/**
* This method takes a json encoded rdf-model and a reference to aa (usually empty) MemModel, parses the json
* string and adds the statements to the given MemModel.
*
* @param string $jsonString The string that contains the rdf model, encoded as a json-string.
* @param MemModel $model A reference to the model, where to add the statements, usually an empty MemModel.
*/
public function generateModelFromString($jsonString, $model)
{
$jsonModel = array();
$jsonModel = json_decode($jsonString, true);
// throws an excpetion if json model was corrupt
if (!is_array($jsonModel)) {
throw new Exception('error in json string');
}
foreach ($jsonModel as $subject => $remain) {
foreach ($remain as $predicate => $object) {
$s = strpos($subject, '_') === 0 ? new BlankNode(substr($subject, 2)) : new Resource($subject);
$p = new Resource($predicate);
foreach ($object as $obj) {
if ($obj['type'] === 'uri') {
$o = new Resource($obj['value']);
} else {
if ($obj['type'] === 'bnode') {
$o = new BlankNode(substr($obj['value'], 2));
} else {
$dtype = isset($obj['datatype']) ? $obj['datatype'] : '';
$lang = isset($obj['lang']) ? $obj['lang'] : '';
$oVal = $obj['value'];
$o = new Literal($oVal, $lang);
$o->setDatatype($dtype);
}
}
$model->add(new Statement($s, $p, $o));
}
}
}
}
function testGenerateModelFromString()
{
$parser = new JsonParser();
$model = new MemModel('http://example.com/');
try {
$parser->generateModelFromString($this->modelString, $model);
} catch (Exception $e) {
$this->fail($e->getMessage());
}
#echo "<pre>";
#print_r($model);
global $short_datatype;
$model2 = new MemModel('http://example.com/');
// Ceate new statements and add them to the model
$statement1 = new Statement(new Resource('http://example.org/about'), new Resource('http://purl.org/dc/elements/1.1/creator'), new Literal('Anna Wilder'));
$statement2 = new Statement(new Resource('http://example.org/about'), new Resource("http://purl.org/dc/elements/1.1/title"), new Literal('Annas Homepage', 'en'));
$statement3 = new Statement(new Resource('http://example.org/about'), new Resource('http://xmlns.com/foaf/0.1/maker'), new BlankNode('person'));
$statement4 = new Statement(new BlankNode('person'), new Resource("http://xmlns.com/foaf/0.1/homepage"), new Resource('http://example.org/about'));
$statement5 = new Statement(new Resource('http://example.org/about'), new Resource("http://purl.org/dc/elements/1.1/title2"), new Literal('Anns HP', 'en', $short_datatype['STRING']));
$statement6 = new Statement(new Resource('http://example.org/about'), new Resource("http://purl.org/dc/elements/1.1/title2"), new Literal('Anns HP', 'en', $short_datatype['INTEGER']));
$statement7 = new Statement(new BlankNode('person'), new Resource("http://example.com/testProp1"), new Literal("\"double quote\nnewline\ttab\rcarriage return\\reverse solidus"));
$model2->add($statement1);
$model2->add($statement2);
$model2->add($statement3);
$model2->add($statement4);
$model2->add($statement5);
$model2->add($statement7);
$this->assertTrue($model->containsAll($model2));
$model2->remove($statement5);
$model2->add($statement6);
$this->assertFalse($model->containsAll($model2));
#echo "<pre>";
#print_r($model2);
#echo "</pre>";
}
function _generateModel($num, $ind)
{
$model = new MemModel();
$model->index($ind);
for ($i = 0; $i < $num; $i++) {
$subs[$i] = new Resource('http://www.example.org/sub' . $i % 3);
$preds[$i] = new Resource('http://www.example.org/pred' . $i % 5);
$objs[$i] = new Resource('http://www.example.org/obj' . $i % 9);
$stat = new Statement($subs[$i], $preds[$i], $objs[$i]);
$model->add($stat);
}
return $model;
}
/**
* tests listSubjectsWithProperty()
*/
function testlistSubjectsWithPropertyTest()
{
$_SESSION['test'] = 'ResModel listSubjectsWithProperty test';
$model1 = new MemModel();
$needle = new Statement(new Resource('http://www.example.org/needle'), new Resource('http://www.example.org/pred'), new Resource('http://www.example.org/ob'));
$model1->add($needle);
$resmodel = new ResModel($model1);
$resresource = $resmodel->createResource('http://www.example.org/testresource');
$prop = $resmodel->createProperty('http://www.example.org/pred');
$resresource->addProperty($prop, new ResLiteral('Object'));
$property = new ResResource('http://www.example.org/pred');
$res = $resmodel->listSubjectsWithProperty($property);
$this->assertEqual(1, count($res));
$model1->close();
}
/**
* Create a MemModel containing only the base triples (without inferred
* statements) of the current InfModelB.
