package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations;

import java.nio.ByteBuffer;

import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;

public class ReplaceRootNodeOperation implements NodeOperation {

  @Override
  public Command getCommand() {
    return Command.REPLACE_ROOT;
  }

  @Override
  public Either<Error, TreeNode> invoke(TreeNode target) {
    return  target.appendRootNode();
  }

  @Override
  public int getPosition() {
    return -1;
  }

  @Override
  public String getKey() {
    return null;
  }

  @Override
  public ByteBuffer getValue() {
    return null;
  }

}