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1 package jp.ac.u_ryukyu.ie.cr.jungle;
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2
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3 import jp.ac.u_ryukyu.ie.cr.jungle.store.NodePath;
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4 import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;
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5 import jp.ac.u_ryukyu.ie.cr.jungle.data.list.List;
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6 import jp.ac.u_ryukyu.ie.cr.jungle.persistent.ChangeListWriter;
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7 import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeContext;
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8 import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeEditor;
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9 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode;
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10 import jp.ac.u_ryukyu.ie.cr.jungle.transaction.DefaultJungleTreeEditor;
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11 import jp.ac.u_ryukyu.ie.cr.jungle.transaction.DefaultTransactionManager;
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12 import jp.ac.u_ryukyu.ie.cr.jungle.traverser.InterfaceTraverser;
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13 import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
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14 import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
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15 import jp.ac.u_ryukyu.ie.cr.jungle.util.GetOldTreeError;
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16 import jp.ac.u_ryukyu.ie.cr.jungle.store.index.ParentIndex;
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17 import jp.ac.u_ryukyu.ie.cr.jungle.data.treemap.TreeMap;
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18
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19 import java.util.concurrent.atomic.AtomicReference;
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20
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21 public class DefaultJungleTree implements JungleTree {
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22
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23 private final AtomicReference<TreeContext> repository;
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24 private final String uuid;
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25 private final ChangeListWriter writer;
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26 private final TreeEditor treeEditor;
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27
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28 public DefaultJungleTree(TreeContext tc, String uuid, ChangeListWriter writer, TreeEditor editor) {
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29 this.repository = new AtomicReference<TreeContext>(tc);
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30 this.uuid = uuid;
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31 this.writer = writer;
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32 this.treeEditor = editor;
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33 }
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34
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35 @Override
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36 public JungleTreeEditor getTreeEditor() {
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37 TreeContext tc = repository.get();
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38 DefaultTransactionManager txManager = new DefaultTransactionManager(writer, tc, repository, uuid);
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39 TreeNode root = tc.getRoot();
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40 return new DefaultJungleTreeEditor(root, txManager, treeEditor);
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41 }
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42
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43 @Override
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44 public JungleTreeEditor getLocalTreeEditor() {
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45 return getTreeEditor();
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46 }
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47
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48 @Override
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49 public TreeNode getRootNode() {
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50 TreeContext tc = repository.get();
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51 return tc.getRoot();
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52 }
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53
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54 @Override
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55 public InterfaceTraverser getTraverser(boolean useIndex) {
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56 TreeContext tc = repository.get();
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57 return tc.getTraverser();
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58 }
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59
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60 @Override
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61 public ParentIndex getParentIndex() {
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62 TreeContext tc = repository.get();
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63 return tc.getParentIndex();
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64 }
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65
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66 @Override
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67 public TreeMap<String, TreeMap<String, List<TreeNode>>> getIndex() {
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68 TreeContext tc = repository.get();
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69 return tc.getIndex();
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70 }
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71
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72 @Override
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73 public long revision() {
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74 TreeContext tc = repository.get();
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75 return tc.revision();
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76 }
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77
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78 @Override
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79 public Either<Error, JungleTree> getOldTree(long revision) {
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80 TreeContext tc = repository.get();
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81
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82 for (; tc.revision() != revision; ) {
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83 tc = tc.prev();
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84 if (tc == null)
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85 return DefaultEither.newA(GetOldTreeError.OLD_TREE_NOT_FOUND);
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86 }
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87
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88
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89 String oldTreeUuid = uuid + revision;
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90 JungleTree oldTree = new DefaultJungleTree(tc, oldTreeUuid, writer, treeEditor);
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91 return DefaultEither.newB(oldTree);
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92 }
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93
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94 @Override
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95 public Either<jp.ac.u_ryukyu.ie.cr.jungle.util.Error, TreeNode> getNodeOfPath(NodePath path) {
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96 TreeNode node = repository.get().getRoot();
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97 for (int num : path) {
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98 if (num == -1)
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99 continue;
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100 Either<Error, TreeNode> either = node.getChildren().at(num);
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101 if (either.isA())
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102 return either;
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103 node = either.b();
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104 }
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105 return DefaultEither.newB(node);
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106 }
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107
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108 @Override
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109 public void setBufferSize(int _bufferSize) {
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110 // not use
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111 }
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112
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113 }
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