更新到最新的RavenDB后，我收到此错误：
[InvalidCastException：无法将“Index_Auto_2fDocuments_2fByCreationDateTimeAndPublishTimeSortByCreationDateTimePublishTime”类型的对象强制转换为“Raven.Database.Linq.AbstractViewGenerator” . ] c：\ Builds \ RavenDB-Stable \ Raven.Database中的Raven.Database.Linq.DynamicViewCompiler.GenerateInstance（） \ Linq \ DynamicViewCompiler.cs：598 Raven.Database.Storage.IndexDefinitionStorage.AddAndCompileIndex（IndexDefinition indexDefinition）在c：\ Builds \ RavenDB-Stable \ Raven.Database \ Storage \ IndexDefinitionStorage.cs：233 Raven.Database.DocumentDatabase.PutIndex（字符串名称，IndexDefinition定义）在c：\ Builds \ RavenDB-Stable中的c：\ Builds \ RavenDB-Stable \ Raven.Database \ DocumentDatabase.cs：1207 Raven.Database.Queries.DynamicQueryRunner.CreateAutoIndex（String permanentIndexName，Func1 createDefinition） \ Raven.Database \ Queries \ DynamicQueryRunner.cs：170中的Raven.Database.Queries.DynamicQueryRunner.GetAppropriateIndexToQuery（String entityName，IndexQuery query，DynamicQueryMapping map）在c：\ Builds \ Raven中DB-Stable \ Raven.Database \ Queries \ DynamicQueryRunner.cs：158 Raven.Database.Queries.DynamicQueryRunner.ExecuteDynamicQuery（String entityName，IndexQuery query）在c：\ Builds \ RavenDB-Stable \ Raven.Database \ Queries \ DynamicQueryRunner.cs中：32 Raven.Client.Embedded.EmbeddedDatabaseCommands.Query（String index，IndexQuery query，String [] includes，Boolean metadataOnly，Boolean indexEntriesOnly）in c：\ Builds \ RavenDB-Stable \ Raven.Client.Embedded \ EmbeddedDatabaseCommands.cs：481 C：\ Builds中的Raven.Client.Document.AbstractDocumentQuery2.ExecuteActualQuery（）位于c：\ Builds \ RavenDB-Stable \ Raven.Client.Lightweight \ Document \ AbstractDocumentQuery.cs：664 Raven.Client.Document.AbstractDocumentQuery2.get_QueryResult（） \ RavenDB-Stable \ Raven.Client.Lightweight \ Document \ AbstractDocumentQuery.cs：633 Raven.Client.Linq.RavenQueryProviderProcessor1.ExecuteQuery（）in c：\ Builds \ RavenDB-Stable \ Raven.Client.Lightweight \ Linq \ RavenQueryProviderProcessor.cs ：c99中的1499 Raven.Client.Linq.RavenQueryInspector1.GetEnumerator（） ds \ RavenDB-Stable \ Raven.Client.Lightweight \ Linq \ RavenQueryInspector.cs：105 System.Collections.Generic.List1..ctor（IEnumerable1 collection）446 System.Linq.Enumerable.ToList（IEnumerable1 source）80 Kernel.DocumentRavenProvider . c：\ Dev \ Repos \ Git \ Writer \ Kernel \ DocumentRavenProvider.cs中的GetDocuments（Int32计数）：C：\ Dev \ Repos \ Git \ Writer \ Kernel \ DocumentManager.cs中的85 Kernel.DocumentManager.GetDocuments（Int32计数） ：46 C：\ Dev \ Repos \ Git \ Writer \ Blog \ Controllers \ DocumentController.cs中的Blog.Controllers.DocumentController.Index（）：18 lambda_method（Closure，ControllerBase，Object []）79 System.Web.Mvc.ReflectedActionDescriptor .Execute（ControllerContext controllerContext，IDictionary2 parameters）261 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext controllerContext，ActionDescriptor actionDescriptor，IDictionary2 parameters）39 System.Web.Mvc.Async . <> c_DisplayClass42.b_41（）34 System.Web . Mvc.Async . <> c_DisplayClass39.b_33（）124 System.Web.Mvc.Async . <> c_Display Class4f.b_49（）838923 System.Web.Mvc.Async . <> c_DisplayClass37.b_36（IAsyncResult asyncResult）15 System.Web.Mvc.Async . <> c_DisplayClass2a.b_20（）33 System.Web.Mvc.Async . <> c_DisplayClass25.b_22（IAsyncResult asyncResult）839508 System.Web.Mvc . <> c_DisplayClass1d.b_18（IAsyncResult asyncResult）28 System.Web.Mvc.Async . <> c_DisplayClass4.b_3（IAsyncResult ar）15 System.Web.Mvc.Controller . EndExecuteCore（IAsyncResult asyncResult）65 System.Web.Mvc.Async . <> c_DisplayClass4.b_3（IAsyncResult ar）15 System.Web.Mvc.Controller.EndExecute（IAsyncResult asyncResult）51 System.Web.Mvc . <> c_DisplayClass8.b_3（ IAsyncResult asyncResult）42 System.Web.Mvc.Async . <> c_DisplayClass4.b_3（IAsyncResult ar）15 System.Web.Mvc.MvcHandler.EndProcessRequest（IAsyncResult asyncResult）51 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep . 执行（）606 System.Web.HttpApplication.ExecuteStep（IExecutionStep step，Boolean＆completedSynchronously）288
执行此查询时
documents = session.Query<Model.Document>().Where(d => d.PublishTime <= DateTime.Now)
.OrderByDescending(document=>document.CreationDateTime).Take(count)
我正在运行嵌入式数据库，我试过
-
删除数据库并重启asp.net应用程序 . Same error .
