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annotate src/org/tmatesoft/hg/core/HgOutgoingCommand.java @ 256:b61ed0f2c4da

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Yet another slight perf/mem improvement for the tags per file sample
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 16 Aug 2011 15:45:47 +0200
parents 41a778e3fd31
children 6d1804fe0ed7
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.core;
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19 import java.util.List;
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20 import java.util.Set;
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21 import java.util.TreeSet;
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22
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23 import org.tmatesoft.hg.internal.RepositoryComparator;
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24 import org.tmatesoft.hg.repo.HgChangelog;
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25 import org.tmatesoft.hg.repo.HgRemoteRepository;
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26 import org.tmatesoft.hg.repo.HgRepository;
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27 import org.tmatesoft.hg.util.CancelSupport;
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28 import org.tmatesoft.hg.util.CancelledException;
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29 import org.tmatesoft.hg.util.ProgressSupport;
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31 /**
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32 * Command to find out changes made in a local repository and missing at remote repository.
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33 *
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34 * @author Artem Tikhomirov
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35 * @author TMate Software Ltd.
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36 */
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37 public class HgOutgoingCommand extends HgAbstractCommand<HgOutgoingCommand> {
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38
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39 private final HgRepository localRepo;
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40 private HgRemoteRepository remoteRepo;
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41 @SuppressWarnings("unused")
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42 private boolean includeSubrepo;
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43 private RepositoryComparator comparator;
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44 private HgChangelog.ParentWalker parentHelper;
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45 private Set<String> branches;
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47 public HgOutgoingCommand(HgRepository hgRepo) {
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48 localRepo = hgRepo;
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49 }
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51 /**
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52 * @param hgRemote remoteRepository to compare against
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53 * @return <code>this</code> for convenience
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54 */
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55 public HgOutgoingCommand against(HgRemoteRepository hgRemote) {
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56 remoteRepo = hgRemote;
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57 comparator = null;
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58 return this;
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59 }
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60
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61 /**
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62 * Select specific branch to pull.
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63 * Multiple branch specification possible (changeset from any of these would be included in result).
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64 * Note, {@link #executeLite(Object)} does not respect this setting.
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65 *
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66 * @param branch - branch name, case-sensitive, non-null.
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67 * @return <code>this</code> for convenience
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68 * @throws IllegalArgumentException when branch argument is null
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69 */
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70 public HgOutgoingCommand branch(String branch) {
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71 if (branch == null) {
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72 throw new IllegalArgumentException();
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73 }
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74 if (branches == null) {
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75 branches = new TreeSet<String>();
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76 }
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77 branches.add(branch);
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78 return this;
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79 }
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81 /**
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82 * PLACEHOLDER, NOT IMPLEMENTED YET.
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83 *
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84 * @return <code>this</code> for convenience
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85 */
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86 public HgOutgoingCommand subrepo(boolean include) {
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87 includeSubrepo = include;
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88 throw HgRepository.notImplemented();
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89 }
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90
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91 /**
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92 * Lightweight check for outgoing changes.
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93 * Reported changes are from any branch (limits set by {@link #branch(String)} are not taken into account.
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94 *
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95 * @return list on local nodes known to be missing at remote server
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96 */
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97 public List<Nodeid> executeLite() throws HgRemoteConnectionException, CancelledException {
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98 final ProgressSupport ps = getProgressSupport(null);
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99 try {
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100 ps.start(10);
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101 return getComparator(new ProgressSupport.Sub(ps, 5), getCancelSupport(null)).getLocalOnlyRevisions();
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102 } finally {
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103 ps.done();
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104 }
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105 }
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106
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107 /**
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108 * Complete information about outgoing changes
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109 *
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110 * @param handler delegate to process changes
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111 */
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112 public void executeFull(final HgChangesetHandler handler) throws HgRemoteConnectionException, HgCallbackTargetException, CancelledException {
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113 if (handler == null) {
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114 throw new IllegalArgumentException("Delegate can't be null");
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115 }
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116 final ProgressSupport ps = getProgressSupport(handler);
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117 final CancelSupport cs = getCancelSupport(handler);
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118 try {
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119 ps.start(-1);
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120 ChangesetTransformer inspector = new ChangesetTransformer(localRepo, handler, getParentHelper(), ps, cs);
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121 inspector.limitBranches(branches);
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122 getComparator(new ProgressSupport.Sub(ps, 1), cs).visitLocalOnlyRevisions(inspector);
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123 inspector.checkFailure();
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124 } finally {
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125 ps.done();
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126 }
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127 }
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128
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129 private RepositoryComparator getComparator(ProgressSupport ps, CancelSupport cs) throws HgRemoteConnectionException, CancelledException {
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130 if (remoteRepo == null) {
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131 throw new IllegalArgumentException("Shall specify remote repository to compare against");
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132 }
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133 if (comparator == null) {
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134 comparator = new RepositoryComparator(getParentHelper(), remoteRepo);
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135 comparator.compare(ps, cs);
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136 }
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137 return comparator;
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138 }
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139
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140 private HgChangelog.ParentWalker getParentHelper() {
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141 if (parentHelper == null) {
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142 parentHelper = localRepo.getChangelog().new ParentWalker();
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143 parentHelper.init();
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144 }
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145 return parentHelper;
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146 }
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147
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148 }