1 package org.apache.lucene.store;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 import java.io.IOException;
23 * Use this {@link LockFactory} to disable locking entirely.
24 * Only one instance of this lock is created. You should call {@link
25 * #getNoLockFactory()} to get the instance.
30 public class NoLockFactory extends LockFactory {
32 // Single instance returned whenever makeLock is called.
33 private static NoLock singletonLock = new NoLock();
34 private static NoLockFactory singleton = new NoLockFactory();
37 * @deprecated This constructor was not intended to be public and should not be used.
38 * It will be made private in Lucene 4.0
39 * @see #getNoLockFactory()
41 // make private in 4.0!
43 public NoLockFactory() {}
45 public static NoLockFactory getNoLockFactory() {
50 public Lock makeLock(String lockName) {
55 public void clearLock(String lockName) {}
58 class NoLock extends Lock {
60 public boolean obtain() throws IOException {
65 public void release() {
69 public boolean isLocked() {
74 public String toString() {