Mybatis启用逆向工程面向对象形的QBC查询风格-----Mybatis框架

比眉伴天荒 2024-03-02 08:48 14阅读 0赞

>     package com.powernode.mybatis.Test;
>     
>     import com.powernode.mybatis.mappers.CarMapper;
>     import com.powernode.mybatis.pojo.Car;
>     import com.powernode.mybatis.pojo.CarExample;
>     import com.powernode.mybatis.utils.SqlSessionUtils;
>     import org.apache.ibatis.session.SqlSession;
>     import org.junit.Test;
>     import org.slf4j.Logger;
>     import org.slf4j.LoggerFactory;
>     
>     import java.util.List;
>     
>     public class TestGeneratorByMybatis
>     {
>         private static final Logger logger = LoggerFactory.getLogger(TestGeneratorByMybatis.class);
>         @Test
>         public void TestGeneratorByMybatis()
>         {
>             SqlSession sqlSession = SqlSessionUtils.openSession();
>             CarMapper mapper = sqlSession.getMapper(CarMapper.class);
>             int count = mapper.deleteByPrimaryKey(3L);
>             logger.info("" + count);
>             sqlSession.commit();
>             List<Car> carList = mapper.selectAll();
>             carList.forEach(car -> logger.info(car.toString()));
>             SqlSessionUtils.close(sqlSession);
>         }
>         @Test
>         public void GeneratorByMybatis()
>         {
>             SqlSession sqlSession = SqlSessionUtils.openSession();
>             CarMapper mapper = sqlSession.getMapper(CarMapper.class);
>             //按照条件查询
>             CarExample carExample = new CarExample();
>             //createCriteria用来创造查询条件,条件可能有多个
>             carExample.createCriteria().andBrandLike("长安")
>                     .andCarTypeEqualTo("新能源");
>             //添加OR查询
>             carExample.or().andGuidePriceGreaterThan(1L);
>             List<Car> carList = mapper.selectByExample(carExample);
>             //qbc风格,QueryByCriteria一种查询方式,比较面向对象,看不到查询语句SQL
>             carList.forEach(car -> logger.info(car.toString()));
>         }
>     }
> 
>     package com.powernode.mybatis.Test;
>     
>     import com.powernode.mybatis.mappers.CarMapper;
>     import com.powernode.mybatis.pojo.Car;
>     import com.powernode.mybatis.pojo.CarExample;
>     import com.powernode.mybatis.utils.SqlSessionUtils;
>     import org.apache.ibatis.session.SqlSession;
>     import org.junit.Test;
>     import org.slf4j.Logger;
>     import org.slf4j.LoggerFactory;
>     
>     import java.util.List;
>     
>     public class TestGeneratorByMybatis
>     {
>         private static final Logger logger = LoggerFactory.getLogger(TestGeneratorByMybatis.class);
>         @Test
>         public void TestGeneratorByMybatis()
>         {
>             SqlSession sqlSession = SqlSessionUtils.openSession();
>             CarMapper mapper = sqlSession.getMapper(CarMapper.class);
>             int count = mapper.deleteByPrimaryKey(3L);
>             logger.info("" + count);
>             sqlSession.commit();
>             List<Car> carList = mapper.selectAll();
>             carList.forEach(car -> logger.info(car.toString()));
>             SqlSessionUtils.close(sqlSession);
>         }
>         @Test
>         public void GeneratorByMybatis()
>         {
>             SqlSession sqlSession = SqlSessionUtils.openSession();
>             CarMapper mapper = sqlSession.getMapper(CarMapper.class);
>             //按照条件查询
>             CarExample carExample = new CarExample();
>             //createCriteria用来创造查询条件,条件可能有多个
>             carExample.createCriteria().andBrandLike("长安")
>                     .andCarTypeEqualTo("新能源");
>             //添加OR查询
>             carExample.or().andGuidePriceGreaterThan(1L);
>             List<Car> carList = mapper.selectByExample(carExample);
>             //qbc风格,QueryByCriteria一种查询方式,比较面向对象,看不到查询语句SQL
>             carList.forEach(car -> logger.info(car.toString()));
>         }
>     }

>     <?xml version="1.0" encoding="UTF-8"?>
>     <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
>     <mapper namespace="com.powernode.mybatis.mappers.CarMapper">
>       <resultMap id="BaseResultMap" type="com.powernode.mybatis.pojo.Car">
>         <id column="id" jdbcType="BIGINT" property="id" />
>         <result column="car_num" jdbcType="VARCHAR" property="carNum" />
>         <result column="brand" jdbcType="VARCHAR" property="brand" />
>         <result column="guide_price" jdbcType="DECIMAL" property="guidePrice" />
>         <result column="produce_time" jdbcType="CHAR" property="produceTime" />
>         <result column="car_type" jdbcType="VARCHAR" property="carType" />
>       </resultMap>
>       <sql id="Example_Where_Clause">
>         <where>
>           <foreach collection="oredCriteria" item="criteria" separator="or">
>             <if test="criteria.valid">
>               <trim prefix="(" prefixOverrides="and" suffix=")">
>                 <foreach collection="criteria.criteria" item="criterion">
>                   <choose>
