using System.Collections;
using System;

namespace JungleDB {
	public class DeleteAttributeOperation : NodeOperation {
		private string key;

		public DeleteAttributeOperation(string _key) {
			key = _key;
		}

		public Command getCommand() {
			return Command.DELETE_ATTRIBUTE;
		}

		public Either<Error, TreeNode> invoke(TreeNode _target) {
			return _target.getAttributes ().delete (key);
		}

		public int getPosition() {
			return -1;
		}

		public string getKey() {
			return key;
		}

		public object getValue() {
			return null;
		}
	}
}