/**
* Loads incoming redirects referring to the given entity ID.
*
* @param EntityId $id
*
* @return EntityId[]
* @throws HttpError
*/
private function getIncomingRedirects(EntityId $id)
{
try {
return $this->entityRedirectLookup->getRedirectIds($id);
} catch (EntityRedirectLookupException $ex) {
$prefixedId = $id->getSerialization();
wfDebugLog(__CLASS__, __FUNCTION__ . ": failed to load incoming redirects of {$prefixedId}: {$ex}");
return array();
}
}
/**
* @param EntityId $entityId
*
* @throws RedirectCreationException
*/
private function checkExistsNoRedirect(EntityId $entityId)
{
try {
$redirect = $this->entityRedirectLookup->getRedirectForEntityId($entityId, 'for update');
} catch (EntityRedirectLookupException $ex) {
throw new RedirectCreationException($ex->getMessage(), 'no-such-entity', $ex);
}
if ($redirect !== null) {
throw new RedirectCreationException("Entity {$entityId} is a redirect", 'target-is-redirect');
}
}
/**
* Load the sitelink using a SiteLinkLookup. Resolves item redirects, if needed.
*
* @param string $site
* @param ItemId $itemId
*
* @return array[]
*/
private function loadLinks($site, ItemId $itemId)
{
$links = $this->siteLinkLookup->getLinks(array($itemId->getNumericId()), array($site));
if (isset($links[0])) {
return $links;
}
// Maybe the item is a redirect: Try to resolve the redirect and load
// the links from there.
$redirectTarget = $this->redirectLookup->getRedirectForEntityId($itemId);
if ($redirectTarget instanceof ItemId) {
return $this->siteLinkLookup->getLinks(array($redirectTarget->getNumericId()), array($site));
}
return array();
}