>                     <when test="criterion.noValue">
>                       and ${criterion.condition}
>                     </when>
>                     <when test="criterion.singleValue">
>                       and ${criterion.condition} #{criterion.value}
>                     </when>
>                     <when test="criterion.betweenValue">
>                       and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
>                     </when>
>                     <when test="criterion.listValue">
>                       and ${criterion.condition}
>                       <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
>                         #{listItem}
>                       </foreach>
>                     </when>
>                   </choose>
>                 </foreach>
>               </trim>
>             </if>
>           </foreach>
>         </where>
>       </sql>
>       <sql id="Update_By_Example_Where_Clause">
>         <where>
>           <foreach collection="example.oredCriteria" item="criteria" separator="or">
>             <if test="criteria.valid">
>               <trim prefix="(" prefixOverrides="and" suffix=")">
>                 <foreach collection="criteria.criteria" item="criterion">
>                   <choose>
>                     <when test="criterion.noValue">
>                       and ${criterion.condition}
>                     </when>
>                     <when test="criterion.singleValue">
>                       and ${criterion.condition} #{criterion.value}
>                     </when>
>                     <when test="criterion.betweenValue">
>                       and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
>                     </when>
>                     <when test="criterion.listValue">
>                       and ${criterion.condition}
>                       <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
>                         #{listItem}
>                       </foreach>
>                     </when>
>                   </choose>
>                 </foreach>
>               </trim>
>             </if>
>           </foreach>
>         </where>
>       </sql>
>       <sql id="Base_Column_List">
>         id, car_num, brand, guide_price, produce_time, car_type
>       </sql>
>       <select id="selectByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultMap="BaseResultMap">
>         select
>         <if test="distinct">
>           distinct
>         </if>
>         <include refid="Base_Column_List" />
>         from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>         <if test="orderByClause != null">
>           order by ${orderByClause}
>         </if>
>       </select>
>       <select id="selectAll" resultMap="BaseResultMap">
>         select
>         <if test="distinct">
>           distinct
>         </if>
>         <include refid="Base_Column_List" />
>         from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </select>
>       <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
>         select 
>         <include refid="Base_Column_List" />
>         from t_car
>         where id = #{id,jdbcType=BIGINT}
>       </select>
>       <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
>         delete from t_car
>         where id = #{id,jdbcType=BIGINT}
>       </delete>
>       <delete id="deleteByExample" parameterType="com.powernode.mybatis.pojo.CarExample">
>         delete from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </delete>
>       <insert id="insert" parameterType="com.powernode.mybatis.pojo.Car">
>         insert into t_car (id, car_num, brand, 
>           guide_price, produce_time, car_type
>           )
>         values (#{id,jdbcType=BIGINT}, #{carNum,jdbcType=VARCHAR}, #{brand,jdbcType=VARCHAR}, 
>           #{guidePrice,jdbcType=DECIMAL}, #{produceTime,jdbcType=CHAR}, #{carType,jdbcType=VARCHAR}
>           )
>       </insert>
>       <insert id="insertSelective" parameterType="com.powernode.mybatis.pojo.Car">
>         insert into t_car
>         <trim prefix="(" suffix=")" suffixOverrides=",">
>           <if test="id != null">
>             id,
>           </if>
>           <if test="carNum != null">
>             car_num,
>           </if>
>           <if test="brand != null">
>             brand,
>           </if>
>           <if test="guidePrice != null">
>             guide_price,
>           </if>
>           <if test="produceTime != null">
>             produce_time,
>           </if>
>           <if test="carType != null">
>             car_type,
>           </if>
>         </trim>
>         <trim prefix="values (" suffix=")" suffixOverrides=",">
>           <if test="id != null">
>             #{id,jdbcType=BIGINT},
>           </if>
>           <if test="carNum != null">
>             #{carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="brand != null">
