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我正在与从视图创建的 DataEntity 斗争。该场景是 PowerBI 将通过 d365 实例中的“/data”url 使用实体。当请求实体并且应该生成 json 时，什么也没有发生。当我从浏览器打开 WebDeveloperTools 并请求该实体的 url 时，出现以下错误：

    {
  "error":{
    "code":"","message":"An error has occurred.","innererror":{
      "message":"The given model does not contain the type 'Microsoft.Dynamics.Ax.Xpp.EdtArray`1[System.Decimal]'.",
      "type":"System.InvalidOperationException",
      "stacktrace":"   at System.Web.OData.Formatter.Serialization.ODataSerializerContext.GetEdmType(Object instance, Type type)\r\n   
                       at System.Web.OData.Formatter.Serialization.ODataEntityTypeSerializer.CreateStructuralProperty(IEdmStructuralProperty structuralProperty, EntityInstanceContext entityInstanceContext)\r\n   
                       at System.Web.OData.Formatter.Serialization.ODataEntityTypeSerializer.CreateStructuralPropertyBag(IEnumerable`1 structuralProperties, EntityInstanceContext entityInstanceContext)\r\n   
                       at System.Web.OData.Formatter.Serialization.ODataEntityTypeSerializer.CreateEntry(SelectExpandNode selectExpandNode, EntityInstanceContext entityInstanceContext)\r\n   
                       at System.Web.OData.Formatter.Serialization.ODataEntityTypeSerializer.WriteEntry(Object graph, ODataWriter writer, ODataSerializerContext writeContext)\r\n   
                       at System.Web.OData.Formatter.Serialization.ODataFeedSerializer.WriteFeed(IEnumerable enumerable, IEdmTypeReference feedType, ODataWriter writer, ODataSerializerContext writeContext)\r\n   
                       at System.Web.OData.Formatter.ODataMediaTypeFormatter.WriteToStream(Type type, Object value, Stream writeStream, HttpContent content, HttpContentHeaders contentHeaders)\r\n   
                       at System.Web.OData.Formatter.ODataMediaTypeFormatter.WriteToStreamAsync(Type type, Object value, Stream writeStream, HttpContent content, TransportContext transportContext, CancellationToken cancellationToken)\r\n
                       --- End of stack trace from previous location where exception was thrown ---\r\n   
                       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   
                       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Tracing.ITraceWriterExtensions.<TraceBeginEndAsyncCore>d__24.MoveNext()\r\n
                       --- End of stack trace from previous location where exception was thrown ---\r\n   
                       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   
                       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Owin.HttpMessageHandlerAdapter.<BufferResponseContentAsync>d__13.MoveNext()"
    }
  }
}

这是什么意思，更重要的是我怎样才能避免这种情况？

数据源是一个名为“TSTimesheetSummaryLine”的视图。我复制了另一个实体，从中删除了所有内容，将视图作为数据源删除，然后将所有字段从数据源拖放到实体的字段

我注意到视图确实包含一个实数数组（小时）

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1 回答 1

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显然，实数数组可以在视图中使用，但不能在实体中使用。导致此异常的字段是“小时”，它存储 7 个实际值（一周中的每一天）。

解决方案：

我将dataEntity上“小时”的访问修饰符设置为“内部”，为每个值添加字段（“Hours1”到“Hours7”），并从“OnPostingLoad”-EventHandler中的数组中设置这些字段的值数据实体

于 2019-03-22T10:07:14.893 回答