// Process RDF
// (if submitted and RDF smaller than 10000 chars)
/////////////////////////////////////////////////////////////////
define("RDFAPI_INCLUDE_DIR", "../api/");
include RDFAPI_INCLUDE_DIR . "RdfAPI.php";
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RDF;
include_once RDFAPI_INCLUDE_DIR . PACKAGE_UTILITY;
// Prepare RDF
$rdfInput = stripslashes($_POST['RDF']);
// Show the submitted RDF
echo "<BR><H3>Your original RDF input:</h3><BR>";
echo_string_with_linenumbers($rdfInput);
// Create a new MemModel
//$model = new MemModel();
// Load and parse document
$parser = new RdfParser();
// Set the base URI of the model
//$model->setBaseURI("http://www3.wiwiss.fu-berlin.de/DemoModel#");
$rdfBaseURI = 'http://www.wiwiss.fu-berlin.de/suhl/bizer/resource02.rdf';
$model =& $parser->generateModel($rdfInput, $rdfBaseURI);
// Execute query on model if submitted
if ($_POST['query_subject'] != '' or $_POST['query_predicate'] != '' or $_POST['query_object'] != '') {
$comment_string = "<BR><H3>The following query has been executed:</H3><BR>";
$query_subj = NULL;
$query_pred = NULL;
$query_obj = NULL;
if ($_POST['query_subject'] != '') {
if ($_POST['subject_kind'] == 'resource') {
$query_subj = new Resource($_POST['query_subject']);
} else {
$query_subj = new BlankNode($_POST['query_subject']);
function _generateRDF()
{
$model = new MemModel();
$model->setBaseURI($this->doclink);
$proc = new xsltprocessor();
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RDF;
$pars = new RdfParser();
foreach ($this->stylelink as $key => $value) {
$xsl = new DomDocument();
$xsl->load($value);
$proc->importStyleSheet($xsl);
$model->addModel($pars->generateModel($proc->transformToXML($this->domdoc), $this->doclink));
}
return $model;
}
/**
* Returns the query result.
*
* @param String $result the result.
* @return mixed
*/
function returnResult($result)
{
if (strpos($result, "<rdf:RDF")) {
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RDF;
$parser = new RdfParser();
return $parser->generateModel(substr($result, strpos($result, "<rdf:RDF")));
}
if ($this->output == "xml") {
$pos = strpos($result, "<?xml");
return substr($result, $pos);
}
if ($this->output == "array") {
// $pos = strpos($buffer,"<?xml");
return $this->parseResult($result);
}
return $result;
}
/**
* Load a model from a file containing RDF, N3, N-Triples or a xhtml document containing RDF.
* This function recognizes the suffix of the filename (.n3 or .rdf) and
* calls a suitable parser, if no $type is given as string ("rdf" "n3" "nt");
* If the model is not empty, the contents of the file is added to this DbModel.
*
* @param string $filename
* @param string $type
* @param boolean $stream
* @access public
*/
function load($filename, $type = NULL, $stream = false)
{
if (isset($type) && $type == 'n3' or $type == 'nt') {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_N3;
$parser = new N3Parser();
} elseif (isset($type) && $type == 'rdf') {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RDF;
$parser = new RdfParser();
} elseif (isset($type) && $type == 'grddl') {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_GRDDL;
$parser = new GRDDLParser();
} elseif (isset($type) && $type == 'rss') {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RSS;
$parser = new RssParser();
} else {
// create a parser according to the suffix of the filename
// if there is no suffix assume the file to be XML/RDF
preg_match("/\\.([a-zA-Z0-9_]+)\$/", $filename, $suffix);
if (isset($suffix[1]) && (strtolower($suffix[1]) == 'n3' or strtolower($suffix[1]) == 'nt')) {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_N3;
$parser = new N3Parser();
} elseif (isset($suffix[1]) && (strtolower($suffix[1]) == 'htm' or strtolower($suffix[1]) == 'html' or strtolower($suffix[1]) == 'xhtml')) {
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_GRDDL;
$parser = new GRDDLParser();
} else {
// Import Package Syntax
include_once RDFAPI_INCLUDE_DIR . PACKAGE_SYNTAX_RDF;
$parser = new RdfParser();
}
}
if ($stream && $type == 'rdf' || $stream && $type == 'n3') {
$temp =& $parser->generateModel($filename, false, $this);
} else {
$temp =& $parser->generateModel($filename);
}
$this->addModel($temp);
if ($this->getBaseURI() == null) {
$this->setBaseURI($temp->getBaseURI());
}
}
$m->addModel($m2);
print "Read " . $_FILES["rdffile"]["size"] . " bytes and " . count($m2->triples) . " triples.<br/></p>\n";
}
if (isset($_REQUEST["rdfuri"])) {
$u = $_REQUEST["rdfuri"];
print "<h1>Downloading {$u}</h1>\n";
if (isset($PROXYHOST)) {
$a = getthroughproxy($u, $PROXYHOST, $PROXYPORT);
$f = tempnam();
$fp = fopen($f);
fputs($fp, $a["content"]);
fclose($fp);
} else {
$f = $u;
}
$ri = new RdfParser();
$m2 = $ri->generateModel($f);
$m->addModel($m2);
print "Read " . count($m2->triples) . " triples.</br></p>\n";
}
if (isset($_REQUEST["tripleadd"])) {
print "<h1>Adding...</h1>\n";
if (isset($_REQUEST["bnode"])) {
$s = $_REQUEST["subject"] != "" ? new BlankNode($_REQUEST["subject"]) : null;
} else {
$s = $_REQUEST["subject"] != "" ? new Resource($_REQUEST["subject"]) : null;
}
$p = $_REQUEST["predicate"] != "" ? new Resource($_REQUEST["predicate"]) : null;
if (isset($_REQUEST["literal"])) {
$o = $_REQUEST["object"] != "" ? new Literal($_REQUEST["object"]) : null;
} else {
<?php
require dirname(__FILE__) . "/../../rdfphp-api/api/RdfPHP.php";
if (!defined("RSS_FILE")) {
define("RSS_FILE", "recentchanges.rss");
}
$parser = new RdfParser();
$model = $parser->generateModel(RSS_FILE);
$rdql_query = '
SELECT ?givenName, ?age
WHERE
(?x, <v:age>, ?age),
(?x, <vcard:N>, ?blank),
(?blank, <vcard:Given>, ?givenName)
USING
vcard FOR <http://www.w3.org/2001/vcard-rdf/3.0#>
rss FOR <http://purl.org/rss/1.0#>
v FOR <http://sampleVocabulary.org/1.3/People#>';
// query the model
$res = $model->rdqlQuery($rdql_query);
// show result
RdqlEngine::writeQueryResultAsHtmlTable($res);
