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annotate src/org/tmatesoft/hg/core/HgInvalidRevisionException.java @ 405:866fc3b597a0

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Add an explicit constant instead of -1 to indicate 'no revision' case
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 14 Mar 2012 22:49:32 +0100
parents 0ae53c32ecef
children
rev   line source
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1 /*
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2 * Copyright (c) 2011-2012 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.*;
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20
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21 import org.tmatesoft.hg.internal.Experimental;
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22
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23 /**
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24 * Use of revision or revision local index that is not valid for a given revlog.
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25 *
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26 * @author Artem Tikhomirov
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27 * @author TMate Software Ltd.
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28 */
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29 @SuppressWarnings("serial")
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30 @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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31 public class HgInvalidRevisionException extends IllegalArgumentException {
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32 private Nodeid rev;
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33 private Integer revIdx = BAD_REVISION;
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34 // next two make sense only when revIdx is present
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35 private int rangeLeftBoundary = BAD_REVISION, rangeRightBoundary = BAD_REVISION;
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36
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37 /**
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38 *
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39 * this exception is not expected to be initialized with another exception, although those who need to,
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40 * may still use {@link #initCause(Throwable)}
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41 * @param message optional description of the issue
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42 * @param revision invalid revision, may be <code>null</code> if revisionIndex is used
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43 * @param revisionIndex invalid revision index, may be <code>null</code> if not known and revision is supplied
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44 */
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45 public HgInvalidRevisionException(String message, Nodeid revision, Integer revisionIndex) {
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46 super(message);
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47 assert revision != null || revisionIndex != null;
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48 rev = revision;
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49 revIdx = revisionIndex;
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50 }
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51
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52 public HgInvalidRevisionException(Nodeid revision) {
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53 this(null, revision, null);
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54 }
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55
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56 public HgInvalidRevisionException(int revisionIndex) {
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57 this(null, null, revisionIndex);
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58 }
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60 public Nodeid getRevision() {
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61 return rev;
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62 }
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63
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64 public Integer getRevisionIndex() {
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65 return revIdx;
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66 }
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67
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68 public HgInvalidRevisionException setRevision(Nodeid revision) {
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69 assert revision != null;
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70 rev = revision;
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71 return this;
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72 }
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73
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74 // int, not Integer is on purpose, not to clear exception completely
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75 public HgInvalidRevisionException setRevisionIndex(int revisionIndex) {
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76 revIdx = revisionIndex;
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77 return this;
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78 }
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79
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80 public HgInvalidRevisionException setRevisionIndex(int revisionIndex, int rangeLeft, int rangeRight) {
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81 revIdx = revisionIndex;
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82 rangeLeftBoundary = rangeLeft;
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83 rangeRightBoundary = rangeRight;
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84 return this;
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85 }
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86
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87 public boolean isRevisionSet() {
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88 return rev != null;
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89 }
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90
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91 public boolean isRevisionIndexSet() {
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92 return revIdx != BAD_REVISION;
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93 }
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94
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95 @Override
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96 public String getMessage() {
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97 String msg = super.getMessage();
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98 if (msg != null) {
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99 return msg;
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100 }
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101 StringBuilder sb = new StringBuilder();
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102 if (rev != null) {
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103 sb.append("Revision:");
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104 sb.append(rev.shortNotation());
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105 sb.append(' ');
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106 }
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107 if (revIdx != null) {
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108 String sr;
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109 switch (revIdx) {
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110 case BAD_REVISION : sr = "UNKNOWN"; break;
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111 case TIP : sr = "TIP"; break;
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112 case WORKING_COPY: sr = "WORKING-COPY"; break;
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113 case NO_REVISION : sr = "NO REVISION"; break;
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114 default : sr = revIdx.toString();
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115 }
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116 if (rangeLeftBoundary != BAD_REVISION || rangeRightBoundary != BAD_REVISION) {
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117 sb.append(String.format("%s is not from [%d..%d]", sr, rangeLeftBoundary, rangeRightBoundary));
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118 } else {
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119 sb.append(sr);
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120 }
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parents:
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121 }
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122 return sb.toString();
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123 }
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124 }