function extractRDF()
{
$tc = 0;
$t = '';
$t_vals = array();
foreach ($this->nodes as $n) {
if ($n['tag'] != 'a') {
continue;
}
if (!($href = $this->v('href uri', '', $n['a']))) {
continue;
}
if (!($rels = $this->v('rel m', array(), $n['a']))) {
continue;
}
if (!($vals = array_intersect($this->terms, $rels))) {
continue;
}
$parts = preg_match('/^(.*\\/)([^\\/]+)\\/?$/', $href, $m) ? array('space' => $m[1], 'tag' => rawurldecode($m[2])) : array('space' => '', 'tag' => '');
if ($tag = $parts['tag']) {
$t_vals['s_' . $tc] = $this->getContainerResIDByClass($n, $this->containers);
$t_vals['concept_' . $tc] = $this->createBnodeID() . '_concept';
$t_vals['tag_' . $tc] = $tag;
$t_vals['space_' . $tc] = $parts['space'];
$t .= '?s_' . $tc . ' skos:subject [skos:prefLabel ?tag_' . $tc . ' ; skos:inScheme ?space_' . $tc . '] . ';
$tc++;
}
}
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
function extractRDF()
{
foreach ($this->nodes as $n) {
if ($n['tag'] != 'a') {
continue;
}
if (!($href = $this->v('href iri', '', $n['a']))) {
continue;
}
if (!($rels = $this->v('rel m', array(), $n['a']))) {
continue;
}
if (!($vals = array_intersect($this->terms, $rels))) {
continue;
}
$t_vals = array('s' => $this->getDocOwnerID($n), 's_page' => $this->getDocID($n), 'o' => $this->getPersonID($n), 'o_label' => $this->getResLabel($n), 'o_page' => $href);
$t = '';
foreach ($vals as $val) {
$t .= '?s xfn:' . $val . ' ?o . ';
$t .= $val == 'me' ? '?s foaf:homepage ?o_page . ' : '';
}
if ($t) {
$t .= '?s a foaf:Person ; foaf:homepage ?s_page . ';
$t .= '?o a foaf:Person ; foaf:homepage ?o_page ';
$t .= $t_vals['o_label'] ? '; foaf:name ?o_label . ' : '. ';
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
}
}
function extractRDF()
{
$tc = 0;
$t = '';
$t_vals = array();
foreach ($this->nodes as $n) {
if ($n['tag'] != 'a') {
continue;
}
if (!($href = $this->v('href uri', '', $n['a']))) {
continue;
}
if (!($rels = $this->v('rel m', array(), $n['a']))) {
continue;
}
if (!($vals = array_intersect($this->terms, $rels))) {
continue;
}
if (in_array('category', $this->v('class m', array(), $n['a']))) {
continue;
}
/* hcard/hcalendar categories */
$parts = preg_match('/^(.*\\/)([^\\/]+)\\/?$/', $href, $m) ? array('space' => $m[1], 'tag' => rawurldecode($m[2])) : array('space' => '', 'tag' => '');
if ($tag = $parts['tag']) {
$t_vals['s_' . $tc] = $this->getContainerResIDByClass($n, $this->containers);
$t_vals['tag_' . $tc] = $tag;
$t .= '?s_' . $tc . ' dc:subject ?tag_' . $tc . ' . ';
$tc++;
}
}
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
function extractRDF()
{
foreach ($this->nodes as $n) {
if (!($vals = $this->v('class m', array(), $n['a']))) {
continue;
}
if (!in_array('adr', $vals)) {
continue;
}
/* node */
$t_vals = array('s' => $this->getResID($n, 'adr'));
$t = '';
/* context */
list($t_vals, $t) = $this->extractContext($n, $t_vals, $t);
/* properties */
foreach ($this->terms as $term) {
$m = 'extract' . $this->camelCase($term);
if (method_exists($this, $m)) {
list($t_vals, $t) = $this->{$m}($n, $t_vals, $t);
}
}
/* result */
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
}
function extractRDF()
{
$t_vals = array();
$t = '';
foreach ($this->nodes as $n) {
if (isset($n['tag']) && $n['tag'] == 'link') {
$m = 'extract' . ucfirst($n['tag']);
list($t_vals, $t) = $this->{$m}($n, $t_vals, $t);
}
}
if ($t) {
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
}
function extractRDF()
{
$t_vals = array();
$t = '';
foreach ($this->nodes as $n) {
if (isset($n['tag']) && $n['tag'] == 'img' && $this->v('id', '', $n['a']) == 'profile-image') {
$t_vals['vcard_id'] = $this->getDocID($n) . '#resource(side/1/2/1)';
$t .= '?vcard_id mf:photo <' . $n['a']['src'] . '> . ';
break;
}
}
