双机架轧辊管理

klp-mes/src/main/resources/mapper/roll/MesRollStandbyMapper.xml

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+<?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.klp.mes.roll.mapper.MesRollStandbyMapper">
+
+    <!-- 按机架查询下批轧辊，附带辊位中文标签 -->
+    <select id="selectByStand" resultType="com.klp.mes.roll.domain.vo.MesRollStandbyVo">
+        SELECT
+            standby_id, stand_no, roll_no, roll_type, position,
+            CASE
+                WHEN roll_type = 'BR' AND position = 'UP'   THEN '上支撑辊'
+                WHEN roll_type = 'WR' AND position = 'UP'   THEN '上工作辊'
+                WHEN roll_type = 'WR' AND position = 'DOWN' THEN '下工作辊'
+                WHEN roll_type = 'BR' AND position = 'DOWN' THEN '下支撑辊'
+                ELSE CONCAT(position, roll_type)
+            END AS position_label,
+            diameter, roughness, crown, ready_time, remark, create_time
+        FROM mes_roll_standby
+        WHERE del_flag = 0
+          AND stand_no = #{standNo}
+        ORDER BY
+            FIELD(roll_type, 'BR', 'WR', 'WR', 'BR'),
+            FIELD(position, 'UP', 'UP', 'DOWN', 'DOWN')
+    </select>
+
+    <!-- 逻辑删除指定机架所有下批轧辊（清空） -->
+    <update id="clearByStand">
+        UPDATE mes_roll_standby
+        SET del_flag = 1
+        WHERE del_flag = 0
+          AND stand_no = #{standNo}
+    </update>
+
+</mapper>