>             #{brand,jdbcType=VARCHAR},
>           </if>
>           <if test="guidePrice != null">
>             #{guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="produceTime != null">
>             #{produceTime,jdbcType=CHAR},
>           </if>
>           <if test="carType != null">
>             #{carType,jdbcType=VARCHAR},
>           </if>
>         </trim>
>       </insert>
>       <select id="countByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultType="java.lang.Long">
>         select count(*) from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </select>
>       <update id="updateByExampleSelective" parameterType="map">
>         update t_car
>         <set>
>           <if test="row.id != null">
>             id = #{row.id,jdbcType=BIGINT},
>           </if>
>           <if test="row.carNum != null">
>             car_num = #{row.carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="row.brand != null">
>             brand = #{row.brand,jdbcType=VARCHAR},
>           </if>
>           <if test="row.guidePrice != null">
>             guide_price = #{row.guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="row.produceTime != null">
>             produce_time = #{row.produceTime,jdbcType=CHAR},
>           </if>
>           <if test="row.carType != null">
>             car_type = #{row.carType,jdbcType=VARCHAR},
>           </if>
>         </set>
>         <if test="example != null">
>           <include refid="Update_By_Example_Where_Clause" />
>         </if>
>       </update>
>       <update id="updateByExample" parameterType="map">
>         update t_car
>         set id = #{row.id,jdbcType=BIGINT},
>           car_num = #{row.carNum,jdbcType=VARCHAR},
>           brand = #{row.brand,jdbcType=VARCHAR},
>           guide_price = #{row.guidePrice,jdbcType=DECIMAL},
>           produce_time = #{row.produceTime,jdbcType=CHAR},
>           car_type = #{row.carType,jdbcType=VARCHAR}
>         <if test="example != null">
>           <include refid="Update_By_Example_Where_Clause" />
>         </if>
>       </update>
>       <update id="updateByPrimaryKeySelective" parameterType="com.powernode.mybatis.pojo.Car">
>         update t_car
>         <set>
>           <if test="carNum != null">
>             car_num = #{carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="brand != null">
>             brand = #{brand,jdbcType=VARCHAR},
>           </if>
>           <if test="guidePrice != null">
>             guide_price = #{guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="produceTime != null">
>             produce_time = #{produceTime,jdbcType=CHAR},
>           </if>
>           <if test="carType != null">
>             car_type = #{carType,jdbcType=VARCHAR},
>           </if>
>         </set>
>         where id = #{id,jdbcType=BIGINT}
>       </update>
>       <update id="updateByPrimaryKey" parameterType="com.powernode.mybatis.pojo.Car">
>         update t_car
>         set car_num = #{carNum,jdbcType=VARCHAR},
>           brand = #{brand,jdbcType=VARCHAR},
>           guide_price = #{guidePrice,jdbcType=DECIMAL},
>           produce_time = #{produceTime,jdbcType=CHAR},
>           car_type = #{carType,jdbcType=VARCHAR}
>         where id = #{id,jdbcType=BIGINT}
>       </update>
>     </mapper>
> 
>     <?xml version="1.0" encoding="UTF-8"?>
>     <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
>     <mapper namespace="com.powernode.mybatis.mappers.CarMapper">
>       <resultMap id="BaseResultMap" type="com.powernode.mybatis.pojo.Car">
>         <id column="id" jdbcType="BIGINT" property="id" />
>         <result column="car_num" jdbcType="VARCHAR" property="carNum" />
>         <result column="brand" jdbcType="VARCHAR" property="brand" />
>         <result column="guide_price" jdbcType="DECIMAL" property="guidePrice" />
>         <result column="produce_time" jdbcType="CHAR" property="produceTime" />
>         <result column="car_type" jdbcType="VARCHAR" property="carType" />
>       </resultMap>
>       <sql id="Example_Where_Clause">
>         <where>
>           <foreach collection="oredCriteria" item="criteria" separator="or">
>             <if test="criteria.valid">
>               <trim prefix="(" prefixOverrides="and" suffix=")">
>                 <foreach collection="criteria.criteria" item="criterion">
>                   <choose>
>                     <when test="criterion.noValue">
>                       and ${criterion.condition}
>                     </when>
>                     <when test="criterion.singleValue">
>                       and ${criterion.condition} #{criterion.value}
>                     </when>
>                     <when test="criterion.betweenValue">
>                       and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
>                     </when>
>                     <when test="criterion.listValue">
