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annotate src/org/tmatesoft/hg/internal/ExceptionInfo.java @ 681:4f93bbc73b64

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Do not instantiate thousands of small arrays(numerous readInt/readLong calls)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sun, 21 Jul 2013 17:48:05 +0200
parents cdd53e5884ae
children
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1 /*
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2 * Copyright (c) 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.internal;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
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20 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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21 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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22 import static org.tmatesoft.hg.repo.HgRepository.WORKING_COPY;
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23
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24 import java.io.File;
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25
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26 import org.tmatesoft.hg.core.Nodeid;
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27 import org.tmatesoft.hg.repo.HgRepository;
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28 import org.tmatesoft.hg.util.Path;
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29
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30 /**
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31 * Extras to record with exception to describe it better.
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32 * XXX perhaps, not only with exception, may utilize it with status object?
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33 *
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34 * @author Artem Tikhomirov
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35 * @author TMate Software Ltd.
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36 */
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37 public class ExceptionInfo<T> {
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38 protected final T owner;
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39 protected Integer revNumber = null;
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40 protected Nodeid revision;
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41 protected Path filename;
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42 protected File localFile;
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43 // next two make sense only when revNumber was set
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44 private int rangeLeftBoundary = BAD_REVISION, rangeRightBoundary = BAD_REVISION;
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45
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46 /**
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47 * @param owner instance to return from setters
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48 */
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49 public ExceptionInfo(T owner) {
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50 this.owner = owner;
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51 }
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52
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53 /**
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54 * @return not {@link HgRepository#BAD_REVISION} only when revision index was supplied at the construction time
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55 */
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56 public int getRevisionIndex() {
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57 return revNumber == null ? HgRepository.BAD_REVISION : revNumber;
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58 }
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59
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60 public T setRevisionIndex(int rev) {
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61 revNumber = rev;
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62 return owner;
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63 }
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64
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65 public boolean isRevisionIndexSet() {
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66 return revNumber != null;
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67 }
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68
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69 /**
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70 * @return non-null only when revision was supplied at construction time
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71 */
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72 public Nodeid getRevision() {
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73 return revision;
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74 }
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75
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76 public T setRevision(Nodeid r) {
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77 revision = r;
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78 return owner;
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79 }
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80
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81 public boolean isRevisionSet() {
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82 return revision != null;
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83 }
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84
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85 /**
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86 * @return non-null only if file name was set at construction time
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87 */
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88 public Path getFileName() {
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89 return filename;
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90 }
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91
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92 public T setFileName(Path name) {
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93 filename = name;
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94 return owner;
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95 }
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96
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97 public T setFile(File file) {
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98 localFile = file;
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99 return owner;
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100 }
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101
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102 /**
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103 * @return file object that causes troubles, or <code>null</code> if specific file is unknown
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104 */
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105 public File getFile() {
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106 return localFile;
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107 }
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108
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109 public T setRevisionIndexBoundary(int revisionIndex, int rangeLeft, int rangeRight) {
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110 setRevisionIndex(revisionIndex);
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111 rangeLeftBoundary = rangeLeft;
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112 rangeRightBoundary = rangeRight;
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113 return owner;
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114 }
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115
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116 public StringBuilder appendDetails(StringBuilder sb) {
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117 if (filename != null) {
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118 sb.append("path:'");
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119 sb.append(filename);
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120 sb.append('\'');
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121 sb.append(';');
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122 sb.append(' ');
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123 }
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124 if (isRevisionIndexSet() || isRevisionSet()) {
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125 if (isRevisionIndexSet()) {
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126 if (rangeLeftBoundary != BAD_REVISION || rangeRightBoundary != BAD_REVISION) {
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127 String sr;
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128 switch (getRevisionIndex()) {
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129 case BAD_REVISION:
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130 sr = "UNKNOWN"; break;
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131 case TIP:
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132 sr = "TIP"; break;
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133 case WORKING_COPY:
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134 sr = "WORKING-COPY"; break;
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135 case NO_REVISION:
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136 sr = "NO REVISION"; break;
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137 default:
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138 sr = String.valueOf(getRevisionIndex());
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139 }
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140 sb.append(String.format("%s is not from [%d..%d]", sr, rangeLeftBoundary, rangeRightBoundary));
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141 } else {
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142 sb.append("rev:");
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143 sb.append(getRevisionIndex());
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144 if (isRevisionSet()) {
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145 sb.append(':');
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146 // fall-through to get revision appended
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147 }
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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148 }
403
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149 }
485
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150 if (isRevisionSet()) {
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151 sb.append(getRevision().shortNotation());
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152 }
403
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153 }
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154 if (localFile != null) {
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155 sb.append(';');
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156 sb.append(' ');
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157 sb.append(" file:");
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158 sb.append(localFile.getPath());
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159 sb.append(',');
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160 if (localFile.exists()) {
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161 sb.append("EXISTS");
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162 } else {
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163 sb.append("DOESN'T EXIST");
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164 }
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165 }
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166 return sb;
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167 }
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168 }