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/**
 * Copyright © 2009 HotPads ([email protected])
 *
 * 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 io.datarouter.scanner;

import java.util.function.Supplier;

/**
 * Lightweight alternative to AtomicReference for storing a mutable reference.
 */
public class Ref implements Supplier{

	private T ref;

	public Ref(T ref){
		this.ref = ref;
	}

	public T set(T ref){
		this.ref = ref;
		return ref;
	}

	@Override
	public T get(){
		return ref;
	}
}