anagromataf / tripple_store

TrippleStore

TrippleStore is a simple store, that uses mnesia to persist graphs based on triples (subject, predicate, object).

Any value an be used int the tripples:

graph = [
  {:a, :b, "d"},
  {:a, :b, :c},
  {"d", :e, 100}
]

context = ["foo"]

TrippleStore.put(context, graph)

The graph can be accessed by the context:

TrippleStore.get(context)

It is also possible to select values matching a pattern in a context.

import TrippleStore.Pattern

pattern = [
  match(value(:a), value(:b), var("u")),
  match(var("u"), value(:e), var("v"))
]

fun = fn(binding) ->
  IO.inspect binding
end

TrippleStore.select(context, pattern, fun)

The function fun is called for each match of the pattern with the values matching the pattern bound to the variables.

%{"u" => "d", "v" => 100}

Installation

If available in Hex, the package can be installed by adding tripple_store to your list of dependencies in mix.exs:

def deps do
  [
    {:tripple_store, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/tripple_store.