Temporal Relationship Tc:Tc

This is an example of an index with a Tc:Tc relationship. Current employees are indexed by their name and their current manager's current name.

public class Employees_CurrentByManager : AbstractIndexCreationTask<Employee, EmployeeWithManager>
{
    public Employees_CurrentByManager()
    {
        Map = employees =>
        
        from employee in employees
        let status = MetadataFor(employee).Value<TemporalStatus>(TemporalMetadata.RavenDocumentTemporalStatus)
        where status == TemporalStatus.Current
        let manager = LoadDocument<Employee>(employee.ManagerId)
        select new
        {
            employee.Name,
            Manager = manager.Name
        };

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