@ontologies/core v2.0.3

Ontologies

Never manage a namespace object map again, scrap typo's for well-known ontologies. Like DefinitelyTyped, but for ontologies.

Usage

@ontologies/core

This is a special package which provides a few parts;

• A default export which is a proxy to the currently assigned global Data Factory.
• A named export globalSymbol which is a symbol to identify the Data Factory used by the other @ontologies/ packages to create rdf objects with.
• A named export setup which binds the PlainFactory to the global scope under the globalSymbol identifier if it was previously undefined.
• A named export globalFactory which should be a reference to the last .
• A named export PlainFactory which implements the Data Factory interface (with slight adjustments) in a functional way (e.g. no instance methods, but provides an equals function on the factory itself).
• A named export createNS which you can use to create namespaces with which ease NamedNode creation using the global factory.
• A small set of types useful for working with RDF.

@ontologies/*

The other packages are generated from their respective ontologies, providing client applications with importable symbols and a named export ns with which custom additional terms can be created within the given namespace.

Usage

With named exports

import { name } from '@ontologies/schema'

console.log(name) // http://schema.org/name

With default export

import schema from '@ontologies/schema'

console.log(schema.name) // http://schema.org/name

Custom terms

import { ns } from '@ontologies/schema'

console.log(ns('extension')) // http://schema.org/extension

Non-js symbols

Dashes in term names are replaced with underscores. The default export contains both the verbatim and the underscored values.

import dcterms, { ISO639_2 } from '@ontologies'

console.log(ISO639_2) // NamedNode(http://purl.org/dc/terms/ISO639-2)
console.log(dcterms.ISO639_2) // NamedNode(http://purl.org/dc/terms/ISO639-2)
console.log(dcterms['ISO639-2']) // NamedNode(http://purl.org/dc/terms/ISO639-2)

Collisions with ES reserved keywords

No reserved object property keys exist for JavaScript object literals, so when using the default export, terms can be accessed directly:

import schema from '@ontologies/schema'

console.log(schema.yield) // NamedNode(http://schema.org/name)

When using the named exports, if a term collides with an ES 5/6 reserved keyword or certain built-in classes, the term is prepended with the symbol of the ontology:

import { name, schemayield } from '@ontologies/schema'

// 'name' is not a JS reserved keyword
console.log(name.value) // "http://schema.org/name"
// 'yield' is a reserved keyword, so the package name is prepended to the js identifier.
console.log(schemayield.value) // "http://schema.org/yield"