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zhouyu 10 months ago
parent c8135e8683
commit e577c3ec8e
1 changed files with 107 additions and 71 deletions
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178
snailmall-shipping-service/src/main/java/com/njupt/swg/dao/ShippingMapper.xml
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@ -1,9 +1,17 @@
<?xml version="1.0" encoding="UTF-8" ?>
<?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" >
<!-- 此为MyBatis的Mapper配置文件，namespace属性指定了该Mapper对应的接口全限定名，
MyBatis会依据这个namespace将这里定义的SQL语句与对应接口中的方法进行关联，方便调用和映射。
这里对应的接口是com.njupt.swg.dao.ShippingMapper，意味着这个文件中的SQL语句是为该接口中定义的方法提供具体实现的 -->
<mapper namespace="com.njupt.swg.dao.ShippingMapper" >
<!-- 定义了一个名为BaseResultMap的结果映射配置，用于将从数据库查询返回的结果集映射到Java对象（具体类型为com.njupt.swg.entity.Shipping）上。
通过<constructor>元素来指定构造函数参数与数据库表列之间的映射关系，详细说明了每个列对应的Java类型和JDBC类型等信息，
这样MyBatis就能准确地将查询结果中的数据填充到对应的Java对象中 -->
<resultMap id="BaseResultMap" type="com.njupt.swg.entity.Shipping" >
<constructor >
<idArg column="id" jdbcType="INTEGER" javaType="java.lang.Integer" />
<!-- 以下每个<arg>元素都对应着Shipping实体类构造函数的一个参数，指定了数据库表列名、对应的JDBC类型以及Java类型，
按照顺序依次为user_id、receiver_name等列，用于将查询结果准确地映射到Shipping对象的对应属性上 -->
<arg column="user_id" jdbcType="INTEGER" javaType="java.lang.Integer" />
<arg column="receiver_name" jdbcType="VARCHAR" javaType="java.lang.String" />
<arg column="receiver_phone" jdbcType="VARCHAR" javaType="java.lang.String" />
@ -17,171 +25,201 @@
<arg column="update_time" jdbcType="TIMESTAMP" javaType="java.util.Date" />
</constructor>
</resultMap>
<!-- 定义了一个名为Base_Column_List的SQL片段，包含了一系列数据库表中的列名，这些列名通常是在查询、插入、更新等操作中经常需要用到的。
通过定义这个片段，可以在其他SQL语句中方便地复用这些列名，提高代码的可维护性和简洁性 -->
<sql id="Base_Column_List" >
id, user_id, receiver_name, receiver_phone, receiver_mobile, receiver_province, receiver_city,
receiver_district, receiver_address, receiver_zip, create_time, update_time
id, user_id, receiver_name, receiver_phone, receiver_mobile, receiver_province, receiver_city,
receiver_district, receiver_address, receiver_zip, create_time, update_time
</sql>
<!-- 定义了一个名为selectByPrimaryKey的查询语句，用于根据主键（id）从数据库表（mmall_shipping）中查询记录。
resultMap属性指定了使用前面定义的BaseResultMap来将查询结果映射到对应的Java对象（Shipping类型）上，
parameterType指定了传入参数的类型为java.lang.Integer，也就是主键的类型，意味着这个查询语句期望接收一个整数类型的主键值作为参数。
SQL语句内部通过<include>标签引用了Base_Column_List片段来指定要查询的具体列，然后在where子句中通过#{id,jdbcType=INTEGER}的方式，
根据传入的主键值进行筛选，以获取对应主键的记录 -->
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
select
select
<include refid="Base_Column_List" />
from mmall_shipping
where id = #{id,jdbcType=INTEGER}
</select>
<!-- 定义了一个名为deleteByPrimaryKey的删除语句，用于根据主键（id）从数据库表（mmall_shipping）中删除对应的记录。
parameterType指定了传入参数的类型为java.lang.Integer，即主键的类型，表明该删除语句期望接收一个整数类型的主键值作为参数，
SQL语句中通过where子句使用#{id,jdbcType=INTEGER}的方式，根据传入的主键值确定要删除的具体记录 -->
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
delete from mmall_shipping
where id = #{id,jdbcType=INTEGER}
</delete>
<!-- 定义了一个名为insert的插入语句，用于向mmall_shipping表中插入一条新记录，parameterType指定了传入参数的类型为com.njupt.swg.entity.Shipping，
意味着这个插入语句期望接收一个Shipping类型的对象作为参数，该对象包含了要插入的各列数据。
