* @package ARC2 * @version 2010-11-16 */ ARC2::inc('Store'); class ARC2_StoreEndpoint extends ARC2_Store { function __construct($a, &$caller) { parent::__construct($a, $caller); } function __init() { parent::__init(); $this->headers = array('http' => 'HTTP/1.1 200 OK', 'vary' => 'Vary: Accept'); $this->read_key = $this->v('endpoint_read_key', '', $this->a); $this->write_key = $this->v('endpoint_write_key', '', $this->a); $this->timeout = $this->v('endpoint_timeout', 0, $this->a); $this->a['store_allow_extension_functions'] = $this->v('store_allow_extension_functions', 0, $this->a); $this->allow_sql = $this->v('endpoint_enable_sql_output', 0, $this->a); $this->result = ''; } /* */ function getQueryString($mthd = 'post') { $r = ''; if (!$mthd || ($mthd == 'post')) { $r = @file_get_contents('php://input'); } $r = !$r ?$this->v1('QUERY_STRING', '', $_SERVER) : $r; return $r; } function p($name='', $mthd = '', $multi = '', $default = '') { $mthd = strtolower($mthd); if($multi){ $qs = $this->getQueryString($mthd); if (preg_match_all('/\&' . $name . '=([^\&]+)/', $qs, $m)){ foreach ($m[1] as $i => $val) { $m[1][$i] = stripslashes($val); } return $m[1]; } return $default ? $default : array(); } $args = array_merge($_GET, $_POST); $r = isset($args[$name]) ? $args[$name] : $default; return is_array($r) ? $r : stripslashes($r); } /* */ function getFeatures() { return $this->v1('endpoint_features', array(), $this->a); } function setHeader($k, $v) { $this->headers[$k] = $v; } function sendHeaders() { if (!isset($this->is_dump) || !$this->is_dump) { $this->setHeader('content-length', 'Content-Length: ' . strlen($this->getResult())); foreach ($this->headers as $k => $v) { header($v); } } } function getResult() { return $this->result; } /* */ function handleRequest($auto_setup = 0) { if (!$this->isSetUp()) { if ($auto_setup) { $this->setUp(); return $this->handleRequest(0); } else { $this->setHeader('http', 'HTTP/1.1 400 Bad Request'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Missing configuration or the endpoint store was not set up yet.'; } } elseif (($img = $this->p('img'))) { $this->handleImgRequest($img); } elseif (($q = $this->p('query'))) { $this->checkProcesses(); $this->handleQueryRequest($q); if ($this->p('show_inline')) { $this->query_result = '

' . ($this->p('output') != 'htmltab' ? '

' . htmlspecialchars($this->getResult()) . '

' : $this->getResult()) . '

