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annotate src/org/tmatesoft/hg/internal/PhasesHelper.java @ 649:e79cf9a8130b

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Push: phase4 - update local and remote phase information
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 26 Jun 2013 20:52:38 +0200
parents 690e71d29bf6
children 3b275cc2d2aa
rev   line source
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1 /*
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2 * Copyright (c) 2012-2013 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.HgPhase.Draft;
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20 import static org.tmatesoft.hg.repo.HgPhase.Secret;
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21 import static org.tmatesoft.hg.repo.HgRepositoryFiles.Phaseroots;
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22 import static org.tmatesoft.hg.util.LogFacility.Severity.Warn;
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23
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24 import java.io.File;
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25 import java.io.FileWriter;
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26 import java.io.IOException;
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27 import java.util.ArrayList;
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28 import java.util.Collection;
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29 import java.util.Collections;
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30 import java.util.HashMap;
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31 import java.util.LinkedList;
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32 import java.util.List;
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33
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34 import org.tmatesoft.hg.core.HgChangeset;
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35 import org.tmatesoft.hg.core.HgIOException;
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36 import org.tmatesoft.hg.core.Nodeid;
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37 import org.tmatesoft.hg.repo.HgChangelog;
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38 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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39 import org.tmatesoft.hg.repo.HgParentChildMap;
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40 import org.tmatesoft.hg.repo.HgPhase;
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41 import org.tmatesoft.hg.repo.HgRepository;
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42 import org.tmatesoft.hg.repo.HgRuntimeException;
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43
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44 /**
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45 * Support to deal with Mercurial phases feature (as of Mercurial version 2.1)
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46 *
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47 * @see http://mercurial.selenic.com/wiki/Phases
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48 * @see http://mercurial.selenic.com/wiki/PhasesDevel
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49 *
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50 * @author Artem Tikhomirov
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51 * @author TMate Software Ltd.
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52 */
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53 public final class PhasesHelper {
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54
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55 private final Internals repo;
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56 private final HgParentChildMap<HgChangelog> parentHelper;
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57 private Boolean repoSupporsPhases;
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58 private List<Nodeid> draftPhaseRoots;
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59 private List<Nodeid> secretPhaseRoots;
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60 private RevisionDescendants[][] phaseDescendants = new RevisionDescendants[HgPhase.values().length][];
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61
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62 public PhasesHelper(Internals internalRepo) {
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63 this(internalRepo, null);
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64 }
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65
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66 public PhasesHelper(Internals internalRepo, HgParentChildMap<HgChangelog> pw) {
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67 repo = internalRepo;
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68 parentHelper = pw;
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69 }
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70
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71 public HgRepository getRepo() {
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72 return repo.getRepo();
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73 }
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74
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75 public boolean isCapableOfPhases() throws HgRuntimeException {
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76 if (null == repoSupporsPhases) {
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77 repoSupporsPhases = readRoots();
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78 }
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79 return repoSupporsPhases.booleanValue();
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80 }
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81
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82
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83 /**
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84 * @param cset revision to query
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85 * @return phase of the changeset, never <code>null</code>
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86 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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87 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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88 */
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89 public HgPhase getPhase(HgChangeset cset) throws HgRuntimeException {
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90 final Nodeid csetRev = cset.getNodeid();
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91 final int csetRevIndex = cset.getRevisionIndex();
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92 return getPhase(csetRevIndex, csetRev);
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93 }
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94
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95 /**
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96 * @param csetRevIndex revision index to query
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97 * @param csetRev revision nodeid, optional
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98 * @return phase of the changeset, never <code>null</code>
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99 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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100 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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101 */
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102 public HgPhase getPhase(final int csetRevIndex, Nodeid csetRev) throws HgRuntimeException {
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103 if (!isCapableOfPhases()) {
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104 return HgPhase.Undefined;
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105 }
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106 // csetRev is only used when parentHelper is available
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107 if (parentHelper != null && (csetRev == null || csetRev.isNull())) {
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108 csetRev = getRepo().getChangelog().getRevision(csetRevIndex);
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109 }
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110
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111 for (HgPhase phase : new HgPhase[] {HgPhase.Secret, HgPhase.Draft }) {
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112 List<Nodeid> roots = getPhaseRoots(phase);
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113 if (roots.isEmpty()) {
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114 continue;
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115 }
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116 if (parentHelper != null) {
449
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117 if (roots.contains(csetRev)) {
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118 return phase;
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119 }
445
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120 if (parentHelper.childrenOf(roots).contains(csetRev)) {
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121 return phase;
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122 }
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123 } else {
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124 // no parent helper
449
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125 // search all descendants.RevisuionDescendats includes root as well.
