/**
* if the selected resources changed (due to filters or limit or offset)
* we have to change the value query as well (because the resources are mentioned as subjects)
*
* @return OntoWiki_Model_Instances $this
*/
protected function updateValueQuery()
{
if ($this->_valueQueryUptodate) {
return $this;
}
$resources = $this->getShownResources();
foreach ($resources as $key => $resource) {
$resources[$key] = new Erfurt_Sparql_Query2_SameTerm($this->_resourceVar, new Erfurt_Sparql_Query2_IriRef($resource['value']));
}
if ($this->_valueQueryResourceFilter == null) {
$this->_valueQueryResourceFilter = new Erfurt_Sparql_Query2_Filter(new Erfurt_Sparql_Query2_BooleanLiteral(false));
$this->_valueQuery->addElement($this->_valueQueryResourceFilter);
}
$this->_valueQueryResourceFilter->setConstraint(empty($resources) ? new Erfurt_Sparql_Query2_BooleanLiteral(false) : new Erfurt_Sparql_Query2_ConditionalOrExpression($resources));
//fix for a strange issue where a query with only optionals fails
//(but there is a magic/unkown condition, that makes it work for some queries!?)
//if($this->_store->getBackendName() == 'ZendDb'){
$hasTriple = false;
foreach ($this->_valueQuery->getWhere()->getElements() as $element) {
if ($element instanceof Erfurt_Sparql_Query2_IF_TriplesSameSubject) {
$hasTriple = true;
break;
}
}
if (!$hasTriple) {
$this->_valueQuery->getWhere()->addElement(new Erfurt_Sparql_Query2_Triple($this->_resourceVar, new Erfurt_Sparql_Query2_Var('p'), new Erfurt_Sparql_Query2_Var('o')));
}
//}
//remove duplicate triples...
$this->_valueQuery->optimize();
$this->_valueQueryUptodate = true;
return $this;
}
protected function _buildStringSearchQuery($setup)
{
// define vars
$searchVar = new Erfurt_Sparql_Query2_Var('resourceUri');
$subVar = new Erfurt_Sparql_Query2_Var('sub');
// define query
$query = new Erfurt_Sparql_Query2();
$query->addProjectionVar($searchVar);
$query->setDistinct();
// init union var
$union = new Erfurt_Sparql_Query2_GroupOrUnionGraphPattern();
// parse config
if (isset($setup->config->hierarchyRelations->out)) {
foreach ($setup->config->hierarchyRelations->out as $rel) {
// create new graph pattern
$groupPattern = new Erfurt_Sparql_Query2_GroupGraphPattern();
// add triplen
$groupPattern->addTriple($searchVar, new Erfurt_Sparql_Query2_IriRef($rel), $subVar);
// add triplet to union var
$union->addElement($groupPattern);
}
}
// parse config
if (isset($setup->config->hierarchyRelations->in)) {
foreach ($setup->config->hierarchyRelations->in as $rel) {
// create new graph pattern
$groupPattern = new Erfurt_Sparql_Query2_GroupGraphPattern();
// add triplen
$groupPattern->addTriple($subVar, new Erfurt_Sparql_Query2_IriRef($rel), $searchVar);
// add triplet to union var
$union->addElement($groupPattern);
}
}
// parse config
if (isset($setup->config->instanceRelation->out)) {
foreach ($setup->config->instanceRelation->out as $rel) {
// create new graph pattern
$groupPattern = new Erfurt_Sparql_Query2_GroupGraphPattern();
// add triplen
$groupPattern->addTriple($subVar, new Erfurt_Sparql_Query2_IriRef($rel), $searchVar);
// add triplet to union var
$union->addElement($groupPattern);
}
}
// parse config
if (isset($setup->config->instanceRelation->in)) {
foreach ($setup->config->instanceRelation->in as $rel) {
// create new graph pattern
$groupPattern = new Erfurt_Sparql_Query2_GroupGraphPattern();
// add triplen
$groupPattern->addTriple($searchVar, new Erfurt_Sparql_Query2_IriRef($rel), $subVar);
// add triplet to union var
$union->addElement($groupPattern);
}
}
$query->addElement($union);
// add regex filter for search string
$query->addFilter(new Erfurt_Sparql_Query2_Regex(new Erfurt_Sparql_Query2_Str($searchVar), new Erfurt_Sparql_Query2_RDFLiteral($setup->state->searchString)));
return $query;
}
private function checkConfig($config)
{
$resVar = new Erfurt_Sparql_Query2_Var('resourceUri');
$typeVar = new Erfurt_Sparql_Query2_IriRef(EF_RDF_TYPE);
$query = new Erfurt_Sparql_Query2();
$query->addProjectionVar($resVar)->setDistinct(true);
$union = new Erfurt_Sparql_Query2_GroupOrUnionGraphPattern();
if (is_string($config->hierarchyTypes)) {
$config->hierarchyTypes = array($config->hierarchyTypes);
}
foreach ($config->hierarchyTypes->toArray() as $type) {
$ggp = new Erfurt_Sparql_Query2_GroupGraphPattern();
$ggp->addTriple($resVar, $typeVar, new Erfurt_Sparql_Query2_IriRef($type));
$union->addElement($ggp);
}
$query->addElement($union);
$query->setLimit(1);
$allResults = $this->_owApp->selectedModel->sparqlQuery($query);
/*$this->_owApp->logger->info(
'Navigation Query: ' .PHP_EOL . $query->__toString()
);
$this->_owApp->logger->info(
'Navigation Query Results: ' .PHP_EOL . print_r($all_results)
);*/
return count($allResults);
}
/**
* Searches the local database for URIs. If mode is set to properties only,
* only defined properties and URIs that are used at least once as a
* property are returned.
