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GitHub - rdf-elixir/jsonld-ex: An implementation of JSON-LD for Elixir
An implementation of JSON-LD for Elixir. Contribute to rdf-elixir/jsonld-ex development by creating an account on GitHub.
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GitHub - rdf-elixir/jsonld-ex: An implementation of JSON-LD for Elixir

GitHub - rdf-elixir/jsonld-ex: An implementation of JSON-LD for Elixir

JSON-LD.ex

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

The API documentation can be found here. For a guide and more information about RDF.ex and it's related projects, go to https://rdf-elixir.dev.

Features

  • fully conforming JSON-LD 1.0 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")

When a context is provided via the :context option (as a map, a RDF.PropertyMap or a string with a URL to a remote context), the document gets automatically compacted on serialization.

JSON.LD.write_file!(dataset, "file.jsonld", context: %{ex: "https://example.com/"})
JSON.LD.write_file!(dataset, "file.jsonld", context: "https://schema.org/")

Pretty printing

Pretty printing is possible on all writer functions with all 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"])

Contributing

see CONTRIBUTING for details.

Consulting

If you need help with your Elixir and Linked Data projects, just contact NinjaConcept via [email protected].

License and Copyright

(c) 2017-present Marcel Otto. MIT Licensed, see LICENSE for details.

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