public function testBuildLiteralString()
{
$literals = array(array('"false"^^<http://www.w3.org/2001/XMLSchema#boolean>', 'false', 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"false"^^<http://www.w3.org/2001/XMLSchema#boolean>', '0', 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"false"^^<http://www.w3.org/2001/XMLSchema#boolean>', false, 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"true"^^<http://www.w3.org/2001/XMLSchema#boolean>', 'true', 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"true"^^<http://www.w3.org/2001/XMLSchema#boolean>', '1', 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"true"^^<http://www.w3.org/2001/XMLSchema#boolean>', true, 'http://www.w3.org/2001/XMLSchema#boolean', null, true), array('"123456789"^^<http://www.w3.org/2001/XMLSchema#int>', '123456789', 'http://www.w3.org/2001/XMLSchema#int', null, true), array('"1234.56789"^^<http://www.w3.org/2001/XMLSchema#float>', '1234.56789', 'http://www.w3.org/2001/XMLSchema#float', null, true), array('"Hallo"@de', 'Hallo', null, 'de', true), array('"Hello"@en-US', 'Hello', null, 'en-US', true), array('"Mit Backslash \\\\ im Text"^^<http://www.w3.org/2001/XMLSchema#string>', 'Mit Backslash \\ im Text', 'http://www.w3.org/2001/XMLSchema#string', null, true), array("\"\"\"This\nis\na\nmulti\nline\ntext\"\"\"^^<http://www.w3.org/2001/XMLSchema#string>", "This\nis\na\nmulti\nline\ntext", 'http://www.w3.org/2001/XMLSchema#string', null, true), array("\"\"\"This\nis\na\nmulti\nline\ntext with\\\\backslash\"\"\"^^<http://www.w3.org/2001/XMLSchema#string>", "This\nis\na\nmulti\nline\ntext with\\backslash", 'http://www.w3.org/2001/XMLSchema#string', null, true), array("'''This\nis\na\n\"\"\"multi\nline\"\"\"\ntext'''^^<http://www.w3.org/2001/XMLSchema#string>", "This\nis\na\n\"\"\"multi\nline\"\"\"\ntext", 'http://www.w3.org/2001/XMLSchema#string', null, true), array('"This\\nis\\na\\nmulti\\nline\\ntext"^^<http://www.w3.org/2001/XMLSchema#string>', "This\nis\na\nmulti\nline\ntext", 'http://www.w3.org/2001/XMLSchema#string', null, false), array('"Literal with\\tTab"^^<http://www.w3.org/2001/XMLSchema#string>', "Literal with\tTab", 'http://www.w3.org/2001/XMLSchema#string', null, true));
foreach ($literals as $literalDesc) {
$literal = $literalDesc[0];
$value = $literalDesc[1];
$datatype = $literalDesc[2];
$lang = $literalDesc[3];
$longString = $literalDesc[4];
$this->assertEquals($literal, Erfurt_Utils::buildLiteralString($value, $datatype, $lang, $longString));
}
}
/**
* Returns an array of predicate values for the current resource.
* The array is indexed with the predicate's URIs.
*
* @return array
*/
public function getValues()
{
if (null === $this->_valueResults) {
$this->_valueResults = array();
// get results
$results = $this->getQueryResults();
// load predicates first
$this->getPredicates();
// URL object to build URLs
$url = new OntoWiki_Url(array('route' => 'properties'), array('r'));
// keep track of URI objects already used
$objects = array();
foreach ($results as $graph => $resultsForGraph) {
$this->_valueResults[$graph] = array();
foreach ($resultsForGraph as $row) {
$predicateUri = $row['predicate']['value'];
if (!array_key_exists($predicateUri, $objects)) {
$objects[$predicateUri] = array();
}
// create space for value information if not exists
if (!array_key_exists($predicateUri, $this->_valueResults[$graph])) {
$this->_valueResults[$graph][$predicateUri] = array();
}
// default values
$value = array('content' => null, 'object' => null, 'object_hash' => null, 'datatype' => null, 'lang' => null, 'url' => null, 'uri' => null, 'curi' => null);
switch ($row['object']['type']) {
case 'uri':
// every URI objects is only used once for each statement
if (in_array($row['object']['value'], $objects[$predicateUri])) {
continue;
}
// URL
$url->setParam('r', $row['object']['value'], true);
$value['url'] = (string) $url;
// URI
$value['uri'] = $row['object']['value'];
// title
$title = $this->_titleHelper->getTitle($row['object']['value']);
/**
* @trigger onDisplayObjectPropertyValue Triggered if an object value of some
* property is returned. Plugins can attach to this trigger in order to modify
* the value that gets displayed.