*
* the classes array is used for class restrictions
*
* @param array $termsArray
* @param string $modelUri
* @param int $mode
* @param int $limit
* @param array $classes
*
* @return array
*/
private function _searchLocal(array $termsArray, $modelUri, $mode, $limit, $classes = array())
{
if ($mode === self::SEARCH_MODE_PROPERTIES) {
return $this->_searchLocalPropertiesOnly($termsArray, $modelUri, $limit);
}
$store = Erfurt_App::getInstance()->getStore();
// get a store specific text-search query2 object
$searchPattern = $store->getSearchPattern(implode(" ", $termsArray), $modelUri);
$query = new Erfurt_Sparql_Query2();
$query->addElements($searchPattern);
$projVar = new Erfurt_Sparql_Query2_Var('resourceUri');
$query->addProjectionVar($projVar);
// add class restriction patterns for each class
foreach ($classes as $class) {
$classPattern = new Erfurt_Sparql_Query2_GroupGraphPattern();
$classPattern->addTriple($projVar, new Erfurt_Sparql_Query2_IriRef(EF_RDF_TYPE), new Erfurt_Sparql_Query2_IriRef($class));
$query->addElement($classPattern);
}
$query->setLimit(20);
$query->setDistinct(true);
$queryResult = $store->sparqlQuery($query, array('result_format' => 'extended'));
$tempResult = array();
foreach ($queryResult['results']['bindings'] as $row) {
$object = isset($row['o']) ? $row['o']['value'] : null;
$weight = $this->_getWeight($termsArray, $row['resourceUri']['value'], $object);
if (isset($tempResult[$row['resourceUri']['value']])) {
if ($weight > $tempResult[$row['resourceUri']['value']]) {
$tempResult[$row['resourceUri']['value']] = $weight;
}
} else {
$tempResult[$row['resourceUri']['value']] = $weight;
}
}
arsort($tempResult);
require_once 'OntoWiki/Model/TitleHelper.php';
require_once 'OntoWiki/Utils.php';
if (null !== $modelUri) {
$model = $store->getModel($modelUri, false);
$titleHelper = new OntoWiki_Model_TitleHelper($model);
} else {
$titleHelper = new OntoWiki_Model_TitleHelper();
}
$titleHelper->addResources(array_keys($tempResult));
$translate = $this->_owApp->translate;
// create different source description strings
if (count($classes) > 0) {
$sourceString = $translate->_('Local Search') . ' (' . $translate->_('recommended') . ')';
} else {
$sourceString = $translate->_('Local Search');
}
$result = array();
foreach ($tempResult as $uri => $w) {
$title = $titleHelper->getTitle($uri);
if (null !== $title) {
$result[$uri] = str_replace('|', 'Ι', $title) . '|' . $uri . '|' . $sourceString;
} else {
$result[$uri] = OntoWiki_Utils::compactUri($uri) . $uri . '|' . $sourceString;
}
}
return $result;
}
/**
* Moves resource to new URI
* renaming all occurences of the resource.
*
* @param string $oldUri The URI that identifies the resource.
* @param string $newUri The URI to move resource to.
*
* @return void
*/
public function renameResource($oldUri, $newUri)
{
$query = new Erfurt_Sparql_Query2();
$query->setDistinct(true);
$vars = array();
foreach (array('s', 'p', 'o') as $varName) {
$vars[$varName] = new Erfurt_Sparql_Query2_Var($varName);
$query->addProjectionVar($vars[$varName]);
}
$oldUriRef = new Erfurt_Sparql_Query2_IriRef($oldUri);
$union = new Erfurt_Sparql_Query2_GroupOrUnionGraphPattern();
foreach ($vars as $var) {
$group = new Erfurt_Sparql_Query2_GroupGraphPattern();
$group->addTriple($vars['s'], $vars['p'], $vars['o']);
$group->addFilter(new Erfurt_Sparql_Query2_sameTerm($var, $oldUriRef));
$union->addElement($group);
}
$query->addElement($union);
$result = $this->sparqlQuery($query, array('result_format' => 'extended'));
$removed = array();
$added = array();
foreach ($result['results']['bindings'] as $s) {
// result format from sparqlQuery
// isn't the same as format for delete/addMultipleStatements
if (array_key_exists('xml:lang', $s['o'])) {
$s['o']['lang'] = $s['o']['xml:lang'];
unset($s['o']['xml:lang']);
}
$removed[$s['s']['value']][$s['p']['value']][] = $s['o'];
foreach (array('s', 'p', 'o') as $varName) {
if ($s[$varName]['type'] === 'uri' && $s[$varName]['value'] === $oldUri) {
$s[$varName]['value'] = $newUri;
}
}
$added[$s['s']['value']][$s['p']['value']][] = $s['o'];
}
$this->deleteMultipleStatements($removed);
$this->addMultipleStatements($added);
}