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126 for (RevisionDescendants rd : getPhaseDescendants(phase)) {
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127 // isCandidate is to go straight to another root if changeset was added later that the current root
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128 if (rd.isCandidate(csetRevIndex) && rd.isDescendant(csetRevIndex)) {
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diff changeset
129 return phase;
445
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130 }
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131 }
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132 }
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133 }
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134 return HgPhase.Public;
648
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135 }
445
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136
648
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137
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138 /**
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139 * @return all revisions with secret phase
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140 */
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141 public RevisionSet allSecret() {
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142 return allOf(HgPhase.Secret);
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143 }
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144
649
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145 /**
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146 * @return all revisions with draft phase
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147 */
648
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148 public RevisionSet allDraft() {
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149 return allOf(HgPhase.Draft).subtract(allOf(HgPhase.Secret));
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150 }
649
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151
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152 public void updateRoots(Collection<Nodeid> draftRoots, Collection<Nodeid> secretRoots) throws HgInvalidControlFileException {
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153 draftPhaseRoots = draftRoots.isEmpty() ? Collections.<Nodeid>emptyList() : new ArrayList<Nodeid>(draftRoots);
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154 secretPhaseRoots = secretRoots.isEmpty() ? Collections.<Nodeid>emptyList() : new ArrayList<Nodeid>(secretRoots);
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155 String fmt = "%d %s\n";
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156 File phaseroots = repo.getRepositoryFile(Phaseroots);
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157 FileWriter fw = null;
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158 try {
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159 fw = new FileWriter(phaseroots);
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160 for (Nodeid n : secretPhaseRoots) {
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161 fw.write(String.format(fmt, HgPhase.Secret.mercurialOrdinal(), n.toString()));
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162 }
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163 for (Nodeid n : draftPhaseRoots) {
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164 fw.write(String.format(fmt, HgPhase.Draft.mercurialOrdinal(), n.toString()));
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165 }
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166 fw.flush();
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167 } catch (IOException ex) {
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168 throw new HgInvalidControlFileException(ex.getMessage(), ex, phaseroots);
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169 } finally {
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170 new FileUtils(repo.getLog()).closeQuietly(fw);
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171 }
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172 }
648
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173
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174 /**
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175 * For a given phase, collect all revisions with phase that is the same or more private (i.e. for Draft, returns Draft+Secret)
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176 * The reason is not a nice API intention (which is awful, indeed), but an ease of implementation
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177 */
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178 private RevisionSet allOf(HgPhase phase) {
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179 assert phase != HgPhase.Public;
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180 if (!isCapableOfPhases()) {
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181 return new RevisionSet(Collections.<Nodeid>emptyList());
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182 }
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183 final List<Nodeid> roots = getPhaseRoots(phase);
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184 if (parentHelper != null) {
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diff changeset
185 return new RevisionSet(roots).union(new RevisionSet(parentHelper.childrenOf(roots)));
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186 } else {
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187 RevisionSet rv = new RevisionSet(Collections.<Nodeid>emptyList());
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188 for (RevisionDescendants rd : getPhaseDescendants(phase)) {
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diff changeset
189 rv = rv.union(rd.asRevisionSet());
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190 }
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191 return rv;
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192 }
445
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193 }
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194
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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diff changeset
195 private Boolean readRoots() throws HgRuntimeException {
647
c75297c17867 Location of repository files as enumeration, use file constants instead of plain names
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196 File phaseroots = repo.getRepositoryFile(Phaseroots);
445
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197 try {
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198 if (!phaseroots.exists()) {
