01: /*
02: * Copyright 2004-2006 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.apache.lucene.store.jdbc.lock;
18:
19: import java.io.IOException;
20:
21: import org.apache.lucene.store.Lock;
22: import org.apache.lucene.store.jdbc.JdbcDirectory;
23:
24: /**
25: * A simple no op lock. Performs no locking.
26: *
27: * @author kimchy
28: */
29: public class NoOpLock extends Lock implements JdbcLock {
30:
31: public void configure(JdbcDirectory jdbcDirectory, String name)
32: throws IOException {
33: // do nothing
34: }
35:
36: public void initializeDatabase(JdbcDirectory jdbcDirectory) {
37: // do nothing
38: }
39:
40: public boolean obtain() throws IOException {
41: return true;
42: }
43:
44: public void release() {
45: //do nothing
46: }
47:
48: public boolean isLocked() {
49: return false;
50: }
51: }
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