新增接口，根据订单推荐采购计划

klp-wms/src/main/resources/mapper/klp/WmsStockMapper.xml

@@ -20,5 +20,10 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="updateBy" column="update_by"/>
     </resultMap>
 
+    <select id="getStockByItemId" resultType="java.math.BigDecimal">
+        select sum(quantity) as quantity from wms_stock
+        where item_id = #{rawMaterialId} and item_type = 'raw_material' and del_flag = 0
+    </select>
+
 
 </mapper>