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annotate src/org/tmatesoft/hg/core/HgException.java @ 356:91d75e1bac9f

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Consistent approach to deal with adaptable objects. Give adaptable precedence over instanceof to allow conditional response when classes do implement desired interface
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 06 Dec 2011 14:25:52 +0100
parents 678e326fd27c
children 2fadf8695f8a
rev   line source
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1 /*
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2 * Copyright (c) 2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.core;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
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20
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21 import org.tmatesoft.hg.repo.HgRepository;
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22 import org.tmatesoft.hg.util.Path;
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23
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24 /**
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25 * Root class for all hg4j exceptions.
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26 *
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27 * @author Artem Tikhomirov
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28 * @author TMate Software Ltd.
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29 */
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30 @SuppressWarnings("serial")
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31 public class HgException extends Exception {
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32
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33 protected int revNumber = BAD_REVISION;
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34 protected Nodeid revision;
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35 protected Path filename;
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36
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37 public HgException(String reason) {
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38 super(reason);
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39 }
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40
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41 public HgException(String reason, Throwable cause) {
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42 super(reason, cause);
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43 }
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44
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45 public HgException(Throwable cause) {
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46 super(cause);
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47 }
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48
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49 /**
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50 * @return not {@link HgRepository#BAD_REVISION} only when local revision number was supplied at the construction time
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51 */
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52 public int getRevisionNumber() {
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53 return revNumber;
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54 }
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55
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56 public HgException setRevisionNumber(int rev) {
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57 revNumber = rev;
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58 return this;
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59 }
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60
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61 /**
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62 * @return non-null only when revision was supplied at construction time
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63 */
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64 public Nodeid getRevision() {
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65 return revision;
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66 }
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67
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68 public HgException setRevision(Nodeid r) {
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69 revision = r;
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70 return this;
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71 }
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72
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73 /**
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74 * @return non-null only if file name was set at construction time
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75 */
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76 public Path getFileName() {
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77 return filename;
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78 }
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79
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80 public HgException setFileName(Path name) {
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81 filename = name;
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82 return this;
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83 }
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84
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85 protected void appendDetails(StringBuilder sb) {
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86 if (filename != null) {
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87 sb.append("file:'");
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88 sb.append(filename);
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89 sb.append('\'');
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90 sb.append(';');
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91 sb.append(' ');
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92 }
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93 sb.append("rev:");
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94 if (revNumber != BAD_REVISION) {
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95 sb.append(revNumber);
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96 if (revision != null) {
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97 sb.append(':');
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98 }
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99 }
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100 if (revision != null) {
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101 sb.append(revision.shortNotation());
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102 }
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103 }
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104
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105 @Override
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106 public String toString() {
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107 StringBuilder sb = new StringBuilder(super.toString());
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108 sb.append(' ');
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109 sb.append('(');
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110 appendDetails(sb);
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111 sb.append(')');
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112 return sb.toString();
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113 }
148
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114 // /* XXX CONSIDER capability to pass extra information about errors */
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115 // public static class Status {
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116 // public Status(String message, Throwable cause, int errorCode, Object extraData) {
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117 // }
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118 // }
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119 }