DataBase Handle
Holds state regarding position in the database
| DataBaseHandle ()
| DataBaseHandle |
| DataBaseHandle (bool v, uint32_t last_entry)
| DataBaseHandle |
| uint32_t position ()
| position |
[const]
| uint32_t last ()
| last |
[const]
| void advance (bool& last)
| advance |
| bool valid ()
| valid |
[const]
| void invalidate ()
| invalidate |