*
* @return object MemModel
* @access public
*/
function &getBaseMemModel()
{
$return = new MemModel();
$return->setBaseURI($this->baseURI);
foreach ($this->triples as $statement) {
$return->add($statement);
}
$retun->addParsedNamespaces($this->getParsedNamespaces());
return $return;
}
/**
* Create a MemModel containing only the base triples
* (without inferred statements) of the current InfModelF.
*
* @return object MemModel
* @access public
*/
function getBaseMemModel()
{
$return = new MemModel();
$return->setBaseURI($this->baseURI);
foreach ($this->triples as $key => $statement) {
if (!in_array($key, $this->infPos)) {
$return->add($statement);
}
}
$retun->addParsedNamespaces($this->getParsedNamespaces());
return $return;
}
function testNestBlankAtEnd()
{
$mod = new MemModel();
$b3 = new BlankNode($mod);
$mod->add(new Statement(new Resource('http://example.org/foo'), new Resource("http://example.org/bar2"), $b3));
$ser = new N3Serializer();
$ser->setCompress(true);
$ser->setNest(true);
$str = $ser->serialize($mod);
//test if it can be loaded
$par = new N3Parser();
$mod2 = $par->parse2model($str, false);
//var_dump($str, $mod2->triples);
$this->compareModelsIgnoringBlankNodes($mod, $mod2);
}
/**
*
*/
function &rewriteURIsInResDescrModel(&$rd_m)
{
global $_PUBBY_DATASET;
global $namespaces;
$rew_rd_m = new MemModel();
// uri rewriting + regex filtering
if ($_PUBBY_DATASET['datasetURIPattern'] != '') {
$l = strlen($_PUBBY_DATASET['datasetBase']);
$iter = $rd_m->getStatementIterator();
while ($iter->hasNext()) {
$triple = $iter->next();
$subj = $triple->getSubject();
// if subjURI is a datasetURI & does not match the pattern
if (stripos($subj->getURI(), $_PUBBY_DATASET['datasetBase']) === 0 && !preg_match($_PUBBY_DATASET['datasetURIPattern'], substr($subj->getURI(), $l))) {
continue;
} else {
// if predURI is a datasetURI & does not match the pattern
$pred = $triple->getPredicate();
if (stripos($pred->getURI(), $_PUBBY_DATASET['datasetBase']) === 0 && !preg_match($_PUBBY_DATASET['datasetURIPattern'], substr($pred->getURI(), $l))) {
continue;
} else {
// if obj is a Literal & objeURI is a datasetURI & does not match the pattern
$obj = $triple->getObject();
if (!is_a($obj, "Literal")) {
if (stripos($obj->getURI(), $_PUBBY_DATASET['datasetBase']) === 0 && !preg_match($_PUBBY_DATASET['datasetURIPattern'], substr($obj->getURI(), $l))) {
continue;
} else {
$obj = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($obj->getURI()));
}
}
$subj = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($subj->getURI()));
$pred = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($pred->getURI()));
$rew_rd_m->add(new Statement($subj, $pred, $obj));
}
}
}
} else {
$iter = $rd_m->getStatementIterator();
while ($iter->hasNext()) {
$triple = $iter->next();
$subj = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($triple->getSubject()->getURI()));
$pred = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($triple->getPredicate()->getURI()));
$obj = $triple->getObject();
if (!is_a($obj, "Literal")) {
$obj = new Resource(RAPpubbyURIrewriter::datasetURItoPubbyURI($obj->getURI()));
}
$rew_rd_m->add(new Statement($subj, $pred, $obj));
}
}
return $rew_rd_m;
}
/**
* finds a statement in an index. $pos is the Position in the index
* and $ind the adequate searchindex
*
* @param String $pos
* @param Object Subject &$subject
* @param Object Predicate &$predicate
* @param Object Object &$object
* @param int &ind
* @return MemModel $res
* @access private
*/
function _findInIndex($pos, &$subject, &$predicate, &$object, $ind)
{
$res = new MemModel($this->getBaseURI());
$res->indexed = -1;
if (!isset($this->indexArr[$ind][$pos])) {
return $res;
}
foreach ($this->indexArr[$ind][$pos] as $key => $value) {
$t = $this->triples[$value];
