/**
* Determines the schema version.
*
* @return int
*/
public static function checkSchema() {
if ( self::$schema !== false ) {
return self::$schema;
} else {
$dbr = wfGetDB( DB_SLAVE );
if ( $dbr->tableExists( 'revtag_type' ) ) {
return self::$schema = 1;
} else {
return self::$schema = 2;
}
}
}
