知识点计算

src/main/java/com/project/information/domain/service/impl/SearchKnowledgePointDomainServiceImpl.java

@@ -1,5 +1,8 @@
 package com.project.information.domain.service.impl;
 
+import com.project.base.domain.exception.BusinessErrorException;
+import com.project.base.domain.exception.MissingParameterException;
+import com.project.base.domain.result.ResultCodeEnum;
 import com.project.information.domain.dto.KnowledgePointDTO;
 import com.project.information.domain.dto.KnowledgePointStatisticsDTO;
 import com.project.information.domain.service.SearchKnowledgePointDomainService;
@@ -16,19 +19,9 @@ public class SearchKnowledgePointDomainServiceImpl implements SearchKnowledgePoi
 
     @Override
     public KnowledgePointStatisticsDTO getSum(Long subLineId) {
-        List<KnowledgePointDTO> knowledgePointDTOList = knowledgePointMapper.selectBySubLineId(subLineId);
+        if (subLineId == null) {
-        Integer preciseSum = 0;
+            throw new MissingParameterException(ResultCodeEnum.MISSING_PARAMETER.getMessage());
-        Integer blurSum = 0;
-        for (KnowledgePointDTO knowledgePointDTO : knowledgePointDTOList) {
-            if (knowledgePointDTO.getBackgroundColor() == 0){
-                preciseSum ++;
-            }else if(knowledgePointDTO.getBackgroundColor() == 1){
-                preciseSum ++;
         }
-        }
+        return knowledgePointMapper.selectBySubLineId(subLineId);
-        KnowledgePointStatisticsDTO knowledgePointStatisticsDTO = new KnowledgePointStatisticsDTO();
-        knowledgePointStatisticsDTO.setPreciseSum(preciseSum);
-        knowledgePointStatisticsDTO.setBlurSum(blurSum);
-        return knowledgePointStatisticsDTO;
     }
 }

src/main/java/com/project/information/mapper/KnowledgePointMapper.java

@@ -3,6 +3,7 @@ package com.project.information.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.project.information.domain.dto.KnowledgePointDTO;
+import com.project.information.domain.dto.KnowledgePointStatisticsDTO;
 import com.project.information.domain.entity.KnowledgePointEntity;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Select;
@@ -12,11 +13,17 @@ import java.util.List;
 
 @Mapper
 public interface KnowledgePointMapper extends BaseMapper<KnowledgePointEntity> {
+
+    /**
+     * 统计知识点数量
+     */
     @Select({
-            "SELECT e.*" +
+            "SELECT",
-            "FROM evaluator_information e" +
+            "  SUM(CASE WHEN p.background_color = 0 THEN 1 ELSE 0 END) AS preciseSum,",
-            "INNER JOIN evaluator_knowledge_point p ON p.information_id = e.id" +
+            "  SUM(CASE WHEN p.background_color = 1 THEN 1 ELSE 0 END) AS blurSum",
-            "WHERE e.sub_line_id = #{subLineId};"
+            "FROM evaluator_knowledge_point e",
+            "INNER JOIN evaluator_knowledge_point p ON p.information_id = e.id",
+            "WHERE e.sub_line_id = #{subLineId}"
     })
-    List<KnowledgePointDTO> selectBySubLineId(@Param("subLineId") Long subLineId);
+    KnowledgePointStatisticsDTO selectBySubLineId(@Param("subLineId") Long subLineId);
 }