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annotate src/org/tmatesoft/hg/repo/StatusCollector.java @ 88:61eedab3eb3e

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Status between two revisions to recognize copy/rename
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 26 Jan 2011 05:46:47 +0100
parents 6f1b88693d48
children 42bcb4bffd17
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@svnkit.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.BAD_REVISION;
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20 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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21
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22 import java.util.Collection;
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23 import java.util.Collections;
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24 import java.util.HashMap;
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25 import java.util.LinkedHashMap;
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26 import java.util.LinkedList;
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27 import java.util.List;
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28 import java.util.Map;
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29 import java.util.TreeSet;
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30
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31 import org.tmatesoft.hg.core.Nodeid;
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32 import org.tmatesoft.hg.core.Path;
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33
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34
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35 /**
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36 * RevisionWalker?
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37 *
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38 * @author Artem Tikhomirov
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39 * @author TMate Software Ltd.
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40 */
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41 public class StatusCollector {
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42
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43 private final HgRepository repo;
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44 private final Map<Integer, ManifestRevisionInspector> cache; // sparse array, in fact
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46 public StatusCollector(HgRepository hgRepo) {
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47 this.repo = hgRepo;
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48 cache = new HashMap<Integer, ManifestRevisionInspector>();
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49 ManifestRevisionInspector emptyFakeState = new ManifestRevisionInspector(-1, -1);
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50 emptyFakeState.begin(-1, null);
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51 emptyFakeState.end(-1); // FIXME HgRepo.TIP == -1 as well, need to distinguish fake "prior to first" revision from "the very last"
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52 cache.put(-1, emptyFakeState);
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53 }
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55 public HgRepository getRepo() {
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56 return repo;
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57 }
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58
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59 private ManifestRevisionInspector get(int rev) {
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60 ManifestRevisionInspector i = cache.get(rev);
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61 if (i == null) {
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62 i = new ManifestRevisionInspector(rev, rev);
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63 cache.put(rev, i);
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64 repo.getManifest().walk(rev, rev, i);
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65 }
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66 return i;
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67 }
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69 /*package-local*/ ManifestRevisionInspector raw(int rev) {
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70 return get(rev);
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71 }
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72
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73 // hg status --change <rev>
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74 public void change(int rev, Inspector inspector) {
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75 int[] parents = new int[2];
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76 repo.getChangelog().parents(rev, parents, null, null);
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77 walk(parents[0], rev, inspector);
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78 }
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79
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80 // I assume revision numbers are the same for changelog and manifest - here
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81 // user would like to pass changelog revision numbers, and I use them directly to walk manifest.
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82 // if this assumption is wrong, fix this (lookup manifest revisions from changeset).
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83 public void walk(int rev1, int rev2, Inspector inspector) {
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84 if (rev1 == rev2) {
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85 throw new IllegalArgumentException();
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86 }
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87 if (inspector == null) {
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88 throw new IllegalArgumentException();
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89 }
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90 if (inspector instanceof Record) {
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91 ((Record) inspector).init(rev1, rev2, this);
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92 }
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93 if (rev1 == TIP) {
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94 rev1 = repo.getManifest().getRevisionCount() - 1;
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95 }
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96 if (rev2 == TIP) {
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97 rev2 = repo.getManifest().getRevisionCount() - 1; // XXX add Revlog.tip() func ?
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98 }
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99 // in fact, rev1 and rev2 are often next (or close) to each other,
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100 // thus, we can optimize Manifest reads here (manifest.walk(rev1, rev2))
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101 ManifestRevisionInspector r1, r2;
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102 if (!cache.containsKey(rev1) && !cache.containsKey(rev2) && Math.abs(rev1 - rev2) < 5 /*subjective equivalent of 'close enough'*/) {
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103 int minRev = rev1 < rev2 ? rev1 : rev2;
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104 int maxRev = minRev == rev1 ? rev2 : rev1;
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105 r1 = r2 = new ManifestRevisionInspector(minRev, maxRev);
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106 for (int i = minRev; i <= maxRev; i++) {
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107 cache.put(i, r1);
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108 }
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109 repo.getManifest().walk(minRev, maxRev, r1);
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110 } else {
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111 r1 = get(rev1);
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112 r2 = get(rev2);
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113 }
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114
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115 TreeSet<String> r1Files = new TreeSet<String>(r1.files(rev1));
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116 for (String fname : r2.files(rev2)) {
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117 if (r1Files.remove(fname)) {
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118 Nodeid nidR1 = r1.nodeid(rev1, fname);
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119 Nodeid nidR2 = r2.nodeid(rev2, fname);
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120 String flagsR1 = r1.flags(rev1, fname);
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121 String flagsR2 = r2.flags(rev2, fname);
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122 if (nidR1.equals(nidR2) && ((flagsR2 == null && flagsR1 == null) || flagsR2.equals(flagsR1))) {
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123 inspector.clean(fname);
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124 } else {
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125 inspector.modified(fname);
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126 }
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127 } else {
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128 HgDataFile df = repo.getFileNode(fname);
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129 boolean isCopy = false;
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130 while (df.isCopy()) {
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131 Path original = df.getCopySourceName();
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132 if (r1Files.contains(original.toString())) {
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133 df = repo.getFileNode(original);
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134 int changelogRevision = df.getChangesetLocalRevision(0);
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135 if (changelogRevision <= rev1) {
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136 // copy/rename source was known prior to rev1
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137 // (both r1Files.contains is true and original was created earlier than rev1)
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138 // without r1Files.contains changelogRevision <= rev1 won't suffice as the file
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139 // might get removed somewhere in between (changelogRevision < R < rev1)
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140 inspector.copied(original.toString(), fname);
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141 isCopy = true;
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142 }
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143 break;
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144 }
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145 df = repo.getFileNode(original); // try more steps away
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146 }
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147 if (!isCopy) {
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148 inspector.added(fname);
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149 }
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150 }
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151 }
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152 for (String left : r1Files) {
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153 inspector.removed(left);
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154 }
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155 // inspector.done() if useful e.g. in UI client
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156 }
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157
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158 public Record status(int rev1, int rev2) {
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159 Record rv = new Record();
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160 walk(rev1, rev2, rv);
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161 return rv;
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162 }
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163
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164 public interface Inspector {
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165 void modified(String fname);
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166 void added(String fname);
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167 // XXX need to specify whether StatusCollector invokes added() along with copied or not!
