001 /** 002 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved. 003 * 004 * This library is free software; you can redistribute it and/or modify it under 005 * the terms of the GNU Lesser General Public License as published by the Free 006 * Software Foundation; either version 2.1 of the License, or (at your option) 007 * any later version. 008 * 009 * This library is distributed in the hope that it will be useful, but WITHOUT 010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 011 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 012 * details. 013 */ 014 015 package com.liferay.portal.kernel.increment; 016 017 /** 018 * @author Zsolt Berentey 019 */ 020 public interface Increment<T> { 021 022 public void decrease(T delta); 023 024 public Increment<T> decreaseForNew(T delta); 025 026 public T getValue(); 027 028 public void increase(T delta); 029 030 public Increment<T> increaseForNew(T delta); 031 032 public void setValue(T value); 033 034 }