public function prune( &$maxsize, &$maxdepth, &$log ) {
if ( $maxsize <= 0 ) {
$log[] = $this->getQueryString();
return new SMWThingDescription();
}
$prunelog = array();
$newdepth = $maxdepth;
$result = new SMWConjunction();
foreach ( $this->m_descriptions as $desc ) {
$restdepth = $maxdepth;
$result->addDescription( $desc->prune( $maxsize, $restdepth, $prunelog ) );
$newdepth = min( $newdepth, $restdepth );
}
if ( count( $result->getDescriptions() ) > 0 ) {
$log = array_merge( $log, $prunelog );
$maxdepth = $newdepth;
if ( count( $result->getDescriptions() ) == 1 ) { // simplify unary conjunctions!
$descriptions = $result->getDescriptions();
$result = array_shift( $descriptions );
}
$result->setPrintRequests( $this->getPrintRequests() );
return $result;
} else {
$log[] = $this->getQueryString();
$result = new SMWThingDescription();
$result->setPrintRequests( $this->getPrintRequests() );
return $result;
}
}
/**
* Returns whether the concepts of the group cover the specified page.
*
* @since 0.1
*
* @param Title $title
*
* @return boolean
*/
public function conceptsCoverPage(Title $title)
{
if (count($this->concepts) == 0) {
return true;
}
$foundMatch = false;
foreach ($this->concepts as $groupConcept) {
$queryDescription = new SMWConjunction();
$conceptTitle = Title::newFromText($groupConcept, SMW_NS_CONCEPT);
if (!$conceptTitle->exists()) {
continue;
}
$queryDescription->addDescription(new SMWConceptDescription(SMWDIWikiPage::newFromTitle($conceptTitle)));
$queryDescription->addDescription(new SMWValueDescription(SMWDIWikiPage::newFromTitle($title)));
$query = new SMWQuery($queryDescription);
$query->querymode = SMWQuery::MODE_COUNT;
/* SMWQueryResult */
$result = smwfGetStore()->getQueryResult($query);
$foundMatch = $result instanceof SMWQueryResult ? $result->getCount() > 0 : $result > 0;
if ($foundMatch) {
break;
}
}
return $foundMatch;
}
