Cloud firestore WhereIn方法在.Net中不起作用

Question

我在.net core中使用google.cloud.firestore包，我想查询具有特定字段值的文档，该字段值存在于提供的值列表中(如sql中的IN命令(。我遇到了WhereIn方法，但总是遇到一个异常。过去几个小时我一直在努力，但没有成功
这是代码：

public async Task<List<Document>> GetListByAccountRef(List<string> accountRefs)
{
var docRef = _Firestore.Collection("documents").WhereIn("AccountRef", accountRefs);
var docsQuery = await docRef.GetSnapshotAsync();
var docs = docsQuery.Select(d => d.ConvertTo<Document>()).ToList();
return docs;
}

我在第二行得到一个异常：
var docsQuery = await docRef.GetSnapshotAsync();

这是错误消息：

Status(StatusCode=InvalidArgument, Detail="Unknown FieldFilter operator.")

这里是堆叠竞赛：

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Grpc.Core.Internal.ClientResponseStream`2.<MoveNext>d__5.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Linq.AsyncEnumerable.<ForEachAsync_>d__174`1.MoveNext() in 
D:a1sIx.NETSourceSystem.Interactive.AsyncForEach.cs:line 141
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Google.Cloud.Firestore.Query.<GetSnapshotAsync>d__54.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Docer.DAL.Repositories.DocumentRepository.<GetListByAccountRef>d__7.MoveNext() in E:Docerwebapp- 
FireStore-BranchDocer.DALRepositoriesDocumentDocumentRepository.cs:line 84
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Docer.BLL.Doc.DocumentBusiness.<GetUserDocuments>d__10.MoveNext() in E:Docerwebapp-FireStore- 
BranchDocer.BLL.DocDocumentDocumentBusiness.cs:line 84

感谢您的帮助。

Answer 1

这对我很有用(https://pieterdlinde.medium.com/netcore-and-cloud-firestore-94628943eb3c)

List<Cities> cities = new List<Cities>()
{
new Cities()
{
CityName="tests"
}
};
Query employeeQuery = fireStoreDb.Collection(nameof(Employee)).WhereIn("City", cities);
QuerySnapshot employeeQuerySnapshot = await employeeQuery.GetSnapshotAsync();

Answer 2

多亏了Jon，问题似乎来自我使用的旧版本的firestore模拟器。更新模拟器后，它运行良好。