if ($this->matchStatement($t, $subject, $predicate, $object)) {
$res->add($t);
}
}
return $res;
}
function _generateModelLiteral($stats, $ind)
{
$model = new MemModel();
$model->index($ind);
for ($i = 0; $i < $stats; $i++) {
$subs[$i] = new Resource('http://www.example.org/sub' . $i % 3);
$preds[$i] = new Resource('http://www.example.org/pred' . $i % 5);
$objs[$i] = new Literal('http://www.example.org/obj' . $i % 9);
$objs[$i]->setDatatype('test');
}
for ($i = 0; $i < $stats; $i++) {
$model->add(new Statement($subs[$i], $preds[$i], $objs[$i]));
}
return $model;
}
private function addBookToModel(SimpleXMLElement $item, MemModel $model)
{
$itemresource = new Resource($this->uri);
// rdf:type
$model->add(new Statement($itemresource, new Resource(RDF_NAMESPACE_URI . RDF_TYPE), new Resource("http://sites.wiwiss.fu-berlin.de/suhl/bizer/bookmashup/simpleCommerceVocab01.rdf#Book")));
// homepage (link to details page @ amazon)
//$model->add(new Statement($itemresource ,new Resource("http://xmlns.com/foaf/0.1/homepage"),new Resource($item->DetailPageURL)));
// label
$model->add(new Statement($itemresource, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal((string) $item->ItemAttributes->Title)));
// date
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/date"), new Literal((string) $item->ItemAttributes->PublicationDate)));
// title
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/title"), new Literal((string) $item->ItemAttributes->Title)));
//large image
$model->add(new Statement($itemresource, new Resource("http://xmlns.com/foaf/0.1/depiction"), new Resource((string) $item->LargeImage->URL)));
// thumbnail
$model->add(new Statement($itemresource, new Resource("http://xmlns.com/foaf/0.1/thumbnail"), new Resource((string) $item->SmallImage->URL)));
// isbn
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/identifier"), new Resource("urn:ISBN:" . $item->ItemAttributes->ISBN)));
// publisher
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/publisher"), new Literal((string) $item->ItemAttributes->Label)));
// format
if (isset($item->ItemAttributes->format)) {
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/format"), new Literal((string) $item->ItemAttributes->format)));
}
if (isset($item->ItemAttributes->Binding)) {
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/format"), new Literal((string) $item->ItemAttributes->Binding)));
}
// reviews
$i = 1;
foreach ($item->EditorialReviews->EditorialReview as $index => $review) {
$newuri = str_replace("/books/", "/reviews/", $this->uri);
$pos = strrpos($newuri, "/");
$review = new Resource($newuri . "_" . $index . $i);
$model->add(new Statement($itemresource, new Resource("http://dannyayers.com/xmlns/rev/#hasReview"), $review));
$model->add(new Statement($review, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal("Review number " . $i . " about: " . $item->ItemAttributes->Title)));
$i++;
}
// author
$newuri = str_replace("/books/", "/persons/", $this->uri);
$pos = strrpos($newuri, "/");
if (isset($item->ItemAttributes->Author)) {
foreach ($item->ItemAttributes->Author as $k => $author) {
$authorUri = new Resource(substr($newuri, 0, $pos + 1) . urlencode($author));
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/creator"), $authorUri));
$model->add(new Statement($authorUri, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal((string) $author)));
}
}
// subject(s)
$newuri = str_replace("/books/", "/subject/", $this->uri);
$skosSubject = new Resource("http://www.w3.org/2004/02/skos/core#subject");
$pos = strrpos($newuri, "/");
if (isset($item->Subjects)) {
foreach ($item->Subjects as $k => $subjects) {
foreach ($subjects as $kk => $subject) {
$subjectUri = new Resource(substr($newuri, 0, $pos + 1) . urlencode($subject));
