2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
18 let env = H.create hsize
20 (* Internal functions *******************************************************)
24 fun () -> incr age; !age
26 (* Interface functions ******************************************************)
28 let set_entity f (a, uri, b) =
29 let age = get_age () in
30 let entity = (Y.Apix age :: a), uri, b in
31 H.add env uri entity; f entity
33 let get_entity err f uri =
34 try f (H.find env uri) with Not_found -> err ()