/**
* Main method. Does the actual work and sets the result.
*
* @since 0.1
*/
public function execute()
{
$lookup = $this->revisionLookup;
$params = $this->extractRequestParams();
$this->validateParameters($params);
// Sites are already tested through allowed params ;)
$sites = $this->siteLinkTargetProvider->getSiteList($this->siteLinkGroups);
/** @var Site $fromSite */
list($fromSite, $fromPage) = $this->getSiteAndNormalizedPageName($sites, $params['fromsite'], $params['fromtitle']);
/** @var Site $toSite */
list($toSite, $toPage) = $this->getSiteAndNormalizedPageName($sites, $params['tosite'], $params['totitle']);
$siteLinkStore = WikibaseRepo::getDefaultInstance()->getStore()->newSiteLinkStore();
$fromId = $siteLinkStore->getItemIdForLink($fromSite->getGlobalId(), $fromPage);
$toId = $siteLinkStore->getItemIdForLink($toSite->getGlobalId(), $toPage);
$siteLinkList = new SiteLinkList();
$flags = 0;
$item = null;
$summary = new Summary($this->getModuleName());
$summary->addAutoSummaryArgs($fromSite->getGlobalId() . ':' . $fromPage, $toSite->getGlobalId() . ':' . $toPage);
//FIXME: use ChangeOps for consistency!
// Figure out which parts to use and what to create anew
if ($fromId === null && $toId === null) {
// create new item
$item = new Item();
$toLink = new SiteLink($toSite->getGlobalId(), $toPage);
$item->addSiteLink($toLink);
$siteLinkList->addSiteLink($toLink);
$fromLink = new SiteLink($fromSite->getGlobalId(), $fromPage);
$item->addSiteLink($fromLink);
$siteLinkList->addSiteLink($fromLink);
$flags |= EDIT_NEW;
$summary->setAction('create');
} elseif ($fromId === null && $toId !== null) {
// reuse to-site's item
/** @var Item $item */
$itemRev = $lookup->getEntityRevision($toId, EntityRevisionLookup::LATEST_FROM_MASTER);
$item = $itemRev->getEntity();
$fromLink = new SiteLink($fromSite->getGlobalId(), $fromPage);
$item->addSiteLink($fromLink);
$siteLinkList->addSiteLink($fromLink);
$summary->setAction('connect');
} elseif ($fromId !== null && $toId === null) {
// reuse from-site's item
/** @var Item $item */
$itemRev = $lookup->getEntityRevision($fromId, EntityRevisionLookup::LATEST_FROM_MASTER);
$item = $itemRev->getEntity();
$toLink = new SiteLink($toSite->getGlobalId(), $toPage);
$item->addSiteLink($toLink);
$siteLinkList->addSiteLink($toLink);
$summary->setAction('connect');
} elseif ($fromId->equals($toId)) {
// no-op
$this->errorReporter->dieError('Common item detected, sitelinks are both on the same item', 'common-item');
} else {
// dissimilar items
$this->errorReporter->dieError('No common item detected, unable to link titles', 'no-common-item');
}
$this->resultBuilder->addSiteLinkList($siteLinkList, 'entity');
$status = $this->getAttemptSaveStatus($item, $summary, $flags);
$this->buildResult($item, $status);
}
