/**
* @param Traversable $rows
*
* @return PageEntityUsages[]
*/
private function foldRowsIntoPageEntityUsages(Traversable $rows)
{
$usagesPerPage = array();
foreach ($rows as $row) {
$pageId = (int) $row->eu_page_id;
if (isset($usagesPerPage[$pageId])) {
$pageEntityUsages = $usagesPerPage[$pageId];
} else {
$pageEntityUsages = new PageEntityUsages($pageId);
}
$entityId = $this->idParser->parse($row->eu_entity_id);
list($aspect, $modifier) = EntityUsage::splitAspectKey($row->eu_aspect);
$usage = new EntityUsage($entityId, $aspect, $modifier);
$pageEntityUsages->addUsages(array($usage));
$usagesPerPage[$pageId] = $pageEntityUsages;
}
return $usagesPerPage;
}
/**
* Transforms the entity usages from $pageEntityUsages according to the relevant
* aspects defined by calling setRelevantAspects(). A new PageEntityUsages
* containing the filtered usage list is returned.
*
* @see getFilteredUsages()
*
* @param PageEntityUsages $pageEntityUsages
*
* @return PageEntityUsages
*/
public function transformPageEntityUsages(PageEntityUsages $pageEntityUsages)
{
$entityIds = $pageEntityUsages->getEntityIds();
$transformedPageEntityUsages = new PageEntityUsages($pageEntityUsages->getPageId(), array());
foreach ($entityIds as $id) {
$aspects = $pageEntityUsages->getUsageAspectKeys($id);
$usages = $this->getFilteredUsages($id, $aspects);
$transformedPageEntityUsages->addUsages($usages);
}
return $transformedPageEntityUsages;
}