Mercurial > hg > Members > nobuyasu > jungle-network

annotate src/main/java/app/bbs/NetworkJungleBulletinBoard.java @ 123:495ac60d7f5f

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Modified JungleUpdater
author one
date Fri, 27 Dec 2013 20:13:37 +0900
parents cef245f71053
children dacfa7eba841
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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diff changeset
1 package app.bbs;
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2
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3 import java.io.File;
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4 import java.io.FileNotFoundException;
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5 import java.io.IOException;
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6 import java.nio.ByteBuffer;
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7 import java.util.Date;
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8 import java.util.concurrent.atomic.AtomicInteger;
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9
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10 import alice.jungle.core.NetworkDefaultJungle;
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11 import alice.jungle.persistent.PersistentJournal;
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12 import alice.jungle.transaction.JungleUpdater;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Children;
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17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
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18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeList;
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19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListReader;
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20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultNodePath;
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21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
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22 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer.EditableNode;
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23 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer.NodeEditor;
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24 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
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25 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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26 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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27 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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28 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.IterableConverter;
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29
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30 public class NetworkJungleBulletinBoard implements BulletinBoard
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31 {
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32 private final Jungle jungle;
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33 private final PersistentJournal journal;
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34 private final String LOG_DIR = "./log";
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35
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36 public NetworkJungleBulletinBoard(String _uuid) throws FileNotFoundException
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37 {
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38 journal = new PersistentJournal();
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39 jungle = new NetworkDefaultJungle(journal, _uuid,new DefaultTreeEditor(new DefaultTraverser()));
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40 BullentInBoardJungleManager.setJungle(jungle);
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41 }
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42
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43 public void init() throws IOException {
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44 checkAndCreateLogDirectory();
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45 commitLogRecover();
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46 }
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47
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48 public void checkAndCreateLogDirectory() {
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49 File logFile = new File(LOG_DIR);
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50 if(!logFile.exists()) {
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51 logFile.mkdir();
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52 return;
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53 }
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54 if (logFile.isFile()) {
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55 logFile.delete();
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56 logFile.mkdir();
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57 }
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58 }
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59
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60 public void commitLogRecover() throws IOException {
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61 File[] logFiles = new File(LOG_DIR).listFiles();
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62 for(File logFile : logFiles) {
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63 commitLogRecover(logFile);
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64 logFile.delete();
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65 }
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66 if(jungle.getTreeByName("boards") == null) {
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67 jungle.createNewTree("boards");
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68 }
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69 }
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71 private void commitLogRecover(File logFile) throws IOException {
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72 journal.setInputFile(logFile);
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73 ChangeListReader reader = journal.getReader();
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74 if (reader == null) return;
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75 for (ChangeList chList : reader) {
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76 String treeName = chList.getTreeName();
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77 JungleTree tree = jungle.getTreeByName(treeName);
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78 if(tree == null) {
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79 tree = jungle.createNewTree(treeName);
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80 }
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81 JungleTreeEditor editor = tree.getLocalTreeEditor();
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82 Either<Error, JungleTreeEditor> either = JungleUpdater.edit(editor, chList);
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83 editor = either.b();
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84 if(either.isA()) {
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85 throw new IOException("Failed commit log recovery");
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86 }
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87 editor.success();
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88 }
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89 }
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90
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91 public Iterable<String> getBoards()
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92 {
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93 JungleTree tree = jungle.getTreeByName("boards");
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94 Node node = tree.getRootNode();
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95 Children<Node> chs = node.getChildren();
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96
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97 IterableConverter.Converter<String,Node> converter = new IterableConverter.Converter<String,Node>(){
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98 public String conv(Node _b) {
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99 ByteBuffer e = _b.getAttributes().get("name");
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100 return new String(e.array());
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101 }
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102 };
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103
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104 return new IterableConverter<String,Node>(chs,converter);
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105 }
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106
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107 public void createBoards(final String _name,final String _author,final String _initMessage,final String _editKey)
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108 {
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109 if(null == jungle.createNewTree(_name)){
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110 throw new IllegalStateException();
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111 }
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112
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113 JungleTree tree = jungle.getTreeByName("boards");
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114 JungleTreeEditor editor = tree.getTreeEditor();
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115 DefaultNodePath root = new DefaultNodePath();
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116 Either<Error,JungleTreeEditor> either = editor.addNewChildAt(root,0);
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117 if(either.isA()){
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118 throw new IllegalStateException();
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119 }
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120 editor = either.b();
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121
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122 either = editor.putAttribute(root.add(0),"name",ByteBuffer.wrap(_name.getBytes()));
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123 if(either.isA()){
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124 throw new IllegalStateException();
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125 }
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126 editor = either.b();
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127 Either<Error,JungleTreeEditor> result = editor.success();
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128 if(result.isA()){
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129 throw new IllegalStateException();
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130 }
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131 final long timestamp = new Date().getTime();
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132
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133
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134 tree = jungle.getTreeByName(_name);
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135 editor = tree.getTreeEditor();
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136 either = editor.addNewChildAt(root,0);
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137 if(either.isA()){
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138 throw new IllegalStateException();
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139 }
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140 editor = either.b();
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141
