Java tutorial
/** * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package com.liferay.portal.kernel.dao.orm; import com.liferay.portal.kernel.util.OrderByComparator; /** * @author Brian Wing Shun Chan */ public class OrderFactoryUtil { public static void addOrderByComparator(DynamicQuery dynamicQuery, OrderByComparator<?> obc) { if (obc == null) { return; } String[] orderByFields = obc.getOrderByFields(); for (String orderByField : orderByFields) { if (obc.isAscending(orderByField)) { dynamicQuery.addOrder(asc(orderByField)); } else { dynamicQuery.addOrder(desc(orderByField)); } } } public static Order asc(String propertyName) { return getOrderFactory().asc(propertyName); } public static Order desc(String propertyName) { return getOrderFactory().desc(propertyName); } public static OrderFactory getOrderFactory() { return _orderFactory; } public void setOrderFactory(OrderFactory orderFactory) { _orderFactory = orderFactory; } private static OrderFactory _orderFactory; }