function runQuery($q, $qt = '')
{
/* ep */
$ep = $this->v('remote_store_endpoint', 0, $this->a);
if (!$ep) {
return false;
}
/* prefixes */
$ns = isset($this->a['ns']) ? $this->a['ns'] : array();
$added_prefixes = array();
$prologue = '';
foreach ($ns as $k => $v) {
$k = rtrim($k, ':');
if (in_array($k, $added_prefixes)) {
continue;
}
if (preg_match('/(^|\\s)' . $k . ':/s', $q) && !preg_match('/PREFIX\\s+' . $k . '\\:/is', $q)) {
$prologue .= "\n" . 'PREFIX ' . $k . ': <' . $v . '>';
}
$added_prefixes[] = $k;
}
$q = $prologue . "\n" . $q;
/* http verb */
$mthd = in_array($qt, array('load', 'insert', 'delete')) ? 'POST' : 'GET';
/* reader */
ARC2::inc('Reader');
$reader = new ARC2_Reader($this->a, $this);
$reader->setAcceptHeader('Accept: application/sparql-results+xml; q=0.9, application/rdf+xml; q=0.9, */*; q=0.1');
if ($mthd == 'GET') {
$url = $ep;
$url .= strpos($ep, '?') ? '&' : '?';
$url .= 'query=' . urlencode($q);
if ($k = $this->v('store_read_key', '', $this->a)) {
$url .= '&key=' . urlencode($k);
}
} else {
$url = $ep;
$reader->setHTTPMethod($mthd);
$reader->setCustomHeaders("Content-Type: application/x-www-form-urlencoded");
$suffix = ($k = $this->v('store_write_key', '', $this->a)) ? '&key=' . rawurlencode($k) : '';
$reader->setMessageBody('query=' . rawurlencode($q) . $suffix);
}
$to = $this->v('remote_store_timeout', 0, $this->a);
$reader->activate($url, '', 0, $to);
$format = $reader->getFormat();
$resp = '';
while ($d = $reader->readStream()) {
$resp .= $d;
}
$reader->closeStream();
$ers = $reader->getErrors();
unset($this->reader);
if ($ers) {
return array('errors' => $ers);
}
$mappings = array('rdfxml' => 'RDFXML', 'sparqlxml' => 'SPARQLXMLResult', 'turtle' => 'Turtle');
if (!$format || !isset($mappings[$format])) {
return $resp;
//return $this->addError('No parser available for "' . $format . '" SPARQL result');
}
/* format parser */
$suffix = $mappings[$format] . 'Parser';
ARC2::inc($suffix);
$cls = 'ARC2_' . $suffix;
$parser = new $cls($this->a, $this);
$parser->parse($ep, $resp);
/* ask|load|insert|delete */
if (in_array($qt, array('ask', 'load', 'insert', 'delete'))) {
$bid = $parser->getBooleanInsertedDeleted();
switch ($qt) {
case 'ask':
return $bid['boolean'];
default:
return $bid;
}
}
/* select */
if ($qt == 'select' && !method_exists($parser, 'getRows')) {
return $resp;
}
if ($qt == 'select') {
return array('rows' => $parser->getRows(), 'variables' => $parser->getVariables());
}
/* any other */
return $parser->getSimpleIndex(0);
}
function runQuery($q, $qt = '', $infos = '')
{
/* ep */
$ep = $this->v('remote_store_endpoint', 0, $this->a);
if (!$ep) {
return false;
}
/* prefixes */
$q = $this->completeQuery($q);
/* custom handling */
$mthd = 'run' . $this->camelCase($qt) . 'Query';
if (method_exists($this, $mthd)) {
return $this->{$mthd}($q, $infos);
}
/* http verb */
$mthd = in_array($qt, array('load', 'insert', 'delete')) ? 'POST' : 'GET';
/* reader */
ARC2::inc('Reader');
$reader = new ARC2_Reader($this->a, $this);
$reader->setAcceptHeader('Accept: application/sparql-results+xml; q=0.9, application/rdf+xml; q=0.9, */*; q=0.1');
if ($mthd == 'GET') {
$url = $ep;
$url .= strpos($ep, '?') ? '&' : '?';
$url .= 'query=' . urlencode($q);
if ($k = $this->v('store_read_key', '', $this->a)) {
$url .= '&key=' . urlencode($k);
}
} else {
$url = $ep;
$reader->setHTTPMethod($mthd);
$reader->setCustomHeaders("Content-Type: application/x-www-form-urlencoded");
$suffix = ($k = $this->v('store_write_key', '', $this->a)) ? '&key=' . rawurlencode($k) : '';
$reader->setMessageBody('query=' . rawurlencode($q) . $suffix);
}
$to = $this->v('remote_store_timeout', 0, $this->a);
$reader->activate($url, '', 0, $to);
$format = $reader->getFormat();
$resp = '';
while ($d = $reader->readStream()) {
$resp .= $this->toUTF8($d);
}
$reader->closeStream();
$ers = $reader->getErrors();
$this->a['reader_auth_infos'] = $reader->getAuthInfos();
unset($this->reader);
if ($ers) {
return array('errors' => $ers);
}
$mappings = array('rdfxml' => 'RDFXML', 'sparqlxml' => 'SPARQLXMLResult', 'turtle' => 'Turtle');
if (!$format || !isset($mappings[$format])) {
return $resp;
//return $this->addError('No parser available for "' . $format . '" SPARQL result');
}
/* format parser */
$suffix = $mappings[$format] . 'Parser';
ARC2::inc($suffix);
$cls = 'ARC2_' . $suffix;
$parser = new $cls($this->a, $this);
$parser->parse($ep, $resp);
/* ask|load|insert|delete */
if (in_array($qt, array('ask', 'load', 'insert', 'delete'))) {
$bid = $parser->getBooleanInsertedDeleted();
if ($qt == 'ask') {
$r = $bid['boolean'];
} else {
$r = $bid;
}
} elseif ($qt == 'select' && !method_exists($parser, 'getRows')) {
$r = $resp;
} elseif ($qt == 'select') {
$r = array('rows' => $parser->getRows(), 'variables' => $parser->getVariables());
} else {
$r = $parser->getSimpleIndex(0);
}
unset($parser);
return $r;
}
function processHTTPCall($block, $mthd = 'GET')
{
ARC2::inc('Reader');
$reader = new ARC2_Reader($this->a, $this);
$url = $this->replacePlaceholders($block['args'][0]['value'], 'function_call');
if ($mthd != 'GET') {
$reader->setHTTPMethod($mthd);
$reader->setCustomHeaders("Content-Type: application/x-www-form-urlencoded");
}
$to = $this->v('remote_call_timeout', 0, $this->a);
$reader->activate($url, '', 0, $to);
$format = $reader->getFormat();
$resp = '';
while ($d = $reader->readStream()) {
$resp .= $d;
}
$reader->closeStream();
unset($this->reader);
return array('value_type' => 'http_response', 'value' => $resp);
}