rdf-query

What is this?

Initially this library is designed to make RDF queries to Solid PODs, but it can be easily extended with the methods that it already has. I encourage you to participate on its growth and spread. Let's make rdf-query the main RDF library and unify all RDF related staff in it!

Usage

let rdfq = require("rdf-query");

Or

import {...} from "rdf-query";

Reference

Method	Description
getName(profile)	Returns the name of the profile passed as a parameter
getImage(profile)	Returns the URI of the image of the specified profile
getFriends(profile)	Returns an array of URIs, that represent the list of friends of the profile specified as a parameter
getInfoFromProfile(profile)	Returns the name, friends (as URIs), and image (as URI) from the specified profile
getMultipleValuesFromFoaf(profile, field)	Returns an array of values from the foaf namespace
getSingleValueFromFoaf(profile, field)	Returns an object containing the value from the foaf namespace
getSingleValueFromVcard(profile, field)	Returns an object containing the value from the vcard namespace
getMultipleValuesFromNamespace(profile, field, ns)	Returns an array containing objects with the information of the field you requested, from the specified namespace
getSingleValueFromNamespace(profile, field, ns)	Returns an object containing the value of the field you requested, from the specified namespace

Example usage

Getting the name of a user

This would be the code to get the name of a user, given his/her webId

const rdf = require("rdf-query");
 
rdf
  .getName("https://timbl.solid.community/profile/card#me")
  .then(name => console.log(name.value));

Which will give us:

"Tim Berners-Lee (solid.community)";

Getting friends of a user

To get the URIs of the friends of a user, we will use this code:

rdf
  .getFriends("https://timbl.solid.community/profile/card#me")
  .then(friends => {
    friends.map(friend => {
      console.log(friend.object.value);
    });
  });

Which returns:

"http://www.w3.org/People/Berners-Lee/card#i";
"https://angelo.veltens.org/profile/card#me";
"https://gaia.solid.community/";
"https://jollyorc.solid.community/profile/card#me";
"https://melvin.solid.community/profile/card#me";
"https://nada.solid.community/profile/card#me";
"https://spoggy.solid.community/profile/card#me";