if ($t) {
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
}
function extractRDF()
{
foreach ($this->nodes as $n) {
if (!($vals = $this->v('class m', array(), $n['a']))) {
continue;
}
if (!in_array('vevent', $vals)) {
continue;
}
/* vevent */
$t_vals = array('s' => $this->getResID($n, 'vevent') . '_event', 's_type' => $this->a['ns']['cal'] . 'Vevent');
$t = ' ?s a ?s_type . ';
/* properties */
foreach ($this->terms as $term) {
$m = 'extract' . $this->camelCase($term);
if (method_exists($this, $m)) {
list($t_vals, $t) = $this->{$m}($n, $t_vals, $t);
}
}
/* result */
$doc = $this->getFilledTemplate($t, $t_vals, $n['doc_base']);
$this->addTs(ARC2::getTriplesFromIndex($doc));
}
}
function deleteConstructedGraph()
{
ARC2::inc('StoreConstructQueryHandler');
$h =& new ARC2_StoreConstructQueryHandler($this->a, $this->store);
$sub_r = $h->runQuery($this->infos);
$triples = ARC2::getTriplesFromIndex($sub_r);
$tgs = $this->infos['query']['target_graphs'];
$this->infos = array('query' => array('construct_triples' => $triples, 'target_graphs' => $tgs));
return $this->deleteTriples();
}
function toTriples($v)
{
if (is_array($v)) {
if (isset($v[0]) && isset($v[0]['s'])) {
return $v;
}
return ARC2::getTriplesFromIndex($v);
}
$parser = ARC2::getRDFParser($this->a);
if ($v && !preg_match('/\\s/', $v)) {
/* assume graph URI */
$parser->parse($v);
} else {
$parser->parse('', $v);
}
return $parser->getTriples();
}
function extractRDF()
{
$index = $this->getNodeIndex();
//print_r($index);
$this->rdf = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
$this->atom = 'http://www.w3.org/2005/atom';
$this->rss = 'http://purl.org/rss/1.0/';
$this->dc = 'http://purl.org/dc/elements/1.1/';
$this->dct = 'http://purl.org/dc/terms/';
$this->content = 'http://purl.org/rss/1.0/modules/content/';
$this->enc = 'http://purl.oclc.org/net/rss_2.0/enc#';
$this->mappings = array('feed' => $this->rss . 'channel', 'entry' => $this->rss . 'item', 'title' => $this->rss . 'title', 'link' => $this->rss . 'link', 'summary' => $this->rss . 'description', 'content' => $this->content . 'encoded', 'id' => $this->dc . 'identifier', 'author' => $this->dc . 'creator', 'category' => $this->dc . 'subject', 'updated' => $this->dc . 'date', 'source' => $this->dc . 'source');
$this->dt_props = array($this->dc . 'identifier', $this->rss . 'link');
foreach ($index as $p_id => $nodes) {
foreach ($nodes as $pos => $node) {
$tag = $this->v('tag', '', $node);
if ($tag == 'feed') {
$struct = $this->extractChannel($index[$node['id']]);
$triples = ARC2::getTriplesFromIndex($struct);
foreach ($triples as $t) {
$this->addT($t);
}
} elseif ($tag == 'entry') {
$struct = $this->extractItem($index[$node['id']]);
$triples = ARC2::getTriplesFromIndex($struct);
foreach ($triples as $t) {
$this->addT($t);
}
}
}
}
}
/**
* Get all triples with a given subject
* @param string $subjecturi
* @return array $triples
*/
function getTriplesForSubject( $subjecturi ) {
$reconstructedIndex = array( $subjecturi => $this->m_tripleindex[$subjecturi] );
$triples = ARC2::getTriplesFromIndex( $reconstructedIndex );
return $triples;
}
/**
* Execute method for SPARQL queries that only queries and returns results, but
* does not modify, add or delete triples.
*/
function executeNonEditSparqlQuery()
{
global $wgOut;
$output = $this->passSparqlToARC2AndGetAsPhpSerialization();
$outputtype = $this->determineOutputType();
if ($outputtype == 'rdfxml') {
# Here the results should be RDF/XML triples,
# not just plain XML SPARQL result set
$output_structure = unserialize($output);
$tripleindex = $output_structure['result'];
$triples = ARC2::getTriplesFromIndex($tripleindex);
if ($this->requestdata->outputequivuris) {
// FIXME: Why is this uncommented???
