Java tutorial
/** * <pre> * Copyright 2014,2015 sxq(songxinqiang@vip.qq.com). * * 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. * </pre> */ /* * 20151130--?5:24:19 * sxq(songxinqiang@vip.qq.com) */ package cn.songxinqiang.study.mybatis.sqlprovider; import java.util.Map; import org.apache.ibatis.jdbc.SQL; /** * * <p> * ?, , ????. * </p> * * @author sxq-20151130 * */ public class OrderSQLProvider { private static final String TABLE_NAME = "orders"; public String getSql(Map<String, Object> parameters) { Integer uid = (Integer) parameters.get("id"); SQL sql = new SQL().SELECT("order_id, order_no, order_price").FROM(TABLE_NAME); if (uid != null) { sql = sql.WHERE("order_id = #{id}"); } return sql.toString(); } public String getAllSql() { SQL sql = new SQL().SELECT("order_id, order_no, order_price").FROM(TABLE_NAME); return sql.toString(); } }