Mercurial > hg > Members > shoshi > TreeCMSv2

annotate src/treecms/tree/cassandra/v1/CassandraTreeEditor.java @ 16:bb9760760744

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commit
author shoshi
date Sat, 21 May 2011 04:46:00 +0900
parents 12604eb6b615
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1 package treecms.tree.cassandra.v1;
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2
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3 import java.util.LinkedList;
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4
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5 import treecms.api.Node;
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6 import treecms.api.TreeEditor;
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7 import treecms.merger.Merger;
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8 import treecms.merger.ReplaceMerger;
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9 import treecms.tree.util.NodeData;
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11 class CassandraTreeEditor extends CassandraTree implements TreeEditor
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12 {
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13 public CassandraTreeEditor(CassandraTree _tree,CassandraForest _forest)
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14 {
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15 super(_tree.m_root,_forest);
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16 }
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17
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18 @Override
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19 public boolean commit(boolean _force)
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20 {
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21 return false;
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22 }
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24 @Override
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25 public boolean pull()
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26 {
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27 return false;
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28 }
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30 @Override
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31 public boolean check()
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32 {
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33 return false;
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34 }
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36 @Override
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37 public void merge()
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38 {
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39 Merger merger = new ReplaceMerger();
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40 }
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41
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42 @Override
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43 public synchronized Node updateTree(Node _target,NodeData _newData)
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44 {
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45 LinkedList<CassandraNode> path = findPath(m_root,(CassandraNode)_target,_newData);
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47 if(path == null)
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48 {
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49 //not found.
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50 return null;
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51 }
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52
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53
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54 //clone
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56
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57 m_root = path.peekFirst();
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58 return path.peekLast();
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59 }
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60
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61 CassandraNode cloneNode(CassandraNode _target,NodeData _newData)
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62 {
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63 CassandraNode clone = (CassandraNode)m_forest.createNode(_target.getID().update(),_newData);
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64 m_table.put(clone.getID().getUUID(),clone);
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65 return clone;
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66 }
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68 LinkedList<CassandraNode> findPath(CassandraNode _parent,CassandraNode _target,NodeData _newData)
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69 {
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70 if(_parent.getID().isFamily(_target.getID())){
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71 //find.
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72 LinkedList<CassandraNode> path = new LinkedList<CassandraNode>();
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73 path.addFirst(_target);
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74 return path;
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75 }
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77 for(Node child : _parent.getData().list()){
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78 LinkedList<CassandraNode> path = findPath((CassandraNode)child,_target,_newData);
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79 if(path != null){
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80 path.addFirst(_parent);
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81 return path;
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82 }
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83 }
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85 return null; //not found.
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86 }
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87 }