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annotate src/org/tmatesoft/hg/repo/CommitFacility.java @ 538:dd4f6311af52

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Commit: first working version
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 05 Feb 2013 22:30:21 +0100
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children 9edfd5a223b8
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1 /*
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2 * Copyright (c) 2013 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.repo;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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20
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21 import java.nio.ByteBuffer;
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22 import java.util.HashMap;
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23 import java.util.LinkedHashMap;
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24 import java.util.Map;
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25 import java.util.TreeMap;
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26
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27 import org.tmatesoft.hg.core.HgRepositoryLockException;
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28 import org.tmatesoft.hg.core.Nodeid;
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29 import org.tmatesoft.hg.internal.ByteArrayChannel;
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30 import org.tmatesoft.hg.internal.ChangelogEntryBuilder;
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31 import org.tmatesoft.hg.internal.Experimental;
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32 import org.tmatesoft.hg.internal.ManifestEntryBuilder;
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33 import org.tmatesoft.hg.internal.ManifestRevision;
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34 import org.tmatesoft.hg.internal.RevlogStreamWriter;
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35 import org.tmatesoft.hg.util.Pair;
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36 import org.tmatesoft.hg.util.Path;
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37
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38 /**
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39 * WORK IN PROGRESS
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40 *
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41 * @author Artem Tikhomirov
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42 * @author TMate Software Ltd.
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43 */
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44 @Experimental(reason="Work in progress")
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45 public class CommitFacility {
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46 private final HgRepository repo;
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47 private final int p1Commit, p2Commit;
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48 private Map<Path, Pair<HgDataFile, ByteDataSupplier>> files = new LinkedHashMap<Path, Pair<HgDataFile, ByteDataSupplier>>();
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49
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50
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51 public CommitFacility(HgRepository hgRepo, int parentCommit) {
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52 this(hgRepo, parentCommit, NO_REVISION);
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53 }
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54
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55 public CommitFacility(HgRepository hgRepo, int parent1Commit, int parent2Commit) {
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56 repo = hgRepo;
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57 p1Commit = parent1Commit;
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58 p2Commit = parent2Commit;
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59 if (parent1Commit != NO_REVISION && parent1Commit == parent2Commit) {
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60 throw new IllegalArgumentException("Merging same revision is dubious");
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61 }
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62 }
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63
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64 public boolean isMerge() {
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65 return p1Commit != NO_REVISION && p2Commit != NO_REVISION;
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66 }
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67
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68 public void add(HgDataFile dataFile, ByteDataSupplier content) {
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69 files.put(dataFile.getPath(), new Pair<HgDataFile, ByteDataSupplier>(dataFile, content));
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70 }
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71
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72 public Nodeid commit(String message) throws HgRepositoryLockException {
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73
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74 final HgChangelog clog = repo.getChangelog();
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75 final int clogRevisionIndex = clog.getRevisionCount();
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76 ManifestRevision c1Manifest = new ManifestRevision(null, null);
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77 ManifestRevision c2Manifest = new ManifestRevision(null, null);
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78 if (p1Commit != NO_REVISION) {
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79 repo.getManifest().walk(p1Commit, p1Commit, c1Manifest);
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80 }
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81 if (p2Commit != NO_REVISION) {
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82 repo.getManifest().walk(p2Commit, p2Commit, c2Manifest);
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83 }
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84 // Pair<Integer, Integer> manifestParents = getManifestParents();
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85 Pair<Integer, Integer> manifestParents = new Pair<Integer, Integer>(c1Manifest.revisionIndex(), c2Manifest.revisionIndex());
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86 TreeMap<Path, Nodeid> newManifestRevision = new TreeMap<Path, Nodeid>();
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87 HashMap<Path, Pair<Integer, Integer>> fileParents = new HashMap<Path, Pair<Integer,Integer>>();
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88 for (Path f : c1Manifest.files()) {
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89 HgDataFile df = repo.getFileNode(f);
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90 Nodeid fileKnownRev = c1Manifest.nodeid(f);
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91 int fileRevIndex = df.getRevisionIndex(fileKnownRev);
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92 // FIXME merged files?!
