package datalog

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in-package search v0.2.0

An in-memory datalog implementation for OCaml

Install

md5=4a2d12d630a5edd694968675a84a3ef5

sha512=685c0e186705837cb3ac66df6e8011d9f6a9629484b3a813b767df95348d5a41f37301f3e199ed6c91a42a87d1563e8355377269176785b123eb297a5ad022d7

module Data : Hashtbl.HashedType

type t

A set of term->data bindings, for efficient retrieval by unification

val empty : unit -> t

new, empty index

val copy : t -> t

Recursive copy of the index

val clear : t -> unit

val add : t -> T.t -> Data.t -> t

Add the term->data binding. This modifies the index!

val remove : t -> T.t -> Data.t -> t

Remove the term->data binding. This modifies the index!

val generalizations : 
  ?oc:bool ->
  t ->
  scope ->
  T.t ->
  scope ->
  (Data.t -> Subst.t -> unit) ->
  unit

Retrieve data associated with terms that are a generalization of the given query term

val unify : 
  ?oc:bool ->
  t ->
  scope ->
  T.t ->
  scope ->
  (Data.t -> Subst.t -> unit) ->
  unit

Retrieve data associated with terms that unify with the given query term

val iter : t -> (T.t -> Data.t -> unit) -> unit

Iterate on bindings

val size : t -> int

Number of bindings

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