Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgStatusCollector.java @ 176:a8df7162ec75

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 02 Apr 2011 03:01:14 +0200
parents d5268ca7715b
children c9b305df0b89
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.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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31 import org.tmatesoft.hg.core.HgDataStreamException;
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32 import org.tmatesoft.hg.core.Nodeid;
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33 import org.tmatesoft.hg.util.Path;
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34 import org.tmatesoft.hg.util.PathPool;
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35 import org.tmatesoft.hg.util.PathRewrite;
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37
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38 /**
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39 * RevisionWalker?
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40 *
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41 * @author Artem Tikhomirov
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42 * @author TMate Software Ltd.
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43 */
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44 public class HgStatusCollector {
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46 private final HgRepository repo;
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47 private final Map<Integer, ManifestRevisionInspector> cache; // sparse array, in fact
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48 private PathPool pathPool;
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49
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50 public HgStatusCollector(HgRepository hgRepo) {
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51 this.repo = hgRepo;
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52 cache = new TreeMap<Integer, ManifestRevisionInspector>();
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53 ManifestRevisionInspector emptyFakeState = new ManifestRevisionInspector();
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54 emptyFakeState.begin(-1, null);
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55 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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56 cache.put(-1, emptyFakeState);
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57 }
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59 public HgRepository getRepo() {
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60 return repo;
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61 }
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63 private ManifestRevisionInspector get(int rev) {
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64 ManifestRevisionInspector i = cache.get(rev);
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65 if (i == null) {
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66 i = new ManifestRevisionInspector();
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67 cache.put(rev, i);
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68 repo.getManifest().walk(rev, rev, i);
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69 }
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70 return i;
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71 }
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73 /*package-local*/ ManifestRevisionInspector raw(int rev) {
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74 return get(rev);
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75 }
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76 /*package-local*/ PathPool getPathPool() {
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77 if (pathPool == null) {
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78 pathPool = new PathPool(new PathRewrite.Empty());
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79 }
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80 return pathPool;
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81 }
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83 /**
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84 * Allows sharing of a common path cache
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85 */
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86 public void setPathPool(PathPool pathPool) {
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87 this.pathPool = pathPool;
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88 }
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91 // hg status --change <rev>
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92 public void change(int rev, HgStatusInspector inspector) {
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93 int[] parents = new int[2];
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94 repo.getChangelog().parents(rev, parents, null, null);
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95 walk(parents[0], rev, inspector);
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96 }
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98 // I assume revision numbers are the same for changelog and manifest - here
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99 // user would like to pass changelog revision numbers, and I use them directly to walk manifest.
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100 // if this assumption is wrong, fix this (lookup manifest revisions from changeset).
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101 public void walk(int rev1, int rev2, HgStatusInspector inspector) {
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102 if (rev1 == rev2) {
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103 throw new IllegalArgumentException();
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104 }
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105 if (inspector == null) {
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106 throw new IllegalArgumentException();
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107 }
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108 if (inspector instanceof Record) {
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109 ((Record) inspector).init(rev1, rev2, this);
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110 }
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111 if (rev1 == TIP) {
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112 rev1 = repo.getManifest().getLastRevision();
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113 }
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114 if (rev2 == TIP) {
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115 rev2 = repo.getManifest().getLastRevision();
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116 }
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117 // in fact, rev1 and rev2 are often next (or close) to each other,
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118 // thus, we can optimize Manifest reads here (manifest.walk(rev1, rev2))
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119 ManifestRevisionInspector r1, r2 ;
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120 if (!cache.containsKey(rev1) && !cache.containsKey(rev2) && Math.abs(rev1 - rev2) < 5 /*subjective equivalent of 'close enough'*/) {
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121 int minRev = rev1 < rev2 ? rev1 : rev2;
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122 int maxRev = minRev == rev1 ? rev2 : rev1;
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123 if (minRev > 0) {
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124 minRev--; // expand range a bit
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125 // XXX perhaps, if revlog.baseRevision is cheap, shall expand minRev up to baseRevision
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126 // which gonna be read anyway
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127 }
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128
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129 repo.getManifest().walk(minRev, maxRev, new HgManifest.Inspector() {
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130 private ManifestRevisionInspector delegate;
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131