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93 fileParents.put(f, new Pair<Integer, Integer>(fileRevIndex, NO_REVISION));
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94 newManifestRevision.put(f, fileKnownRev);
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95 }
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96 //
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97 // Files
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98 for (Pair<HgDataFile, ByteDataSupplier> e : files.values()) {
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99 HgDataFile df = e.first();
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100 Pair<Integer, Integer> fp = fileParents.get(df.getPath());
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101 if (fp == null) {
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102 // NEW FILE
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103 fp = new Pair<Integer, Integer>(NO_REVISION, NO_REVISION);
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104 }
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105 ByteDataSupplier bds = e.second();
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106 // FIXME quickfix, instead, pass ByteDataSupplier directly to RevlogStreamWriter
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107 ByteBuffer bb = ByteBuffer.allocate(2048);
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108 ByteArrayChannel bac = new ByteArrayChannel();
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109 while (bds.read(bb) != -1) {
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110 bb.flip();
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111 bac.write(bb);
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112 bb.clear();
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113 }
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114 RevlogStreamWriter fileWriter = new RevlogStreamWriter(repo.getSessionContext(), df.content);
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115 Nodeid fileRev = fileWriter.addRevision(bac.toArray(), clogRevisionIndex, fp.first(), fp.second());
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116 newManifestRevision.put(df.getPath(), fileRev);
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117 }
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118 //
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119 // Manifest
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120 final ManifestEntryBuilder manifestBuilder = new ManifestEntryBuilder();
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121 for (Map.Entry<Path, Nodeid> me : newManifestRevision.entrySet()) {
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122 manifestBuilder.add(me.getKey().toString(), me.getValue());
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123 }
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124 RevlogStreamWriter manifestWriter = new RevlogStreamWriter(repo.getSessionContext(), repo.getManifest().content);
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125 Nodeid manifestRev = manifestWriter.addRevision(manifestBuilder.build(), clogRevisionIndex, manifestParents.first(), manifestParents.second());
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126 //
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127 // Changelog
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128 final ChangelogEntryBuilder changelogBuilder = new ChangelogEntryBuilder();
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129 changelogBuilder.setModified(files.keySet());
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130 byte[] clogContent = changelogBuilder.build(manifestRev, message);
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131 RevlogStreamWriter changelogWriter = new RevlogStreamWriter(repo.getSessionContext(), clog.content);
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132 Nodeid changesetRev = changelogWriter.addRevision(clogContent, clogRevisionIndex, p1Commit, p2Commit);
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133 return changesetRev;
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134 }
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135 /*
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136 private Pair<Integer, Integer> getManifestParents() {
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137 return new Pair<Integer, Integer>(extractManifestRevisionIndex(p1Commit), extractManifestRevisionIndex(p2Commit));
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138 }
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139
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140 private int extractManifestRevisionIndex(int clogRevIndex) {
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141 if (clogRevIndex == NO_REVISION) {
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142 return NO_REVISION;
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143 }
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144 RawChangeset commitObject = repo.getChangelog().range(clogRevIndex, clogRevIndex).get(0);
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145 Nodeid manifestRev = commitObject.manifest();
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146 if (manifestRev.isNull()) {
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147 return NO_REVISION;
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148 }
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149 return repo.getManifest().getRevisionIndex(manifestRev);
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150 }
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151 */
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152
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153 // unlike DataAccess (which provides structured access), this one
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154 // deals with a sequence of bytes, when there's no need in structure of the data
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155 public interface ByteDataSupplier { // TODO look if can resolve DataAccess in HgCloneCommand visibility issue
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156 int read(ByteBuffer buf);
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157 }
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158
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159 public interface ByteDataConsumer {
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160 void write(ByteBuffer buf);
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161 }
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162 }