* @author Tim Starling
* @copyright © 2009, Tim Starling, Domas Mituzas
* @copyright © 2010, Max Sem
- * @copyright © 2011, Ashar Voultoiz
+ * @copyright © 2011, Antoine Musso
*/
class BacklinkCache {
* Serialization handler, diasallows to serialize the database to prevent
* failures after this class is deserialized from cache with dead DB
* connection.
+ *
+ * @return array
*/
function __sleep() {
return array( 'partitionCache', 'fullResultCache', 'title' );
/**
* Set the Database object to use
+ *
+ * @param $db DatabaseBase
*/
public function setDB( $db ) {
$this->db = $db;
if ( isset( $prefixes[$table] ) ) {
return $prefixes[$table];
} else {
- throw new MWException( "Invalid table \"$table\" in " . __CLASS__ );
+ $prefix = null;
+ wfRunHooks( 'BacklinkCacheGetPrefix', array( $table, &$prefix ) );
+ if( $prefix ) {
+ return $prefix;
+ } else {
+ throw new MWException( "Invalid table \"$table\" in " . __CLASS__ );
+ }
}
}
switch ( $table ) {
case 'pagelinks':
case 'templatelinks':
+ $conds = array(
+ "{$prefix}_namespace" => $this->title->getNamespace(),
+ "{$prefix}_title" => $this->title->getDBkey(),
+ "page_id={$prefix}_from"
+ );
+ break;
case 'redirect':
$conds = array(
"{$prefix}_namespace" => $this->title->getNamespace(),
"{$prefix}_title" => $this->title->getDBkey(),
+ $this->getDb()->makeList( array(
+ "{$prefix}_interwiki = ''",
+ "{$prefix}_interwiki is null",
+ ), LIST_OR ),
"page_id={$prefix}_from"
);
break;
);
break;
default:
- throw new MWException( "Invalid table \"$table\" in " . __CLASS__ );
+ $conds = null;
+ wfRunHooks( 'BacklinkCacheGetConditions', array( $table, $this->title, &$conds ) );
+ if( !$conds )
+ throw new MWException( "Invalid table \"$table\" in " . __CLASS__ );
}
return $conds;
/**
* Partition the backlinks into batches.
- * Returns an array giving the start and end of each range. The firsti
+ * Returns an array giving the start and end of each range. The first
* batch has a start of false, and the last batch has an end of false.
*
* @param $table String: the links table name
*/
public function partition( $table, $batchSize ) {
- // 1) try this per process cache first
+ // 1) try partition cache ...
if ( isset( $this->partitionCache[$table][$batchSize] ) ) {
wfDebug( __METHOD__ . ": got from partition cache\n" );
$this->partitionCache[$table][$batchSize] = false;
$cacheEntry =& $this->partitionCache[$table][$batchSize];
- // 2) try full result cache
+ // 2) ... then try full result cache ...
if ( isset( $this->fullResultCache[$table] ) ) {
$cacheEntry = $this->partitionResult( $this->fullResultCache[$table], $batchSize );