SPARQL API examples

The following examples illustrate SPARQL API usage.

Query builders

  // Does there exist a user by the name john.smith?
  sparql_ask()->
    where('?user', rdf::type, rdf_curie('drupal:user'))->
    where('?user', dc::title, 'john.smith');

  // Select the titles of all blog posts promoted to the front page
  sparql_select('?title')->
    where('?node', rdf::type, rdf_curie('drupal:node'))->
    where('?node', 'node:type', 'blog')->
    where('?node', 'node:promote', TRUE)->
    where('?node', 'node:title', rdf_var('?title'));