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199 return Boolean.FALSE;
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200 }
649
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201 LineReader lr = new LineReader(phaseroots, repo.getLog());
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202 final Collection<String> lines = lr.read(new LineReader.SimpleLineCollector(), new LinkedList<String>());
445
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203 HashMap<HgPhase, List<Nodeid>> phase2roots = new HashMap<HgPhase, List<Nodeid>>();
649
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204 for (String line : lines) {
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diff changeset
205 String[] lc = line.split("\\s+");
445
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206 if (lc.length == 0) {
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207 continue;
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208 }
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209 if (lc.length != 2) {
501
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diff changeset
210 repo.getSessionContext().getLog().dump(getClass(), Warn, "Bad line in phaseroots:%s", line);
445
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211 continue;
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212 }
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213 int phaseIndex = Integer.parseInt(lc[0]);
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214 Nodeid rootRev = Nodeid.fromAscii(lc[1]);
493
ba36f66c32b4 Refactor to keep knowledge about repository control files and their location in respect to .hg/ in a single place (facilitate future adoption of shared repositories)
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parents: 490
diff changeset
215 if (!getRepo().getChangelog().isKnown(rootRev)) {
501
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parents: 493
diff changeset
216 repo.getSessionContext().getLog().dump(getClass(), Warn, "Phase(%d) root node %s doesn't exist in the repository, ignored.", phaseIndex, rootRev);
451
39fe00407937 HgBadStateException in ParentWalker.assertSortedIndex when phaseroots lists non-existent revision
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diff changeset
217 continue;
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diff changeset
218 }
445
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219 HgPhase phase = HgPhase.parse(phaseIndex);
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220 List<Nodeid> roots = phase2roots.get(phase);
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221 if (roots == null) {
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diff changeset
222 phase2roots.put(phase, roots = new LinkedList<Nodeid>());
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223 }
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224 roots.add(rootRev);
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225 }
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226 draftPhaseRoots = phase2roots.containsKey(Draft) ? phase2roots.get(Draft) : Collections.<Nodeid>emptyList();
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227 secretPhaseRoots = phase2roots.containsKey(Secret) ? phase2roots.get(Secret) : Collections.<Nodeid>emptyList();
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228 } catch (HgIOException ex) {
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diff changeset
229 throw new HgInvalidControlFileException(ex, true);
445
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230 }
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231 return Boolean.TRUE;
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232 }
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233
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234 private List<Nodeid> getPhaseRoots(HgPhase phase) {
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235 switch (phase) {
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236 case Draft : return draftPhaseRoots;
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237 case Secret : return secretPhaseRoots;
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238 }
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239 return Collections.emptyList();
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240 }
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241
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242
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243 private RevisionDescendants[] getPhaseDescendants(HgPhase phase) throws HgRuntimeException {
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244 int ordinal = phase.ordinal();
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245 if (phaseDescendants[ordinal] == null) {
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246 phaseDescendants[ordinal] = buildPhaseDescendants(phase);
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247 }
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248 return phaseDescendants[ordinal];
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249 }
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250
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251 private RevisionDescendants[] buildPhaseDescendants(HgPhase phase) throws HgRuntimeException {
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252 int[] roots = toIndexes(getPhaseRoots(phase));
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253 RevisionDescendants[] rv = new RevisionDescendants[roots.length];
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254 for (int i = 0; i < roots.length; i++) {
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255 rv[i] = new RevisionDescendants(getRepo(), roots[i]);
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256 rv[i].build();
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257 }
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258 return rv;
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259 }
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260
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261 private int[] toIndexes(List<Nodeid> roots) throws HgRuntimeException {
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262 int[] rv = new int[roots.size()];
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263 for (int i = 0; i < rv.length; i++) {
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264 rv[i] = getRepo().getChangelog().getRevisionIndex(roots.get(i));
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265 }
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266 return rv;
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267 }
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268 }