Mercurial > jhg
annotate src/org/tmatesoft/hg/repo/HgStatusCollector.java @ 98:225c48d964ed
Changelog to HgChangelog, Refactoring doesn't recognize name with inner class
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Thu, 27 Jan 2011 21:27:37 +0100 |
parents | af1f3b78b918 |
children | a3a2e5deb320 |
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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@svnkit.com |
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16 */ |
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17 package org.tmatesoft.hg.repo; |
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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.TIP; |
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21 |
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22 import java.util.Collection; |
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23 import java.util.Collections; |
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24 import java.util.LinkedHashMap; |
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25 import java.util.LinkedList; |
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26 import java.util.List; |
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27 import java.util.Map; |
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28 import java.util.TreeMap; |
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29 import java.util.TreeSet; |
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30 |
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31 import org.tmatesoft.hg.core.Nodeid; |
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32 import org.tmatesoft.hg.core.Path; |
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33 import org.tmatesoft.hg.util.PathPool; |
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34 import org.tmatesoft.hg.util.PathRewrite; |
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35 |
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36 |
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37 /** |
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38 * RevisionWalker? |
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39 * |
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40 * @author Artem Tikhomirov |
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41 * @author TMate Software Ltd. |
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42 */ |
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43 public class HgStatusCollector { |
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44 |
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45 private final HgRepository repo; |
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46 private final Map<Integer, ManifestRevisionInspector> cache; // sparse array, in fact |
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47 private PathPool pathPool; |
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48 |
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49 public HgStatusCollector(HgRepository hgRepo) { |
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50 this.repo = hgRepo; |
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51 cache = new TreeMap<Integer, ManifestRevisionInspector>(); |
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52 ManifestRevisionInspector emptyFakeState = new ManifestRevisionInspector(); |
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53 emptyFakeState.begin(-1, null); |
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54 emptyFakeState.end(-1); // FIXME HgRepo.TIP == -1 as well, need to distinguish fake "prior to first" revision from "the very last" |
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55 cache.put(-1, emptyFakeState); |
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56 } |
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57 |
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58 public HgRepository getRepo() { |
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59 return repo; |
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60 } |
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61 |
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62 private ManifestRevisionInspector get(int rev) { |
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63 ManifestRevisionInspector i = cache.get(rev); |
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64 if (i == null) { |
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65 i = new ManifestRevisionInspector(); |
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66 cache.put(rev, i); |
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67 repo.getManifest().walk(rev, rev, i); |
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68 } |
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69 return i; |
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70 } |
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71 |
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72 /*package-local*/ ManifestRevisionInspector raw(int rev) { |
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73 return get(rev); |
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74 } |
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75 /*package-local*/ PathPool getPathPool() { |
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76 if (pathPool == null) { |
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77 pathPool = new PathPool(new PathRewrite.Empty()); |
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78 } |
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79 return pathPool; |
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80 } |
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81 |
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82 public void setPathPool(PathPool pathPool) { |
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83 this.pathPool = pathPool; |
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84 } |
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85 |
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86 |
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87 // hg status --change <rev> |
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88 public void change(int rev, HgStatusInspector inspector) { |
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89 int[] parents = new int[2]; |
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90 repo.getChangelog().parents(rev, parents, null, null); |
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91 walk(parents[0], rev, inspector); |
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92 } |
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93 |
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94 // I assume revision numbers are the same for changelog and manifest - here |
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95 // user would like to pass changelog revision numbers, and I use them directly to walk manifest. |
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96 // if this assumption is wrong, fix this (lookup manifest revisions from changeset). |
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97 public void walk(int rev1, int rev2, HgStatusInspector inspector) { |
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98 if (rev1 == rev2) { |
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99 throw new IllegalArgumentException(); |
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100 } |
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101 if (inspector == null) { |
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102 throw new IllegalArgumentException(); |
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103 } |
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104 if (inspector instanceof Record) { |
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105 ((Record) inspector).init(rev1, rev2, this); |
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106 } |
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107 if (rev1 == TIP) { |
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108 rev1 = repo.getManifest().getRevisionCount() - 1; |
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109 } |
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110 if (rev2 == TIP) { |
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111 rev2 = repo.getManifest().getRevisionCount() - 1; // XXX add Revlog.tip() func ? |
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112 } |
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113 // in fact, rev1 and rev2 are often next (or close) to each other, |
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114 // thus, we can optimize Manifest reads here (manifest.walk(rev1, rev2)) |
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115 ManifestRevisionInspector r1, r2 ; |
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116 if (!cache.containsKey(rev1) && !cache.containsKey(rev2) && Math.abs(rev1 - rev2) < 5 /*subjective equivalent of 'close enough'*/) { |
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117 int minRev = rev1 < rev2 ? rev1 : rev2; |
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118 int maxRev = minRev == rev1 ? rev2 : rev1; |
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119 if (minRev > 0) { |
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120 minRev--; // expand range a bit |
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121 // XXX perhaps, if revlog.baseRevision is cheap, shall expand minRev up to baseRevision |
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122 // which gonna be read anyway |
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123 } |
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124 |
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125 repo.getManifest().walk(minRev, maxRev, new HgManifest.Inspector() { |
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126 private ManifestRevisionInspector delegate; |
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127 |
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128 public boolean begin(int revision, Nodeid nid) { |
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129 cache.put(revision, delegate = new ManifestRevisionInspector()); |