useGeneratedKeys="true"表示启用数据库自增长主键功能，keyProperty="id"指定了将数据库生成的主键值赋给插入对象的id属性，方便后续获取新插入记录的主键值。
SQL语句中明确列出了要插入的各列名以及对应的参数值（通过#{列名,jdbcType=类型}的方式指定参数，如#{id,jdbcType=INTEGER}），
对于create_time和update_time列，使用了数据库函数now()来插入当前时间 -->
<insert id="insert" parameterType="com.njupt.swg.entity.Shipping" useGeneratedKeys="true" keyProperty="id">
insert into mmall_shipping (id, user_id, receiver_name,
receiver_phone, receiver_mobile, receiver_province,
receiver_city, receiver_district, receiver_address,
receiver_zip, create_time, update_time
)
values (#{id,jdbcType=INTEGER}, #{userId,jdbcType=INTEGER}, #{receiverName,jdbcType=VARCHAR},
#{receiverPhone,jdbcType=VARCHAR}, #{receiverMobile,jdbcType=VARCHAR}, #{receiverProvince,jdbcType=VARCHAR},
#{receiverCity,jdbcType=VARCHAR}, #{receiverDistrict,jdbcType=VARCHAR}, #{receiverAddress,jdbcType=VARCHAR},
#{receiverZip,jdbcType=VARCHAR}, now(), now()
)
insert into mmall_shipping (id, user_id, receiver_name,
receiver_phone, receiver_mobile, receiver_province,
receiver_city, receiver_district, receiver_address,
receiver_zip, create_time, update_time
)
values (#{id,jdbcType=INTEGER}, #{userId,jdbcType=INTEGER}, #{receiverName,jdbcType=VARCHAR},
#{receiverPhone,jdbcType=VARCHAR}, #{receiverMobile,jdbcType=VARCHAR}, #{receiverProvince,jdbcType=VARCHAR},
#{receiverCity,jdbcType=VARCHAR}, #{receiverDistrict,jdbcType=VARCHAR}, #{receiverAddress,jdbcType=VARCHAR},
#{receiverZip,jdbcType=VARCHAR}, now(), now()
)
</insert>
<!-- 定义了一个名为insertSelective的插入语句，相较于前面的insert语句，它更具选择性，只会插入那些非空值的列。
通过<trim>标签结合<if>标签来实现动态SQL拼接，<trim>标签用于去除多余的逗号等字符，<if>标签根据传入的Shipping对象的属性是否为null来决定是否添加对应的列和值到SQL语句中。
例如，如果Shipping对象的id属性不为null，就会在SQL语句的列部分添加id列，在值部分添加对应的#{id,jdbcType=INTEGER}参数，以此类推，对其他列也进行类似的条件判断插入操作，
这样可以更灵活地根据实际传入的对象数据情况进行插入操作，避免插入不必要的null值 -->
<insert id="insertSelective" parameterType="com.njupt.swg.entity.Shipping" >
insert into mmall_shipping
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
<if test="id!= null" >
id,
</if>
<if test="userId != null" >
<if test="userId!= null" >
user_id,
</if>
<if test="receiverName != null" >
<if test="receiverName!= null" >
receiver_name,
</if>
<if test="receiverPhone != null" >
<if test="receiverPhone!= null" >
receiver_phone,
</if>
<if test="receiverMobile != null" >
<if test="receiverMobile!= null" >
receiver_mobile,
</if>
<if test="receiverProvince != null" >
<if test="receiverProvince!= null" >
receiver_province,
</if>
<if test="receiverCity != null" >
<if test="receiverCity!= null" >
receiver_city,
</if>
<if test="receiverDistrict != null" >
<if test="receiverDistrict!= null" >
receiver_district,
</if>
<if test="receiverAddress != null" >
<if test="receiverAddress!= null" >
receiver_address,
</if>
<if test="receiverZip != null" >
<if test="receiverZip!= null" >
receiver_zip,
</if>
<if test="createTime != null" >
<if test="createTime!= null" >
create_time,
</if>
<if test="updateTime != null" >
<if test="updateTime!= null" >
update_time,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
<if test="id!= null" >
#{id,jdbcType=INTEGER},
</if>
<if test="userId != null" >
<if test="userId!= null" >
#{userId,jdbcType=INTEGER},
</if>
