package jp.ac.u_ryukyu.ie.cr.jungle.store.trasnformer;

import jp.ac.u_ryukyu.ie.cr.jungle.store.logger.LoggingNode;
import jp.ac.u_ryukyu.ie.cr.jungle.store.logger.OperationLog;
import jp.ac.u_ryukyu.ie.cr.jungle.transaction.node.TreeNode;
import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.jungle.util.jungleError.Error;

import java.nio.ByteBuffer;

/**
 * Created by e115731 on 2017/01/04.
 */
public class RedBlackTreeDeleteChildAt implements NodeEditor {
    private final String key;
    private final ByteBuffer value;

    public RedBlackTreeDeleteChildAt(String key, ByteBuffer value) {
        this.key = key;
        this.value = value;
    }

    public Either<Error, LoggingNode> _edit(LoggingNode logNode) {
        Either<Error, LoggingNode> either = logNode.getChildren().redBlackTreeDeleteChildAt(key, value);
        if (either.isA()) {
            // error
            return either;
        }
        return DefaultEither.newB(either.b());
    }

    @Override
    public Either<Error, LoggingNode> edit(TreeNode _e) {
        LoggingNode logNode = wrap(_e);
        return _edit(logNode);
    }

    public LoggingNode wrap(TreeNode node) {
        return new LoggingNode(node);
    }

    @Override
    public LoggingNode wrap(TreeNode newRoot, TreeNode editedNode, OperationLog operationLog) {
        return new LoggingNode(newRoot, editedNode, operationLog);
    }

}