RavenDB. How to load document with only 5 items from inner collection?

问题

Here is a document in the store:

{
    "Name": "Hibernating Rhinos", 
    "Employees": [
        { "Name": "Ayende" },
        { "Name": "John" },
        { "Name": "Bob" },
        { "Name": "Tom" },
        { "Name": "Lane" },
        { "Name": "Bill" },
        { "Name": "Tad" }
     ]
}

It is easy to load this document with or without Employees collection, but how to load only part of inner collection? For instance, first 5 items:

{
    "Name": "Hibernating Rhinos", 
    "Employees": [
        { "Name": "Ayende" },
        { "Name": "John" },
        { "Name": "Bob" },
        { "Name": "Tom" },
        { "Name": "Lane" }
     ]
}

回答1:

Not directly, not.

What you can do is define the following index:

from company in docs.Companies
from emp in company.Employees
select new { Compnany = company.Name, Employee = emp }

You can then query the index for the first five employees

回答2:

You can use Live Projections feature of RavenDB. Put this query in TransformResults function of your index: I assume that your document name is Company.

TransformResults = (database, companies) => from c in companies
                                        select new {Company=c,Employees=c.Employees.Take(5)};

来源：https://stackoverflow.com/questions/3379357/ravendb-how-to-load-document-with-only-5-items-from-inner-collection