RDFa API

Functions to describe entities and bundles for RDFa.

RDF module introduces RDFa to Drupal, which provides a set of XHTML attributes to augment visual data with machine-readable hints.

See also

http://www.w3.org/TR/xhtml-rdfa-primer/

Modules can provide mappings of their bundles' data and metadata to RDFa properties using the appropriate vocabularies. This module takes care of injecting that data into variables available to themers in the .tpl files. Drupal core themes ship with RDFa output enabled.

Example mapping from node.module:

<?php

array(
'type' => 'node',
'bundle' => RDF_DEFAULT_BUNDLE,
'mapping' => array(
'rdftype' => array('sioc:Item', 'foaf:Document'),
'title' => array(
'predicates' => array('dc:title'),
),
'created' => array(
'predicates' => array('dc:date', 'dc:created'),
'datatype' => 'xsd:dateTime',
'callback' => 'date_iso8601',
),
'body' => array(
'predicates' => array('content:encoded'),
),
'uid' => array(
'predicates' => array('sioc:has_creator'),
),
'name' => array(
'predicates' => array('foaf:name'),
),
),
);

?>

Constants

Name	Location	Description
RDF_DEFAULT_BUNDLE	modules/rdf/rdf.module	RDF bundle flag: Default bundle.

Functions

Name	Location	Description
rdf_mapping_delete	modules/rdf/rdf.module	Deletes the mapping for the given pair of type and bundle from the database.
rdf_mapping_load	modules/rdf/rdf.module	Returns the mapping for attributes of a given type/bundle pair.
rdf_mapping_save	modules/rdf/rdf.module	Saves an RDF mapping to the database.
rdf_rdfa_attributes	modules/rdf/rdf.module	Builds an array of RDFa attributes for a given mapping.
_rdf_get_default_mapping	modules/rdf/rdf.module	Returns the default RDF mapping for a given entity type.
_rdf_mapping_load	modules/rdf/rdf.module	Helper function to retrieve a RDF mapping from the database.

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