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Java > Open Source Codes > org > netbeans > modules > masterfs > filebasedfs > fileobjects > WriteLockFactory


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.masterfs.filebasedfs.fileobjects;
21
22 import org.netbeans.modules.masterfs.filebasedfs.utils.FSException;
23 import org.openide.filesystems.FileLock;
24
25 import java.io.File JavaDoc;
26 import java.io.IOException JavaDoc;
27
28 /**
29  * @author Radek Matous
30  */
31 public final class WriteLockFactory {
32     public static synchronized FileLock tryLock(final File JavaDoc file, boolean lightWeight) throws IOException JavaDoc {
33         boolean isLockFile = WriteLockUtils.hasActiveLockFileSigns(file.getAbsolutePath());
34         if (isLockFile) {
35             IOException JavaDoc toFire = new IOException JavaDoc(file.getAbsolutePath());
36             FSException.annotateException(toFire);
37             throw toFire;
38         }
39         
40         return (lightWeight) ? WriteLock.tryLightWeightLock(file) :
41             ((isNioLockingEnabled()) ? WriteLock.tryNioLock(file) : WriteLock.tryLock(file));
42     }
43
44     private static boolean isNioLockingEnabled() {
45         //TODO: probably according to property
46 return false;
47     }
48     
49     private WriteLockFactory(){}
50 }
51
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