>                       and ${criterion.condition}
>                       <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
>                         #{listItem}
>                       </foreach>
>                     </when>
>                   </choose>
>                 </foreach>
>               </trim>
>             </if>
>           </foreach>
>         </where>
>       </sql>
>       <sql id="Update_By_Example_Where_Clause">
>         <where>
>           <foreach collection="example.oredCriteria" item="criteria" separator="or">
>             <if test="criteria.valid">
>               <trim prefix="(" prefixOverrides="and" suffix=")">
>                 <foreach collection="criteria.criteria" item="criterion">
>                   <choose>
>                     <when test="criterion.noValue">
>                       and ${criterion.condition}
>                     </when>
>                     <when test="criterion.singleValue">
>                       and ${criterion.condition} #{criterion.value}
>                     </when>
>                     <when test="criterion.betweenValue">
>                       and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
>                     </when>
>                     <when test="criterion.listValue">
>                       and ${criterion.condition}
>                       <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
>                         #{listItem}
>                       </foreach>
>                     </when>
>                   </choose>
>                 </foreach>
>               </trim>
>             </if>
>           </foreach>
>         </where>
>       </sql>
>       <sql id="Base_Column_List">
>         id, car_num, brand, guide_price, produce_time, car_type
>       </sql>
>       <select id="selectByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultMap="BaseResultMap">
>         select
>         <if test="distinct">
>           distinct
>         </if>
>         <include refid="Base_Column_List" />
>         from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>         <if test="orderByClause != null">
>           order by ${orderByClause}
>         </if>
>       </select>
>       <select id="selectAll" resultMap="BaseResultMap">
>         select
>         <if test="distinct">
>           distinct
>         </if>
>         <include refid="Base_Column_List" />
>         from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </select>
>       <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
>         select 
>         <include refid="Base_Column_List" />
>         from t_car
>         where id = #{id,jdbcType=BIGINT}
>       </select>
>       <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
>         delete from t_car
>         where id = #{id,jdbcType=BIGINT}
>       </delete>
>       <delete id="deleteByExample" parameterType="com.powernode.mybatis.pojo.CarExample">
>         delete from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </delete>
>       <insert id="insert" parameterType="com.powernode.mybatis.pojo.Car">
>         insert into t_car (id, car_num, brand, 
>           guide_price, produce_time, car_type
>           )
>         values (#{id,jdbcType=BIGINT}, #{carNum,jdbcType=VARCHAR}, #{brand,jdbcType=VARCHAR}, 
>           #{guidePrice,jdbcType=DECIMAL}, #{produceTime,jdbcType=CHAR}, #{carType,jdbcType=VARCHAR}
>           )
>       </insert>
>       <insert id="insertSelective" parameterType="com.powernode.mybatis.pojo.Car">
>         insert into t_car
>         <trim prefix="(" suffix=")" suffixOverrides=",">
>           <if test="id != null">
>             id,
>           </if>
>           <if test="carNum != null">
>             car_num,
>           </if>
>           <if test="brand != null">
>             brand,
>           </if>
>           <if test="guidePrice != null">
>             guide_price,
>           </if>
>           <if test="produceTime != null">
>             produce_time,
>           </if>
>           <if test="carType != null">
>             car_type,
>           </if>
>         </trim>
>         <trim prefix="values (" suffix=")" suffixOverrides=",">
>           <if test="id != null">
>             #{id,jdbcType=BIGINT},
>           </if>
>           <if test="carNum != null">
>             #{carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="brand != null">
>             #{brand,jdbcType=VARCHAR},
>           </if>
>           <if test="guidePrice != null">
>             #{guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="produceTime != null">
>             #{produceTime,jdbcType=CHAR},
>           </if>
>           <if test="carType != null">
>             #{carType,jdbcType=VARCHAR},
>           </if>
>         </trim>
>       </insert>
>       <select id="countByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultType="java.lang.Long">