$model->add(new Statement($itemresource, $skosSubject, $subjectUri));
$model->add(new Statement($subjectUri, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal((string) $subject)));
}
}
}
if (isset($item->ItemAttributes->Creator)) {
foreach ($item->ItemAttributes->Creator as $key => $creator) {
$creatorUri = new Resource(substr($newuri, 0, $pos + 1) . urlencode($creator));
$model->add(new Statement($itemresource, new Resource("http://purl.org/dc/elements/1.1/creator"), $creatorUri));
$model->add(new Statement($creatorUri, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal((string) $creator)));
}
}
// amazon offer
$newuri = str_replace("/books/", "/offers/", $this->uri);
$pos = strrpos($newuri, "/");
$offer = new Resource($newuri . "amazonOffer");
$model->add(new Statement($itemresource, new Resource("http://sites.wiwiss.fu-berlin.de/suhl/bizer/bookmashup/simpleCommerceVocab01.rdf#hasOffer"), $offer));
$model->add(new Statement($offer, new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal("Offer for the book with the ISBN: " . $item->ItemAttributes->ISBN)));
// create OFFER from google
$this->addGoogleOffersToModel($model, $this->uri);
//
$model->add(new Statement(new Resource($this->document), new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal("RDF document about the book: " . $item->ItemAttributes->Title)));
}
// Include RAP
define("RDFAPI_INCLUDE_DIR", "./../api/");
include RDFAPI_INCLUDE_DIR . "RdfAPI.php";
// Filename of an RDF document
$base = "example1.rdf";
// Create a new MemModel
$model = new MemModel();
// Load and parse document
$model->load($base);
// Output model as HTML table
$model->writeAsHtmlTable();
echo "<P>";
// Ceate new statements and add them to the model
$statement1 = new Statement(new Resource("http://www.w3.org/Home/Lassila"), new Resource("http://description.org/schema/Description"), new Literal("Lassila's personal Homepage", "en"));
$statement2 = new Statement(new Resource("http://www.w3.org/Home/Lassila"), new Resource("http://description.org/schema/Description"), new Literal("Lassilas persönliche Homepage ", "de"));
$model->add($statement1);
$model->add($statement2);
$model->writeAsHtmlTable();
echo "<P>";
// Search model 1
$homepage = new Resource("http://www.w3.org/Home/Lassila");
$res = $model->find($homepage, NULL, NULL);
$res->writeAsHtmlTable();
echo "<P>";
// Search model 2
$description = new Resource("http://description.org/schema/Description");
$statement = $model->findFirstMatchingStatement($homepage, $description, NULL);
// Check if something was found and output result
if ($statement) {
echo $statement->toString();
} else {
/**
* Search the attributes listed in $list in the dataset.
* Modifies $resultGraph
*
* @param Array $list List containing the attributes
* @param MemModel $resultGraph The result graph which describes the Resource
* @return void
*/
protected function _getAttributes($list, $resultGraph, $varvalue)
{
if ($list) {
foreach ($list as $attribute) {
if (!$varvalue instanceof Literal) {
$iter2 = $this->dataset->findInNamedGraphs(null, $varvalue, new Resource($attribute), null, true);
while ($iter2->valid()) {
$resultGraph->add($iter2->current());
$iter2->next();
}
$iter3 = $this->dataset->findInDefaultGraph($varvalue, new Resource($attribute), null);
while ($iter3->valid()) {
$resultGraph->add($iter3->current());
$iter3->next();
}
}
}
}
}
/**
* Perform an RDQL query on this Model. Should work with all types of models.
* This method returns a MemModel containing the result statements.
* If $closure is set to TRUE, the result will additionally contain
* statements found by the findForward-method for blank nodes.
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* WARNING: If called with $closure = TRUE this method
* can be slow with large models.
