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annotate src/org/tmatesoft/hg/core/HgOutgoingCommand.java @ 338:3cfa4d908fc9

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Add options to control DataAccessProvider, allow to turn off use of file memory mapping in particular to solve potential sharing violation (os file handle gets released on MappedByteByffer being GC'd, not on FileChannel.close())
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 15 Nov 2011 04:47:03 +0100
parents d68dcb3b5f49
children 5f9073eabf06
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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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, true)).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, true);
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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 }