>         select count(*) from t_car
>         <if test="_parameter != null">
>           <include refid="Example_Where_Clause" />
>         </if>
>       </select>
>       <update id="updateByExampleSelective" parameterType="map">
>         update t_car
>         <set>
>           <if test="row.id != null">
>             id = #{row.id,jdbcType=BIGINT},
>           </if>
>           <if test="row.carNum != null">
>             car_num = #{row.carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="row.brand != null">
>             brand = #{row.brand,jdbcType=VARCHAR},
>           </if>
>           <if test="row.guidePrice != null">
>             guide_price = #{row.guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="row.produceTime != null">
>             produce_time = #{row.produceTime,jdbcType=CHAR},
>           </if>
>           <if test="row.carType != null">
>             car_type = #{row.carType,jdbcType=VARCHAR},
>           </if>
>         </set>
>         <if test="example != null">
>           <include refid="Update_By_Example_Where_Clause" />
>         </if>
>       </update>
>       <update id="updateByExample" parameterType="map">
>         update t_car
>         set id = #{row.id,jdbcType=BIGINT},
>           car_num = #{row.carNum,jdbcType=VARCHAR},
>           brand = #{row.brand,jdbcType=VARCHAR},
>           guide_price = #{row.guidePrice,jdbcType=DECIMAL},
>           produce_time = #{row.produceTime,jdbcType=CHAR},
>           car_type = #{row.carType,jdbcType=VARCHAR}
>         <if test="example != null">
>           <include refid="Update_By_Example_Where_Clause" />
>         </if>
>       </update>
>       <update id="updateByPrimaryKeySelective" parameterType="com.powernode.mybatis.pojo.Car">
>         update t_car
>         <set>
>           <if test="carNum != null">
>             car_num = #{carNum,jdbcType=VARCHAR},
>           </if>
>           <if test="brand != null">
>             brand = #{brand,jdbcType=VARCHAR},
>           </if>
>           <if test="guidePrice != null">
>             guide_price = #{guidePrice,jdbcType=DECIMAL},
>           </if>
>           <if test="produceTime != null">
>             produce_time = #{produceTime,jdbcType=CHAR},
>           </if>
>           <if test="carType != null">
>             car_type = #{carType,jdbcType=VARCHAR},
>           </if>
>         </set>
>         where id = #{id,jdbcType=BIGINT}
>       </update>
>       <update id="updateByPrimaryKey" parameterType="com.powernode.mybatis.pojo.Car">
>         update t_car
>         set car_num = #{carNum,jdbcType=VARCHAR},
>           brand = #{brand,jdbcType=VARCHAR},
>           guide_price = #{guidePrice,jdbcType=DECIMAL},
>           produce_time = #{produceTime,jdbcType=CHAR},
>           car_type = #{carType,jdbcType=VARCHAR}
>         where id = #{id,jdbcType=BIGINT}
>       </update>
>     </mapper>

>     package com.powernode.mybatis.mappers;
>     
>     import com.powernode.mybatis.pojo.Car;
>     import com.powernode.mybatis.pojo.CarExample;
>     import java.util.List;
>     import org.apache.ibatis.annotations.Param;
>     
>     public interface CarMapper {
>         long countByExample(CarExample example);
>     
>         int deleteByExample(CarExample example);
>     
>         int deleteByPrimaryKey(Long id);
>     
>         int insert(Car row);
>     
>         List<Car> selectAll();
>     
>         int insertSelective(Car row);
>     
>         List<Car> selectByExample(CarExample example);
>     
>         Car selectByPrimaryKey(Long id);
>     
>         int updateByExampleSelective(@Param("row") Car row, @Param("example") CarExample example);
>     
>         int updateByExample(@Param("row") Car row, @Param("example") CarExample example);
>     
>         int updateByPrimaryKeySelective(Car row);
>     
>         int updateByPrimaryKey(Car row);
>     }
> 
>     package com.powernode.mybatis.mappers;
>     
>     import com.powernode.mybatis.pojo.Car;
>     import com.powernode.mybatis.pojo.CarExample;
>     import java.util.List;
>     import org.apache.ibatis.annotations.Param;
>     
>     public interface CarMapper {
>         long countByExample(CarExample example);
>     
>         int deleteByExample(CarExample example);
>     
>         int deleteByPrimaryKey(Long id);
>     
>         int insert(Car row);
>     
>         List<Car> selectAll();
>     
>         int insertSelective(Car row);
>     
>         List<Car> selectByExample(CarExample example);
>     
>         Car selectByPrimaryKey(Long id);
>     
>         int updateByExampleSelective(@Param("row") Car row, @Param("example") CarExample example);
>     
>         int updateByExample(@Param("row") Car row, @Param("example") CarExample example);
>     
>         int updateByPrimaryKeySelective(Car row);
>     
>         int updateByPrimaryKey(Car row);
>     }