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1 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle;
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2
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3 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListWriter;
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4 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.ChangeSet;
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5 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.TreeEditor;
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6 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.IndexTreeEditor;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultJungleTreeEditor;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTransactionManager;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTreeContext;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TreeContext;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.InterfaceTraverser;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.GetOldTreeError;
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18 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.Index;
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19 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.IndexManager;
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20 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.ParentIndex;
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21
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22 public class DefaultJungleTree implements JungleTree {
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23
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24 private final AtomicReservableReference<TreeContext> repository;
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25 private final String uuid;
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26 private final ChangeListWriter writer;
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27 private final TreeEditor treeEditor;
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28
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29 public DefaultJungleTree(TreeContext tc, String uuid, ChangeListWriter writer, TreeEditor editor) {
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30 this.repository = new AtomicReservableReference<TreeContext>(tc);
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31 this.uuid = uuid;
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32 this.writer = writer;
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33 this.treeEditor = editor;
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34 }
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35
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36 @Override
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37 public JungleTreeEditor getTreeEditor() {
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38 TreeContext tc = repository.get();
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39 DefaultTransactionManager txManager = new DefaultTransactionManager(writer, tc, repository, uuid);
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40 TreeNode root = tc.getTreeNode();
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41 return new DefaultJungleTreeEditor(root, txManager, treeEditor);
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42 }
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43
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45 @Override
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46 public JungleTreeEditor getLocalTreeEditor() {
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47 return getTreeEditor();
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48 }
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49
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50 @Override
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51 public TreeNode getRootNode() {
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52 TreeContext tc = repository.get();
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53 ChangeSet cs = tc.getChangeSet();
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54 return cs.getRoot();
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55 }
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56
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57 @Override
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58 public InterfaceTraverser getTraverser(boolean useIndex) {
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59 AtomicReservableReference<TreeContext>.Reservation reservation = repository.getReservation();
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60 IndexManager indexManager = new IndexManager(reservation);
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61 Index index = getIndex();
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62 ParentIndex parentIndex = getParentIndex();
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63 return new InterfaceTraverser(getRootNode(), index, parentIndex, indexManager,useIndex);
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64 }
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65
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66 @Override
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67 public ParentIndex getParentIndex() {
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68 TreeContext tc = repository.get();
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69 ChangeSet cs = tc.getChangeSet();
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70 return cs.getParentIndex();
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71 }
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72
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73 @Override
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74 public Index getIndex() {
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75 TreeContext tc = repository.get();
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76 ChangeSet cs = tc.getChangeSet();
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77 return cs.getIndex();
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78 }
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79
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80
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81 @Override
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82 public long revision() {
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83 TreeContext tc = repository.get();
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84 ChangeSet cs = tc.getChangeSet();
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85 return cs.revision();
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86 }
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87
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88 @Override
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89 public Either<Error, JungleTree> getOldTree(long revision) {
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90 TreeContext tc = repository.get();
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91 ChangeSet cs = tc.getChangeSet();
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92
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93 for (;cs.revision() != revision;) {
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94 cs = cs.prev();
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95 if (cs == null)
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96 return DefaultEither.newA(GetOldTreeError.OLD_TREE_NOT_FOUND);
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97 }
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98
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99 TreeNode root = cs.getRoot();
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100
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101 TreeContext oldTc = new DefaultTreeContext(root, cs);
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102 String oldTreeUuid = uuid + revision;
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103 JungleTree oldTree = new DefaultJungleTree(oldTc, oldTreeUuid, writer, treeEditor);
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104 return DefaultEither.newB(oldTree);
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105 }
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107
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108 }
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