Mercurial > hg > Database > jungle-network

annotate src/main/java/app/bbs/JungleManager.java @ 112:8f9811a1e00c

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Moved app files
author one
date Fri, 29 Nov 2013 04:31:22 +0900
parents src/main/java/jungle/app/bbs/JungleManager.java@f9e29a52efd3
children 7d9b7fcb4d9a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8f9811a1e00c Moved app files
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1 package app.bbs;
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3 import java.nio.ByteBuffer;
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4 import java.util.Iterator;
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5
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6 import alice.jungle.operations.NetworkTreeOperationLog;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.DefaultJungle;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultNodePath;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
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17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
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18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
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19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
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20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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22
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23 public class JungleManager {
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24 private static JungleManager jm = new JungleManager();
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25 private Jungle jungle;
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26 private static int NOT_CHANGE_POSITION = 0;
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27
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28 private JungleManager() {
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29 jungle = new DefaultJungle(null,"hogehoge",new DefaultTreeEditor(new DefaultTraverser()));
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30 }
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31
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32 public static void setJungle(Jungle _j) {
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33 jm.jungle = _j;
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34 }
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35
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36 public static Jungle getJungle() {
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37 return jm.jungle;
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38 }
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40 public static JungleTree createNewTree(String name) {
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41 return jm.jungle.createNewTree(name);
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42 }
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43
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44 public static Either<Error, JungleTreeEditor> edit(JungleTreeEditor _editor ,TreeOperationLog _log, int pos) {
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45 JungleTreeEditor editor = _editor;
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46 Either<Error, JungleTreeEditor> either = null;
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47 for (TreeOperation op : _log) {
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48 either = _edit(editor, op, pos);
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49 if(either.isA()) {
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50 return either;
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51 }
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52 editor = either.b();
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53 }
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54 return either;
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55 }
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56
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57 private static Either<Error, JungleTreeEditor> _edit(JungleTreeEditor editor,
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58 TreeOperation op, int _pos) {
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59 NodePath path = new DefaultNodePath();
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60 NodeOperation nodeOp = op.getNodeOperation();
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61 int pos = _pos;
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62 if (_pos == NOT_CHANGE_POSITION ) {
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63 pos = nodeOp.getPosition();
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64 }
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65 Command c = nodeOp.getCommand();
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66 String key = "";
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67 switch (c) {
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68 case PUT_ATTRIBUTE:
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69 path = op.getNodePath();
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70 key = nodeOp.getKey();
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71 ByteBuffer value = nodeOp.getValue();
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72 return editor.putAttribute(path, key, value);
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73 case DELETE_ATTRIBUTE:
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74 key = nodeOp.getKey();
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75 return editor.deleteAttribute(path, key);
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76 case APPEND_CHILD:
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77 return editor.addNewChildAt(path, pos);
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78 case DELETE_CHILD:
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79 return editor.deleteChildAt(path, 0);
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80 }
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81 return null;
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82 }
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83
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84 public static Either<Error, JungleTreeEditor> update(NetworkTreeOperationLog netLog) {
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85 String treeName = netLog.getTreeName();
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86 Jungle jungle = JungleManager.getJungle();
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87 if (jungle.getTreeByName(treeName) == null) {
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88 if(null == jungle.createNewTree(treeName)){
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89 throw new IllegalStateException();
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90 }
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91 }
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92 JungleTree tree = jungle.getTreeByName(treeName);
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93 JungleTreeEditor editor = tree.getLocalTreeEditor();
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95 // int pos = calculatePosition(tree.getRootNode(), netLog.getTimeStamp());
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96 int pos = 0;
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97 Either<Error, JungleTreeEditor> either = JungleManager.edit(editor, netLog, pos);
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98 if(either.isA()) {
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99 throw new IllegalStateException();
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100 }
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101 editor = either.b();
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102 either = editor.success();
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103 if(either.isA()) {
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104 throw new IllegalStateException();
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105 }
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106 return either;
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107 }
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108
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109 private static int calculatePosition(Node node, long newNodeTimeStamp) {
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110 int count = 0;
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111 long childTimeStamp = 0;
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112 for(Iterator<Node> iter = node.getChildren().iterator();iter.hasNext();) {
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113 Node n = iter.next();
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114 if(n.getAttributes().get("timestamp") == null) {
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115 return NOT_CHANGE_POSITION;
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116 }
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117 if(n.getAttributes().get("timestamp") != null) {
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118 childTimeStamp = n.getAttributes().get("timestamp").getLong();
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119 if (newNodeTimeStamp < childTimeStamp) {
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120 break;
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121 }
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122 }
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123 count++;
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124 }
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125 return count;
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126 }
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127 }