Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgChangeset.java @ 157:d5268ca7715b

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Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 09 Mar 2011 05:22:17 +0100
parents ba2bf656f00f
children c9b305df0b89
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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a3a2e5deb320 Updated contact address to support@hg4j.com
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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.ArrayList;
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20 import java.util.Collections;
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21 import java.util.List;
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22
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23 import org.tmatesoft.hg.core.HgLogCommand.FileRevision;
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24 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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25 import org.tmatesoft.hg.repo.HgRepository;
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26 import org.tmatesoft.hg.repo.HgStatusCollector;
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27 import org.tmatesoft.hg.util.Path;
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30 /**
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31 * Record in the Mercurial changelog, describing single commit.
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32 *
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33 * Not thread-safe, don't try to read from different threads
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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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645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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38 public class HgChangeset implements Cloneable {
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39 private final HgStatusCollector statusHelper;
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40 private final Path.Source pathHelper;
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42 //
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43 private RawChangeset changeset;
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44 private Nodeid nodeid;
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46 //
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47 private List<FileRevision> modifiedFiles, addedFiles;
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48 private List<Path> deletedFiles;
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49 private int revNumber;
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51 // XXX consider CommandContext with StatusCollector, PathPool etc. Commands optionally get CC through a cons or create new
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52 // and pass it around
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53 /*package-local*/HgChangeset(HgStatusCollector statusCollector, Path.Source pathFactory) {
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54 statusHelper = statusCollector;
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55 pathHelper = pathFactory;
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56 }
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58 /*package-local*/
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59 void init(int localRevNumber, Nodeid nid, RawChangeset rawChangeset) {
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60 revNumber = localRevNumber;
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61 nodeid = nid;
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62 changeset = rawChangeset;
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63 modifiedFiles = addedFiles = null;
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64 deletedFiles = null;
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65 }
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66 public int getRevision() {
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67 return revNumber;
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68 }
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69 public Nodeid getNodeid() {
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70 return nodeid;
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71 }
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72 public String getUser() {
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73 return changeset.user();
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74 }
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75 public String getComment() {
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76 return changeset.comment();
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77 }
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78 public String getBranch() {
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79 return changeset.branch();
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80 }
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81 public String getDate() {
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82 return changeset.dateString();
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83 }
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84 public Nodeid getManifestRevision() {
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85 return changeset.manifest();
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86 }
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88 public List<Path> getAffectedFiles() {
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89 // reports files as recorded in changelog. Note, merge revisions may have no
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90 // files listed, and thus this method would return empty list, while
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91 // #getModifiedFiles() would return list with merged file(s) (because it uses status to get 'em, not
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92 // what #files() gives).
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93 ArrayList<Path> rv = new ArrayList<Path>(changeset.files().size());
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94 for (String name : changeset.files()) {
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95 rv.add(pathHelper.path(name));
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96 }
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97 return rv;
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98 }
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99
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100 public List<FileRevision> getModifiedFiles() {
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101 if (modifiedFiles == null) {
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102 initFileChanges();
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103 }
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104 return modifiedFiles;
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105 }
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106
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107 public List<FileRevision> getAddedFiles() {
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108 if (addedFiles == null) {
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109 initFileChanges();
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110 }
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111 return addedFiles;
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112 }
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114 public List<Path> getRemovedFiles() {
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115 if (deletedFiles == null) {
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116 initFileChanges();
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117 }
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118 return deletedFiles;
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119 }
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120
125
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121 public boolean isMerge() {
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122 return !Nodeid.NULL.equals(getSecondParentRevision());
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123 }
124
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124
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125 public Nodeid getFirstParentRevision() {
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126 // XXX may read once for both p1 and p2
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127 // or use ParentWalker to minimize reads even more.
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128 byte[] p1 = new byte[20];
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129 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], p1, null);
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130 return Nodeid.fromBinary(p1, 0);
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131 }
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132
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133 public Nodeid getSecondParentRevision() {
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134 byte[] p2 = new byte[20];
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135 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], null, p2);
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136 return Nodeid.fromBinary(p2, 0);
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137 }
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138
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139 @Override
129
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140 public HgChangeset clone() {
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141 try {
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142 HgChangeset copy = (HgChangeset) super.clone();
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143 copy.changeset = changeset.clone();
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144 return copy;
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145 } catch (CloneNotSupportedException ex) {
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146 throw new InternalError(ex.toString());
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147 }
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148 }
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149
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150 private /*synchronized*/ void initFileChanges() {
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151 ArrayList<Path> deleted = new ArrayList<Path>();
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152 ArrayList<FileRevision> modified = new ArrayList<FileRevision>();
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153 ArrayList<FileRevision> added = new ArrayList<FileRevision>();
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154 HgStatusCollector.Record r = new HgStatusCollector.Record();
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155 statusHelper.change(revNumber, r);
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156 final HgRepository repo = statusHelper.getRepo();
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157 for (Path s : r.getModified()) {
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158 Nodeid nid = r.nodeidAfterChange(s);
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159 if (nid == null) {
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160 throw new HgBadStateException();
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161 }
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162 modified.add(new FileRevision(repo, nid, s));
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163 }
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164 for (Path s : r.getAdded()) {
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165 Nodeid nid = r.nodeidAfterChange(s);
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166 if (nid == null) {
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167 throw new HgBadStateException();
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168 }
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169 added.add(new FileRevision(repo, nid, s));
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170 }
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171 for (Path s : r.getRemoved()) {
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172 // with Path from getRemoved, may just copy
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173 deleted.add(s);
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174 }
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175 modified.trimToSize();
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176 added.trimToSize();
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177 deleted.trimToSize();
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178 modifiedFiles = Collections.unmodifiableList(modified);
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179 addedFiles = Collections.unmodifiableList(added);
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180 deletedFiles = Collections.unmodifiableList(deleted);
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181 }
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182 }