-
向数据库添加内容，然后重新启动并加载asp.net应用程序 . Same error .
在更新之前，一切正常 . 我有很多单元测试，我测试了一个内存Raven数据库 . 这里保存和检索工作正常，所以也许它与json被解析有关？
我有这个控制器调用底层的RavenDB保存逻辑：
// POST api/document
public async System.Threading.Tasks.Task<Model.Document> Post([FromBody]Model.Document document)
{
var savedDocument = await _documentManager.Save(document);
var hubConnection = new Microsoft.AspNet.SignalR.Client.Hubs.HubConnection(BaseSiteUrl);
var hub = hubConnection.CreateHubProxy("DocumentHub");
hubConnection.Start().Wait();
hub.Invoke("NewArticle", savedDocument.Id).Wait();
return document;
}
我的模型看起来像这样
public class Document
{
public int Id { get; set; }
public string Headline { get; set; }
public string Text { get; set; }
public DateTime CreationDateTime { get; set; }
public DateTime PublishTime { get; set; }
public HashSet<string> Tags { get; private set; }
public int CategoryId { get; set; }
[Raven.Imports.Newtonsoft.Json.JsonIgnore]
public Model.Category Category { get; private set; }
public Document()
{
CreationDateTime = DateTime.Now;
Tags = new HashSet<string>();
}
public Document(string headline, string text, DateTime creationTime, DateTime publishTime)
{
Headline = headline;
Text = text;
CreationDateTime = creationTime;
PublishTime = publishTime;
Tags = new HashSet<string>();
}
public string GetCategoryName()
{
string name = String.Empty;
if (this.Category != null)
{
name = this.Category.Name;
}
return name;
}
public void SetCategory(Model.Category category)
{
if (category != null)
{
this.Category = category;
this.CategoryId = category.Id;
}
}
public string GetTeaser()
{
string teaser = Text;
if (Text.Count() > 250)
teaser = Text.Substring(0, 250) + " ...";
return teaser;
}
public string GetCommaSeperatedTagsString()
{
var tags = new StringBuilder();
int i = 0;
foreach (string tag in Tags)
{
if (!String.IsNullOrEmpty(tag))
{
tags.Append(tag);
if (i < Tags.Count - 1)
{
tags.Append(",");
}
}
i++;
}
return tags.ToString();
}
public string GetSpaceSeperatedTagsString()
{
var tags = new StringBuilder();
int i = 0;
foreach (string tag in Tags)
{
if (!String.IsNullOrEmpty(tag))
{
tags.Append(tag);
if (i < Tags.Count - 1)
{
tags.Append(" ");
}
}
i++;
}
return tags.ToString();
}
public void AddTagsString(string tagsString)
{
string[] tagsSplitted = tagsString.Split(',');
foreach (var tag in tagsSplitted)
{
if (!String.IsNullOrEmpty(tag))
{
Tags.Add(tag);
}
}
}
public string GetTimeString()
{
System.TimeSpan span = DateTime.Now.Subtract(this.CreationDateTime);
string time = "lige udgivet";
if (span.Days > 0)
{
if (span.Days > 1)
time = span.Days + " dage siden";
else
time = "en dag siden";
}
else if (span.Hours > 0)
{
if (span.Hours > 1)
time = span.Hours + " timer siden";
else
time = "en time siden";
}
else if (span.Minutes > 0)
{
if (span.Minutes > 1)
time = span.Minutes + " minutter siden.";
else
time = "et minut siden.";
}
else if (span.Seconds > 0)
{
time = "lige udgivet";
}
else if (span.Milliseconds > 0)
{
time = "lige udgivet";
}
return time;
}
}
public class Category
{
public string Name { get; set; }
public int Id { get; set; }
}
但是，如果我打破上面的控制器方法，json转换得很好 . 这里没有错误 .
RavenDB是否改变了DateTime的处理方式？有没有人知道一个解决方案，或一篇能指出我正确方向的文章 .
Update 我只能在尝试查询数据库并获取文档时看到这种情况 . 这个在空数据库和带有文档的数据库上进行测试 . 我可以看到save方法工作得很好 .
1 回答
通过从nuget卸载Raven.Embedded并重新安装来解决此问题 .