'; $this->handleEmptyRequest(1); } } else { $this->handleEmptyRequest(); } } function go($auto_setup = 0) { $this->handleRequest($auto_setup); $this->sendHeaders(); echo $this->getResult(); } /* */ function handleImgRequest($img) { $this->setHeader('content-type', 'Content-type: image/gif'); $imgs = array( 'bg_body' => base64_decode('R0lGODlhAQBkAMQAAPf39/Hx8erq6vPz8/Ly8u/v7+np6fT09Ovr6/b29u3t7ejo6Pz8/Pv7+/39/fr6+vj4+P7+/vn5+f///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAAAAAAALAAAAAABAGQAAAUp4GIIiFIExHAkAAC9cAxJdG3TT67vTe//jKBQ6Cgaj5GkcpmcOJ/QZwgAOw=='), ); $this->result = isset($imgs[$img]) ? $imgs[$img] : ''; $this->sendHeaders(); echo $this->getResult(); exit; } /* */ function handleEmptyRequest($force = 0) { /* service description */ $formats = array( 'rdfxml' => 'RDFXML', 'rdf+xml' => 'RDFXML', 'html' => 'HTML' ); if (!$force && $this->getResultFormat($formats, 'html') != 'HTML') { $this->handleServiceDescriptionRequest(); } else { $this->setHeader('content-type', 'Content-type: text/html; charset=utf-8'); $this->result = $this->getHTMLFormDoc(); } } /* */ function handleServiceDescriptionRequest() { $q = ' PREFIX void: CONSTRUCT { <> void:sparqlEndpoint <> . } WHERE { ?s ?p ?o . } LIMIT 1 '; $this->handleQueryRequest($q); } /* */ function checkProcesses() { if (method_exists($this->caller, 'checkSPARQLEndpointProcesses')) { $sub_r = $this->caller->checkSPARQLEndpointProcesses(); } elseif ($this->timeout) { $this->killDBProcesses('', $this->timeout); } } /* */ function handleQueryRequest($q) { if (preg_match('/^dump/i', $q)) { $infos = array('query' => array('type' => 'dump')); $this->is_dump = 1; } else { ARC2::inc('SPARQLPlusParser'); $p = new ARC2_SPARQLPlusParser($this->a, $this); $p->parse($q); $infos = $p->getQueryInfos(); } /* errors? */ if ($errors = $this->getErrors()) { $this->setHeader('http', 'HTTP/1.1 400 Bad Request'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = htmlspecialchars(join("\n", $errors)); return true; } $qt = $infos['query']['type']; /* wrong read key? */ if ($this->read_key && ($this->p('key') != $this->read_key) && preg_match('/^(select|ask|construct|describe|dump)$/', $qt)) { $this->setHeader('http', 'HTTP/1.1 401 Access denied'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Access denied. Missing or wrong "key" parameter.'; return true; } /* wrong write key? */ if ($this->write_key && ($this->p('key') != $this->write_key) && preg_match('/^(load|insert|delete|update)$/', $qt)) { $this->setHeader('http', 'HTTP/1.1 401 Access denied'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Access denied. Missing or wrong "key" parameter.'; return true; } /* non-allowed query type? */ if (!in_array($qt, $this->getFeatures())) { $this->setHeader('http', 'HTTP/1.1 401 Access denied'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Access denied for "' .$qt. '" query'; return true; } /* load/insert/delete via GET */ if (in_array($qt, array('load', 'insert', 'delete')) && isset($_GET['query'])) { $this->setHeader('http', 'HTTP/1.1 501 Not Implemented'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Query type "' .$qt. '" not supported via GET'; return true; } /* unsupported query type */ if (!in_array($qt, array('select', 'ask', 'describe', 'construct', 'load', 'insert', 'delete', 'dump'))) { $this->setHeader('http', 'HTTP/1.1 501 Not Implemented'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Unsupported query type "' .$qt. '"'; return true; } /* adjust infos */ $infos = $this->adjustQueryInfos($infos); $t1 = ARC2::mtime(); $r = array('result' => $this->runQuery($infos, $qt)); $t2 = ARC2::mtime(); $r['query_time'] = $t2 - $t1; /* query errors? */ if ($errors = $this->getErrors()) { $this->setHeader('http', 'HTTP/1.1 400 Bad Request'); $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Error: ' . join("\n", $errors); return true; } /* result */ $m = 'get' . ucfirst($qt) . 'ResultDoc'; if (method_exists($this, $m)) { $this->result = $this->$m($r); } else { $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8'); $this->result = 'Result serializer not available, dumping raw data:' . "\n" . print_r($r, 1); } } /* */ function adjustQueryInfos($infos) { /* limit */ if ($max_l = $this->v('endpoint_max_limit', 0, $this->a)) { if ($this->v('limit', $max_l + 1, $infos['query']) > $max_l) { $infos['query']['limit'] = $max_l; } } /* default-graph-uri / named-graph-uri */ $dgs = $this->p('default-graph-uri', '', 1); $ngs = $this->p('named-graph-uri', '', 1); if (count(array_merge($dgs, $ngs))) { $ds = array(); foreach ($dgs as $g) { $ds[] = array('graph' => $this->calcURI($g), 'named' => 0); } foreach ($ngs as $g) { $ds[] = array('graph' => $this->calcURI($g), 