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

annotate src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/impl/logger/LoggingChildren.java @ 92:14ce7a0dedca

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Logging Node and Editor
author one
date Sat, 06 Sep 2014 05:03:10 +0900
parents 540a27dde42f
children bed3afd5c2e2
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1 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger;
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3 import java.util.Iterator;
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5 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Children;
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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.store.operations.AppendChildAtOperation;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.DeleteChildAtOperation;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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14 public class LoggingChildren //implements EditableChildren
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15 {
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16 private final TreeNode wrap;
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17 private final OperationLog log;
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19 public LoggingChildren(TreeNode _wrap,OperationLog _log)
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20 {
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21 wrap = _wrap;
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22 log = _log;
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23 }
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25 public int size()
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26 {
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27 Children children = wrap.getChildren();
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28 return children.size();
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29 }
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31 /*
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32 @Override
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33 public Iterator<LoggingNode> iterator()
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34 {
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35 LoggingChildren children = wrap.getChildren();
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36 return children.iterator();
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37 }*/
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39 public Either<Error,LoggingNode> edit(NodeOperation _op)
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40 {
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41 Either<Error,TreeNode> either = _op.invoke(wrap);
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42 if(either.isA()){
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43 return DefaultEither.newA(either.a());
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44 }
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46 TreeNode newWrap = either.b();
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47 OperationLog newLog = log.add(_op);
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48 LoggingNode newLoggingNode = new LoggingNode(newWrap,newLog);
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49 return DefaultEither.newB(newLoggingNode);
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50 }
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52 public Either<Error,LoggingNode> addNewChildAt(final int _pos)
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53 {
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54 NodeOperation addNewChildAt = new AppendChildAtOperation(_pos);
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55 return edit(addNewChildAt);
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56 }
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58 public Either<Error,LoggingNode> deleteChildAt(final int _pos)
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59 {
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60 NodeOperation deleteChildAt = new DeleteChildAtOperation(_pos);
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61 return edit(deleteChildAt);
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62 }
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64 public Either<Error,LoggingNode> at(int _pos)
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65 {
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66 Children children = wrap.getChildren();
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67 Either<Error,TreeNode> either = children.at(_pos);
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68 if(either.isA()){
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69 return DefaultEither.newA(either.a());
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70 }
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72 TreeNode node = either.b();
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73 return DefaultEither.newB(new LoggingNode(node));
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74 }
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75 }