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*
* @author Anton K�tlbacher <*****@*****.**>
* @author code snippets taken from the RAP Netapi by Phil Dawes and Chris Bizer
* @access public
* @param string $queryString
* @param boolean $closure
* @return object MemModel
*
*/
function &getMemModelByRDQL($queryString, $closure = FALSE)
{
require_once RDFAPI_INCLUDE_DIR . PACKAGE_RDQL;
$parser = new RdqlParser();
$parsedQuery =& $parser->parseQuery($queryString);
// If there are variables used in the pattern but not
// in the select clause, add them to the select clause
foreach ($parsedQuery['patterns'] as $n => $pattern) {
foreach ($pattern as $key => $val_1) {
if ($val_1['value'][0] == '?') {
if (!in_array($val_1['value'], $parsedQuery['selectVars'])) {
array_push($parsedQuery['selectVars'], $val_1['value']);
}
}
}
}
if (is_a($this, "DbModel")) {
$engine = new RdqlDbEngine();
$model = $this;
} elseif (is_a($this, "MemModel")) {
$engine = new RdqlMemEngine();
$model = $this;
} elseif (is_a($this, "ResModel")) {
$engine = new RdqlMemEngine();
$model = $this->model;
}
$res = $engine->queryModel($model, $parsedQuery, TRUE);
$rdqlIter = new RdqlResultIterator($res);
$newModel = new MemModel();
// Build statements from RdqlResultIterator
while ($rdqlIter->hasNext()) {
$result = $rdqlIter->next();
foreach ($parsedQuery['patterns'] as $n => $pattern) {
if (substr($pattern['subject']['value'], 0, 1) == '?') {
$subj = $result[$pattern['subject']['value']];
} else {
$subj = new Resource($pattern['subject']['value']);
}
if (substr($pattern['predicate']['value'], 0, 1) == '?') {
$pred = $result[$pattern['predicate']['value']];
} else {
$pred = new Resource($pattern['predicate']['value']);
}
if (substr($pattern['object']['value'], 0, 1) == '?') {
$obj = $result[$pattern['object']['value']];
} else {
if (isset($pattern['object']['is_literal'])) {
$obj = new Literal($pattern['object']['value']);
$obj->setDatatype($pattern['object']['l_dtype']);
$obj->setLanguage($pattern['object']['l_lang']);
} else {
$obj = new Resource($pattern['object']['value']);
}
}
$statement = new Statement($subj, $pred, $obj);
$newModel->add($statement);
// findForward() Statements containing an eventually given blank node
// and add them to the result, if closure = true
if (is_a($statement->object(), 'BlankNode') && $closure == True) {
$newModel = $model->findForward($statement->object(), NULL, NULL, $newModel);
}
if (is_a($statement->subject(), 'BlankNode') && $closure == True) {
$newModel = $model->findForward($statement->subject(), NULL, NULL, $newModel);
}
}
}
return $newModel;
}
<?php
define("RDFAPI_INCLUDE_DIR", "./../api/");
include RDFAPI_INCLUDE_DIR . "RdfAPI.php";
echo "<h3>1. Generate and show two MemModels</h3>";
// Create empty MemModel
$model = new MemModel();
$model->setbaseURI("http://www.bizer.de");
$model2 = new MemModel();
$model2->setbaseURI("http://www.bizer.de/zwei");
// Create nodes and add statements to models
$myhomepage = new Resource("http://www.bizer.de/welcome.html");
$creator = new Resource("http://purl.org/dc/elements/1.1/creator");
$me = new Resource("mailto:chris@bizer.de");
$model->add(new Statement($myhomepage, $creator, $me));
$model2->add(new Statement($myhomepage, $creator, $me));
$creation_date = new Resource("http://www.example.org/terms/creation-date");
$August16 = new Literal("August 16, 2002");
$model->add(new Statement($myhomepage, $creation_date, $August16));
$model2->add(new Statement($myhomepage, $creation_date, $August16));
$language = new Resource("http://www.example.org/terms/language");
$deutsch = new Literal("Deutsch", "de");
$model->add(new Statement($myhomepage, $language, $deutsch));
$name = new Resource("http://www.example.org/terms/Name");
$chrisbizer = new Literal("Chris Bizer");
$model2->add(new Statement($me, $name, $chrisbizer));
// Output as Table
echo "<h5>Model 1</h5>";
$model->writeAsHtmlTable();
echo "<h5>Model 2</h5>";
$model2->writeAsHtmlTable();
function _generateModelLiteral()
{
$model = new MemModel();
$model->setBaseURI('http://www.example.org');
$sub = new Resource('http://www.example.org/subject1');
$pred = new Resource('http://www.example.org/predicate1');
$obj = new Literal('http://www.example.org/object1');
$obj->setDatatype('test');
$obj->setLanguage('DE');
$model->add(new Statement($sub, $pred, $obj));
return $model;
}
/**
* Constructs a result graph.