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168 void copied(String fnameOrigin, String fnameAdded); // if copied files of no interest, should delegate to self.added(fnameAdded);
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169 void removed(String fname);
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170 void clean(String fname);
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171 void missing(String fname); // aka deleted (tracked by Hg, but not available in FS any more
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172 void unknown(String fname); // not tracked
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173 void ignored(String fname);
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174 }
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175
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176 // XXX for r1..r2 status, only modified, added, removed (and perhaps, clean) make sense
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177 // XXX Need to specify whether copy targets are in added or not (@see Inspector#copied above)
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178 public static class Record implements Inspector {
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179 private List<String> modified, added, removed, clean, missing, unknown, ignored;
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180 private Map<String, String> copied;
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181
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182 private int startRev, endRev;
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183 private StatusCollector statusHelper;
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184
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185 // XXX StatusCollector may additionally initialize Record instance to speed lookup of changed file revisions
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186 // here I need access to ManifestRevisionInspector via #raw(). Perhaps, non-static class (to get
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187 // implicit reference to StatusCollector) may be better?
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188 // Since users may want to reuse Record instance we've once created (and initialized), we need to
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189 // ensure functionality is correct for each/any call (#walk checks instanceof Record and fixes it up)
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190 // Perhaps, distinct helper (sc.getRevisionHelper().nodeid(fname)) would be better, just not clear
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191 // how to supply [start..end] values there easily
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192 /*package-local*/void init(int startRevision, int endRevision, StatusCollector self) {
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193 startRev = startRevision;
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194 endRev = endRevision;
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195 statusHelper = self;
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196 }
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197
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198 public Nodeid nodeidBeforeChange(String fname) {
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199 if (statusHelper == null || startRev == BAD_REVISION) {
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200 return null;
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201 }
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202 if ((modified == null || !modified.contains(fname)) && (removed == null || !removed.contains(fname))) {
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203 return null;
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204 }
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205 return statusHelper.raw(startRev).nodeid(startRev, fname);
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206 }
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207 public Nodeid nodeidAfterChange(String fname) {
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208 if (statusHelper == null || endRev == BAD_REVISION) {
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209 return null;
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210 }
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211 if ((modified == null || !modified.contains(fname)) && (added == null || !added.contains(fname))) {
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212 return null;
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213 }
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214 return statusHelper.raw(endRev).nodeid(endRev, fname);
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215 }
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216
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217 public List<String> getModified() {
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218 return proper(modified);
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219 }
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220
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221 public List<String> getAdded() {
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222 return proper(added);
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223 }
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224
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225 public List<String> getRemoved() {
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226 return proper(removed);
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227 }
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228
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229 public Map<String,String> getCopied() {
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230 if (copied == null) {
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231 return Collections.emptyMap();
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232 }
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233 return Collections.unmodifiableMap(copied);
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234 }
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235
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236 public List<String> getClean() {
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237 return proper(clean);
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238 }
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239
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240 public List<String> getMissing() {
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241 return proper(missing);
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242 }
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243
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244 public List<String> getUnknown() {
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245 return proper(unknown);
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246 }
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247
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248 public List<String> getIgnored() {
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249 return proper(ignored);
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250 }
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251
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252 private List<String> proper(List<String> l) {
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253 if (l == null) {
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254 return Collections.emptyList();
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255 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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256 return Collections.unmodifiableList(l);
05829a70b30b Status operation extracted into separate, cache-friendly class
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257 }
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258
05829a70b30b Status operation extracted into separate, cache-friendly class
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259 //
05829a70b30b Status operation extracted into separate, cache-friendly class
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260 //
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261
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262 public void modified(String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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263 modified = doAdd(modified, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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264 }
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265
05829a70b30b Status operation extracted into separate, cache-friendly class
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266 public void added(String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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267 added = doAdd(added, fname);
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268 }
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269
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270 public void copied(String fnameOrigin, String fnameAdded) {
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271 if (copied == null) {
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272 copied = new LinkedHashMap<String, String>();
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273 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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274 added(fnameAdded);
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275 copied.put(fnameAdded, fnameOrigin);
55
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276 }
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277
