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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.TreeNode;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultJungleTreeEditor;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTransactionManager;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTreeContext;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TreeContext;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.InterfaceTraverser;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.GetOldTreeError;
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17 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.Index;
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18 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.IndexManager;
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19 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.ParentIndex;
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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 AtomicReservableReference<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 AtomicReservableReference<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.getTreeNode();
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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
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44 @Override
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45 public JungleTreeEditor getLocalTreeEditor() {
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46 return getTreeEditor();
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47 }
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48
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49 @Override
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50 public TreeNode getRootNode() {
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51 TreeContext tc = repository.get();
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52 ChangeSet cs = tc.getChangeSet();
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53 return cs.getRoot();
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54 }
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55
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56 @Override
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57 public InterfaceTraverser getTraverser(boolean useIndex) {
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58 AtomicReservableReference<TreeContext>.Reservation reservation = repository.getReservation();
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59 IndexManager indexManager = new IndexManager(reservation);
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60 Index index = getIndex();
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61 ParentIndex parentIndex = getParentIndex();
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62 return new InterfaceTraverser(getRootNode(), index, parentIndex, indexManager,useIndex);
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63 }
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64
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65 @Override
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66 public ParentIndex getParentIndex() {
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67 TreeContext tc = repository.get();
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68 ChangeSet cs = tc.getChangeSet();
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69 return cs.getParentIndex();
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70 }
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71
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72 @Override
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73 public Index getIndex() {
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74 TreeContext tc = repository.get();
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75 ChangeSet cs = tc.getChangeSet();
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76 return cs.getIndex();
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77 }
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79
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80 @Override
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81 public long revision() {
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82 TreeContext tc = repository.get();
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83 ChangeSet cs = tc.getChangeSet();
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84 return cs.revision();
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85 }
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86
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87 @Override
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88 public Either<Error, JungleTree> getOldTree(long revision) {
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89 TreeContext tc = repository.get();
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90 ChangeSet cs = tc.getChangeSet();
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91
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92 for (;cs.revision() != revision;) {
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93 cs = cs.prev();
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94 if (cs == null)
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95 return DefaultEither.newA(GetOldTreeError.OLD_TREE_NOT_FOUND);
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96 }
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97
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98 TreeNode root = cs.getRoot();
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99
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100 TreeContext oldTc = new DefaultTreeContext(root, cs);
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101 String oldTreeUuid = uuid + revision;
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102 JungleTree oldTree = new DefaultJungleTree(oldTc, oldTreeUuid, writer, treeEditor);
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103 return DefaultEither.newB(oldTree);
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104 }
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106
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107 }
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