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

import fj.data.List;
import fj.data.TreeMap;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.LoggingNode;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.OperationLog;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
import jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index.Logging;

public class DeleteAttribute implements NodeEditor
{
	private final String key;
	public DeleteAttribute(String _key)
	{
		key = _key;
	}

	public Either<Error,Logging> _edit(Logging logNode)
	{
		Either<Error,Logging> either = logNode.getAttributes().delete(key);
		if(either.isA()){
			// error
			return either;
		}
		return DefaultEither.newB(either.b());
	}
	
	@Override
	public Either<Error, Logging> edit(TreeNode _e) {
		Logging logNode = wrap(_e);
		return _edit(logNode);
	}

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

	@Override
	public Logging wrap(TreeNode node, OperationLog op) {
		return new LoggingNode(node, op);
	}

	@Override
	public TreeMap<String, List<TreeNode>> getIndex() {
		// TODO Auto-generated method stub
		return null;
	}
}