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1 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer;
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2
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78
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3 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
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4 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.DefaultOperationLog;
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5 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.OperationLog;
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6 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.DeleteChildAtOperation;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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23
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11
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12 public class DeleteChildAt implements NodeEditor
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13 {
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14 private final int pos;
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15 private OperationLog log;
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16 public DeleteChildAt(int _pos)
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17 {
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18 pos = _pos;
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19 log = new DefaultOperationLog();
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20 }
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21
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22 @Override
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23 public Either<Error,TreeNode> edit(TreeNode _e)
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24 {
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25 NodeOperation deleteChildOperation = new DeleteChildAtOperation(pos);
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26 Either<Error,TreeNode> either = deleteChildOperation.invoke(_e);
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27 if(either.isA()){
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28 // error
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29 return either;
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30 }
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31 log = log.add(deleteChildOperation);
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32 return DefaultEither.newB(either.b());
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33 }
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34
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35 @Override
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36 public OperationLog getLog() {
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37 return log;
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38 }
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39 }
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