SPARQL input plugin for Embulk

SPARQL input plugin for Embulk loads records by SPARQL from any endpoint.

Overview

• Plugin type: input
• Resume supported: no
• Cleanup supported: no
• Guess supported: no

Configuration

• endpoint: SPARQL endpoint url (string, required)
• query: SPARQL query (string, required)
• columns: Output columns list (list, required)

Example

in:
  type: sparql
  endpoint: https://data.e-stat.go.jp/lod/sparql/alldata/query
  query: |
    PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
    PREFIX foaf: <http://xmlns.com/foaf/0.1/>
    PREFIX dcterms: <http://purl.org/dc/terms/>
    SELECT ?publisher ?label ?homepage
    WHERE {
      ?s rdf:type <http://data.e-stat.go.jp/lod/otherSurvey/Concept>;
         rdfs:label ?label;
         foaf:homepage ?homepage;
         dcterms:publisher ?publisher
    }
    order by ?publisher
  columns:
    - { name: publisher, type: string }
    - { name: label, type: string }
    - { name: homepage, type: string }

Build

$ ./gradlew gem  # -t to watch change of files and rebuild continuously