知识点添加拼接字段并更新

sstudy/src/main/java/com/xhkjedu/sstudy/controller/subjectbook/PointController.java

@@ -69,6 +69,7 @@ public class PointController {
         if (point.getPointlevel() > 5) {
             return new ResultVo(1,"超过层级限制");
         }
+
         int result = pointService.addPoint(point);
         if (result > 0) {
             return new ResultVo(0, "保存成功");

sstudy/src/main/java/com/xhkjedu/sstudy/mapper/subjectbook/PointMapper.java

@@ -27,4 +27,10 @@ public interface PointMapper extends TkMapper<TPoint> {
 
     //根据知识点ID获取知识点信息
     TPoint getPointInfoById(@Param("pointid")String pointid);
+
+    //获取知识点全拼接字段
+    String getPointallByPointid(@Param("pointid")String pointid);
+
+    //修改拼接字段
+    void updatePointAll(@Param("pointid")String pointid, @Param("pointname")String pointname,@Param("pointlevel")Integer pointlevel);
 }

sstudy/src/main/java/com/xhkjedu/sstudy/service/subjectbook/PointService.java

@@ -3,10 +3,11 @@ package com.xhkjedu.sstudy.service.subjectbook;
 import com.xhkjedu.sstudy.mapper.subjectbook.PointMapper;
 import com.xhkjedu.sstudy.model.subjectbook.TPoint;
 import com.xhkjedu.sstudy.utils.StudyUtil;
-import com.xhkjedu.utils.N_Utils;
 import com.xhkjedu.sstudy.vo.subjectbook.PointVo;
+import com.xhkjedu.utils.N_Utils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -35,7 +36,18 @@ public class PointService {
         if ("".equals(point.getPointpid())) {
             point.setPointpid(null);
         }
+
         point.setCreatetime(N_Utils.getSecondTimestamp());
+
+        if (N_Utils.isEmpty(point.getPointpid())) {
+            //说明是1级知识点
+            point.setPointall(point.getPointname());
+        }else{
+            //非1级知识点，获取该父知识点的pointall字段值
+            String pointall = pointMapper.getPointallByPointid(point.getPointpid());
+            point.setPointall(pointall + ";" + point.getPointname());
+        }
+
         return pointMapper.insertSelective(point);
     }
 
@@ -46,7 +58,18 @@ public class PointService {
      * @param  * @param point
      * @return java.lang.Integer
      */
+    @Transactional(rollbackFor = Exception.class)
     public Integer updatePoint(TPoint point){
+        TPoint oldPoint = pointMapper.selectByPrimaryKey(point.getPointid());
+        if(oldPoint.getPointlevel() == 1){
+            //说明第一层
+            point.setPointall(point.getPointname());
+        }else{
+            //设置本层pointall字段
+            String pointall = oldPoint.getPointall().replaceAll(oldPoint.getPointname(),point.getPointname());
+            point.setPointall(pointall);
+        }
+        pointMapper.updatePointAll(point.getPointid(),point.getPointall(),oldPoint.getPointlevel());
         point.setCreatetime(N_Utils.getSecondTimestamp());
         return pointMapper.updateByPrimaryKeySelective(point);
     }

sstudy/src/main/resources/mapper/subjectbook/PointMapper.xml

@@ -37,9 +37,37 @@
 
     <!--根据知识点ID获取知识点信息-->
     <select id="getPointInfoById" resultType="com.xhkjedu.sstudy.model.subjectbook.TPoint">
-        select pointid,pointname,pointall,
+        select pointid,pointname,pointall,pointlevel,
          (select count(*) from t_point p where p.pointpid=#{pointid}) sonnum
         from t_point where pointid=#{pointid}
     </select>
 
+    <!--获取知识点全拼接字段-->
+    <select id="getPointallByPointid" resultType="java.lang.String">
+        select pointall from t_point where pointid=#{pointid}
+    </select>
+
+    <!--修改层级知识点-->
+    <update id="updatePointAll">
+        UPDATE t_point d1
+        <if test ="4 > pointlevel">LEFT JOIN t_point d2 ON d2.pointpid=d1.pointid</if>
+        <if test="3 > pointlevel">
+            LEFT JOIN t_point d3 ON d3.pointpid=d2.pointid
+        </if>
+        <if test="2 > pointlevel">
+            LEFT JOIN t_point d4 ON d4.pointpid=d3.pointid
+        </if>
+        SET d1.pointall=CONCAT(#{pointname},';',d1.pointname)
+        <if test="4 > pointlevel">
+            ,d2.pointall=CONCAT(#{pointname},';',d1.pointname,';',d2.pointname)
+        </if>
+        <if test="3 > pointlevel">
+            ,d3.pointall=CONCAT(#{pointname},';',d1.pointname,';',d2.pointname,';',d3.pointname)
+        </if>
+        <if test="2 > pointlevel">
+            ,d4.pointall=CONCAT(#{pointname},';',d1.pointname,';',d2.pointname,';',d3.pointname,';',d4.pointname)
+        </if>
+        WHERE d1.pointpid=#{pointid}
+    </update>
+
 </mapper>