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https://github.com/rdf-elixir/sparql-ex

An implementation of SPARQL for Elixir
https://github.com/rdf-elixir/sparql-ex

elixir graph linked-data query-language semantic-web sparql

Last synced: about 1 month ago
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An implementation of SPARQL for Elixir

Host: GitHub
URL: https://github.com/rdf-elixir/sparql-ex
Owner: rdf-elixir
License: mit
Created: 2018-03-19T21:01:26.000Z (over 6 years ago)
Default Branch: master
Last Pushed: 2023-12-21T22:55:09.000Z (12 months ago)
Last Synced: 2024-05-21T19:17:17.209Z (7 months ago)
Topics: elixir, graph, linked-data, query-language, semantic-web, sparql
Language: Elixir
Homepage: https://rdf-elixir.dev/
Size: 689 KB
Stars: 35
Watchers: 6
Forks: 4
Open Issues: 1
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE.md
- Code of conduct: CODE_OF_CONDUCT.md

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freaking_awesome_elixir - Elixir - An implementation of the [SPARQL](http://www.w3.org/TR/sparql11-overview/) standards in Elixir. (Domain-specific language)

README

        

# SPARQL.ex

[![CI](https://github.com/rdf-elixir/sparql-ex/actions/workflows/ci.yml/badge.svg)](https://github.com/rdf-elixir/sparql-ex/actions/workflows/ci.yml)

[![Hex.pm](https://img.shields.io/hexpm/v/sparql.svg?style=flat-square)](https://hex.pm/packages/sparql)

An implementation of the [SPARQL] standards for Elixir.

It allows to execute SPARQL queries against [RDF.ex] data structures. With the separate [SPARQL.Client] package SPARQL queries can be executed against SPARQL protocol endpoints.

The API documentation can be found [here](https://hexdocs.pm/sparql/). For a guide and more information about SPARQL.ex and it's related projects, go to .

## Current state

Note: **The [SPARQL.Client] supports the full SPARQL 1.1 query language**. The missing query language features in the following list are just not yet supported **by the query engine** executing queries against RDF.ex data structures.

- [ ] SPARQL 1.1 Query Language

    - [x] Basic Graph Pattern matching

    - [x] Group Graph Pattern matching

    - [x] Optional Graph Pattern matching via `OPTIONAL`

    - [x] Alternative Graph Pattern matching via `UNION`

    - [ ] Pattern matching on Named Graphs via `FROM` and `GRAPH`

    - [ ] Solution sequence modification

        - [x] Projection with the `SELECT` clause

        - [x] Assignments to variables in the `SELECT` clause

        - [x] `DISTINCT`

        - [x] `REDUCED`

        - [ ] `ORDER BY`

        - [ ] `OFFSET`

        - [ ] `LIMIT`

    - [x] Restriction of solutions via `FILTER`

    - [x] All builtin functions specified in SPARQL 1.0 and 1.1

    - [x] Ability to define extension functions

    - [x] All XPath constructor functions as specified in the SPARQL 1.1 spec

    - [x] Assignments via `BIND`

    - [x] Negation via `MINUS`

    - [ ] Negation via `NOT EXIST`

    - [ ] Inline Data via `VALUES`

    - [ ] Aggregates via `GROUP BY` and `HAVING`

    - [ ] Subqueries

    - [ ] Property Paths

    - [ ] `ASK` query form

    - [ ] `DESCRIBE` query form

    - [x] `CONSTRUCT` query form

- [ ] SPARQL 1.1 Update

- [x] SPARQL Query Results XML Format

- [x] SPARQL 1.1 Query Results JSON Format

- [x] SPARQL 1.1 Query Results CSV and TSV Formats

- [x] SPARQL 1.1 Protocol (currently client-only; in a separate package: [sparql_client](https://github.com/rdf-elixir/sparql_client))

- [ ] SPARQL 1.1 Graph Store HTTP Protocol

- [ ] SPARQL 1.1 Service Description

- [ ] SPARQL 1.1 Federated Query

- [ ] SPARQL 1.1 Entailment Regimes

Other features on the roadmap:

- [ ] parallelization of the query execution

- [ ] query DSL

## Contributing

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

## Consulting

If you need help with your Elixir and Linked Data projects, just contact [NinjaConcept](https://www.ninjaconcept.com/) via .

## License and Copyright

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

[SPARQL]:               http://www.w3.org/TR/sparql11-overview/

[SPARQL.ex]:            https://hex.pm/packages/sparql

[SPARQL.Client]:        https://hex.pm/packages/sparql_client

[RDF.ex]:               https://hex.pm/packages/rdf