| Clover coverage report - Clover results for XOM 1.2d1 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| XMLException.java | 100% | 100% | 100% | 100% |
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| 1 | /* Copyright 2002-2005 Elliotte Rusty Harold | |
| 2 | ||
| 3 | This library is free software; you can redistribute it and/or modify | |
| 4 | it under the terms of version 2.1 of the GNU Lesser General Public | |
| 5 | License as published by the Free Software Foundation. | |
| 6 | ||
| 7 | This library is distributed in the hope that it will be useful, | |
| 8 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 9 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 10 | GNU Lesser General Public License for more details. | |
| 11 | ||
| 12 | You should have received a copy of the GNU Lesser General Public | |
| 13 | License along with this library; if not, write to the | |
| 14 | Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
| 15 | Boston, MA 02111-1307 USA | |
| 16 | ||
| 17 | You can contact Elliotte Rusty Harold by sending e-mail to | |
| 18 | elharo@metalab.unc.edu. Please include the word "XOM" in the | |
| 19 | subject line. The XOM home page is located at http://www.xom.nu/ | |
| 20 | */ | |
| 21 | ||
| 22 | ||
| 23 | package nu.xom; | |
| 24 | ||
| 25 | /** | |
| 26 | * <p> | |
| 27 | * The generic superclass for most runtime exceptions thrown in | |
| 28 | * <code>nu.xom</code>. The general principle followed is that | |
| 29 | * anything that can normally be detected by testing such as | |
| 30 | * using spaces in an element name is a runtime exception. | |
| 31 | * Exceptions that depend on environmental conditions, | |
| 32 | * such as might occur when parsing an external file, | |
| 33 | * are checked exceptions, because these depend on variable input, | |
| 34 | * and thus all problems may not be detected during testing. | |
| 35 | * </p> | |
| 36 | * | |
| 37 | * @author Elliotte Rusty Harold | |
| 38 | * @version 1.1b3 | |
| 39 | * | |
| 40 | */ | |
| 41 | public class XMLException extends RuntimeException { | |
| 42 | ||
| 43 | ||
| 44 | private static final long serialVersionUID = -4497254051626978523L; | |
| 45 | ||
| 46 | private Throwable cause; | |
| 47 | ||
| 48 | ||
| 49 | /** | |
| 50 | * <p> | |
| 51 | * Creates a new <code>XMLException</code> | |
| 52 | * with the specified detail message | |
| 53 | * and an underlying root cause. | |
| 54 | * </p> | |
| 55 | * | |
| 56 | * @param message information about the cause of the exception | |
| 57 | * @param cause the nested exception that caused this exception | |
| 58 | */ | |
| 59 | 17 | public XMLException(String message, Throwable cause) { |
| 60 | 17 | super(message); |
| 61 | 17 | this.initCause(cause); |
| 62 | } | |
| 63 | ||
| 64 | ||
| 65 | /** | |
| 66 | * <p> | |
| 67 | * Creates a new <code>XMLException</code> with | |
| 68 | * the specified detail message. | |
| 69 | * </p> | |
| 70 | * | |
| 71 | * @param message information about the cause of the exception | |
| 72 | */ | |
| 73 | 65978 | public XMLException(String message) { |
| 74 | 65978 | super(message); |
| 75 | } | |
| 76 | ||
| 77 | ||
| 78 | /** | |
| 79 | * <p> | |
| 80 | * Return the original cause that led to this exception, | |
| 81 | * or null if there was no original exception. | |
| 82 | * </p> | |
| 83 | * | |
| 84 | * @return the root cause of this exception | |
| 85 | */ | |
| 86 | 16 | public Throwable getCause() { |
| 87 | 16 | return this.cause; |
| 88 | } | |
| 89 | ||
| 90 | ||
| 91 | // null is insufficient for detecting an uninitialized cause. | |
| 92 | // The cause may be set to null which may not then be reset. | |
| 93 | private boolean causeSet = false; | |
| 94 | ||
| 95 | ||
| 96 | /** | |
| 97 | * <p> | |
| 98 | * Sets the root cause of this exception. This may | |
| 99 | * only be called once. Subsequent calls throw an | |
| 100 | * <code>IllegalStateException</code>. | |
| 101 | * </p> | |
| 102 | * | |
| 103 | * <p> | |
| 104 | * This method is unnecessary in Java 1.4 where it could easily be | |
| 105 | * inherited from the superclass. However, including it here | |
| 106 | * allows this method to be used in Java 1.3 and earlier. | |
| 107 | * </p> | |
| 108 | * | |
| 109 | * @param cause the root cause of this exception | |
| 110 | * | |
| 111 | * @return this <code>XMLException</code> | |
| 112 | * | |
| 113 | * @throws IllegalArgumentException if the cause is this exception | |
| 114 | * (An exception cannot be its own cause.) | |
| 115 | * @throws IllegalStateException if this method is called twice | |
| 116 | */ | |
| 117 | 25 | public final Throwable initCause(Throwable cause) { |
| 118 | ||
| 119 | 25 | if (causeSet) { |
| 120 | 4 | throw new IllegalStateException("Can't overwrite cause"); |
| 121 | } | |
| 122 | 21 | else if (cause == this) { |
| 123 | 1 | throw new IllegalArgumentException("Self-causation not permitted"); |
| 124 | } | |
| 125 | 20 | else this.cause = cause; |
| 126 | 20 | causeSet = true; |
| 127 | 20 | return this; |
| 128 | ||
| 129 | } | |
| 130 | ||
| 131 | ||
| 132 | } |
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