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130 delegate.begin(revision, nid); |
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131 return true; |
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132 } |
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133 |
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134 public boolean next(Nodeid nid, String fname, String flags) { |
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135 delegate.next(nid, fname, flags); |
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136 return true; |
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137 } |
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138 |
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139 public boolean end(int revision) { |
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140 delegate.end(revision); |
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141 delegate = null; |
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142 return true; |
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143 } |
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144 }); |
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145 } |
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146 r1 = get(rev1); |
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147 r2 = get(rev2); |
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148 |
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149 PathPool pp = getPathPool(); |
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150 |
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151 TreeSet<String> r1Files = new TreeSet<String>(r1.files()); |
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152 for (String fname : r2.files()) { |
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153 if (r1Files.remove(fname)) { |
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154 Nodeid nidR1 = r1.nodeid(fname); |
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155 Nodeid nidR2 = r2.nodeid(fname); |
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156 String flagsR1 = r1.flags(fname); |
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157 String flagsR2 = r2.flags(fname); |
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158 if (nidR1.equals(nidR2) && ((flagsR2 == null && flagsR1 == null) || flagsR2.equals(flagsR1))) { |
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159 inspector.clean(pp.path(fname)); |
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160 } else { |
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161 inspector.modified(pp.path(fname)); |
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162 } |
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163 } else { |
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164 String copyOrigin = getOriginIfCopy(repo, fname, r1Files, rev1); |
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165 if (copyOrigin != null) { |
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166 inspector.copied(pp.path(copyOrigin), pp.path(fname)); |
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167 } else { |
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168 inspector.added(pp.path(fname)); |
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169 } |
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170 } |
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171 } |
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172 for (String left : r1Files) { |
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173 inspector.removed(pp.path(left)); |
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174 } |
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175 } |
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176 |
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177 public Record status(int rev1, int rev2) { |
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178 Record rv = new Record(); |
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179 walk(rev1, rev2, rv); |
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180 return rv; |
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181 } |
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182 |
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183 /*package-local*/static String getOriginIfCopy(HgRepository hgRepo, String fname, Collection<String> originals, int originalChangelogRevision) { |
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184 HgDataFile df = hgRepo.getFileNode(fname); |
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185 while (df.isCopy()) { |
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186 Path original = df.getCopySourceName(); |
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187 if (originals.contains(original.toString())) { |
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188 df = hgRepo.getFileNode(original); |
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189 int changelogRevision = df.getChangesetLocalRevision(0); |
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190 if (changelogRevision <= originalChangelogRevision) { |
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191 // copy/rename source was known prior to rev1 |
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192 // (both r1Files.contains is true and original was created earlier than rev1) |
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193 // without r1Files.contains changelogRevision <= rev1 won't suffice as the file |
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194 // might get removed somewhere in between (changelogRevision < R < rev1) |
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195 return original.toString(); |
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196 } |
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197 break; // copy/rename done later |
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198 } |
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199 df = hgRepo.getFileNode(original); // try more steps away |
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200 } |
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201 return null; |
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202 } |
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203 |
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204 // XXX for r1..r2 status, only modified, added, removed (and perhaps, clean) make sense |
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205 // XXX Need to specify whether copy targets are in added or not (@see Inspector#copied above) |
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206 public static class Record implements HgStatusInspector { |
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207 private List<Path> modified, added, removed, clean, missing, unknown, ignored; |
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208 private Map<Path, Path> copied; |
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209 |
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210 private int startRev, endRev; |
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211 private HgStatusCollector statusHelper; |
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212 |
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213 // XXX StatusCollector may additionally initialize Record instance to speed lookup of changed file revisions |
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214 // here I need access to ManifestRevisionInspector via #raw(). Perhaps, non-static class (to get |
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215 // implicit reference to StatusCollector) may be better? |
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216 // Since users may want to reuse Record instance we've once created (and initialized), we need to |
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217 // ensure functionality is correct for each/any call (#walk checks instanceof Record and fixes it up) |
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218 // Perhaps, distinct helper (sc.getRevisionHelper().nodeid(fname)) would be better, just not clear |
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219 // how to supply [start..end] values there easily |
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220 /*package-local*/void init(int startRevision, int endRevision, HgStatusCollector self) { |
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221 startRev = startRevision; |
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222 endRev = endRevision; |
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223 statusHelper = self; |
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224 } |
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225 |
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226 public Nodeid nodeidBeforeChange(Path fname) { |
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227 if (statusHelper == null || startRev == BAD_REVISION) { |
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228 return null; |
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229 } |
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230 if ((modified == null || !modified.contains(fname)) && (removed == null || !removed.contains(fname))) { |
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231 return null; |
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232 } |
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233 return statusHelper.raw(startRev).nodeid(fname.toString()); |
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234 } |
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235 public Nodeid nodeidAfterChange(Path fname) { |
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236 if (statusHelper == null || endRev == BAD_REVISION) { |
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237 return null; |
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238 } |
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239 if ((modified == null || !modified.contains(fname)) && (added == null || !added.contains(fname))) { |
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240 return null; |
