X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fbasic_rg%2FbrgEnvironment.ml;h=5a4cf3cb6d0875cbda2ea881e68fb4c0160ba0d4;hb=34c2ba63c8eb5fccfd9a1fb8ac1df5895c8b58b3;hp=fb4243c74f024bb979dd2b1a941ecbdc396d9d73;hpb=41bf338d7e638ebb5d97e525055bff05b1f0f045;p=helm.git

diff --git a/helm/software/lambda-delta/basic_rg/brgEnvironment.ml b/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
index fb4243c74..5a4cf3cb6 100644
--- a/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
+++ b/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
@@ -10,26 +10,25 @@
       V_______________________________________________________________ *)
 
 module U = NUri
-module L = Log
 module H = U.UriHash
+module Y = Entity
 module B = Brg
 
-exception ObjectNotFound of B.message
-
 let hsize = 7000 
 let env = H.create hsize
-let entry = ref 0
 
 (* Internal functions *******************************************************)
 
-let error uri = raise (ObjectNotFound (L.items1 (U.string_of_uri uri)))
+let get_age = 
+   let age = ref 0 in
+   fun () -> incr age; !age
 
 (* Interface functions ******************************************************)
 
-let set_obj f obj =
-   let _, uri, b = obj in
-   let obj = !entry, uri, b in
-   incr entry; H.add env uri obj; f obj
+let set_entity f (a, uri, b) =
+   let age = get_age () in
+   let entity = (Y.Apix age :: a), uri, b in
+   H.add env uri entity; f entity
 
-let get_obj f uri =
-   try f (H.find env uri) with Not_found -> error uri
+let get_entity err f uri =
+   try f (H.find env uri) with Not_found -> err ()