Mercurial > hg4j
annotate src/org/tmatesoft/hg/core/HgIncomingCommand.java @ 568:8ed4f4f4f0a6
Blame facility refactored, get ready for follow/no-follow support
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Wed, 10 Apr 2013 15:45:53 +0200 |
parents | 2f9ed6bcefa2 |
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1 /* |
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2 * Copyright (c) 2011-2012 TMate Software Ltd |
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3 * |
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4 * This program is free software; you can redistribute it and/or modify |
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5 * it under the terms of the GNU General Public License as published by |
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6 * the Free Software Foundation; version 2 of the License. |
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7 * |
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8 * This program is distributed in the hope that it will be useful, |
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 * GNU General Public License for more details. |
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12 * |
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13 * For information on how to redistribute this software under |
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14 * the terms of a license other than GNU General Public License |
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15 * contact TMate Software at support@hg4j.com |
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16 */ |
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17 package org.tmatesoft.hg.core; |
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18 |
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19 import java.util.ArrayList; |
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20 import java.util.HashSet; |
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21 import java.util.Iterator; |
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22 import java.util.LinkedHashSet; |
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23 import java.util.LinkedList; |
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24 import java.util.List; |
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25 import java.util.Set; |
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26 import java.util.TreeSet; |
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27 |
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28 import org.tmatesoft.hg.internal.Internals; |
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29 import org.tmatesoft.hg.internal.RepositoryComparator; |
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30 import org.tmatesoft.hg.internal.RepositoryComparator.BranchChain; |
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31 import org.tmatesoft.hg.repo.HgBundle; |
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32 import org.tmatesoft.hg.repo.HgChangelog; |
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33 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset; |
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34 import org.tmatesoft.hg.repo.HgInvalidControlFileException; |
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35 import org.tmatesoft.hg.repo.HgInvalidStateException; |
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36 import org.tmatesoft.hg.repo.HgRemoteRepository; |
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37 import org.tmatesoft.hg.repo.HgRepository; |
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38 import org.tmatesoft.hg.repo.HgRuntimeException; |
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39 import org.tmatesoft.hg.repo.HgParentChildMap; |
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40 import org.tmatesoft.hg.util.CancelledException; |
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41 import org.tmatesoft.hg.util.ProgressSupport; |
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42 |
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43 /** |
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44 * Command to find out changes available in a remote repository, missing locally. |
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45 * |
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46 * @author Artem Tikhomirov |
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47 * @author TMate Software Ltd. |
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48 */ |
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49 public class HgIncomingCommand extends HgAbstractCommand<HgIncomingCommand> { |
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50 |
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51 private final HgRepository localRepo; |
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52 private HgRemoteRepository remoteRepo; |
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53 @SuppressWarnings("unused") |
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54 private boolean includeSubrepo; |
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55 private RepositoryComparator comparator; |
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56 private List<BranchChain> missingBranches; |
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57 private HgParentChildMap<HgChangelog> parentHelper; |
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58 private Set<String> branches; |
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59 |
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60 public HgIncomingCommand(HgRepository hgRepo) { |
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61 localRepo = hgRepo; |
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62 } |
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63 |
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64 public HgIncomingCommand against(HgRemoteRepository hgRemote) { |
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65 remoteRepo = hgRemote; |
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66 comparator = null; |
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67 missingBranches = null; |
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68 return this; |
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69 } |
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70 |
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71 /** |
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72 * Select specific branch to push. |
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73 * Multiple branch specification possible (changeset from any of these would be included in result). |
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74 * Note, {@link #executeLite()} does not respect this setting. |
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75 * |
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76 * @param branch - branch name, case-sensitive, non-null. |
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77 * @return <code>this</code> for convenience |
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78 * @throws IllegalArgumentException when branch argument is null |
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79 */ |
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80 public HgIncomingCommand branch(String branch) { |
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81 if (branch == null) { |
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82 throw new IllegalArgumentException(); |
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83 } |
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84 if (branches == null) { |
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85 branches = new TreeSet<String>(); |
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86 } |
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87 branches.add(branch); |
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88 return this; |
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89 } |
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90 |
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91 /** |
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92 * PLACEHOLDER, NOT IMPLEMENTED YET. |
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93 * |
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94 * Whether to include sub-repositories when collecting changes, default is <code>true</code> XXX or false? |
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95 * @return <code>this</code> for convenience |
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96 */ |
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97 public HgIncomingCommand subrepo(boolean include) { |
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98 includeSubrepo = include; |
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99 throw Internals.notImplemented(); |
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100 } |
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101 |
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102 /** |
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103 * Lightweight check for incoming changes, gives only list of revisions to pull. |
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104 * Reported changes are from any branch (limits set by {@link #branch(String)} are not taken into account. |
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105 * |
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106 * @return list of nodes present at remote and missing locally |
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107 * @throws HgRemoteConnectionException when failed to communicate with remote repository |
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108 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state |
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109 * @throws CancelledException if execution of the command was cancelled |
