Mercurial > hg > Members > tatsuki > bench > jungle-core

annotate src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/impl/DefaultTreeEditor.java @ 112:98e256d9fd57

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treeAttribute add get String but has error
author one
date Mon, 15 Sep 2014 16:31:53 +0900
parents f9a0e7069811
children 74723b26ad96
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1 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl;
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3 import fj.data.List;
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4 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
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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.trasnformer.NodeEditor;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultEvaluator;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.Direction;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.Traversal;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.Traverser;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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14 import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.Logging;
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16 public class DefaultTreeEditor implements TreeEditor
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17 {
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18 private final Traverser traverser;
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20 public DefaultTreeEditor(Traverser traverser)
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21 {
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22 this.traverser = traverser;
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23 }
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25 @Override
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26 public Either<Error,Logging> edit(TreeNode root,NodePath path,NodeEditor editor)
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27 {
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28 DefaultEvaluator e = new DefaultEvaluator(path);
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29 Either<Error, Traversal> either = traverser.traverse(root,e);
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31 if(either.isA()){
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32 return DefaultEither.newA(either.a());
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33 }
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35 Traversal t = either.b();
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36 Either<Error,Logging> ret = clone(t,editor);
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38 return ret;
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39 }
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41 private Either<Error,Logging> clone(Traversal t,NodeEditor editor)
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42 {
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43 // copying nodes from bottom to root
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45 List<Direction<TreeNode>> path = List.nil();
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46 for(Direction<TreeNode> direction : t){
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47 path = path.cons(direction);
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48 }
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50 // target
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51 Direction<TreeNode> targetDirection = path.head();
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52 TreeNode target = targetDirection.getTarget();
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53 //EditableNodeWrapper<T> wrapper = new EditableNodeWrapper<T>(target);
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54 Either<Error,Logging> either = editor.edit(target);
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55 if(either.isA()){
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56 return DefaultEither.newA(either.a());
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57 }
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59 Logging newWrap = either.b();
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61 // top
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62 int pos = targetDirection.getPosition();
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63 TreeNode child = newWrap.getWrap();
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64 for(Direction<TreeNode> parentDirection : path.tail()){
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65 TreeNodeChildren chs = parentDirection.getTarget().getChildren();
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67 Either<Error,TreeNode> ret = chs.replaceNode(pos,child);
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68 if(ret.isA()){
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69 return DefaultEither.newA(ret.a());
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70 }
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72 TreeNode newParent = ret.b();
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73 child = newParent;
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74 pos = parentDirection.getPosition();
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75 }
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77 TreeNode newRoot = child;
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78 Logging logNode = editor.wrap(newRoot,newWrap.getOperationLog());
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79 return DefaultEither.newB(logNode);
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80 }
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81 }