Ouerying объект внутри документа ravendb

Существует сомнение относительно того, как запрашивать или извлекать значение из объекта, хранящегося в документе, следующим образом в raven db.

class User
{
       public String Id { get; set; }
       public AccountType AccountType { get; set; }Servicetax
       public String MainAccountMobileNo { get; set; }
       public UserStatus Status { get; set; }
       public String EmailId { get; set; }
       public String DisplayName { get; set; }
       public Object User { get; set; }
}

Здесь я храню три разных типа классов в объекте User. Скажите Клиенту, Розничному торговцу и Трейдеру.

Customer

{
           public String Name{ get; set; }
           public String Address { get; set; }
           public String MobileNo { get; set; }
           public String EmailId { get; set; }
}

розничный торговец

{
           public String Name{ get; set; }
           public String Address { get; set; }
           public String MobileNo { get; set; }
           public String EmailId { get; set; }
}

трейдер

{
           public String Name{ get; set; }
           public String Address { get; set; }
           public String MobileNo { get; set; }
           public String EmailId { get; set; }
}

Now is it possible to retrieve results based on the Customer's class detail? That is now i want to retrieve All the Customers based on Address in the customer class, So how will i do it? How to typecast the object user in the query to type customer. Thanks.

The user object in the document can store any type of class's object like account info трейдер in the above image. So how can i query from the object type that cannot is not definite and changing.

var Result = sess.Query().Where(x => x.AccountType == usertype && ((AccountInfoCustomer)x.User).Customerstatus == CustomerStatus.Pending);

This is the query that's been tried and this is the exception that's been caught {"Url: \"/indexes/dynamic/UserAccountInfos?query=AccountType%253ADistributor%2520AND%2520User).Customerstatus%253APending&start=0&pageSize=128&aggregation=None\"\r\n\r\nSystem.ArgumentException: The field ')_Customerstatus' is not indexed, cannot query on fields that are not indexed\r\n at Raven.Database.Indexing.Index.IndexQueryOperation.AssertQueryDoesNotContainFieldsThatAreNotIndexes()