如何在原型文件中定义IQueryable

Question

I have

public System.Linq.IQueryable<Models.MyDbModel.ACTION> Get()
{
}

public System.Web.Http.IHttpActionResult Put(int id, 
Models.MyDbModel.ACTION ACTION)
{
}

and I need to define it in my proto file

Answer 1

IQueryable[<T>] is a very complex API that expresses deferred queries as an AST (expression tree). It certainly isn't going work in the general case of gRPC; it could potentially be expressed in a very specific implementation in a .NET-only way, but it would require someone to write all the code relating to serializing and deserializing the AST, and AFAIK that hasn't happened to date . So: today I would say: don't do that. Write a query in a regular .proto way. If you want a particular library (such as protobuf-net) to consider implementing the AST version, then that is something to discuss on that library's repo.