How can I inject multiple repositories in a NServicebus message handler?
- by Paco
I use the following:
public interface IRepository<T>
{
void Add(T entity);
}
public class Repository<T>
{
private readonly ISession session;
public Repository(ISession session)
{
this.session = session;
}
public void Add(T entity)
{
session.Save(entity);
}
}
public class SomeHandler : IHandleMessages<SomeMessage>
{
private readonly IRepository<EntityA> aRepository;
private readonly IRepository<EntityB> bRepository;
public SomeHandler(IRepository<EntityA> aRepository, IRepository<EntityB> bRepository)
{
this.aRepository = aRepository;
this.bRepository = bRepository;
}
public void Handle(SomeMessage message)
{
aRepository.Add(new A(message.Property);
bRepository.Add(new B(message.Property);
}
}
public class MessageEndPoint : IConfigureThisEndpoint, AsA_Server, IWantCustomInitialization
{
public void Init()
{
ObjectFactory.Configure(config =>
{
config.For<ISession>()
.CacheBy(InstanceScope.ThreadLocal)
.TheDefault.Is.ConstructedBy(ctx => ctx.GetInstance<ISessionFactory>().OpenSession());
config.ForRequestedType(typeof(IRepository<>))
.TheDefaultIsConcreteType(typeof(Repository<>));
}
}
My problem with the threadlocal storage is, is that the same session is used during the whole application thread. I discovered this when I saw the first level cache wasn't cleared. What I want is using a new session instance, before each call to IHandleMessages<.Handle.
How can I do this with structuremap? Do I have to create a message module?
