,在Web应用程序中的WebRequest整部作品。这个想法是,一个请求可能失败,或成功。当一个请求过程中添加2项数据库中,既要增加,还是不行。不只是其中之一。在大多数情况下,最简单的方法在MVC开始工作单位(或其他网络)的应用是在Global.asax
With the unit of work pattern, you don't put every dataaccess method in a separate unit of work. You use the unit of work around the whole work that needs to be done, which is in most cases in a web application a webrequest. The idea is that a request can fail, or succeed. When you add 2 items to the database during one request, the should be both added, or not. Not just one of them. In most cases, the easiest way to start a unit of work in a mvc (or other web) application is in the begin and end request methods of the global.asax
class Global
{
BeginRequest()
{
servicelocater.get<unitofwork>().start();
}
EndRequest()
{
var unit = servicelocater.Get<Unitofwork>();
try
{
unit.commit();
}
catch
{
unit.rollback();
throw;
}
}
}
class Repository<T>
{
public Repository(INHibernateUnitofwork unitofwork)
{
this.unitofwork = unitofwork;
}
public void Add(T entity)
{
unitofwork.session.save(entity);
}
}
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