<if test="receiverName != null" >
<if test="receiverName!= null" >
#{receiverName,jdbcType=VARCHAR},
</if>
<if test="receiverPhone != null" >
<if test="receiverPhone!= null" >
#{receiverPhone,jdbcType=VARCHAR},
</if>
<if test="receiverMobile != null" >
<if test="receiverMobile!= null" >
#{receiverMobile,jdbcType=VARCHAR},
</if>
<if test="receiverProvince != null" >
<if test="receiverProvince!= null" >
#{receiverProvince,jdbcType=VARCHAR},
</if>
<if test="receiverCity != null" >
<if test="receiverCity!= null" >
#{receiverCity,jdbcType=VARCHAR},
</if>
<if test="receiverDistrict != null" >
<if test="receiverDistrict!= null" >
#{receiverDistrict,jdbcType=VARCHAR},
</if>
<if test="receiverAddress != null" >
<if test="receiverAddress!= null" >
#{receiverAddress,jdbcType=VARCHAR},
</if>
<if test="receiverZip != null" >
<if test="receiverZip!= null" >
#{receiverZip,jdbcType=VARCHAR},
</if>
<if test="createTime != null" >
<if test="createTime!= null" >
now(),
</if>
<if test="updateTime != null" >
<if test="updateTime!= null" >
now(),
</if>
</trim>
</insert>
<!-- 定义了一个名为updateByPrimaryKeySelective的更新语句，用于根据主键（id）有选择性地更新mmall_shipping表中的记录。
通过<set>标签结合<if>标签实现动态SQL拼接，<if>标签根据传入的Shipping对象的各属性是否为null来决定是否添加对应的更新语句到SQL中。
例如，如果Shipping对象的userId属性不为null，就会在<set>标签内添加user_id = #{userId,jdbcType=INTEGER}这样的更新语句，以此类推，对其他属性也进行类似判断更新操作，
最后通过where子句根据主键值（#{id,jdbcType=INTEGER}）确定要更新的具体记录，这样可以只更新那些有实际值变化的列，避免不必要的全列更新 -->
<update id="updateByPrimaryKeySelective" parameterType="com.njupt.swg.entity.Shipping" >
update mmall_shipping
<set >
<if test="userId != null" >
<if test="userId!= null" >
user_id = #{userId,jdbcType=INTEGER},
</if>
<if test="receiverName != null" >
<if test="receiverName!= null" >
receiver_name = #{receiverName,jdbcType=VARCHAR},
</if>
<if test="receiverPhone != null" >
<if test="receiverPhone!= null" >
receiver_phone = #{receiverPhone,jdbcType=VARCHAR},
</if>
<if test="receiverMobile != null" >
<if test="receiverMobile!= null" >
receiver_mobile = #{receiverMobile,jdbcType=VARCHAR},
</if>
<if test="receiverProvince != null" >
<if test="receiverProvince!= null" >
receiver_province = #{receiverProvince,jdbcType=VARCHAR},
</if>
<if test="receiverCity != null" >
<if test="receiverCity!= null" >
receiver_city = #{receiverCity,jdbcType=VARCHAR},
</if>
<if test="receiverDistrict != null" >
<if test="receiverDistrict!= null" >
receiver_district = #{receiverDistrict,jdbcType=VARCHAR},
</if>
<if test="receiverAddress != null" >
<if test="receiverAddress!= null" >
receiver_address = #{receiverAddress,jdbcType=VARCHAR},
</if>
<if test="receiverZip != null" >
<if test="receiverZip!= null" >
receiver_zip = #{receiverZip,jdbcType=VARCHAR},
</if>
<if test="createTime != null" >
<if test="createTime!= null" >
create_time = #{createTime,jdbcType=TIMESTAMP},
</if>
<if test="updateTime != null" >
<if test="updateTime!= null" >
update_time = now(),
</if>
</set>
where id = #{id,jdbcType=INTEGER}
</update>
<!-- 定义了一个名为updateByPrimaryKey的更新语句，用于根据主键（id）更新mmall_shipping表中的记录。
该语句会对Shipping对象对应的所有列进行更新，不管传入的对象各属性是否为null，都会将对应列的值更新到数据库表中，
通过where子句根据主键值（#{id,jdbcType=INTEGER}）确定要更新的具体记录 -->
