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71
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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 jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
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6 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer.EditableNode;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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10
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11 import org.msgpack.annotation.Message;
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12
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13 import alice.jungle.datasegment.store.transformer.NetworkAppendChildAt;
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14
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15
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16 @Message
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17 public class NetworkAppendChildAtOperation implements NodeOperation {
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18
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19 // private final int pos;
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20 /* MessagePack can not handle final.*/
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21 private int pos;
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22
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23 /* Position -1 represent root position. */
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24 public NetworkAppendChildAtOperation() { pos = -2; }
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25
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26 public NetworkAppendChildAtOperation(int _pos) {
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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 return Command.APPEND_CHILD;
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33 }
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34
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35 @Override
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36 public <T extends EditableNode<T>> Either<Error, T> invoke(T _target) {
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37 NetworkAppendChildAt appendChildAt = new NetworkAppendChildAt(pos);
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38 return appendChildAt.edit(_target);
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39 }
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40
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41 @Override
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42 public int getPosition() {
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43 return pos;
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44 }
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45
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46 @Override
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47 public String getKey() {
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48 return null;
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49 }
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50
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51 @Override
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52 public ByteBuffer getValue() {
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53 return null;
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54 }
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55 }
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