/**
* Prepare change attributes for the given EntityChange. This can be used to avoid
* re-calculating these attributes for each target page, when processing a change
* with respect to a batch of affected target pages.
*
* @param EntityChange $change
*
* @return array Associative array of prepared change attributes, for use with the
* $preparedAttribs of newRecentChange().
*/
public function prepareChangeAttributes(EntityChange $change)
{
$rcinfo = $change->getMetadata();
$fields = $change->getFields();
$fields['entity_type'] = $change->getEntityId()->getEntityType();
if (isset($fields['info']['changes'])) {
$changesForComment = $fields['info']['changes'];
} else {
$changesForComment = array($change);
}
$comment = $this->getEditCommentMulti($changesForComment);
unset($fields['info']);
$metadata = array_merge($fields, $rcinfo);
$isBot = false;
if (array_key_exists('bot', $metadata)) {
$isBot = $metadata['bot'];
}
// compatibility
if (array_key_exists('user_text', $metadata)) {
$userText = $metadata['user_text'];
} elseif (array_key_exists('rc_user_text', $metadata)) {
$userText = $metadata['rc_user_text'];
} else {
$userText = '';
}
$time = isset($metadata['time']) ? $metadata['time'] : wfTimestamp(TS_MW);
$params = array('wikibase-repo-change' => $metadata);
return array('rc_user' => 0, 'rc_user_text' => $userText, 'rc_comment' => $comment, 'rc_type' => RC_EXTERNAL, 'rc_minor' => true, 'rc_bot' => $isBot, 'rc_patrolled' => true, 'rc_params' => serialize($params), 'rc_timestamp' => $time, 'rc_log_type' => null, 'rc_log_action' => '', 'rc_source' => self::SRC_WIKIBASE, 'rc_deleted' => false);
}
/**
* Returns the page updates implied by the given the change.
*
* @param EntityChange $change
*
* @return Traversable of PageEntityUsages
*/
private function getAffectedPages(EntityChange $change)
{
$entityId = $change->getEntityId();
$changedAspects = $this->getChangedAspects($change);
$usages = $this->usageLookup->getPagesUsing(array($entityId), array_merge($changedAspects, array(EntityUsage::ALL_USAGE)));
// @todo: use iterators throughout!
$usages = iterator_to_array($usages, true);
$usages = $this->transformAllPageEntityUsages($usages, $entityId, $changedAspects);
if ($change instanceof ItemChange && in_array(EntityUsage::TITLE_USAGE, $changedAspects)) {
$siteLinkDiff = $change->getSiteLinkDiff();
$namesFromDiff = $this->getPagesReferencedInDiff($siteLinkDiff);
$titlesFromDiff = $this->getTitlesFromTexts($namesFromDiff);
$usagesFromDiff = $this->makeVirtualUsages($titlesFromDiff, $entityId, array(EntityUsage::SITELINK_USAGE));
//FIXME: we can't really merge if $usages is an iterator, not an array.
//TODO: Inject $usagesFromDiff "on the fly" while streaming other usages.
//NOTE: $usages must pass through mergeUsagesInto for re-indexing
$mergedUsages = array();
$this->mergeUsagesInto($usages, $mergedUsages);
$this->mergeUsagesInto($usagesFromDiff, $mergedUsages);
$usages = $mergedUsages;
}
return new ArrayIterator($usages);
}
/**
* @dataProvider changeProvider
* @since 0.4
*/
public function testToString(EntityChange $entityChange)
{
$string = $entityChange->__toString();
$id = strtolower($entityChange->getEntityId()->getSerialization());
$type = $entityChange->getType();
$this->assertContains("'object_id' => '{$id}'", $string, "missing entity ID {$id}");
$this->assertContains("'type' => '{$type}'", $string, "missing type {$type}");
}