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110 */ |
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111 public List<Nodeid> executeLite() throws HgException, CancelledException { |
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112 try { |
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113 LinkedHashSet<Nodeid> result = new LinkedHashSet<Nodeid>(); |
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114 RepositoryComparator repoCompare = getComparator(); |
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115 for (BranchChain bc : getMissingBranches()) { |
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116 List<Nodeid> missing = repoCompare.visitBranches(bc); |
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117 HashSet<Nodeid> common = new HashSet<Nodeid>(); // ordering is irrelevant |
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118 repoCompare.collectKnownRoots(bc, common); |
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119 // missing could only start with common elements. Once non-common, rest is just distinct branch revision trails. |
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120 for (Iterator<Nodeid> it = missing.iterator(); it.hasNext() && common.contains(it.next()); it.remove()) ; |
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121 result.addAll(missing); |
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122 } |
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123 ArrayList<Nodeid> rv = new ArrayList<Nodeid>(result); |
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124 return rv; |
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125 } catch (HgRuntimeException ex) { |
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126 throw new HgLibraryFailureException(ex); |
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127 } |
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128 } |
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129 |
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130 /** |
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131 * Full information about incoming changes |
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132 * |
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133 * @throws HgCallbackTargetException to re-throw exception from the handler |
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134 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state |
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135 * @throws CancelledException if execution of the command was cancelled |
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136 */ |
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137 public void executeFull(final HgChangesetHandler handler) throws HgCallbackTargetException, HgException, CancelledException { |
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138 if (handler == null) { |
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139 throw new IllegalArgumentException("Delegate can't be null"); |
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140 } |
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141 final List<Nodeid> common = getCommon(); |
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142 HgBundle changegroup = remoteRepo.getChanges(common); |
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143 final ProgressSupport ps = getProgressSupport(handler); |
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144 try { |
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145 final ChangesetTransformer transformer = new ChangesetTransformer(localRepo, handler, getParentHelper(), ps, getCancelSupport(handler, true)); |
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146 transformer.limitBranches(branches); |
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147 changegroup.changes(localRepo, new HgChangelog.Inspector() { |
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148 private int localIndex; |
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149 private final HgParentChildMap<HgChangelog> parentHelper; |
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150 |
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151 { |
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152 parentHelper = getParentHelper(); |
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153 // new revisions, if any, would be added after all existing, and would get numbered started with last+1 |
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154 localIndex = localRepo.getChangelog().getRevisionCount(); |
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155 } |
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156 |
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157 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) { |
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158 if (parentHelper.knownNode(nodeid)) { |
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159 if (!common.contains(nodeid)) { |
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160 throw new HgInvalidStateException("Bundle shall not report known nodes other than roots we've supplied"); |
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161 } |
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162 return; |
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163 } |
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164 transformer.next(localIndex++, nodeid, cset); |
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165 } |
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166 }); |
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167 transformer.checkFailure(); |
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168 } catch (HgRuntimeException ex) { |
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169 throw new HgLibraryFailureException(ex); |
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170 } finally { |
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171 ps.done(); |
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172 } |
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173 } |
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174 |
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175 private RepositoryComparator getComparator() throws HgInvalidControlFileException, CancelledException { |
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176 if (remoteRepo == null) { |
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177 throw new IllegalArgumentException("Shall specify remote repository to compare against", null); |
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178 } |
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179 if (comparator == null) { |
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180 comparator = new RepositoryComparator(getParentHelper(), remoteRepo); |
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181 // comparator.compare(context); // XXX meanwhile we use distinct path to calculate common |
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182 } |
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183 return comparator; |
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184 } |
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185 |
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186 private HgParentChildMap<HgChangelog> getParentHelper() throws HgInvalidControlFileException { |
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187 if (parentHelper == null) { |
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188 parentHelper = new HgParentChildMap<HgChangelog>(localRepo.getChangelog()); |
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189 parentHelper.init(); |
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190 } |
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191 return parentHelper; |
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192 } |
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193 |
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194 private List<BranchChain> getMissingBranches() throws HgRemoteConnectionException, HgInvalidControlFileException, CancelledException { |
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195 if (missingBranches == null) { |
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196 missingBranches = getComparator().calculateMissingBranches(); |
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197 } |
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198 return missingBranches; |
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199 } |
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200 |
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201 private List<Nodeid> getCommon() throws HgRemoteConnectionException, HgInvalidControlFileException, CancelledException { |
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202 // return getComparator(context).getCommon(); |
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203 final LinkedHashSet<Nodeid> common = new LinkedHashSet<Nodeid>(); |
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204 // XXX common can be obtained from repoCompare, but at the moment it would almost duplicate work of calculateMissingBranches |
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205 // once I refactor latter, common shall be taken from repoCompare. |
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206 RepositoryComparator repoCompare = getComparator(); |
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207 for (BranchChain bc : getMissingBranches()) { |
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208 repoCompare.collectKnownRoots(bc, common); |
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209 } |
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210 return new LinkedList<Nodeid>(common); |
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211 } |
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212 } |