初始化v1

target/classes/mapper/ProductMapper.xml

@@ -0,0 +1,71 @@
+<?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.nlshop.mapper.ProductMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.Product">
+        <id column="id" property="id"/>
+        <result column="merchant_id" property="merchantId"/>
+        <result column="name" property="name"/>
+        <result column="category" property="category"/>
+        <result column="description" property="description"/>
+        <result column="base_price" property="basePrice"/>
+        <result column="image" property="image"/>
+        <result column="status" property="status"/>
+        <result column="create_time" property="createTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.Product" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO product (merchant_id, name, category, description, base_price, image, status)
+        VALUES (#{merchantId}, #{name}, #{category}, #{description}, #{basePrice}, #{image}, #{status})
+    </insert>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM product WHERE id = #{id}
+    </select>
+
+    <select id="selectByMerchantId" resultMap="BaseResultMap">
+        SELECT * FROM product WHERE merchant_id = #{merchantId}
+        <if test="status != null">
+            AND status = #{status}
+        </if>
+        ORDER BY create_time DESC
+    </select>
+
+    <select id="selectAll" resultMap="BaseResultMap">
+        SELECT * FROM product WHERE 1=1
+        <if test="category != null and category != ''">
+            AND category = #{category}
+        </if>
+        <if test="status != null">
+            AND status = #{status}
+        </if>
+        ORDER BY create_time DESC
+    </select>
+
+    <select id="selectHotProducts" resultMap="BaseResultMap">
+        SELECT p.*, SUM(oi.quantity) as sales
+        FROM product p
+        LEFT JOIN order_item oi ON p.id = oi.product_id
+        LEFT JOIN `order` o ON oi.order_id = o.id
+        WHERE o.order_status = 'COMPLETED' AND p.status = 1
+        GROUP BY p.id
+        ORDER BY sales DESC
+        LIMIT #{limit}
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.Product">
+        UPDATE product
+        <set>
+            <if test="name != null">name = #{name},</if>
+            <if test="category != null">category = #{category},</if>
+            <if test="description != null">description = #{description},</if>
+            <if test="basePrice != null">base_price = #{basePrice},</if>
+            <if test="image != null">image = #{image},</if>
+            <if test="status != null">status = #{status},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <update id="updateStatus">
+        UPDATE product SET status = #{status} WHERE id = #{id}
+    </update>
+</mapper>