DjangoRDF

DjangoRDF is a Django-based RDF framework that enables structured management, querying, and serialization of RDF data within Django applications. It provides tools to integrate RDF triple stores, perform SPARQL queries, and facilitate Linked Data publishing.

Features of DjangoRDF

  • Django ORM-style RDF models: Manage RDF data like Django models.

  • SPARQL Query Integration: Run queries against linked data.

  • RDF Serialization & Content Negotiation: Supports JSON-LD, RDF/XML, Turtle, and N-Triples.

  • Triple Store Compatibility: Works with Apache Jena Fuseki, Virtuoso, and GraphDB.

  • Automatic RDF Data Mapping: Define models that automatically map to RDF properties.

How to Use DjangoRDF

Setting Up the Environment

  1. Clone the repository

git clone https://github.com/judaicalink/djangordf.git
cd djangordf

  1. Create a virtual environment (Recommended)

python -m venv venv
source venv/bin/activate  # On macOS/Linux
venv\Scripts\activate  # On Windows

  1. Install dependencies

pip install -r requirements.txt

Configuring DjangoRDF

To use DjangoRDF, add it to your Django settings

INSTALLED_APPS = [
    'djangordf',
    ...
]

Configure the SPARQL endpoint in settings.py

RDF_CONFIG = {
    'SPARQL_ENDPOINT': 'https://data.judaicalink.org/sparql',
    'UPDATE_ENDPOINT': 'https://data.judaicalink.org/update',
    'DATASET': 'judaicalink'
}

Running Django Commands

DjangoRDF provides management commands to interact with RDF data.

  1. List available RDF models

python manage.py list_rdf_models

  1. Run a SPARQL query

python manage.py sparql_query "SELECT ?s ?p ?o WHERE { ?s ?p ?o } LIMIT 10"

  1. Load RDF data into the triple store

python manage.py load_rdf path/to/data.rdf

Defining RDF Models

DjangoRDF allows you to define RDF models similar to Django ORM models.

Example model definition

1from djangordf.models import RDFModel
2from rdflib.namespace import FOAF
3from rdflib import URIRef, Literal
4
5class Person(RDFModel):
6    rdf_type = FOAF.Person
7    name = Literal()
8    homepage = URIRef()

Querying RDF Data

You can use Django’s QuerySet-like API to retrieve RDF data

persons = Person.objects.filter(name="Moses Mendelssohn")
for person in persons:
    print(person.name, person.homepage)

Troubleshooting & Support

  • SPARQL queries not returning results? Check if the endpoint URL is correct.

  • Data not loading? Validate RDF data before importing.

  • Need help? Contact us at https://labs.judaicalink.org/contact/

— DjangoRDF simplifies RDF management in Django applications. Start integrating structured Linked Data today! 🚀