'named' => 1); } $infos['query']['dataset'] = $ds; } /* infos result format */ if (($this->p('format') == 'infos') || ($this->p('output') == 'infos')) { $infos['result_format'] = 'structure'; } /* sql result format */ if (($this->p('format') == 'sql') || ($this->p('output') == 'sql')) { $infos['result_format'] = 'sql'; } return $infos; } /* */ function getResultFormat($formats, $default) { $prefs = array(); /* arg */ if (($v = $this->p('format')) || ($v = $this->p('output'))) { $prefs[] = $v; } /* accept header */ $vals = explode(',', $_SERVER['HTTP_ACCEPT']); if ($vals) { $o_vals = array(); foreach ($vals as $val) { if (preg_match('/(rdf\+n3|x\-turtle|rdf\+xml|sparql\-results\+xml|sparql\-results\+json|json)/', $val, $m)) { $o_vals[$m[1]] = 1; if (preg_match('/\;q\=([0-9\.]+)/', $val, $sub_m)) { $o_vals[$m[1]] = 1 * $sub_m[1]; } } } arsort($o_vals); foreach ($o_vals as $val => $prio) { $prefs[] = $val; } } /* default */ $prefs[] = $default; foreach ($prefs as $pref) { if (isset($formats[$pref])) { return $formats[$pref]; } } } /* SELECT */ function getSelectResultDoc($r) { $formats = array( 'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON', 'php_ser' => 'PHPSER', 'plain' => 'Plain', 'sql' => ($this->allow_sql ? 'Plain' : 'xSQL'), 'infos' => 'Plain', 'htmltab' => 'HTMLTable', 'tsv' => 'TSV', ); if ($f = $this->getResultFormat($formats, 'xml')) { $m = 'get' . $f . 'SelectResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getSPARQLXMLSelectResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml'); $vars = $r['result']['variables']; $rows = $r['result']['rows']; $dur = $r['query_time']; $nl = "\n"; /* doc */ $r = '' . '' . $nl . '' . ''; /* head */ $r .= $nl . ' '; $r .= $nl . ' '; if (is_array($vars)) { foreach ($vars as $var) { $r .= $nl . ' '; } } $r .= $nl . ' '; /* results */ $r .= $nl . ' '; if (is_array($rows)) { foreach ($rows as $row) { $r .= $nl . ' '; foreach ($vars as $var) { if (isset($row[$var])) { $r .= $nl . ' '; if ($row[$var . ' type'] == 'uri') { $r .= $nl . ' ' .htmlspecialchars($row[$var]). ''; } elseif ($row[$var . ' type'] == 'bnode') { $r .= $nl . ' ' .substr($row[$var], 2). ''; } else { $dt = isset($row[$var . ' datatype']) ? ' datatype="' .htmlspecialchars($row[$var . ' datatype']). '"' : ''; $lang = isset($row[$var . ' lang']) ? ' xml:lang="' .htmlspecialchars($row[$var . ' lang']). '"' : ''; $r .= $nl . ' ' .htmlspecialchars($row[$var]). ''; } $r .= $nl . ' '; } } $r .= $nl . ' '; } } $r .= $nl . ' '; /* /doc */ $r .= $nl . ''; return $r; } function getSPARQLJSONSelectResultDoc($r) { $con = $this->getDBCon(); $this->setHeader('content-type', 'Content-Type: application/sparql-results+json'); $vars = $r['result']['variables']; $rows = $r['result']['rows']; $dur = $r['query_time']; $nl = "\n"; /* doc */ $r = '{'; /* head */ $r .= $nl . ' "head": {'; $r .= $nl . ' "vars": ['; $first_var = 1; foreach ($vars as $var) { $r .= $first_var ? $nl : ',' . $nl; $r .= ' "' .$var. '"'; $first_var = 0; } $r .= $nl . ' ]'; $r .= $nl . ' },'; /* results */ $r .= $nl . ' "results": {'; $r .= $nl . ' "bindings": ['; $first_row = 1; foreach ($rows as $row) { $r .= $first_row ? $nl : ',' . $nl; $r .= ' {'; $first_var = 1; foreach ($vars as $var) { if (isset($row[$var])) { $r .= $first_var ? $nl : ',' . $nl . $nl; $r .= ' "' .$var. '": {'; if ($row[$var . ' type'] == 'uri') { $r .= $nl . ' "type": "uri",'; $r .= $nl . ' "value": "' .mysqli_real_escape_string( $con, $row[$var]). '"'; } elseif ($row[$var . ' type'] == 'bnode') { $r .= $nl . ' "type": "bnode",'; $r .= $nl . ' "value": "' . substr($row[$var], 2) . '"'; } else { $dt = isset($row[$var . ' datatype']) ? ',' . $nl .' "datatype": "' .mysqli_real_escape_string( $con, $row[$var . ' datatype']). '"' : ''; $lang = isset($row[$var . ' lang']) ? ',' . $nl .' "xml:lang": "' .mysqli_real_escape_string( $con, $row[$var . ' lang']). '"' : ''; $type = $dt ? 'typed-literal' : 'literal'; $r .= $nl . ' "type": "' . $type . '",'; $r .= $nl . ' "value": "' . $this->jsonEscape($row[$var]) . '"'; $r .= $dt . $lang; } $r .= $nl . ' }'; $first_var = 0; } } $r .= $nl . ' }'; $first_row = 0; } $r .= $nl . ' ]'; $r .= $nl . ' }'; /* /doc */ $r .= $nl . '}'; if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERSelectResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainSelectResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } function getHTMLTableSelectResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/html; charset=utf-8'); $vars = $r['result']['variables']; $rows = $r['result']['rows']; $dur = $r['query_time']; if ($this->p('show_inline')) return '' . $this->getHTMLTableRows($rows, $vars) . '

