/**
* Returns modification updates for the given EntityContent.
*
* @see Content::getSecondaryDataUpdates
*
* @since 0.5
*
* @param EntityContent $content
* @param Title $title
*
* @return DataUpdate[]
*/
public function getEntityModificationUpdates(EntityContent $content, Title $title)
{
$updates = array();
$entityId = $content->getEntityId();
//FIXME: we should not need this!
if ($entityId === null) {
$entityId = $this->getIdForTitle($title);
}
if ($content->isRedirect()) {
// Remove the entity from the terms table since it's now a redirect.
$updates[] = new DataUpdateAdapter(array($this->termIndex, 'deleteTermsOfEntity'), $entityId);
// Register the redirect from the EntityPerPage table.
$updates[] = new DataUpdateAdapter(array($this->entityPerPage, 'addRedirectPage'), $entityId, $title->getArticleID(), $content->getEntityRedirect()->getTargetId());
} else {
// Register the entity in the EntityPerPage table.
$updates[] = new DataUpdateAdapter(array($this->entityPerPage, 'addEntityPage'), $entityId, $title->getArticleID());
// Register the entity in the terms table.
$updates[] = new DataUpdateAdapter(array($this->termIndex, 'saveTermsOfEntity'), $content->getEntity());
}
// Call the WikibaseEntityModificationUpdate hook.
// Do this after doing all well-known updates.
$updates[] = new DataUpdateAdapter('wfRunHooks', 'WikibaseEntityModificationUpdate', array($content, $title));
return $updates;
}
/**
* Returns a diff between this EntityContent and the given EntityContent.
*
* @param EntityContent $toContent
*
* @return EntityContentDiff
*/
public function getDiff(EntityContent $toContent)
{
$fromContent = $this;
$differ = new MapDiffer();
$redirectDiffOps = $differ->doDiff($fromContent->getRedirectData(), $toContent->getRedirectData());
$redirectDiff = new Diff($redirectDiffOps, true);
$fromEntity = $fromContent->isRedirect() ? $this->makeEmptyEntity() : $fromContent->getEntity();
$toEntity = $toContent->isRedirect() ? $this->makeEmptyEntity() : $toContent->getEntity();
$entityDiffer = new EntityDiffer();
$entityDiff = $entityDiffer->diffEntities($fromEntity, $toEntity);
return new EntityContentDiff($entityDiff, $redirectDiff);
}
/**
* Returns a EntityChange based on the old and new content object, taking
* redirects into consideration.
*
* @todo: Notify the client about changes to redirects explicitly.
*
* @param EntityContent $oldContent
* @param EntityContent $newContent
*
* @return EntityChange|null
*/
private function getChangeForModification(EntityContent $oldContent, EntityContent $newContent)
{
$oldEntity = $oldContent->isRedirect() ? null : $oldContent->getEntity();
$newEntity = $newContent->isRedirect() ? null : $newContent->getEntity();
if ($oldEntity === null && $newEntity === null) {
// Old and new versions are redirects. Nothing to do.
return null;
} elseif ($newEntity === null) {
// The new version is a redirect. For now, treat that as a deletion.
$action = EntityChange::REMOVE;
} elseif ($oldEntity === null) {
// The old version is a redirect. For now, treat that like restoring the entity.
$action = EntityChange::RESTORE;
} else {
// No redirects involved
$action = EntityChange::UPDATE;
}
$change = $this->changeFactory->newFromUpdate($action, $oldEntity, $newEntity);
return $change;
}
/**
* Returns modification updates for the given EntityContent.
*
* @see EntityHandler::getEntityModificationUpdates
*
* @since 0.5
*
* @param EntityContent $content
* @param Title $title
*
* @return DataUpdate[]
*/
public function getEntityModificationUpdates(EntityContent $content, Title $title)
{
$updates = array();
if ($content->isRedirect()) {
$updates[] = new DataUpdateAdapter(array($this->siteLinkStore, 'deleteLinksOfItem'), $content->getEntityId());
} else {
$updates[] = new DataUpdateAdapter(array($this->siteLinkStore, 'saveLinksOfItem'), $content->getEntity());
}
return array_merge($updates, parent::getEntityModificationUpdates($content, $title));
}
