| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.mavibot.btree; |
| |
| |
| /** |
| * An interface used to manage the transactions mechanism in B-trees. Transactions are cross |
| * B-trees. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public interface TransactionManager<K, V> |
| { |
| /** |
| * Starts a transaction |
| */ |
| void beginTransaction(); |
| |
| |
| /** |
| * Commits a transaction |
| */ |
| void commit(); |
| |
| |
| /** |
| * Rollback a transaction |
| */ |
| void rollback(); |
| |
| |
| /** |
| * Gets the current BtreeHeader for a given BTree. |
| * |
| * @param btreeName The Btree name we are looking the BtreeHeader for |
| * @return the current BTreeHeader |
| */ |
| BTreeHeader<K, V> getBTreeHeader( String btreeName ); |
| |
| |
| /** |
| * Updates the map of new BTreeHeaders |
| * |
| * @param btreeHeader The new BtreeHeader |
| */ |
| void updateNewBTreeHeaders( BTreeHeader<K, V> btreeHeader ); |
| } |