'; return ' ' .$this->getHTMLDocHead() . ' ' . $this->getHTMLTableRows($rows, $vars) . '

'; } function getHTMLTableRows($rows, $vars) { $r = ''; foreach ($rows as $row) { $hr = ''; $rr = ''; foreach ($vars as $var) { $hr .= $r ? '' : '' . htmlspecialchars($var) . ''; $rr .= '' . @htmlspecialchars($row[$var]) . ''; } $r .= $hr ? '' . $hr . '' : ''; $r .= '' . $rr . ''; } return $r ? $r : 'No results found'; } function getTSVSelectResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain; charset=utf-8'); $vars = $r['result']['variables']; $rows = $r['result']['rows']; $dur = $r['query_time']; return $this->getTSVRows($rows, $vars); } function getTSVRows($rows, $vars) { $r = ''; $delim = "\t"; $esc_delim = "\\t"; foreach ($rows as $row) { $hr = ''; $rr = ''; foreach ($vars as $var) { $hr .= $r ? '' : ($hr ? $delim . $var : $var); $val = isset($row[$var]) ? str_replace($delim, $esc_delim, $row[$var]) : ''; $rr .= $rr ? $delim . $val : $val; } $r .= $hr . "\n" . $rr; } return $r ? $r : 'No results found'; } /* ASK */ function getAskResultDoc($r) { $formats = array( 'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON', 'plain' => 'Plain', 'php_ser' => 'PHPSER', 'sql' => ($this->allow_sql ? 'Plain' : 'xSQL'), 'infos' => 'Plain', ); if ($f = $this->getResultFormat($formats, 'xml')) { $m = 'get' . $f . 'AskResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getSPARQLXMLAskResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml'); $r_val = $r['result'] ? 'true' : 'false'; $dur = $r['query_time']; $nl = "\n"; return '' . '' . $nl . '' . $nl . ' ' . $nl . ' ' . $nl . ' ' . $nl . ' ' .$r_val. '' . $nl . '' . ''; } function getSPARQLJSONAskResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+json'); $r_val = $r['result'] ? 'true' : 'false'; $dur = $r['query_time']; $nl = "\n"; $r = '' . $nl . '{' . $nl . ' "head": {' . $nl . ' },' . $nl . ' "boolean" : ' . $r_val . $nl . '}' . ''; if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERAskResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainAskResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return $r['result'] ? 'true' : 'false'; } /* CONSTRUCT */ function getConstructResultDoc($r) { $formats = array( 'rdfxml' => 'RDFXML', 'rdf+xml' => 'RDFXML', 'json' => 'RDFJSON', 'rdf+json' => 'RDFJSON', 'turtle' => 'Turtle', 'x-turtle' => 'Turtle', 'rdf+n3' => 'Turtle', 'php_ser' => 'PHPSER', 'sql' => ($this->allow_sql ? 'Plain' : 'xSQL'), 'infos' => 'Plain', ); if ($f = $this->getResultFormat($formats, 'rdfxml')) { $m = 'get' . $f . 'ConstructResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getRDFXMLConstructResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/rdf+xml'); $index = $r['result']; $ser = ARC2::getRDFXMLSerializer($this->a); $dur = $r['query_time']; return $ser->getSerializedIndex($index) . "\n" . ''; } function getTurtleConstructResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/x-turtle'); $index = $r['result']; $ser = ARC2::getTurtleSerializer($this->a); $dur = $r['query_time']; return '# query time: ' . $dur . "\n" . $ser->getSerializedIndex($index); } function getRDFJSONConstructResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/json'); $index = $r['result']; $ser = ARC2::getRDFJSONSerializer($this->a); $dur = $r['query_time']; $r = $ser->getSerializedIndex($index); if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERConstructResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainConstructResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } /* DESCRIBE */ function getDescribeResultDoc($r) { $formats = array( 'rdfxml' => 'RDFXML', 'rdf+xml' => 'RDFXML', 'json' => 'RDFJSON', 'rdf+json' => 'RDFJSON', 'turtle' => 'Turtle', 'x-turtle' => 'Turtle', 'rdf+n3' => 'Turtle', 'php_ser' => 'PHPSER', 'sql' => ($this->allow_sql ? 