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142 NodeEditor e = new NodeEditor(){
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143 public <T extends EditableNode<T>> Either<Error, T> edit(T _e){
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144 _e = _e.getAttributes().put("author",ByteBuffer.wrap(_author.getBytes())).b();
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145 _e = _e.getAttributes().put("mes",ByteBuffer.wrap(_initMessage.getBytes())).b();
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146 _e = _e.getAttributes().put("key",ByteBuffer.wrap(_editKey.getBytes())).b();
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147 ByteBuffer tBuffer = ByteBuffer.allocate(16);
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148 _e = _e.getAttributes().put("timestamp",tBuffer.putLong(timestamp)).b();
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149 return DefaultEither.newB(_e);
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150 }
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151 };
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152
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153 either = editor.edit(root.add(0),e);
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154 if(either.isA()){
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155 throw new IllegalStateException();
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156 }
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157 editor = either.b();
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158 editor.success();
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159 }
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160
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161 public void createBoardMessage(final String _board,final String _author,final String _message,final String _editKey)
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162 {
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163 JungleTree tree = jungle.getTreeByName(_board);
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164 if(tree == null){
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165 throw new IllegalStateException();
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166 }
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167
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168 Either<Error, JungleTreeEditor> either;
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169 do{
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170 Node node = tree.getRootNode();
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171 int size = node.getChildren().size();
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172 DefaultNodePath path = new DefaultNodePath();
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173
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174 JungleTreeEditor editor = tree.getTreeEditor();
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175 either = editor.addNewChildAt(path,size);
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176 if(either.isA()){
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177 throw new IllegalStateException();
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178 }
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179 editor = either.b();
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180 final long timestamp = new Date().getTime();
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181 NodeEditor e = new NodeEditor(){
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182 public <T extends EditableNode<T>> Either<Error, T> edit(T _e){
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183 _e = _e.getAttributes().put("author",ByteBuffer.wrap(_author.getBytes())).b();
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184 _e = _e.getAttributes().put("mes",ByteBuffer.wrap(_message.getBytes())).b();
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185 _e = _e.getAttributes().put("key",ByteBuffer.wrap(_editKey.getBytes())).b();
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186 ByteBuffer tBuffer = ByteBuffer.allocate(16);
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187 _e = _e.getAttributes().put("timestamp",tBuffer.putLong(timestamp)).b();
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188 return DefaultEither.newB(_e);
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189 }
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190 };
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191 path = path.add(size);
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192 either = editor.edit(path,e);
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193 if(either.isA()){
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194 throw new IllegalStateException();
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195 }
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196 editor = either.b();
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197 either = editor.success();
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198
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199 }while(either.isA());
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200 }
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201
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202 public void editMessage(String _board,String _uuid,final String _author,final String _message,final String _editKey)
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203 {
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204 for(;;) {
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205 DefaultNodePath path = new DefaultNodePath();
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206 path = path.add(Integer.parseInt(_uuid));
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207
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208 JungleTree tree = jungle.getTreeByName(_board);
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209 JungleTreeEditor editor = tree.getTreeEditor();
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210 final long timestamp = new Date().getTime();
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211 NodeEditor e = new NodeEditor(){
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212 public <T extends EditableNode<T>> Either<Error, T> edit(T _e){
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213 _e = _e.getAttributes().put("author",ByteBuffer.wrap(_author.getBytes())).b();
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214 _e = _e.getAttributes().put("mes",ByteBuffer.wrap(_message.getBytes())).b();
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215 _e = _e.getAttributes().put("key",ByteBuffer.wrap(_editKey.getBytes())).b();
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216 ByteBuffer tBuffer = ByteBuffer.allocate(16);
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217 _e = _e.getAttributes().put("timestamp",tBuffer.putLong(timestamp)).b();
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218 return DefaultEither.newB(_e);
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219 }
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220 };
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221
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222 Either<Error, JungleTreeEditor> either = editor.edit(path,e);
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223 if(either.isA()){
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224 throw new IllegalStateException();
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225 }
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226 editor = either.b();
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227 either = editor.success();
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228 if(!either.isA()) {
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229 return;
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230 }
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231 }
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232
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233 }
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234
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235 public Iterable<BoardMessage> getMessages(String _boardName)
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236 {
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237 JungleTree tree = jungle.getTreeByName(_boardName);
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238 Node node = tree.getRootNode();
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239 Children<Node> chs = node.getChildren();
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240
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241 final AtomicInteger counter = new AtomicInteger(0);
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242 IterableConverter.Converter<BoardMessage,Node> converter = new IterableConverter.Converter<BoardMessage,Node>(){
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243 public BoardMessage conv(Node _b) {
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244 String uuid = Integer.toString(counter.get());
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245 String author = new String(_b.getAttributes().get("author").array());
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246 String message = new String(_b.getAttributes().get("mes").array());
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247 counter.incrementAndGet();
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248 return new BoardMessageImpl(author,message,uuid);
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249 }
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250 };
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251 return new IterableConverter<BoardMessage,Node>(chs,converter);
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252 }
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253
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254
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255
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256 private static class BoardMessageImpl implements BoardMessage
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257 {
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258 private final String author;
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259 private final String message;
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260 private final String uuid;
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261
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262 public BoardMessageImpl(String _author,String _message,String _uuid)
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263 {
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264 author = _author;
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265 message = _message;
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266 uuid = _uuid;
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267 }
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268
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269 public String getAuthor()
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270 {
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271 return author;
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272 }
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273
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274 public String getMessage()
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275 {
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276 return message;
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277 }
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278
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279 public String getUUID()
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280 {
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281 return uuid;
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282 }
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283 }
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284 }