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132 public boolean begin(int revision, Nodeid nid) {
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133 cache.put(revision, delegate = new ManifestRevisionInspector());
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134 delegate.begin(revision, nid);
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135 return true;
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136 }
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137
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138 public boolean next(Nodeid nid, String fname, String flags) {
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139 delegate.next(nid, fname, flags);
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140 return true;
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141 }
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142
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143 public boolean end(int revision) {
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144 delegate.end(revision);
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145 delegate = null;
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146 return true;
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147 }
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148 });
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149 }
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150 r1 = get(rev1);
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151 r2 = get(rev2);
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152
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153 PathPool pp = getPathPool();
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154
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155 TreeSet<String> r1Files = new TreeSet<String>(r1.files());
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156 for (String fname : r2.files()) {
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157 if (r1Files.remove(fname)) {
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158 Nodeid nidR1 = r1.nodeid(fname);
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159 Nodeid nidR2 = r2.nodeid(fname);
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160 String flagsR1 = r1.flags(fname);
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161 String flagsR2 = r2.flags(fname);
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162 if (nidR1.equals(nidR2) && ((flagsR2 == null && flagsR1 == null) || flagsR2.equals(flagsR1))) {
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163 inspector.clean(pp.path(fname));
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164 } else {
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165 inspector.modified(pp.path(fname));
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166 }
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167 } else {
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168 try {
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169 Path copyTarget = pp.path(fname);
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170 Path copyOrigin = getOriginIfCopy(repo, copyTarget, r1Files, rev1);
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171 if (copyOrigin != null) {
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172 inspector.copied(pp.path(copyOrigin) /*pipe through pool, just in case*/, copyTarget);
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173 } else {
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174 inspector.added(copyTarget);
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175 }
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176 } catch (HgDataStreamException ex) {
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177 ex.printStackTrace();
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178 // FIXME perhaps, shall record this exception to dedicated mediator and continue
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179 // for a single file not to be irresolvable obstacle for a status operation
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180 }
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181 }
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182 }
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183 for (String left : r1Files) {
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184 inspector.removed(pp.path(left));
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185 }
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186 }
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187
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188 public Record status(int rev1, int rev2) {
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189 Record rv = new Record();
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190 walk(rev1, rev2, rv);
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191 return rv;
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192 }
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193
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194 /*package-local*/static Path getOriginIfCopy(HgRepository hgRepo, Path fname, Collection<String> originals, int originalChangelogRevision) throws HgDataStreamException {
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195 HgDataFile df = hgRepo.getFileNode(fname);
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196 while (df.isCopy()) {
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197 Path original = df.getCopySourceName();
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198 if (originals.contains(original.toString())) {
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199 df = hgRepo.getFileNode(original);
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200 int changelogRevision = df.getChangesetLocalRevision(0);
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201 if (changelogRevision <= originalChangelogRevision) {
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202 // copy/rename source was known prior to rev1
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203 // (both r1Files.contains is true and original was created earlier than rev1)
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204 // without r1Files.contains changelogRevision <= rev1 won't suffice as the file
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205 // might get removed somewhere in between (changelogRevision < R < rev1)
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206 return original;
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207 }
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208 break; // copy/rename done later
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209 }
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210 df = hgRepo.getFileNode(original); // try more steps away
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211 }
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212 return null;
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213 }
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214
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215 // XXX for r1..r2 status, only modified, added, removed (and perhaps, clean) make sense
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216 // XXX Need to specify whether copy targets are in added or not (@see Inspector#copied above)
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217 public static class Record implements HgStatusInspector {
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218 private List<Path> modified, added, removed, clean, missing, unknown, ignored;
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219 private Map<Path, Path> copied;
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220
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221 private int startRev, endRev;
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222 private HgStatusCollector statusHelper;
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224 // XXX StatusCollector may additionally initialize Record instance to speed lookup of changed file revisions
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225 // here I need access to ManifestRevisionInspector via #raw(). Perhaps, non-static class (to get
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226 // implicit reference to StatusCollector) may be better?
