function hook_rdf_namespaces

Allow modules to define namespaces for RDF mappings.

Many common namespace prefixes are defined in rdf_rdf_namespaces(). However, if a module implements hook_rdf_mapping() and uses a prefix that is not defined in rdf_rdf_namespaces(), this hook should be used to define the new namespace prefix.

Return value

An associative array of namespaces where the key is the namespace prefix and the value is the namespace URI.

Related topics

Hooks
Allow modules to interact with the Drupal core.
RDF Mapping API
Functions to describe entities and bundles in RDF.
2 functions implement hook_rdf_namespaces()
1 invocation of hook_rdf_namespaces()

File

drupal/core/modules/rdf/rdf.api.php, line 99
Hooks provided by the RDF module.

Code

function hook_rdf_namespaces() {
  return array(
    'content' => 'http://purl.org/rss/1.0/modules/content/',
    'dc' => 'http://purl.org/dc/terms/',
    'foaf' => 'http://xmlns.com/foaf/0.1/',
    'og' => 'http://ogp.me/ns#',
    'rdfs' => 'http://www.w3.org/2000/01/rdf-schema#',
    'sioc' => 'http://rdfs.org/sioc/ns#',
    'sioct' => 'http://rdfs.org/sioc/types#',
    'skos' => 'http://www.w3.org/2004/02/skos/core#',
    'xsd' => 'http://www.w3.org/2001/XMLSchema#',
  );
}