/**
* Rebuild the property info entries.
* Use the rebuildPropertyInfo.php maintenance script to invoke this from the command line.
*
* Database updates a batched into multiple transactions. Do not call this
* method within an (explicit) database transaction.
*
* @since 0.4
*/
public function rebuildPropertyInfo()
{
$dbw = $this->propertyInfoTable->getWriteConnection();
$rowId = $this->fromId - 1;
$total = 0;
$join = array();
$tables = array('wb_entity_per_page');
if (!$this->shouldUpdateAllEntities) {
// Find properties in wb_entity_per_page with no corresponding
// entry in wb_property_info.
$piTable = $this->propertyInfoTable->getTableName();
$tables[] = $piTable;
$join[$piTable] = array('LEFT JOIN', array('pi_property_id = epp_entity_id'));
}
while (true) {
// Make sure we are not running too far ahead of the slaves,
// as that would cause the site to be rendered read only.
wfWaitForSlaves();
if ($this->useTransactions) {
$dbw->begin();
}
//FIXME: use an EntityIdPager from EntityPerPage
$props = $dbw->select($tables, array('epp_entity_id'), array('epp_entity_type = ' . $dbw->addQuotes(Property::ENTITY_TYPE), 'epp_entity_id > ' . (int) $rowId, 'epp_redirect_target IS NULL', $this->shouldUpdateAllEntities ? '1' : 'pi_property_id IS NULL'), __METHOD__, array('LIMIT' => $this->batchSize, 'ORDER BY' => 'epp_entity_id ASC', 'FOR UPDATE'), $join);
$c = 0;
foreach ($props as $row) {
$id = PropertyId::newFromNumber((int) $row->epp_entity_id);
$this->updatePropertyInfo($id);
$rowId = $row->epp_entity_id;
$c++;
}
if ($this->useTransactions) {
$dbw->commit();
}
$this->reportMessage("Updated {$c} properties, up to ID {$rowId}.");
$total += $c;
if ($c < $this->batchSize) {
// we are done.
break;
}
}
return $total;
}
/**
* Wrapper for invoking PropertyInfoTableBuilder from DatabaseUpdater
* during a database update.
*
* @param DatabaseUpdater $updater
*/
public static function rebuildPropertyInfo(DatabaseUpdater $updater)
{
$reporter = new ObservableMessageReporter();
$reporter->registerReporterCallback(function ($msg) use($updater) {
$updater->output("..." . $msg . "\n");
});
$table = new PropertyInfoTable(false);
$wikibaseRepo = WikibaseRepo::getDefaultInstance();
$contentCodec = $wikibaseRepo->getEntityContentDataCodec();
$propertyInfoBuilder = $wikibaseRepo->newPropertyInfoBuilder();
$wikiPageEntityLookup = new WikiPageEntityRevisionLookup($contentCodec, new WikiPageEntityMetaDataLookup($wikibaseRepo->getEntityIdParser()), false);
$cachingEntityLookup = new CachingEntityRevisionLookup($wikiPageEntityLookup, new HashBagOStuff());
$entityLookup = new RevisionBasedEntityLookup($cachingEntityLookup);
$builder = new PropertyInfoTableBuilder($table, $entityLookup, $propertyInfoBuilder);
$builder->setReporter($reporter);
$builder->setUseTransactions(false);
$updater->output('Populating ' . $table->getTableName() . "\n");
$builder->rebuildPropertyInfo();
}