# $triples = $this->complementTriplesWithEquivURIsForProperties( $triples );
$triples = $this->complementTriplesWithEquivURIs($triples);
}
$output = $this->triplesToRDFXML($triples);
# Using echo instead of $wgOut->addHTML() here, since output format is not HTML
echo $output;
} else {
// TODO: Add some kind of check that the output is really an object
if (count($output) > 0) {
$output_structure = unserialize($output);
if ($this->requestdata->outputequivuris) {
$output_structure = $this->urisToEquivURIsInSparqlResults($output_structure);
}
if ($outputtype == 'htmltab') {
$output = $this->sparqlResultToHTML($output_structure);
$wgOut->addHTML($output);
} else {
# Using echo instead of $wgOut->addHTML() here, since output format is not HTML
$output = $this->sparqlendpoint->getSPARQLXMLSelectResultDoc($output_structure);
echo $output;
}
} else {
$wgOut->setHTML("ERROR: No results from SPARQL query!");
}
}
}
/**
* The main function
*/
function execute() {
global $wgRequest, $wgOut, $wgUser;
$this->setHeaders();
$this->handleRequestData();
$executesparql = true;
if ( $this->m_query == '' ) {
$this->printHTMLForm();
} else {
$this->ensureSparqlEndpointInstalled();
$this->convertURIsInQuery();
if ( $this->m_querytype == 'insert' ) { // TODO
if ( $this->checkAllowInsert() ) {
$this->importTriplesInQuery();
}
$this->printHTMLForm();
} elseif ( $this->m_querytype == 'delete' ) {
if ( $this->checkAllowDelete() ) {
$this->deleteTriplesInQuery();
}
// TODO Add a "successfully inserted/deleted" message here
$this->printHTMLForm();
} else { // We are querying/outputting data, not editing
if ( $this->m_outputtype == 'htmltab' ) {
$this->printHTMLForm();
if ( $wgRequest->getBool( 'showquery', false ) ) {
$this->printQueryStructure();
$executesparql = false;
}
} elseif ( $this->m_outputtype == 'rdfxml' && $this->m_querytype != 'construct' ) {
$errormessage = "RDF/XML can only be used with CONSTRUCT, if constructing triples";
$wgOut->addHTML( RDFIOUtils::formatErrorHTML( "Invalid choice", $errormessage ) );
$this->printHTMLForm();
$executesparql = false;
} else {
$this->prepareCreatingDownloadableFile();
}
if ( $executesparql ) {
$outputtype = $this->m_outputtype;
if ( $outputtype == '' && $this->m_querytype == 'construct' ) {
$outputtype = 'rdfxml';
}
if ( $outputtype == 'rdfxml' || $outputtype == 'xml' || $outputtype == '' ) {
// Make sure that ARC outputs data in a format that we can
// easily work with programmatically
$this->setOutputTypeInPost( 'php_ser' );
}
// Pass on the request handling to ARC2:s SPARQL Endpoint
$this->m_sparqlendpoint->handleRequest();
$this->handleSPARQLErrors();
$output = $this->m_sparqlendpoint->getResult();
if ( $outputtype == 'htmltab' ) {
if ( $this->m_outputoriguris ) {
$output = $this->convertURIsToOrigURIsInText( $output );
}
$output = $this->extractPrepareARCHTMLOutput( $output );
$wgOut->addHTML( $output );
} elseif ( $outputtype == 'rdfxml' ) {
$output_structure = unserialize( $output );
$tripleindex = $output_structure['result'];
$triples = ARC2::getTriplesFromIndex( $tripleindex );
if ( $this->m_outputoriguris ) {
$triples = $this->convertURIsToOrigURIsInTriples( $triples );
}
if ( $this->m_outputequivuris ) {
# $triples = $this->complementTriplesWithEquivURIsForProperties( $triples );
if ( $this->m_filtervocab && ( $this->m_filtervocaburl != '' ) ) {
$vocab_p_uri_filter = $this->getVocabPropertyUriFilter();
$triples = $this->complementTriplesWithEquivURIs( $triples, $vocab_p_uri_filter );
} else {
$triples = $this->complementTriplesWithEquivURIs( $triples );
}
}
$output = $this->triplesToRDFXML( $triples );
echo $output;
} else {
$output_structure = unserialize( $output );
if ( $this->m_outputoriguris ) {
$output_structure = $this->convertURIsToOrigURIsInSPARQLResultSet( $output_structure );
}
if ( $this->m_outputequivuris ) {
$vocab_p_uri_filter = $this->getVocabPropertyUriFilter();
$output_structure = $this->complementSPARQLResultRowsWithEquivURIs( $output_structure, $vocab_p_uri_filter );
}
$output = $this->m_sparqlendpoint->getSPARQLXMLSelectResultDoc( $output_structure );
echo $output;
}
}
}
}
}
/**
* @deprecated this is deprecated
*/
function get_triples()
{
return ARC2::getTriplesFromIndex($this->_to_arc_index($this->_index));
}