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 rdf mappings that use prefixes that are not defined in rdf_rdf_namespaces(), this hook should be used to define the new namespace prefixes.

Return value

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

Related topics

File

core/modules/rdf/rdf.api.php, line 27

Code

function hook_rdf_namespaces() {
    return [
        '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#',
    ];
}