Mercurial > hg4j
annotate src/org/tmatesoft/hg/core/HgInvalidRevisionException.java @ 347:8da7ade36c57
Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> | 
|---|---|
| date | Tue, 22 Nov 2011 05:25:57 +0100 | 
| parents | |
| children | 8107b95f4280 | 
| rev | line source | 
|---|---|
| 
347
 
8da7ade36c57
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Artem Tikhomirov <tikhomirov.artem@gmail.com> 
parents:  
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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 org.tmatesoft.hg.internal.Experimental; | 
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20 import org.tmatesoft.hg.repo.HgRepository; | 
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21 | 
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22 /** | 
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23 * Use of revision or local revision index that is not valid for a given revlog. | 
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24 * | 
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25 * @author Artem Tikhomirov | 
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26 * @author TMate Software Ltd. | 
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27 */ | 
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28 @SuppressWarnings("serial") | 
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29 @Experimental(reason="1) Whether to use checked or runtime exception is not yet decided. 2) Perhaps, its use not bound to wrong arguments") | 
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30 public class HgInvalidRevisionException extends IllegalArgumentException { | 
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31 private Nodeid rev; | 
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32 private Integer revIdx; | 
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33 // next two make sense only when revIdx is present | 
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34 private int rangeLeftBoundary = -1, rangeRightBoundary = -1; | 
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35 | 
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36 /** | 
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37 * | 
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38 * this exception is not expected to be initialized with another exception, although those who need to, | 
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39 * may still use {@link #initCause(Throwable)} | 
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40 * @param message optional description of the issue | 
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41 * @param revision invalid revision, may be <code>null</code> if revisionIndex is used | 
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42 * @param revisionIndex invalid revision index, may be <code>null</code> if not known and revision is supplied | 
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43 */ | 
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44 public HgInvalidRevisionException(String message, Nodeid revision, Integer revisionIndex) { | 
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45 super(message); | 
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46 assert revision != null || revisionIndex != null; | 
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47 rev = revision; | 
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48 revIdx = revisionIndex; | 
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49 } | 
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50 | 
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51 public HgInvalidRevisionException(Nodeid revision) { | 
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52 this(null, revision, null); | 
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53 } | 
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54 | 
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55 public HgInvalidRevisionException(int revisionIndex) { | 
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56 this(null, null, revisionIndex); | 
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57 } | 
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58 | 
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59 public Nodeid getRevision() { | 
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60 return rev; | 
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61 } | 
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62 | 
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63 public Integer getRevisionIndex() { | 
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64 return revIdx; | 
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65 } | 
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66 | 
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67 public HgInvalidRevisionException setRevision(Nodeid revision) { | 
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68 assert revision != null; | 
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69 rev = revision; | 
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70 return this; | 
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71 } | 
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72 | 
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73 // int, not Integer is on purpose, not to clear exception completely | 
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74 public HgInvalidRevisionException setRevisionIndex(int revisionIndex) { | 
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75 revIdx = revisionIndex; | 
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76 return this; | 
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77 } | 
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78 | 
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79 public HgInvalidRevisionException setRevisionIndex(int revisionIndex, int rangeLeft, int rangeRight) { | 
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80 revIdx = revisionIndex; | 
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81 rangeLeftBoundary = rangeLeft; | 
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82 rangeRightBoundary = rangeRight; | 
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83 return this; | 
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84 } | 
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85 | 
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86 @Override | 
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87 public String getMessage() { | 
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88 String msg = super.getMessage(); | 
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89 if (msg != null) { | 
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90 return msg; | 
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91 } | 
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92 StringBuilder sb = new StringBuilder(); | 
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93 sb.append('['); | 
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94 if (rev != null) { | 
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95 sb.append(rev.shortNotation()); | 
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96 sb.append(' '); | 
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97 } | 
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98 if (revIdx != null) { | 
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99 String sr; | 
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100 switch (revIdx) { | 
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101 case HgRepository.BAD_REVISION : sr = "UNKNOWN"; break; | 
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102 case HgRepository.TIP : sr = "TIP"; break; | 
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103 case HgRepository.WORKING_COPY: sr = "WORKING-COPY"; break; | 
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104 default : sr = revIdx.toString(); | 
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105 } | 
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106 if (rangeLeftBoundary != -1 || rangeRightBoundary != -1) { | 
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107 sb.append(String.format("%s is not from [%d..%d]", sr, rangeLeftBoundary, rangeRightBoundary)); | 
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108 } else { | 
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109 sb.append(sr); | 
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110 } | 
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111 } | 
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112 sb.append(']'); | 
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113 return sb.toString(); | 
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114 } | 
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115 } | 
