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Write your SPARQL query directly in the JSON-LD you would like to have in output

Project description

Py SPARQL Transformer

Write your SPARQL query directly in the JSON-LD you would like to have in output.

Looking for the JavaScript Version?


  • It is now possible to set a different merging anchor instead of id/@id using the $anchor modifier.

Table of Contents

How to use

Install by pip.

pip install SPARQLTransformer

Use in your JS application (node or browser).

from SPARQLTransformer import sparqlTransformer

out = sparqlTransformer(query, options)

The first parameter (query) is the query in the JSON format. The JSON can be:

  • an already parsed (or defined real time) dict,
  • the local path of a JSON file (that will then be read and parsed).

The options parameter is optional, and can define the following:

context The value in @context. It overwrites the one in the query.
sparqlFunction None A function receiving in input the transformed query in SPARQL, returning a Promise. If not specified, the module performs the query on its own1 against the specified endpoint.
endpoint Used only if sparqlFunction is not specified.
debug False Enter in debug mode. This allow to print in console the generated SPARQL query.

See for further examples.


If you use this module for your research work, please cite:

Pasquale Lisena, Albert Meroño-Peñuela, Tobias Kuhn and Raphaël Troncy. Easy Web API Development with SPARQL Transformer. In 18th International Semantic Web Conference (ISWC), Auckland, New Zealand, October 26-30, 2019.

BIB file

Pasquale Lisena and Raphaël Troncy. Transforming the JSON Output of SPARQL Queries for Linked Data Clients. In WWW'18 Companion: The 2018 Web Conference Companion, April 23–27, 2018, Lyon, France.

BIB file

Project details

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