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Monthly Downloads: 582
Programming language: Elixir
License: MIT License
Tags: JSON     Data Access     Linked Data    
Latest version: v0.3.2

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README

JSON-LD.ex

Travis Hex.pm Coverage Status

An implementation of the JSON-LD standard for Elixir and RDF.ex.

Features

  • fully conforming JSON-LD API processor
  • JSON-LD reader/writer for RDF.ex
  • tests of the JSON-LD test suite (see here for a detailed status report)

TODO

Installation

The JSON-LD.ex Hex package can be installed as usual, by adding json_ld to your list of dependencies in mix.exs:

def deps do
  [{:json_ld, "~> 0.3"}]
end

Usage

Expand a document

"""
{
 "@context":
 {
    "name": "http://xmlns.com/foaf/0.1/name",
    "homepage": {
      "@id": "http://xmlns.com/foaf/0.1/homepage",
      "@type": "@id"
    }
 },
 "name": "Manu Sporny",
 "homepage": "http://manu.sporny.org/"
}
"""
|> Jason.decode!
|> JSON.LD.expand

produces

[%{"http://xmlns.com/foaf/0.1/homepage" => [%{"@id" => "http://manu.sporny.org/"}],
   "http://xmlns.com/foaf/0.1/name" => [%{"@value" => "Manu Sporny"}]}]

Compact a document

context = Jason.decode! """
  {
    "@context": {
      "name": "http://xmlns.com/foaf/0.1/name",
      "homepage": {
        "@id": "http://xmlns.com/foaf/0.1/homepage",
        "@type": "@id"
      }
    }
  }
  """

"""
[
  {
    "http://xmlns.com/foaf/0.1/name": [ "Manu Sporny" ],
    "http://xmlns.com/foaf/0.1/homepage": [
      {
       "@id": "http://manu.sporny.org/"
      }
    ]
  }
]
"""
|> Jason.decode!
|> JSON.LD.compact(context)

produces

%{"@context" => %{
    "homepage" => %{
        "@id" => "http://xmlns.com/foaf/0.1/homepage", 
        "@type" => "@id"},
    "name" => "http://xmlns.com/foaf/0.1/name"
    },
  "homepage" => "http://manu.sporny.org/", 
  "name" => "Manu Sporny"}

RDF Reader and Writer

JSON-LD.ex can be used to serialize or deserialize RDF graphs by using it as a RDF.ex reader and writer.

dataset = JSON.LD.read_file!("file.jsonld")
JSON.LD.write_file!(dataset, "file.jsonld")

Pretty printing

Pretty printing is possible on all writer functions with all of the formatter options of Jason, the underlying JSON encoder, to which the given options are passed through.

JSON.LD.write_file!(dataset, "file.jsonld", pretty: true)
JSON.LD.write_string(dataset, "file.jsonld", pretty: [indent: "\t"])

Getting help

Contributing

see [CONTRIBUTING](CONTRIBUTING.md) for details.

(c) 2017-2020 Marcel Otto. MIT Licensed, see [LICENSE](LICENSE.md) for details.


*Note that all licence references and agreements mentioned in the JSON-LD.ex README section above are relevant to that project's source code only.