RavenDB如何刷新? [英] RavenDB how to flush?

问题描述

我正在使用嵌入式RavenDb.作为集成测试的一部分，我要检查对象是否持久.当我在对象上保存更改，然后对其进行检索时，除非我处理连接，否则将找不到该对象.

I am using RavenDb embedded. As a part of my intergration tests I want to check objects are persisted. When I SaveChanges on an object, then retrieve it, it cannot be found unless I dispose my connection.

这对我不起作用，因为没有文件返回

This does not work for me, as no files are returned

 using (var session = _dataDocumentStore.Instance.OpenSession())
 {
         session.Store(file);
         session.SaveChanges();
 }

....

using (var session = _dataDocumentStore.Instance.OpenSession() )
{
          return session.Query<File>().ToList();
}

我创建了一个Flush方法，该方法可以处理并重新创建一个可以正常工作的EmbeddableDocumentStore，但是由于这有点感觉，因此我可能会以错误的方式进行操作:

I created a Flush method which disposes and recreates a EmbeddableDocumentStore which works, but as this is somthing that feels fundamental I may be going about things the wrong way:

  public static IDocumentStore Initialize()
        {
            instance = new EmbeddableDocumentStore
            {
                DataDirectory = "App_Data/Database",
                UseEmbeddedHttpServer = true,


            };

            instance.Initialize();
            return instance;
        }

        public void Flush()
        {
            instance.Dispose();
            Initialize();

        }

如何在RavenDB中持久保存，然后检查它是否已经持久保存?关于此的任何建议都很好

How do you persist in RavenDB and then check it has been persisted? Any advice on this would be great

推荐答案

基本上，与保存和查询相比，EmbeddableDocumentStore花费更长的时间保存和索引该新数据.

Basically, the EmbeddableDocumentStore takes longer to save and Index that new data, than saving and querying.

所以当您的测试说:-

1. 存储并保存更改.
2. 加载.
3. 此负载了吗?

加载完成的速度比索引创建所需的时间快得多.

因此，就像Daniel Lang所说的那样，您需要等待过时的结果.

So, Like Daniel Lang said, you need to wait for stale results.

但是，对于您要检查的每个查询，您都必须在代码中执行此操作.所以，让我们作弊(合法):)

But, you'll have to do that for every query you wish to check, in your code. So, let's cheat (legally) :)

如果有什么问题询问文档存储，您可以通过以下方法告诉文档存储始终等待过时的结果:

Here is how you can tell your document store to ALWAYS wait for stale results, if something queries the store:

// Initialise the Store.
var documentStore = new EmbeddableDocumentStore
                    {
                        RunInMemory = true
                    };
documentStore.Initialize();

// Force query's to wait for index's to catch up. Unit Testing only :P
documentStore.RegisterListener(new NoStaleQueriesListener());

....


#region Nested type: NoStaleQueriesListener

public class NoStaleQueriesListener : IDocumentQueryListener
{
    #region Implementation of IDocumentQueryListener

    public void BeforeQueryExecuted(IDocumentQueryCustomization queryCustomization)
    {
        queryCustomization.WaitForNonStaleResults();
    }

    #endregion
}

#endregion

现在要查看实际效果，请在Github上查看 RavenOverflow .该解决方案中的Tests项目拥有您可能想要的所有爱.

Now to see this in action, check out RavenOverflow @ Github. And the Tests project in that solution has all the love you might want.

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