+ * @param IMaintainableDatabase $db
+ * @throws DBError
+ */
+ private function initSqliteDatabase( IMaintainableDatabase $db ) {
+ if ( $db->tableExists( 'objectcache' ) ) {
+ return;
+ }
+ // Use one table for SQLite; sharding does not seem to have much benefit
+ $db->query( "PRAGMA journal_mode=WAL" ); // this is permanent
+ $db->startAtomic( __METHOD__ ); // atomic DDL
+ try {
+ $encTable = $db->tableName( 'objectcache' );
+ $encExptimeIndex = $db->addIdentifierQuotes( $db->tablePrefix() . 'exptime' );
+ $db->query(
+ "CREATE TABLE $encTable (\n" .
+ " keyname BLOB NOT NULL default '' PRIMARY KEY,\n" .
+ " value BLOB,\n" .
+ " exptime TEXT\n" .
+ ")",
+ __METHOD__
+ );
+ $db->query( "CREATE INDEX $encExptimeIndex ON $encTable (exptime)" );
+ $db->endAtomic( __METHOD__ );
+ } catch ( DBError $e ) {
+ $db->rollback( __METHOD__ );
+ throw $e;
+ }
+ }
+
+ /**
+ * Create the shard tables on all databases (e.g. via eval.php/shell.php)