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227 // Since users may want to reuse Record instance we've once created (and initialized), we need to
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228 // ensure functionality is correct for each/any call (#walk checks instanceof Record and fixes it up)
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229 // Perhaps, distinct helper (sc.getRevisionHelper().nodeid(fname)) would be better, just not clear
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230 // how to supply [start..end] values there easily
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231 /*package-local*/void init(int startRevision, int endRevision, HgStatusCollector self) {
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232 startRev = startRevision;
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233 endRev = endRevision;
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234 statusHelper = self;
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235 }
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236
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237 public Nodeid nodeidBeforeChange(Path fname) {
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238 if (statusHelper == null || startRev == BAD_REVISION) {
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239 return null;
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240 }
64
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241 if ((modified == null || !modified.contains(fname)) && (removed == null || !removed.contains(fname))) {
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242 return null;
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243 }
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244 return statusHelper.raw(startRev).nodeid(fname.toString());
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245 }
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246 public Nodeid nodeidAfterChange(Path fname) {
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247 if (statusHelper == null || endRev == BAD_REVISION) {
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248 return null;
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249 }
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250 if ((modified == null || !modified.contains(fname)) && (added == null || !added.contains(fname))) {
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251 return null;
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252 }
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253 return statusHelper.raw(endRev).nodeid(fname.toString());
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254 }
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255
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256 public List<Path> getModified() {
55
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257 return proper(modified);
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258 }
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259
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260 public List<Path> getAdded() {
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261 return proper(added);
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262 }
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263
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264 public List<Path> getRemoved() {
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265 return proper(removed);
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266 }
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267
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268 public Map<Path,Path> getCopied() {
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269 if (copied == null) {
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270 return Collections.emptyMap();
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271 }
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272 return Collections.unmodifiableMap(copied);
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273 }
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274
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275 public List<Path> getClean() {
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276 return proper(clean);
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277 }
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278
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279 public List<Path> getMissing() {
55
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280 return proper(missing);
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281 }
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282
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283 public List<Path> getUnknown() {
55
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284 return proper(unknown);
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285 }
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286
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287 public List<Path> getIgnored() {
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288 return proper(ignored);
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289 }
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290
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291 private List<Path> proper(List<Path> l) {
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292 if (l == null) {
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293 return Collections.emptyList();
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294 }
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295 return Collections.unmodifiableList(l);
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296 }
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297
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298 //
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299 //
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300
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301 public void modified(Path fname) {
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302 modified = doAdd(modified, fname);
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303 }
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304
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305 public void added(Path fname) {
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306 added = doAdd(added, fname);
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307 }
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308
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309 public void copied(Path fnameOrigin, Path fnameAdded) {
55
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310 if (copied == null) {
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311 copied = new LinkedHashMap<Path, Path>();
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312 }
74
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diff changeset
313 added(fnameAdded);
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diff changeset
314 copied.put(fnameAdded, fnameOrigin);
55
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315 }
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316
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317 public void removed(Path fname) {
55
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318 removed = doAdd(removed, fname);
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319 }
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320
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321 public void clean(Path fname) {
55
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322 clean = doAdd(clean, fname);
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323 }
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324
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325 public void missing(Path fname) {
55
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326 missing = doAdd(missing, fname);
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327 }
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328
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329 public void unknown(Path fname) {
55
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330 unknown = doAdd(unknown, fname);
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331 }
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332
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333 public void ignored(Path fname) {
55
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334 ignored = doAdd(ignored, fname);
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335 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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336
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337 private static List<Path> doAdd(List<Path> l, Path p) {
55
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338 if (l == null) {
93
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diff changeset
339 l = new LinkedList<Path>();
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340 }
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341 l.add(p);
55
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342 return l;
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343 }
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344 }
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345
89
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diff changeset
346 /*package-local*/ static final class ManifestRevisionInspector implements HgManifest.Inspector {
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diff changeset
347 private final TreeMap<String, Nodeid> idsMap;
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diff changeset
348 private final TreeMap<String, String> flagsMap;
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349
89
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350 public ManifestRevisionInspector() {
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diff changeset
351 idsMap = new TreeMap<String, Nodeid>();
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diff changeset
352 flagsMap = new TreeMap<String, String>();
55
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353 }
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354
89
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355 public Collection<String> files() {
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diff changeset
356 return idsMap.keySet();
55
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357 }
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358
89
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359 public Nodeid nodeid(String fname) {
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360 return idsMap.get(fname);
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361 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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362
89
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diff changeset
363 public String flags(String fname) {
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diff changeset
364 return flagsMap.get(fname);
55
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diff changeset
365 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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366
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
367 //
05829a70b30b Status operation extracted into separate, cache-friendly class
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368
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
369 public boolean next(Nodeid nid, String fname, String flags) {
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diff changeset
370 idsMap.put(fname, nid);
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diff changeset
371 flagsMap.put(fname, flags);
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372 return true;
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373 }
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374
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375 public boolean end(int revision) {
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376 // in fact, this class cares about single revision
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377 return false;
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378 }
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379
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380 public boolean begin(int revision, Nodeid nid) {
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381 return true;
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382 }
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383 }
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384
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385 }