| /* |
| * 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.lenya.transaction; |
| |
| /** |
| * Object that can be locked. |
| * |
| * @version $Id$ |
| */ |
| public interface Lockable { |
| |
| /** |
| * Locks this object. |
| * @throws TransactionException if an error occurs. |
| */ |
| void lock() throws TransactionException; |
| |
| /** |
| * Unlocks this object. |
| * @throws TransactionException if an error occurs. |
| */ |
| void unlock() throws TransactionException; |
| |
| /** |
| * @return if this object is locked. |
| * @throws TransactionException if an error occurs. |
| */ |
| boolean isLocked() throws TransactionException; |
| |
| /** |
| * @return The lock which is held by this object. |
| */ |
| Lock getLock(); |
| |
| } |