'Plain' : 'xSQL'), 'infos' => 'Plain' ); if ($f = $this->getResultFormat($formats, 'rdfxml')) { $m = 'get' . $f . 'DescribeResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getRDFXMLDescribeResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/rdf+xml'); $index = $r['result']; $ser = ARC2::getRDFXMLSerializer($this->a); $dur = $r['query_time']; return $ser->getSerializedIndex($index) . "\n" . ''; } function getTurtleDescribeResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/x-turtle'); $index = $r['result']; $ser = ARC2::getTurtleSerializer($this->a); $dur = $r['query_time']; return '# query time: ' . $dur . "\n" . $ser->getSerializedIndex($index); } function getRDFJSONDescribeResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/json'); $index = $r['result']; $ser = ARC2::getRDFJSONSerializer($this->a); $dur = $r['query_time']; $r = $ser->getSerializedIndex($index); if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERDescribeResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainDescribeResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } /* DUMP */ function getDumpResultDoc() { $this->headers = array(); return ''; } /* LOAD */ function getLoadResultDoc($r) { $formats = array( 'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON', 'plain' => 'Plain', 'php_ser' => 'PHPSER', 'sql' => ($this->allow_sql ? 'Plain' : 'xSQL'), 'infos' => 'Plain', ); if ($f = $this->getResultFormat($formats, 'xml')) { $m = 'get' . $f . 'LoadResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getSPARQLXMLLoadResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; return '' . '' . $nl . '' . $nl . ' ' . $nl . ' ' . $nl . ' ' . $nl . ' ' .$r_val. '' . $nl . '' . ''; } function getSPARQLJSONLoadResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+json'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; $r = '' . $nl . '{' . $nl . ' "head": {' . $nl . ' },' . $nl . ' "inserted" : ' . $r_val . $nl . '}' . ''; if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERLoadResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainLoadResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } /* DELETE */ function getDeleteResultDoc($r) { $formats = array( 'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON', 'plain' => 'Plain', 'php_ser' => 'PHPSER' ); if ($f = $this->getResultFormat($formats, 'xml')) { $m = 'get' . $f . 'DeleteResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getSPARQLXMLDeleteResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; return '' . '' . $nl . '' . $nl . ' ' . $nl . ' ' . $nl . ' ' . $nl . ' ' .$r_val. '' . $nl . '' . ''; } function getSPARQLJSONDeleteResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+json'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; $r = '' . $nl . '{' . $nl . ' "head": {' . $nl . ' },' . $nl . ' "deleted" : ' . $r_val . $nl . '}' . ''; if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERDeleteResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainDeleteResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } /* INSERT */ function getInsertResultDoc($r) { $formats = array( 'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON', 'plain' => 'Plain', 'php_ser' => 'PHPSER' ); if ($f = $this->getResultFormat($formats, 'xml')) { $m = 'get' . $f . 