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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Francois Rouaix, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* Automatique. Distributed only by permission. *)
(* *)
(***********************************************************************)
(* $Id *)
(* Module [Db]: interface to the DB databases of type btree. Cf dbopen(3) *)
(* this collides with Unix *)
type open_flag =
O_CREAT
| O_EXCL
| O_RDONLY
| O_RDWR
| O_TRUNC
type routine_flag =
R_CURSOR
| R_FIRST
| R_LAST
| R_NEXT
| R_NOOVERWRITE
| R_PREV
| R_SETCURSOR
(* All other fields have default values *)
type btree_flag =
Duplicates (* means R_DUP *)
| Cachesize of int
type file_perm = int
exception DB_error of string
(* Raised by the following functions when an error is encountered. *)
type key = string
type data = string
type t
(* Raw access *)
external dbopen : string -> open_flag list -> file_perm -> btree_flag list -> t
= "caml_db_open"
(* [dbopen file flags mode] *)
(* The common subset of available primitives *)
external close : t -> unit
= "caml_db_close"
external del : t -> key -> routine_flag list -> unit
= "caml_db_del"
(* raise Not_found if the key was not in the file *)
external get : t -> key -> routine_flag list -> data
= "caml_db_get"
(* raise Not_found if the key was not in the file *)
external put : t -> key -> data -> routine_flag list -> unit
= "caml_db_put"
external seq : t -> key -> routine_flag list -> (key * data)
= "caml_db_seq"
external sync : t -> unit
= "caml_db_sync"
val add : t -> key -> data -> unit
val find : t -> key -> data
val find_all : t -> key -> data list
val remove : t -> key -> unit
val iter : (string -> string -> unit) -> t -> unit
|
