如何解决与NHibernateSagaPersister的自动布线冲突？ [英] How do I resolve an autowire conflict with NHibernateSagaPersister?

问题描述

我正在尝试连接我的第一个Saga，并且无法让接收端点正确处理启动消息。我得到以下异常：

I'm trying to wire up my first Saga, and have been unable to get the receiving endpoint to handle start message properly. I get the following exception:

SagaMessageHandler处理
消息失败。
Spring.Objects.Factory.UnsatisfiedDependencyException：
创建名为$ b的对象时出错$ b'NServiceBus.Sagas.Impl.SagaMessageHandler'
：不满意的依赖表达式
通过对象属性' Persister'：
有两个对象类型
[NServiceBus.Saga.ISagaPersister]为
autowire按类型，当应该
只有1能够到
autowire属性
对象的Persister
'NServiceBus.Sagas.Impl.SagaMessageHandler'。

SagaMessageHandler Failed handling message. Spring.Objects.Factory.UnsatisfiedDependencyException: Error creating object with name 'NServiceBus.Sagas.Impl.SagaMessageHandler' : Unsatisfied dependency expressed through object property 'Persister': There are 2 objects of Type [NServiceBus.Saga.ISagaPersister] for autowire by type, when there should have been just 1 to be able to autowire property 'Persister' of object 'NServiceBus.Sagas.Impl.SagaMessageHandler'.

我猜，内存持久性和NHibernateSagaPersister是冲突，但我不知道如何解决这个问题。我的配置是：

I'm guessing that both the in-memory persister and NHibernateSagaPersister are conflicting, but I can't figure out how to resolve this. My configuration is this:

public class SubscriberEndpointConfig : IWantCustomInitialization, IConfigureThisEndpoint
{      
    public void Init()
    {
        _logger.Info("Subscriber is initializing..");

        Configure.With()                 
            .DefaultBuilder()
            .XmlSerializer()
            .MsmqTransport().IsTransactional(true).IsolationLevel(IsolationLevel.ReadCommitted).PurgeOnStartup(false)
            .UnicastBus().LoadMessageHandlers(First<GridInterceptingMessageHandler>.Then<SagaMessageHandler>())  
            .Sagas()
            .NHibernateSagaPersister()
            .Log4Net();

    }
}

如果我删除LoadMessageHandlers ，错误消失，但当然我的处理程序从未调用。任何想法在这里错了什么？当我在生产配置文件中使用AsA_Server时，saga工作正常，没有自定义初始化，但是我需要使用它为其他原因。

If I remove the LoadMessageHandlers(), the error disappears but of course my handler is never invoked. Any ideas what's wrong here? The saga works properly when I am using AsA_Server in the production profile, without the custom initialization, but I need to use that for other reasons.

推荐答案

nservicebus配置文件正在为您配置持久性配置（http://www.nservicebus.com/Profiles.aspx）

The nservicebus profiles are configuring the persister for you(http://www.nservicebus.com/Profiles.aspx)

NServiceBus.Lite（默认）= InMemory

NServiceBus.Lite (default) = InMemory

NServiceBus.Integration = NHibernate + Sqlite

NServiceBus.Integration = NHibernate + Sqlite

NServiceBus.Production = NHibernate

NServiceBus.Production = NHibernate

所以在你的情况下，你可以删除对NHibernateSagaPersister（）的调用，让配置文件工作。

So in your case you can remove the call to NHibernateSagaPersister() and let the profiles do it's work.

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