/**
* Returns an array of SiteLink objects for an item. If the item isn't known or not an Item,
* an empty array is returned.
*
* @since 0.4
*
* @param ItemId $itemId
*
* @return SiteLink[]
*/
public function getSiteLinksForItem(ItemId $itemId)
{
$cacheKey = $this->cacheKeyPrefix . ':sitelinks:' . $itemId->getSerialization();
$siteLinks = $this->cache->get($cacheKey);
if (!is_array($siteLinks)) {
$siteLinks = $this->lookup->getSiteLinksForItem($itemId);
$this->cache->set($cacheKey, $siteLinks, $this->cacheDuration);
}
return $siteLinks;
}
/**
* @param ItemId $itemId
*
* @return SiteLink[]
*/
private function getSiteLinks(ItemId $itemId)
{
return $this->siteLinkLookup->getSiteLinksForItem($itemId);
}
/**
* Returns a usage lookup based on $siteLinklookup.
* Local page IDs are spoofed using the numeric item ID as the local page ID.
*
* @param SiteLinkLookup $siteLinkLookup
*
* @return UsageLookup
*/
private function getUsageLookup(SiteLinkLookup $siteLinkLookup)
{
$usageLookup = $this->getMock('Wikibase\\Client\\Usage\\UsageLookup');
$usageLookup->expects($this->any())->method('getPagesUsing')->will($this->returnCallback(function ($ids) use($siteLinkLookup) {
$pages = array();
foreach ($ids as $id) {
if (!$id instanceof ItemId) {
continue;
}
$links = $siteLinkLookup->getSiteLinksForItem($id);
foreach ($links as $link) {
if ($link->getSiteId() === 'enwiki') {
// we use the numeric item id as the fake page id of the local page!
$usages = array(new EntityUsage($id, EntityUsage::SITELINK_USAGE), new EntityUsage($id, EntityUsage::LABEL_USAGE, 'en'));
$pages[] = new PageEntityUsages($id->getNumericId(), $usages);
}
}
}
return new ArrayIterator($pages);
}));
return $usageLookup;
}
