Tutorial

This tutorial will show you how to use RDF-Ext.

Example Workspace

All examples of this tutorial are available as Gitpod workspace:

Open in Gitpod

Basics

Let's start with some basics.

Example Dataset

We will use the housemd example dataset in this tutorial. The following lines show how to load it:

import housemd from 'housemd'
import rdf from 'rdf-ext'

// import the housemd RDF/JS Quads and use RDF-Ext as factory
const quads = housemd({ factory: rdf })

// load the quads into a RDF/JS dataset
const dataset = rdf.dataset(quads)

// dump the content of the dataset to the console
console.log(dataset.toCanonical())

N-Triples

Converting Term, Quads, or Dataset to N-Triples string can be helpful for debugging. The example shows how to do it:

import housemd from 'housemd'
import rdf from 'rdf-ext'

// import the housemd RDF/JS Quads and use RDF-Ext as factory
const quads = housemd({ factory: rdf })

// load the quads into a RDF/JS dataset
const dataset = rdf.dataset(quads)

// dump the content of the dataset to the console
console.log(dataset.toCanonical())

Browser

A module bundler is required to build a Web application with RDF-Ext. Vite is a modern, fast, and very popular one, which we will use in this tutorial.

Dependencies

First, you need to install vite. The following command will install it and add it as a developer dependency:

npm install --save-dev `vite`

Bundle

Now you can run the bundler in developer mode. It will start a server and bundles the code on the fly:

vite dev examples/browser

Run the following command for a production build:

vite build --outDir=../../dist examples/browser