* Event payload: value, property, title and link
*/
// set up event
$event = new Erfurt_Event('onDisplayObjectPropertyValue');
$event->value = $row['object']['value'];
$event->property = $predicateUri;
$event->title = $title;
$event->link = (string) $url;
// trigger
$value['object'] = $event->trigger();
if (!$event->handled()) {
// object (modified by plug-ins)
$value['object'] = $title;
}
array_push($objects[$predicateUri], $row['object']['value']);
break;
case 'typed-literal':
$event = new Erfurt_Event('onDisplayLiteralPropertyValue');
$value['datatype'] = OntoWiki_Utils::compactUri($row['object']['datatype']);
$literalString = Erfurt_Utils::buildLiteralString($row['object']['value'], $row['object']['datatype']);
$value['object_hash'] = md5($literalString);
$event->value = $row['object']['value'];
$event->datatype = $row['object']['datatype'];
$event->property = $predicateUri;
$value['object'] = $event->trigger();
// keep unmodified value in content
$value['content'] = $row['object']['value'];
if (!$event->handled()) {
// object (modified by plug-ins)
$value['object'] = $row['object']['value'];
}
break;
case 'literal':
// original (unmodified) for RDFa
$value['content'] = $row['object']['value'];
$literalString = Erfurt_Utils::buildLiteralString($row['object']['value'], null, isset($row['object']['xml:lang']) ? $row['object']['xml:lang'] : null);
$value['object_hash'] = md5($literalString);
/**
* @trigger onDisplayLiteralPropertyValue Triggered if a literal value of some
* property is returned. Plugins can attach to this trigger in order to modify
* the value that gets displayed.
*/
$event = new Erfurt_Event('onDisplayLiteralPropertyValue');
$event->value = $row['object']['value'];
$event->property = $predicateUri;
// set literal language
if (isset($row['object']['xml:lang'])) {
$value['lang'] = $row['object']['xml:lang'];
$event->language = $row['object']['xml:lang'];
}
// trigger
$value['object'] = $event->trigger();
// keep unmodified value in content
$value['content'] = $row['object']['value'];
// set default if event has not been handled
if (!$event->handled()) {
$value['object'] = $row['object']['value'];
}
break;
}
// push it only if it doesn't exceed number of items to display
if (count($this->_valueResults[$graph][$predicateUri]) < $this->_limit) {
array_push($this->_valueResults[$graph][$predicateUri], $value);
} else {
$this->_predicateResults[$graph][$predicateUri]['has_more'] = true;
}
if (count($this->_valueResults[$graph][$predicateUri]) > 1) {
// create the "has more link" (used for area context menu as well)
// do it only once per predicate
if (!isset($this->_predicateResults[$graph][$predicateUri]['has_more_link'])) {
//when all values are literal, we dont use a link to the list,but to the query editor
$allValuesAreLiterals = true;
foreach ($this->_valueResults[$graph][$predicateUri] as $value) {
if (isset($value['uri'])) {
$allValuesAreLiterals = false;
}
}
if (!$allValuesAreLiterals) {
$hasMoreUrl = new OntoWiki_Url(array('route' => 'instances', 'action' => 'list'), array());
$filterExp = json_encode(array('filter' => array(array('action' => 'add', 'mode' => 'box', 'id' => 'allvalues', 'property' => $predicateUri, 'isInverse' => true, 'propertyLabel' => "value", 'filter' => 'equals', 'value1' => $this->_uri, 'value2' => null, 'valuetype' => 'uri', 'literaltype' => null, 'hidden' => false))));
$hasMoreUrl->setParam('instancesconfig', $filterExp)->setParam('init', true);
} else {
$hasMoreUrl = new OntoWiki_Url(array('controller' => 'queries', 'action' => 'editor'), array());
$hasMoreUrl->setParam('query', 'SELECT ?value WHERE {<' . $this->_uri . '> <' . $predicateUri . '> ?value}')->setParam('immediate', true);
}
$this->_predicateResults[$graph][$predicateUri]['has_more_link'] = (string) $hasMoreUrl;
}
}
}
}
return $this->_valueResults;
}
}
protected function _findStatementsForObjectsWithHashes($graphUri, $indexWithHashedObjects, $hashFunc = 'md5')
{
$queryOptions = array('result_format' => 'extended');
$result = array();