*
* @param array $arVartable A table containing the result vars and their bindings
* @param GraphPattern $constructPattern The CONSTRUCT pattern
* @return MemModel The result graph which matches the CONSTRUCT pattern
*/
protected function constructGraph($arVartable, $constructPattern)
{
$resultGraph = new MemModel();
if (!$arVartable) {
return $resultGraph;
}
$tp = $constructPattern->getTriplePatterns();
$bnode = 0;
foreach ($arVartable as $value) {
foreach ($tp as $triple) {
$sub = $triple->getSubject();
$pred = $triple->getPredicate();
$obj = $triple->getObject();
if (is_string($sub) && $sub[1] == '_') {
$sub = new BlankNode("_bN" . $bnode);
}
if (is_string($pred) && $pred[1] == '_') {
$pred = new BlankNode("_bN" . $bnode);
}
if (is_string($obj) && $obj[1] == '_') {
$obj = new BlankNode("_bN" . $bnode);
}
if (is_string($sub)) {
$sub = $value[$sub];
}
if (is_string($pred)) {
$pred = $value[$pred];
}
if (is_string($obj)) {
$obj = $value[$obj];
}
if ($sub !== "" && $pred !== "" && $obj !== "") {
$resultGraph->add(new Statement($sub, $pred, $obj));
}
}
$bnode++;
}
return $resultGraph;
}
/**
* generates a test model containing given number of statements
* and given indextype.
*
* @return Object MemModel $model
* @param int $num
* @param int $des
* @param int $ind
* @param Object MemModel $needle
*/
function _generateModel($num, $des, $ind, $needle)
{
$model = new MemModel();
// generate Subjects
for ($i = 0; $i < $num; $i++) {
$subs[$i] = new Resource('http://www.example.org/Subject' . $i % 6);
}
// generate Predicates
for ($i = 0; $i < $num; $i++) {
$preds[$i] = new Resource('http://www.example.org/Predicate' . $i % 7);
}
// generate Objects
for ($i = 0; $i < $num; $i++) {
$objs[$i] = new Resource('http://www.example.org/Object' . $i % 5);
}
for ($i = 0; $i < $num; $i++) {
if ($i == 50) {
$model->add($needle);
}
$model->add(new Statement($subs[$i], $preds[$i], $objs[$i]));
}
$model->index($ind);
return $model;
}
/**
* Reifies a statement.
* Returns a new MemModel that is the reification of the statement.
* For naming the statement's bNode a Model or bNodeID must be passed to the method.
*
* @access public
* @param mixed &$model_or_bNodeID
* @return object model
*/
function &reify(&$model_or_bNodeID)
{
if (is_a($model_or_bNodeID, 'MemModel')) {
// parameter is model
$statementModel = new MemModel($model_or_bNodeID->getBaseURI());
$thisStatement = new BlankNode($model_or_bNodeID);
} else {
// parameter is bNodeID
$statementModel = new MemModel();
$thisStatement =& $model_or_bNodeID;
}
$RDFstatement = new Resource(RDF_NAMESPACE_URI . RDF_STATEMENT);
$RDFtype = new Resource(RDF_NAMESPACE_URI . RDF_TYPE);
$RDFsubject = new Resource(RDF_NAMESPACE_URI . RDF_SUBJECT);
$RDFpredicate = new Resource(RDF_NAMESPACE_URI . RDF_PREDICATE);
$RDFobject = new Resource(RDF_NAMESPACE_URI . RDF_OBJECT);
$statementModel->add(new Statement($thisStatement, $RDFtype, $RDFstatement));
$statementModel->add(new Statement($thisStatement, $RDFsubject, $this->getSubject()));
$statementModel->add(new Statement($thisStatement, $RDFpredicate, $this->getPredicate()));
$statementModel->add(new Statement($thisStatement, $RDFobject, $this->Object()));
return $statementModel;
}
function geoLookup($lat, $long, $radius, &$resultsLabel)
{
global $FLICKRSERVICE;
$resURI = DBPEDIA_URI_ROOT . wikipediaEncode($_REQUEST['item']);
$locationURI = FLICKRWRAPPR_LOCATION_URI_ROOT . $_REQUEST['lat'] . '/' . $_REQUEST['long'] . '/' . $_REQUEST['radius'];
$dataURI = FLICKRWRAPPR_LOCATION_DATA_URI_ROOT . $_REQUEST['lat'] . '/' . $_REQUEST['long'] . '/' . $_REQUEST['radius'];
/* Initialize result model */
$resultModel = new MemModel();
