/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.epfl.data.squall.thetajoin.adaptive.advisor;

import java.io.Serializable;

/**
 * Class to represent a value of type T or null.
 */
public class Maybe<T> implements Serializable {
    /**
	 * 
	 */
    private static final long serialVersionUID = 1L;
    private final T data;

    public Maybe() {
	this.data = null;
    }

    public Maybe(T data) {
	this.data = data;
    }

    public T get() {
	return data;
    }

    public boolean isNone() {
	return data == null;
    }
}