Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgOutgoingCommand.java @ 425:48f993aa2f41

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FIXMEs: exceptions, javadoc
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 28 Mar 2012 18:39:29 +0200
parents 9c9c442b5f2e
children 31a89587eb04
rev   line source
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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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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.HgInvalidControlFileException;
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26 import org.tmatesoft.hg.repo.HgRemoteRepository;
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27 import org.tmatesoft.hg.repo.HgRepository;
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28 import org.tmatesoft.hg.util.CancelSupport;
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29 import org.tmatesoft.hg.util.CancelledException;
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30 import org.tmatesoft.hg.util.ProgressSupport;
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32 /**
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33 * Command to find out changes made in a local repository and missing at remote repository.
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34 *
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35 * @author Artem Tikhomirov
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36 * @author TMate Software Ltd.
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37 */
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38 public class HgOutgoingCommand extends HgAbstractCommand<HgOutgoingCommand> {
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39
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40 private final HgRepository localRepo;
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41 private HgRemoteRepository remoteRepo;
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42 @SuppressWarnings("unused")
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43 private boolean includeSubrepo;
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44 private RepositoryComparator comparator;
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45 private HgChangelog.ParentWalker parentHelper;
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46 private Set<String> branches;
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48 public HgOutgoingCommand(HgRepository hgRepo) {
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49 localRepo = hgRepo;
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50 }
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52 /**
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53 * @param hgRemote remoteRepository to compare against
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54 * @return <code>this</code> for convenience
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55 */
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56 public HgOutgoingCommand against(HgRemoteRepository hgRemote) {
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57 remoteRepo = hgRemote;
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58 comparator = null;
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59 return this;
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60 }
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61
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62 /**
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63 * Select specific branch to pull.
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64 * Multiple branch specification possible (changeset from any of these would be included in result).
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65 * Note, {@link #executeLite()} does not respect this setting.
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66 *
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67 * @param branch - branch name, case-sensitive, non-null.
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68 * @return <code>this</code> for convenience
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69 * @throws IllegalArgumentException when branch argument is null
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70 */
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71 public HgOutgoingCommand branch(String branch) {
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72 if (branch == null) {
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73 throw new IllegalArgumentException();
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74 }
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75 if (branches == null) {
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76 branches = new TreeSet<String>();
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77 }
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78 branches.add(branch);
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79 return this;
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80 }
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82 /**
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83 * PLACEHOLDER, NOT IMPLEMENTED YET.
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84 *
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85 * @return <code>this</code> for convenience
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86 */
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87 public HgOutgoingCommand subrepo(boolean include) {
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88 includeSubrepo = include;
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89 throw HgRepository.notImplemented();
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90 }
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91
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92 /**
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93 * Lightweight check for outgoing changes.
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94 * Reported changes are from any branch (limits set by {@link #branch(String)} are not taken into account.
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95 *
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96 * @return list on local nodes known to be missing at remote server
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97 * @throws HgRemoteConnectionException when failed to communicate with remote repository
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98 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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99 * @throws CancelledException if execution of the command was cancelled
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100 */
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101 public List<Nodeid> executeLite() throws HgRemoteConnectionException, HgInvalidControlFileException, CancelledException {
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102 final ProgressSupport ps = getProgressSupport(null);
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103 try {
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104 ps.start(10);
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105 return getComparator(new ProgressSupport.Sub(ps, 5), getCancelSupport(null, true)).getLocalOnlyRevisions();
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106 } finally {
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107 ps.done();
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108 }
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109 }
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111 /**
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112 * Complete information about outgoing changes
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113 *
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114 * @param handler delegate to process changes
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115 * @throws HgRemoteConnectionException when failed to communicate with remote repository
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116 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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117 * @throws HgCallbackTargetException to re-throw exception from the handler
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118 * @throws CancelledException if execution of the command was cancelled
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119 */
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120 public void executeFull(final HgChangesetHandler handler) throws HgRemoteConnectionException, HgInvalidControlFileException, HgCallbackTargetException, CancelledException {
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121 if (handler == null) {
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122 throw new IllegalArgumentException("Delegate can't be null");
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123 }
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124 final ProgressSupport ps = getProgressSupport(handler);
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125 final CancelSupport cs = getCancelSupport(handler, true);
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126 try {
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127 ps.start(-1);
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128 ChangesetTransformer inspector = new ChangesetTransformer(localRepo, handler, getParentHelper(), ps, cs);
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129 inspector.limitBranches(branches);
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130 getComparator(new ProgressSupport.Sub(ps, 1), cs).visitLocalOnlyRevisions(inspector);
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131 inspector.checkFailure();
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132 } finally {
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133 ps.done();
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134 }
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135 }
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136
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137 private RepositoryComparator getComparator(ProgressSupport ps, CancelSupport cs) throws HgRemoteConnectionException, HgInvalidControlFileException, CancelledException {
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138 if (remoteRepo == null) {
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139 throw new IllegalArgumentException("Shall specify remote repository to compare against");
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140 }
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141 if (comparator == null) {
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142 comparator = new RepositoryComparator(getParentHelper(), remoteRepo);
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143 comparator.compare(ps, cs);
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144 }
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145 return comparator;
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146 }
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147
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148 private HgChangelog.ParentWalker getParentHelper() throws HgInvalidControlFileException {
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149 if (parentHelper == null) {
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150 parentHelper = localRepo.getChangelog().new ParentWalker();
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151 parentHelper.init();
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152 }
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153 return parentHelper;
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154 }
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155
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156 }