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Contents
Preface

Virtuoso Functions Guide

Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Phrases
RDF data
db.dba.rdf_64bit_upg...
db.dba.rdf_audit_met...
db.dba.rdf_backup_me...
db.dba.rdf_convert_r...
db.dba.rdf_datatype_...
db.dba.rdf_graph_col...
db.dba.rdf_graph_dif...
db.dba.rdf_graph_gro...
db.dba.rdf_graph_gro...
db.dba.rdf_langmatch...
db.dba.rdf_load_rdfa
db.dba.rdf_load_rdfx...
db.dba.rdf_load_rdfx...
db.dba.rdf_quad_uri
db.dba.rdf_quad_uri_...
db.dba.rdf_quad_uri_...
db.dba.rdf_regex
db.dba.rdf_restore_m...
db.dba.rdf_suo_apply...
db.dba.rdf_suo_diff_...
db.dba.rdf_triples_t...
db.dba.rdf_triples_t...
db.dba.rdf_ttl2hash
db.dba.rdf_void_stor...
db.dba.sparql_eval
db.dba.sparql_eval_t...
db.dba.sparql_rdb2rd...
db.dba.sparql_rdb2rd...
db.dba.sparql_rexec
db.dba.sparql_rexec_...
db.dba.sparql_rexec_...
db.dba.sparql_select...
db.dba.ttlp
db.dba.ttlp_mt
db.dba.ttlp_mt_local...
group_concat
group_digest
isref
rdf_view_sync_to_phy...
sample
__xml_get_ns_prefix
__xml_get_ns_uri
http_nt_triple
http_ttl_triple
iri_split
ld_dir
rdfs_rule_set
sparql_to_sql_text
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
VAD
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web & Internet
XML
XPATH & XQUERY

Functions Index

DB.DBA.RDF_LOAD_RDFA

Parses the content of RDF embedded as RDFa text as a sequence of separate RDF triples.
DB.DBA.RDF_LOAD_RDFA (in rdfa_text varchar, in omt_top_rdf varchar, in graph_uri varchar);
Description

Parses the content of RDF embedded as RDFa text as a sequence of separate RDF triples.

Parameters
rdfa_text – text of document containing RDFa data
omt_top_rdf – base IRI to resolve relative IRIs
graph_uri – the IRI of destination graph
Return Types

The return value is not specified and may be changed in future versions.

Examples

Load from local file:

SQL>sparql clear graph <http://virtuoso.openlinksw.com/example>;
Done. -- 2 msec.
SQL>DB.DBA.RDF_LOAD_RDFA (file_to_string ('pricing.html'), 'http://virtuoso.openlinksw.com/pricing/#', 'http://virtuoso.openlinksw.com/example');
Done. -- 106 msec.

Load from URI:

SQL>sparql clear graph <http://virtuoso.openlinksw.com/example>;
SQL> DB.DBA.RDF_LOAD_RDFA (http_get('http://virtuoso.openlinksw.com/pricing/'), 'http://virtuoso.openlinksw.com/pricing/#', 'http://virtuoso.openlinksw.com/example');
Done. -- 109 msec.

-- Check total triples retrieved: 
SQL>SPARQL 
SELECT COUNT(*)  
from <http://virtuoso.openlinksw.com/example>
WHERE {?s ?p ?o};
callret-0
INTEGER
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