rdf_preprocess_username(&$variables) Implements

Enables semantically enriched output for Drupal sites in the form of RDFa. File core/modules/rdf/rdf.module

rdf_preprocess_node(&$variables) Implements

Functions to describe entities and bundles in RDF. The RDF module introduces RDF and RDFa to Drupal. RDF is a W3C standard to describe structured

rdf_preprocess_user(&$variables) Implements

rdf_preprocess_taxonomy_term(&$variables) Implements

rdf_rdfa_attributes($mapping, $data = NULL) Builds an array of RDFa attributes for a given mapping.

template_preprocess_rdf_metadata(&$variables) Prepares variables for RDF metadata templates.

The RDF type mapping for this bundle. Type:

public RdfMappingInterface::getFieldMapping($field_name)