'InsertResultDoc'; return method_exists($this, $m) ? $this->$m($r) : 'not implemented'; } return ''; } function getSPARQLXMLInsertResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; return '' . '' . $nl . '' . $nl . ' ' . $nl . ' ' . $nl . ' ' . $nl . ' ' .$r_val. '' . $nl . '' . ''; } function getSPARQLJSONInsertResultDoc($r) { $this->setHeader('content-type', 'Content-Type: application/sparql-results+json'); $r_val = $r['result']['t_count']; $dur = $r['query_time']; $nl = "\n"; $r = '' . $nl . '{' . $nl . ' "head": {' . $nl . ' },' . $nl . ' "inserted" : ' . $r_val . $nl . '}' . ''; if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) { $r = $v . '(' . $r . ')'; } return $r; } function getPHPSERInsertResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return serialize($r); } function getPlainInsertResultDoc($r) { $this->setHeader('content-type', 'Content-Type: text/plain'); return print_r($r['result'], 1); } /* */ function jsonEscape($v) { if (function_exists('json_encode')) return trim(json_encode($v), '"'); $from = array("\\", "\r", "\t", "\n", '"', "\b", "\f", "/"); $to = array('\\\\', '\r', '\t', '\n', '\"', '\b', '\f', '\/'); return str_replace($from, $to, $v); } /* */ function getHTMLFormDoc() { return ' ' . $this->getHTMLDocHead() . ' ' . $this->getHTMLDocBody() . ' '; } function getHTMLDocHead() { return ' ' . $this->getHTMLDocTitle() . ' '; } function getHTMLDocTitle() { return $this->v('endpoint_title', 'ARC SPARQL+ Endpoint', $this->a); } function getHTMLDocHeading() { return $this->v('endpoint_heading', 'ARC SPARQL+ Endpoint (v' . ARC2::getVersion() . ')', $this->a); } function getHTMLDocCSS() { $default = ' body { font-size: 14px; font-family: Trebuchet MS, Verdana, Geneva, sans-serif; background: #fff url(?img=bg_body) top center repeat-x; padding: 5px 20px 20px 20px; color: #666; } h1 { font-size: 1.6em; font-weight: normal; } a { color: #c00000; } th, td { border: 1px dotted #eee; padding: 2px 4px; } #sparql-form { margin-bottom: 30px; } #query { float: left; width: 60%; display: block; height: 265px; margin-bottom: 10px; } .options { float: right; font-size: 0.9em; width: 35%; border-top: 1px solid #ccc; } .options h3 { margin: 5px; } .options dl{ margin: 0px; padding: 0px 10px 5px 20px; } .options dl dt { border-top: 1px dotted #ddd; padding-top: 10px; } .options dl dt.first { border: none; } .options dl dd { padding: 5px 0px 7px 0px; } .options-2 { clear: both; margin: 10px 0px; } .form-buttons { } .results { border: 1px solid #eee; padding: 5px; background-color: #fcfcfc; } '; return $this->v('endpoint_css', $default, $this->a); } function getHTMLDocBody() { return '

' . $this->getHTMLDocHeading() . '

This interface implements SPARQL and SPARQL+ via HTTP Bindings.

Enabled operations: ' . join(', ', $this->getFeatures()) . '

Max. number of results : ' . $this->v('endpoint_max_limit', 'unrestricted', $this->a) . '

' . $this->getHTMLDocForm() .' ' . ($this->p('show_inline') ? $this->query_result : '') . ' '; } function getHTMLDocForm() { $q = $this->p('query') ? htmlspecialchars($this->p('query')) : "SELECT * WHERE {\n GRAPH ?g { ?s ?p ?o . }\n}\nLIMIT 10"; return ' '; } function getHTMLDocOptions() { $sel = $this->p('output'); $sel_code = ' selected="selected"'; return '

Options

Output format (if supported by query type):
jsonp/callback (for JSON results)
API key (if required)
Show results inline:: p('show_inline') ? ' checked="checked"' : '') . ' />

'; } /* */ }