foreach ($indexWithHashedObjects as $subject => $predicates) {
foreach ($predicates as $predicate => $hashedObjects) {
$query = "SELECT ?o FROM <{$graphUri}> WHERE {<{$subject}> <{$predicate}> ?o .}";
$queryObj = Erfurt_Sparql_SimpleQuery::initWithString($query);
if ($queryResult = $this->_owApp->erfurt->getStore()->sparqlQuery($queryObj, $queryOptions)) {
$bindings = $queryResult['results']['bindings'];
for ($i = 0, $max = count($bindings); $i < $max; $i++) {
$currentObject = $bindings[$i]['o'];
$objectString = Erfurt_Utils::buildLiteralString($currentObject['value'], isset($currentObject['datatype']) ? $currentObject['datatype'] : null, isset($currentObject['xml:lang']) ? $currentObject['xml:lang'] : null);
$hash = $hashFunc($objectString);
if (in_array($hash, $hashedObjects)) {
// add current statement to result
if (!isset($result[$subject])) {
$result[$subject] = array();
}
if (!isset($result[$subject][$predicate])) {
$result[$subject][$predicate] = array();
}
$objectSpec = array('value' => $currentObject['value'], 'type' => str_replace('typed-', '', $currentObject['type']));
if (isset($currentObject['datatype'])) {
$objectSpec['datatype'] = $currentObject['datatype'];
} else {
if (isset($currentObject['xml:lang'])) {
$objectSpec['lang'] = $currentObject['xml:lang'];
}
}
array_push($result[$subject][$predicate], $objectSpec);
}
}
}
}
}
return $result;
}
/**
* Adds a prefix for the namespace URI in a given graph.
*
* @param Erfurt_Rdf_Model|string $graph
* @param string $namespace
* @param string $prefix
* @throws Erfurt_Namespaces_Exception
*/
public function addNamespacePrefix($graph, $namespace, $prefix)
{
// safety
$prefix = (string) $prefix;
$namespace = (string) $namespace;
//lowercase prefix always (for best compatibility)
$prefix = strtolower($prefix);
$graphPrefixes = $this->getNamespacesForGraph($graph);
// check if namespace is a valid URI
require_once 'Erfurt/Uri.php';
if (!Erfurt_Uri::check($namespace)) {
require_once 'Erfurt/Namespaces/Exception.php';
throw new Erfurt_Namespaces_Exception("Given namespace '{$namespace}' is not a valid URI.");
}
// check if prefix is a valid XML name
require_once 'Erfurt/Utils.php';
if (!Erfurt_Utils::isXmlPrefix($prefix)) {
require_once 'Erfurt/Namespaces/Exception.php';
throw new Erfurt_Namespaces_Exception("Given prefix '{$prefix}' is not a valid XML name.");
}
// check if prefix matches a URI scheme (http://www.iana.org/assignments/uri-schemes.html)
if (array_key_exists($prefix, $this->_reservedNames)) {
require_once 'Erfurt/Namespaces/Exception.php';
throw new Erfurt_Namespaces_Exception("Reserved name '{$prefix}' cannot be used as a namespace prefix.");
}
// check for existence of prefixes
if (array_key_exists($prefix, $graphPrefixes)) {
require_once 'Erfurt/Namespaces/Exception.php';
throw new Erfurt_Namespaces_Exception("Prefix '{$prefix}' already exists.");
}
// check for multiple prefixes
if (!$this->_allowMultiplePrefixes and array_key_exists($namespace, array_flip($graphPrefixes))) {
require_once 'Erfurt/Namespaces/Exception.php';
throw new Erfurt_Namespaces_Exception("Multiple prefixes for namespace '{$namespace}' not allowed.");
}
// add new prefix
$graphPrefixes[$prefix] = $namespace;
// save new set of prefixes
$this->setNamespacesForGraph($graph, $graphPrefixes);
}
/**
* Builds a SPARQL-compatible literal string with long literals if necessary.
*
* @param string $value
* @param string|null $datatype
* @param string|null $lang
* @param boolean $longStringEnabled decides if the output can be a long string (""" """) or not
* @return string
*/
public function buildLiteralString($value, $datatype = null, $lang = null, $longStringEnabled = true)
{
// This is a Virtuoso commercial edition feature... If we are running on open-source version, we remove the
// datatype, since otherwise loading will fail.
if ($this->_isOpenSourceVersion) {
if ($datatype === 'http://www.openlinksw.com/schemas/virtrdf#Geometry') {
$datatype = null;
}
}
return Erfurt_Utils::buildLiteralString($value, $datatype, $lang, $longStringEnabled);
}
