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1 package alice.jungle.operations;
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2
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3 import java.nio.ByteBuffer;
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4
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5 import org.msgpack.annotation.Message;
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6
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
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180
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
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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.store.trasnformer.DeleteChildAt;
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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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13
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14 @Message
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15 public class NetworkDeleteChildAtOperation implements NodeOperation
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16 {
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17 /* MessagePack cannot handle final.*/
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18 //private final int pos;
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19 private int pos;
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20
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21
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109
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22 public NetworkDeleteChildAtOperation() {}
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23
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24 /* Position -1 represent root position. */
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25 public NetworkDeleteChildAtOperation(int _pos)
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26 {
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27 pos = _pos;
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28 }
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29
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30 @Override
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31 public Command getCommand()
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32 {
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33 return Command.DELETE_CHILD;
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34 }
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35
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36 @Override
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37 public Either<Error, TreeNode> invoke(TreeNode _target)
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38 {
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39 return _target.getChildren().deleteChildAt(pos);
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40 }
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41
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42 @Override
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43 public int getPosition()
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44 {
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45 return pos;
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46 }
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47
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48 @Override
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49 public String getKey()
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50 {
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51 return null;
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52 }
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53
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54 @Override
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55 public ByteBuffer getValue()
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56 {
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57 return null;
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58 }
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59 }
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