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278 public void removed(String fname) {
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279 removed = doAdd(removed, fname);
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280 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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281
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282 public void clean(String fname) {
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283 clean = doAdd(clean, fname);
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284 }
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285
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286 public void missing(String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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287 missing = doAdd(missing, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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288 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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289
05829a70b30b Status operation extracted into separate, cache-friendly class
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290 public void unknown(String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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291 unknown = doAdd(unknown, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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292 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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293
05829a70b30b Status operation extracted into separate, cache-friendly class
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294 public void ignored(String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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295 ignored = doAdd(ignored, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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296 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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297
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298 private static List<String> doAdd(List<String> l, String s) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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299 if (l == null) {
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300 l = new LinkedList<String>();
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301 }
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302 l.add(s);
05829a70b30b Status operation extracted into separate, cache-friendly class
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303 return l;
05829a70b30b Status operation extracted into separate, cache-friendly class
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304 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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305 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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306
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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diff changeset
307 // XXX in fact, indexed access brings more trouble than benefits, get rid of it? Distinct instance per revision is good enough
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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308 public /*XXX private, actually. Made public unless repo.statusLocal finds better place*/ static final class ManifestRevisionInspector implements HgManifest.Inspector {
05829a70b30b Status operation extracted into separate, cache-friendly class
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309 private final HashMap<String, Nodeid>[] idsMap;
05829a70b30b Status operation extracted into separate, cache-friendly class
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310 private final HashMap<String, String>[] flagsMap;
05829a70b30b Status operation extracted into separate, cache-friendly class
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311 private final int baseRevision;
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312 private int r = -1; // cursor
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313
05829a70b30b Status operation extracted into separate, cache-friendly class
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314 /**
05829a70b30b Status operation extracted into separate, cache-friendly class
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315 * [minRev, maxRev]
56
576d6e8a09f6 Analog of 'hg status --change' command
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diff changeset
316 * [-1,-1] also accepted (for fake empty instance)
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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317 * @param minRev - inclusive
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318 * @param maxRev - inclusive
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319 */
05829a70b30b Status operation extracted into separate, cache-friendly class
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320 @SuppressWarnings("unchecked")
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diff changeset
321 public ManifestRevisionInspector(int minRev, int maxRev) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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322 baseRevision = minRev;
05829a70b30b Status operation extracted into separate, cache-friendly class
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323 int range = maxRev - minRev + 1;
05829a70b30b Status operation extracted into separate, cache-friendly class
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324 idsMap = new HashMap[range];
05829a70b30b Status operation extracted into separate, cache-friendly class
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325 flagsMap = new HashMap[range];
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
326 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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327
05829a70b30b Status operation extracted into separate, cache-friendly class
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328 public Collection<String> files(int rev) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
329 if (rev < baseRevision || rev >= baseRevision + idsMap.length) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
330 throw new IllegalArgumentException();
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
331 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
332 return idsMap[rev - baseRevision].keySet();
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
333 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
334
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
335 public Nodeid nodeid(int rev, String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
336 if (rev < baseRevision || rev >= baseRevision + idsMap.length) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
337 throw new IllegalArgumentException();
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
338 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
339 return idsMap[rev - baseRevision].get(fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
340 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
341
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
342 public String flags(int rev, String fname) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
343 if (rev < baseRevision || rev >= baseRevision + idsMap.length) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
344 throw new IllegalArgumentException();
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
345 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
346 return flagsMap[rev - baseRevision].get(fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
347 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
348
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
349 //
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
350
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
351 public boolean next(Nodeid nid, String fname, String flags) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
352 idsMap[r].put(fname, nid);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
353 flagsMap[r].put(fname, flags);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
354 return true;
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
355 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
356
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
357 public boolean end(int revision) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
358 assert revision == r + baseRevision;
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
359 r = -1;
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
360 return revision+1 < baseRevision + idsMap.length;
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
361 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
362
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
363 public boolean begin(int revision, Nodeid nid) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
364 if (revision < baseRevision || revision >= baseRevision + idsMap.length) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
365 throw new IllegalArgumentException();
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
366 }
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
367 r = revision - baseRevision;
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
368 idsMap[r] = new HashMap<String, Nodeid>();
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
369 flagsMap[r] = new HashMap<String, String>();
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
370 return true;
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
371 }
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
372 }
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
373
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
374 }