Temporal Relationship Tr:Nt

This is an example of an index with a Tr:NT relationship. All revisions of employees are indexed by their name and department name.

public class Employees_ByDepartment : AbstractIndexCreationTask<Employee, EmployeeWithDepartment>
{
    public Employees_ByDepartment()
    {
        Map = employees => 
        
        from employee in employees
        let department = LoadDocument<Department>(employee.DepartmentId)
        select new
        {
           employee.Name,
           Department = department.Name
        };

        // The department field is stored so we can return it in a projection.
        Store(x => x.Department, FieldStorage.Yes);
    }
}