Mercurial > hg > Database > jungle-network

annotate src/jungle/test/bbs/JungleManager.java @ 59:8a532ca5df80

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refactoring LogUpdateCodeSegment and ChildLogCheckCodeSegment
author one
date Mon, 15 Jul 2013 10:59:53 +0900
parents ccfe9b5e8f11
children ebf42371454b
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1 package jungle.test.bbs;
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2
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3 import java.io.IOException;
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4 import java.nio.ByteBuffer;
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5 import java.util.Iterator;
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6
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7 import alice.jungle.core.NetworkDefaultJungle;
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8 import alice.jungle.datasegment.store.operations.DefaultTreeOperationLogContainer;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.DefaultJungle;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultNodePath;
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17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
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18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.DefaultTreeOperationLog;
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19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
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20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
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21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
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22 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
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23 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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24 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultError;
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25 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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26 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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27
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28 public class JungleManager {
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29 private static JungleManager jm = new JungleManager();
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30 private Jungle jungle;
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32 private JungleManager() {
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34 }
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35
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36 public static void setJungle(Jungle _j) {
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37 jm.jungle = _j;
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38 }
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40 public static Jungle getJungle() {
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41 return jm.jungle;
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42 }
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43
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44 public static JungleTree createNewTree(String name) {
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45 return jm.jungle.createNewTree(name);
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46 }
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47
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48 public static Either<Error, JungleTreeEditor> edit(JungleTreeEditor _editor ,TreeOperationLog _log, int pos) {
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49 JungleTreeEditor editor = _editor;
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50 Either<Error, JungleTreeEditor> either = null;
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51 for (TreeOperation op : _log) {
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52 either = _edit(editor, op, pos);
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53 if(either.isA()) {
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54 return either;
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55 }
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56 editor = either.b();
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57 }
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58 return either;
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59 }
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60
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61 private static Either<Error, JungleTreeEditor> _edit(JungleTreeEditor editor,
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62 TreeOperation op, int pos) {
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63 DefaultNodePath path = new DefaultNodePath();
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64 NodeOperation nodeOp = op.getNodeOperation();
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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 = path.add(pos);
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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(DefaultTreeOperationLogContainer container) {
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85 DefaultTreeOperationLog log = null;
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86 try {
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87 log = container.convert();
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88 } catch (IOException e) {
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89 e.printStackTrace();
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90 }
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91 String treeName = container.getTreeName();
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92 if (JungleManager.getJungle().getTreeByName(treeName) == null) {
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93 if(null == JungleManager.getJungle().createNewTree(treeName)){
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94 throw new IllegalStateException();
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95 }
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96 }
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97 JungleTree tree = JungleManager.getJungle().getTreeByName(treeName);
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98 JungleTreeEditor editor = tree.getTreeEditor();
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99 int pos = checkTimeStamp(tree.getRootNode(), container.getTimeStamp(), container.getPosition());
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100 Either<Error, JungleTreeEditor> either = JungleManager.edit(editor, log, pos);
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101 if(either.isA()) {
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102 throw new IllegalStateException();
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103 }
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104 editor = either.b();
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105 either = editor.success();
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106 if(either.isA()) {
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107 throw new IllegalStateException();
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108 }
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109 return either;
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110 }
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111
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112
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113
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114 private static int checkTimeStamp(Node node, long newNodeTimeStamp, int containerPosition) {
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115 int count = 0;
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116 long childTimeStamp = 0;
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117 for(Iterator<Node> iter = node.getChildren().iterator();iter.hasNext();) {
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118 Node n = iter.next();
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119 if(n.getAttributes().get("timestamp") == null) {
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120 return containerPosition;
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121 }
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122 if(n.getAttributes().get("timestamp") != null) {
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123 childTimeStamp = n.getAttributes().get("timestamp").getLong();
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124 if (newNodeTimeStamp < childTimeStamp) {
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125 break;
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126 }
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127 }
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128 count++;
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129 }
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130 return count;
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131 }
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132 }