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241 } |
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242 return statusHelper.raw(endRev).nodeid(fname.toString()); |
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243 } |
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244 |
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245 public List<Path> getModified() { |
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246 return proper(modified); |
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247 } |
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248 |
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249 public List<Path> getAdded() { |
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250 return proper(added); |
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251 } |
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252 |
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253 public List<Path> getRemoved() { |
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254 return proper(removed); |
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255 } |
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256 |
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257 public Map<Path,Path> getCopied() { |
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258 if (copied == null) { |
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259 return Collections.emptyMap(); |
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260 } |
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261 return Collections.unmodifiableMap(copied); |
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262 } |
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263 |
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264 public List<Path> getClean() { |
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265 return proper(clean); |
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266 } |
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267 |
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268 public List<Path> getMissing() { |
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269 return proper(missing); |
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270 } |
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271 |
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272 public List<Path> getUnknown() { |
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273 return proper(unknown); |
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274 } |
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275 |
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276 public List<Path> getIgnored() { |
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277 return proper(ignored); |
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278 } |
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279 |
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280 private List<Path> proper(List<Path> l) { |
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281 if (l == null) { |
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282 return Collections.emptyList(); |
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283 } |
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284 return Collections.unmodifiableList(l); |
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285 } |
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286 |
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287 // |
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288 // |
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289 |
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290 public void modified(Path fname) { |
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291 modified = doAdd(modified, fname); |
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292 } |
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293 |
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294 public void added(Path fname) { |
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295 added = doAdd(added, fname); |
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296 } |
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297 |
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298 public void copied(Path fnameOrigin, Path fnameAdded) { |
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299 if (copied == null) { |
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300 copied = new LinkedHashMap<Path, Path>(); |
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301 } |
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302 added(fnameAdded); |
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303 copied.put(fnameAdded, fnameOrigin); |
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304 } |
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305 |
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306 public void removed(Path fname) { |
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307 removed = doAdd(removed, fname); |
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308 } |
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309 |
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310 public void clean(Path fname) { |
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311 clean = doAdd(clean, fname); |
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312 } |
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313 |
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314 public void missing(Path fname) { |
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315 missing = doAdd(missing, fname); |
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316 } |
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317 |
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318 public void unknown(Path fname) { |
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319 unknown = doAdd(unknown, fname); |
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320 } |
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321 |
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322 public void ignored(Path fname) { |
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323 ignored = doAdd(ignored, fname); |
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324 } |
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325 |
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326 private static List<Path> doAdd(List<Path> l, Path p) { |
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327 if (l == null) { |
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328 l = new LinkedList<Path>(); |
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329 } |
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330 l.add(p); |
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331 return l; |
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332 } |
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333 } |
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334 |
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335 /*package-local*/ static final class ManifestRevisionInspector implements HgManifest.Inspector { |
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336 private final TreeMap<String, Nodeid> idsMap; |
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337 private final TreeMap<String, String> flagsMap; |
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338 |
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339 public ManifestRevisionInspector() { |
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340 idsMap = new TreeMap<String, Nodeid>(); |
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341 flagsMap = new TreeMap<String, String>(); |
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342 } |
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343 |
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344 public Collection<String> files() { |
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345 return idsMap.keySet(); |
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346 } |
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347 |
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348 public Nodeid nodeid(String fname) { |
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349 return idsMap.get(fname); |
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350 } |
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351 |
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352 public String flags(String fname) { |
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353 return flagsMap.get(fname); |
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354 } |
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355 |
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356 // |
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357 |
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358 public boolean next(Nodeid nid, String fname, String flags) { |
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359 idsMap.put(fname, nid); |
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360 flagsMap.put(fname, flags); |
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361 return true; |
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362 } |
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363 |
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364 public boolean end(int revision) { |
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365 // in fact, this class cares about single revision |
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366 return false; |
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367 } |
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368 |
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369 public boolean begin(int revision, Nodeid nid) { |
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370 return true; |
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371 } |
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372 } |
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373 |
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374 } |