WebAPIとRavenDBでの基本的なセッション処理

Question

これをベースAPIControllerとして使用すると、主に、私は上のセッションオブジェクトのライフサイクルを管理するために、アクションフィルタ属性を使用して好む...対私は他の場所で見てきたExecuteAsync方法、

using System; 
using System.Net.Http; 
using System.Threading; 
using System.Threading.Tasks; 
using System.Web.Http; 
using System.Web.Http.Controllers; 
using Raven.Client; 
using Raven.Client.Document; 

public abstract class RavenDbController : ApiController 
{ 
    private IDocumentStore _documentStore; 

    public IDocumentStore Store 
    { 
     get { return _documentStore ?? (_documentStore = LazyDocStore.Value); } 
     set { _documentStore = value; } 
    } 

    protected override void Initialize(HttpControllerContext controllerContext) 
    { 
     Session = Store.OpenSession(); 
     base.Initialize(controllerContext); 
    } 

    protected override void Dispose(bool disposing) 
    { 
     using (Session) 
     { 
      Session.SaveChanges(); 
     } 
    } 

    public IDocumentSession Session { get; set; } 

} 

Answer 1

を配置でのSaveChangesの取り扱いについて興味イムベースAPIコントローラ。

public class RavenSessionManagementAttribute : ActionFilterAttribute 
{ 
    private readonly IDocumentStore store; 

    public RavenSessionManagementAttribute(IDocumentStore store) 
    { 
     if (store == null) throw new ArgumentNullException("store");  
     this.store = store; 
    } 

    public override void OnActionExecuting(HttpActionContext actionContext) 
    { 
     var controller = actionContext.ControllerContext.Controller as AbstractApiController; 
     if (controller == null) 
      return; 

     // Can be set explicitly in unit testing 
     if (controller.RavenSession != null) 
      return; 

     controller.RavenSession = store.OpenSession(); 
     controller.RavenSession.Advanced.UseOptimisticConcurrency = true; 
    } 

    public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext) 
    { 
     var controller = actionExecutedContext.ActionContext.ControllerContext.Controller as AbstractApiController; 
     if (controller == null) 
      return; 

     using (var session = controller.RavenSession) 
     { 
      if (session == null) 
       return; 

      if (actionExecutedContext.Exception != null) 
      { 
       session.SaveChanges(); 
      } 
     } 
    } 
} 

FilterConfig.cs：

public class FilterConfig 
    { 
     public static void RegisterGlobalFilters(HttpFilterCollection filters) 
     { 
      filters.Add(new RavenSessionManagementAttribute(DocumentStoreHolder.Store)); 
     } 
    } 

AbstractApiController.cs：このアプローチを実証し、次のコードを参照してください

public abstract class AbstractApiController : ApiController 
    { 
     public IDocumentSession RavenSession { get; set; } 
    }