Mercurial > hg > Members > shoshi > jungle > jungle-core
view src/main/java/jp/ac/u_ryukyu/ie/cr/jungleNetwork/persistent/PersistentJungleTree.java @ 263:cac88cf813f1 Implementation_of_communication
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author | tatsuki |
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date | Tue, 13 Dec 2016 00:00:18 +0900 |
parents | 33c93f162389 |
children | b3a04bc21b23 |
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package jp.ac.u_ryukyu.ie.cr.jungleNetwork.persistent; import jp.ac.u_ryukyu.ie.cr.jungle.tree.DefaultJungleTree; import jp.ac.u_ryukyu.ie.cr.jungle.tree.JungleTree; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.editor.jungleTreeEditor.JungleTreeEditor; import jp.ac.u_ryukyu.ie.cr.jungle.data.list.List; import jp.ac.u_ryukyu.ie.cr.jungle.data.treemap.TreeMap; import jp.ac.u_ryukyu.ie.cr.jungle.persistent.ChangeList; import jp.ac.u_ryukyu.ie.cr.jungle.persistent.ChangeListWriter; import jp.ac.u_ryukyu.ie.cr.jungle.store.nodepath.NodePath; import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeContext; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.editor.treeEditor.TreeEditor; import jp.ac.u_ryukyu.ie.cr.jungle.store.nodepath.DefaultNodePath; import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode; import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNodeChildren; import jp.ac.u_ryukyu.ie.cr.jungle.store.index.ParentIndex; import jp.ac.u_ryukyu.ie.cr.jungle.traverser.InterfaceTraverser; import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither; import jp.ac.u_ryukyu.ie.cr.jungle.util.Either; import jp.ac.u_ryukyu.ie.cr.jungle.util.Error; import jp.ac.u_ryukyu.ie.cr.jungle.util.GetOldTreeError; import java.util.Optional; import java.util.concurrent.atomic.AtomicReference; public class PersistentJungleTree implements JungleTree { private final AtomicReference<TreeContext> repository; private final String uuid; private final String treeName; private final ChangeListWriter writer; private final TreeEditor editor; private int bufferSize; public PersistentJungleTree(String _treeName, TreeContext _tc, String _uuid, ChangeListWriter _writer, TreeEditor _editor, int _bufferSize) { treeName = _treeName; repository = new AtomicReference<TreeContext>(_tc); uuid = _uuid; writer = _writer; editor = _editor; bufferSize = _bufferSize; } @Override public JungleTreeEditor getJungleTreeEditor() { TreeContext tc = repository.get(); PersistentTransactionManager txManager = new PersistentTransactionManager(treeName, writer, tc, repository, uuid, bufferSize); TreeNode root = tc.getRoot(); ChangeList cl = tc.getChangeList(); return new PersistentJungleTreeEditor(root, txManager, editor, cl.getLog()); } @Override public TreeNode getRootNode() { TreeContext tc = repository.get(); return tc.getRoot(); } @Override public JungleTreeEditor getLocalJungleTreeEditor() { return getJungleTreeEditor(); } @Override public long revision() { TreeContext tc = repository.get(); return tc.revision(); } @Override public Either<Error, JungleTree> getOldTree(long revision) { TreeContext tc = repository.get(); for (; tc.revision() != revision; ) { tc = tc.prev(); if (tc == null) return DefaultEither.newA(GetOldTreeError.OLD_TREE_NOT_FOUND); } String oldTreeUuid = uuid + revision; JungleTree oldTree = new DefaultJungleTree(tc, oldTreeUuid, writer, editor); return DefaultEither.newB(oldTree); } @Override public ParentIndex getParentIndex() { TreeContext tc = repository.get(); return tc.getParentIndex(); } @Override public TreeMap<String, TreeMap<String, List<TreeNode>>> getIndex() { TreeContext tc = repository.get(); return tc.getIndex(); } @Override public InterfaceTraverser getTraverser(boolean useIndex) { TreeMap<String, TreeMap<String, List<TreeNode>>> index = getIndex(); ParentIndex parentIndex = getParentIndex(); return new InterfaceTraverser(getRootNode(), index, parentIndex, useIndex); } @Override public Either<Error, TreeNode> getNodeOfPath(NodePath path) { TreeNode node = repository.get().getRoot(); for (int num : path) { if (num == -1) continue; Either<Error, TreeNode> either = node.getChildren().at(num); if (either.isA()) return either; node = either.b(); } return DefaultEither.newB(node); } @Override public void setBufferSize(int _bufferSize) { bufferSize = _bufferSize; } @Override public NodePath getNodePath(TreeNode node) { ParentIndex parentIndex = getParentIndex(); DefaultNodePath path = new DefaultNodePath(); Optional<TreeNode> parentOp = parentIndex.get(node); while(parentOp.isPresent()) { TreeNode parent = parentOp.get(); TreeNodeChildren children = parent.getChildren(); int num = 0; for (TreeNode child : children) { if (child == node) break; num++; } path = path.add(num); node = parent; parentOp = parentIndex.get(node); } return path; } }