<update id="updateByPrimaryKey" parameterType="com.njupt.swg.entity.Shipping" >
update mmall_shipping
set user_id = #{userId,jdbcType=INTEGER},
receiver_name = #{receiverName,jdbcType=VARCHAR},
receiver_phone = #{receiverPhone,jdbcType=VARCHAR},
receiver_mobile = #{receiverMobile,jdbcType=VARCHAR},
receiver_province = #{receiverProvince,jdbcType=VARCHAR},
receiver_city = #{receiverCity,jdbcType=VARCHAR},
receiver_district = #{receiverDistrict,jdbcType=VARCHAR},
receiver_address = #{receiverAddress,jdbcType=VARCHAR},
receiver_zip = #{receiverZip,jdbcType=VARCHAR},
create_time = #{createTime,jdbcType=TIMESTAMP},
update_time = now()
receiver_name = #{receiverName,jdbcType=VARCHAR},
receiver_phone = #{receiverPhone,jdbcType=VARCHAR},
receiver_mobile = #{receiverMobile,jdbcType=VARCHAR},
receiver_province = #{receiverProvince,jdbcType=VARCHAR},
receiver_city = #{receiverCity,jdbcType=VARCHAR},
receiver_district = #{receiverDistrict,jdbcType=VARCHAR},
receiver_address = #{receiverAddress,jdbcType=VARCHAR},
receiver_zip = #{receiverZip,jdbcType=VARCHAR},
create_time = #{createTime,jdbcType=TIMESTAMP},
update_time = now()
where id = #{id,jdbcType=INTEGER}
</update>
<!-- 定义了一个名为deleteByUserIdShippingId的删除语句，用于根据用户ID（userId）和地址ID（shippingId）从mmall_shipping表中删除对应的记录。
parameterType指定了传入参数的类型为map，意味着这个删除语句期望接收一个包含userId和shippingId键值对的Map对象作为参数，
SQL语句中通过WHERE子句使用#{userId}和#{shippingId}的方式，根据传入的Map中的对应值确定要删除的具体记录 -->
<delete id="deleteByUserIdShippingId" parameterType="map">
DELETE from mmall_shipping WHERE user_id=#{userId} and id = #{shippingId}
</delete>
<update id="updateByShipping" parameterType="com.njupt.swg.entity.Shipping">
<!-- 定义了一个名为updateByShipping的更新语句，用于根据Shipping对象的相关属性以及主键（id）和用户ID（userId）来更新mmall_shipping表中的记录。
该语句会对Shipping对象对应的多个列进行更新，不管传入的对象各属性是否为null，都会将对应列的值更新到数据库表中，
通过where子句根据主键值（#{id,jdbcType=INTEGER}）和用户ID值（#{userId,jdbcType=INTEGER}）确定要更新的具体记录 -->
<update id="updateByShipping" parameterType="com.njupt.swg.entity.Shipping">
update mmall_shipping
set
receiver_name = #{receiverName,jdbcType=VARCHAR},
@ -195,14 +233,12 @@
create_time = #{createTime,jdbcType=TIMESTAMP},
update_time = now()
where id = #{id,jdbcType=INTEGER}
and user_id = #{userId,jdbcType=INTEGER}
and user_id = #{userId,jdbcType=INTEGER}
</update>
<!-- 定义了一个名为selectByUserIdShippingId的查询语句，用于根据用户ID（userId）和地址ID（shippingId）从mmall_shipping表中查询对应的记录。
parameterType指定了传入参数的类型为map，意味着这个查询语句期望接收一个包含userId和shippingId键值对的Map对象作为参数，
resultMap属性指定了使用前面定义的BaseResultMap来将查询结果映射到对应的Java对象（Shipping类型）上，
SQL语句中通过<include>标签引用了Base_Column_List片段来指定要查询的具体列，然后在where子句中通过#{userId}和#{shippingId}的方式，
根据传入的Map中的对应值进行筛选，以获取符合条件的记录 -->
<select id="selectByUserIdShippingId" parameterType="map" resultMap="BaseResultMap">
SELECT <include refid="Base_Column_List"/> from mmall_shipping where user_id = #{userId} and id = #{shippingId}
</select>
<select id="selectByUserId" parameterType="int" resultMap="BaseResultMap">
SELECT <include refid="Base_Column_List"/> from mmall_shipping where user_id = #{userId}
</select>
</mapper>
SELECT <include refid="Base_Column_List"/>
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