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Java > Open Source Codes > org > openide > loaders > DataObjectExistsException


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.openide.loaders;
21
22 /** Exception signalling that the data object for this file cannot
23 * be created because there already is an object for the primary file.
24 *
25 * @author Jaroslav Tulach
26 * @version 0.10, Mar 30, 1998
27 */
28 public class DataObjectExistsException extends java.io.IOException JavaDoc {
29     /** generated Serialized Version UID */
30     static final long serialVersionUID = 4719319528535266801L;
31     /** data object */
32     private DataObject obj;
33
34     /** Create new exception.
35     * @param obj data object which already exists
36     */
37     public DataObjectExistsException (DataObject obj) {
38         this.obj = obj;
39     }
40
41     /** Get the object which already exists.
42      * @return the data object
43     */
44     public DataObject getDataObject () {
45         //
46 // we have to consult the DataObjectPool to check whether
47 // the constructor of our DataObject has finished
48 //
49 DataObjectPool.getPOOL().waitNotified (obj);
50         
51         // now it should be safe to return the objects
52 return obj;
53     }
54
55     /** Performance trick */
56     public /*final*/ Throwable JavaDoc fillInStackTrace() {
57         return this;
58     }
59 }
60
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