Get Object Name from database_id, file_id, Page_id

I have Buffer Pool Extension enabled and want to get the object name for all pages shown in sys.dm_os_buffer_descriptors.When a page is in the BPE and no longer in the Bufferpool, the normal way of working this out via allocation_unit_id cannot be used as that column is null as shown below.[img]http://i61.tinypic.com/241qqfl.png[/img]Does anyone know a SQL query that can get to the object_id using just the database_id, file_id and page_id WITHOUT using DBCC PAGE. I need to get a result set that includes the object_id for every row in sys.dm_os_buffer_descriptors.