J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.io; |
| 27 | |
| 28 | /** |
| 29 | * Signals that one of the ObjectStreamExceptions was thrown during a |
| 30 | * write operation. Thrown during a read operation when one of the |
| 31 | * ObjectStreamExceptions was thrown during a write operation. The |
| 32 | * exception that terminated the write can be found in the detail |
| 33 | * field. The stream is reset to it's initial state and all references |
| 34 | * to objects already deserialized are discarded. |
| 35 | * |
| 36 | * <p>As of release 1.4, this exception has been retrofitted to conform to |
| 37 | * the general purpose exception-chaining mechanism. The "exception causing |
| 38 | * the abort" that is provided at construction time and |
| 39 | * accessed via the public {@link #detail} field is now known as the |
| 40 | * <i>cause</i>, and may be accessed via the {@link Throwable#getCause()} |
| 41 | * method, as well as the aforementioned "legacy field." |
| 42 | * |
| 43 | * @author unascribed |
| 44 | * @since JDK1.1 |
| 45 | */ |
| 46 | public class WriteAbortedException extends ObjectStreamException { |
| 47 | private static final long serialVersionUID = -3326426625597282442L; |
| 48 | |
| 49 | /** |
| 50 | * Exception that was caught while writing the ObjectStream. |
| 51 | * |
| 52 | * <p>This field predates the general-purpose exception chaining facility. |
| 53 | * The {@link Throwable#getCause()} method is now the preferred means of |
| 54 | * obtaining this information. |
| 55 | * |
| 56 | * @serial |
| 57 | */ |
| 58 | public Exception detail; |
| 59 | |
| 60 | /** |
| 61 | * Constructs a WriteAbortedException with a string describing |
| 62 | * the exception and the exception causing the abort. |
| 63 | * @param s String describing the exception. |
| 64 | * @param ex Exception causing the abort. |
| 65 | */ |
| 66 | public WriteAbortedException(String s, Exception ex) { |
| 67 | super(s); |
| 68 | initCause(null); // Disallow subsequent initCause |
| 69 | detail = ex; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Produce the message and include the message from the nested |
| 74 | * exception, if there is one. |
| 75 | */ |
| 76 | public String getMessage() { |
| 77 | if (detail == null) |
| 78 | return super.getMessage(); |
| 79 | else |
| 80 | return super.getMessage() + "; " + detail.toString(); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Returns the exception that terminated the operation (the <i>cause</i>). |
| 85 | * |
| 86 | * @return the exception that terminated the operation (the <i>cause</i>), |
| 87 | * which may be null. |
| 88 | * @since 1.4 |
| 89 | */ |
| 90 | public Throwable getCause() { |
| 91 | return detail; |
| 92 | } |
| 93 | } |