$resultModel->addNamespace('foaf', 'http://xmlns.com/foaf/0.1/');
$resultModel->addNamespace('dcterms', 'http://purl.org/dc/terms/');
$resultModel->addNamespace('rdfs', 'http://www.w3.org/2000/01/rdf-schema#');
//$resultModel->addNamespace('geonames', 'http://www.geonames.org/ontology#');
$resultModel->addNamespace('geo', 'http://www.w3.org/2003/01/geo/wgs84_pos#');
$resultModel->addNamespace('georss', 'http://www.georss.org/georss/');
/* Perform flickr search */
$flickrPhotos = $FLICKRSERVICE->getFlickrPhotos('', $lat, $long, $radius / 1000);
/* Process found photos */
foreach ($flickrPhotos as $flickrPhoto) {
/* Provide the picture itself (small version) */
$resultModel->add(new Statement(new Resource($locationURI), new Resource("http://xmlns.com/foaf/0.1/depiction"), new Resource($flickrPhoto['imgsmall'])));
/* Provide its page on flickr */
$resultModel->add(new Statement(new Resource($flickrPhoto['imgsmall']), new Resource("http://xmlns.com/foaf/0.1/page"), new Resource($flickrPhoto['flickrpage'])));
}
if ($resultModel->size() > 0) {
/* Add metadata for location */
$resultModel->add(new Statement(new Resource($locationURI), new Resource("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"), new Resource("http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing")));
$latLiteral = new Literal($lat);
$latLiteral->setDatatype("http://www.w3.org/2001/XMLSchema#float");
$resultModel->add(new Statement(new Resource($locationURI), new Resource("http://www.w3.org/2003/01/geo/wgs84_pos#lat"), $latLiteral));
$longLiteral = new Literal($long);
$longLiteral->setDatatype("http://www.w3.org/2001/XMLSchema#float");
$resultModel->add(new Statement(new Resource($locationURI), new Resource("http://www.w3.org/2003/01/geo/wgs84_pos#long"), $longLiteral));
$radiusLiteral = new Literal($radius);
$radiusLiteral->setDatatype("http://www.w3.org/2001/XMLSchema#double");
$resultModel->add(new Statement(new Resource($locationURI), new Resource("http://www.georss.org/georss/radius"), $radiusLiteral));
/* Add metadata for document */
$resultModel->add(new Statement(new Resource($dataURI), new Resource("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"), new Resource("http://xmlns.com/foaf/0.1/Document")));
$resultsLabel = "Photos taken within {$radius} meters of geographic location lat={$lat} long={$long}";
$resultModel->add(new Statement(new Resource($dataURI), new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal($resultsLabel, "en")));
$resultModel->add(new Statement(new Resource($dataURI), new Resource("http://xmlns.com/foaf/0.1/primaryTopic"), new Resource($locationURI)));
$resultModel->add(new Statement(new Resource($dataURI), new Resource("http://purl.org/dc/terms/license"), new Resource(FLICKR_TOS_URL)));
$resultModel->add(new Statement(new Resource($dataURI), new Resource("http://xmlns.com/foaf/0.1/maker"), new Resource(FLICKRWRAPPR_HOMEPAGE)));
$resultModel->add(new Statement(new Resource(FLICKRWRAPPR_HOMEPAGE), new Resource("http://www.w3.org/2000/01/rdf-schema#label"), new Literal("flickr(tm) wrappr", "en")));
}
return $resultModel;
}
/**
* SPO (also known as "Triples" or "find(spo)") is an experimental minimal query language.
* An SPO query is a single triple pattern, with optional subject (parameter "s"), predicate (parameter "p"),
* and object (parameter "o", if a URIref, parameter "v" for a string literal).
* Absence of a parameter implies "any" for matching that slot of the triple pattern.
*
* @version $Id: spo.php 268 2006-05-15 05:28:09Z tgauss $
* @author Chris Bizer <*****@*****.**>
* @author Phil Dawes <*****@*****.**>
*
* @package netapi
* @todo Support typed literals.
