json-to-prolog

Overview

Simple Javascript library for converting JSON objects to Prolog facts. Useful for converting, for example, results from a database query to Prolog facts.

For example, the following object:

{
  "parent": [
    { "parent": "mike", "child": "greg" },
    { "parent": "mike", "child": "marcia" },
    { "parent": "mike", "child": "peter" },
    { "parent": "mike", "child": "jan" },
    { "parent": "mike", "child": "bobby" },
    { "parent": "mike", "child": "cindy" },
    { "parent": "carol", "child": "greg" },
    { "parent": "carol", "child": "marcia" },
    { "parent": "carol", "child": "peter" },
    { "parent": "carol", "child": "jan" },
    { "parent": "carol", "child": "bobby" },
    { "parent": "carol", "child": "cindy" }
  ]
}

Will convert to:

% parent(Parent, Child).
parent(mike, greg).
parent(mike, marcia).
parent(mike, peter).
parent(mike, jan).
parent(mike, bobby).
parent(mike, cindy).
parent(carol, greg).
parent(carol, marcia).
parent(carol, peter).
parent(carol, jan).
parent(carol, bobby).
parent(carol, cindy).

The JSON object must follow the following format:

{
  "predicate1": [
    { "argument1": "someValue", ..., "argumentN": "anotherValue"},
    ...,
    { "argument1": "andAnotherValue", ..., "argumentN": "etc."}
  ],
  ...,
  "predicateN": [
    ...
  ]
}

Each property of the main object describes a predicate, and each predicate has an array (list) of facts represented as objects, with the predicate's arguments as properties.

Installation

Usage

To Do

• Complete the README.
• Add a method for converting from Prolog to JSON.