swedebugia / guile-sparql

A SPARQL module for Guile Scheme.

guile-sparql

This package provides a sparql-query function to query an RDF store. Additionally, it provides an interface to write SPARQL queries using S-expressions.

Example usage

Using default settings (triple store at http://localhost:8890 and CSV output format):

(use-modules (sparql driver)
             (sparql lang))

(sparql-query
  (let ((rdf      (prefix "http://www.w3.org/1999/02/22-rdf-syntax-ns#"))
        (rdfs     (prefix "http://www.w3.org/2000/01/rdf-schema#"))
        (internal (prefix "http://localhost/")))
    (select '(subject predicate object)
            `((subject    predicate       object)
              (subject    ,(rdf "type")   ,(internal "Sample")))
            '((group by object)))))

Using non-default settings:

(use-modules (sparql driver)
             (sparql lang))

(sparql-query
  (let ((rdf      (prefix "http://www.w3.org/1999/02/22-rdf-syntax-ns#"))
        (rdfs     (prefix "http://www.w3.org/2000/01/rdf-schema#"))
        (internal (prefix "http://localhost/")))
    (select '(subject predicate object)
            `((subject    predicate       object)
              (subject    ,(rdf "type")   ,(internal "Sample")))
            '((group by object))))
  #:host "1.2.3.4"
  #:port 8080
  #:type "text/xml"
  #:token "...")