* @access public
*/
function spoQuery($model, $serializer, $remove = false, $modelId = false)
{
// Get SPO query from HTTP request
if (isset($_REQUEST['s'])) {
$subject = new Resource($_REQUEST['s']);
} else {
$subject = NULL;
}
if (isset($_REQUEST['p'])) {
$predicate = new Resource($_REQUEST['p']);
} else {
$predicate = NULL;
}
if (isset($_REQUEST['o'])) {
$object = new Resource($_REQUEST['o']);
} else {
if (isset($_REQUEST['v'])) {
$object = new Literal($_REQUEST['v']);
} else {
$object = NULL;
}
}
if (isset($_REQUEST['closure'])) {
if (strtoupper($_REQUEST['closure']) == "TRUE") {
$closure = True;
} else {
$closure = False;
}
} else {
$closure = False;
}
$outm = new MemModel();
$resultmodel = $model->find($subject, $predicate, $object);
$it = $resultmodel->getStatementIterator();
while ($it->hasNext()) {
$stmt = $it->next();
if ($remove) {
$model->remove($stmt);
} else {
$outm->add(new Statement($stmt->subject(), $stmt->predicate(), $stmt->object()));
if (is_a($stmt->object(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->object(), $model, $outm);
}
if (is_a($stmt->subject(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->subject(), $model, $outm);
}
}
}
if ($remove) {
if (substr($modelId, 0, 5) == "file:") {
$model->saveAs(substr($modelId, 5));
}
if ($resultmodel->size() > 0) {
header('200 - OK');
echo "200 - OK";
} else {
echo "No matching statements";
}
} else {
echo $serializer->Serialize($outm);
}
$outm->close();
}
/**
* Convert an ADORecordSet to a memory Model.
*
* Every successful database query returns an ADORecordSet object which is actually
* a cursor that holds the current row in the array fields[].
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* !!! This method can only be applied to a RecordSet with array fields[]
* !!! containing a representation of the database table: statements,
* !!! with an index corresponding to following table columns:
* !!! [0] - subject, [1] - predicate, [2] - object, [3] - l_language,
* !!! [4] - l_datatype, [5] - subject_is, [6] - object_is
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*
* @param object ADORecordSet
* @return object MemModel
* @access private
*/
function _convertRecordSetToMemModel(&$recordSet)
{
$res = new MemModel($this->baseURI);
while (!$recordSet->EOF) {
// subject
if ($recordSet->fields[5] == 'r') {
$sub = new Resource($recordSet->fields[0]);
} else {
$sub = new BlankNode($recordSet->fields[0]);
}
// predicate
$pred = new Resource($recordSet->fields[1]);
// object
if ($recordSet->fields[6] == 'r') {
$obj = new Resource($recordSet->fields[2]);
} elseif ($recordSet->fields[6] == 'b') {
$obj = new BlankNode($recordSet->fields[2]);
} else {
$obj = new Literal($recordSet->fields[2], $recordSet->fields[3]);
if ($recordSet->fields[4]) {
$obj->setDatatype($recordSet->fields[4]);
}
}
$statement = new Statement($sub, $pred, $obj);
$res->add($statement);
$recordSet->moveNext();
}
$res->addParsedNamespaces($this->getParsedNamespaces());
return $res;
}
/**
* Adds a new triple to the Model without checking if the statement
* is already in the Model.
* So if you want a duplicate free MemModel use the addWithoutDuplicates()
* function (which is slower then add())
* If the statement's predicate label is supported by the inference,
* the matching rules are added.
*
* @param object Statement $statement
* @access public
* @throws PhpError
*/
function add($statement)
{
parent::add($statement);
//if the predicate is supported by the inference
if (in_array($statement->getLabelPredicate(), $this->supportedInference)) {
$this->_addToInference($statement);
}
}
function testA()
{
$n3 = '@prefix : <http://example.org/#> .
:foo a :bar .
';
$parser =& new N3Parser();
//$parser->debug = true;
$model =& $parser->parse2model($n3, false);
$model2 = new MemModel();
$model2->add(new Statement(new Resource("http://example.org/#foo"), new Resource("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"), new Resource("http://example.org/#bar")));
//var_dump($model->triples);
$this->assertEqual(1, $model->size());
$this->assertTrue($model->containsAll($model2));
}
