【8.3.0】【tree】更新pids计算，填充子节点的方法

kernel-d-tree/README.md

@@ -0,0 +1 @@
+## 树组件的操作

kernel-d-tree/pom.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>com.javaguns.roses</groupId>
+        <artifactId>roses-kernel</artifactId>
+        <version>8.3.0</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>kernel-d-tree</artifactId>
+
+    <packaging>jar</packaging>
+
+    <dependencies>
+
+        <!-- 基础依赖 -->
+        <dependency>
+            <groupId>com.javaguns.roses</groupId>
+            <artifactId>kernel-a-rule</artifactId>
+            <version>${roses.version}</version>
+        </dependency>
+
+        <!-- 数据库操作依赖，需要更新树节点的子节点 -->
+        <dependency>
+            <groupId>com.javaguns.roses</groupId>
+            <artifactId>db-api</artifactId>
+            <version>${roses.version}</version>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <finalName>${project.artifactId}</finalName>
+    </build>
+</project>

kernel-d-tree/src/main/java/cn/stylefeng/roses/kernel/rule/pidset/CalcParentIdListUtil.java

@@ -1,5 +1,7 @@
 package cn.stylefeng.roses.kernel.rule.pidset;
 
+import cn.hutool.extra.spring.SpringUtil;
+import cn.stylefeng.roses.kernel.db.api.DbOperatorApi;
 import cn.stylefeng.roses.kernel.rule.constants.SymbolConstant;
 import cn.stylefeng.roses.kernel.rule.constants.TreeConstants;
 import cn.stylefeng.roses.kernel.rule.pidset.callback.PidGetterService;
@@ -42,4 +44,39 @@ public class CalcParentIdListUtil {
 
     }
 
+    /**
+     * 检测是否变化了parentId，如果变化了parentId则需要更新子节点的子节点的pids
+     * <p>
+     * 更新节点的所有子节点的pid_list_string集合
+     *
+     * @author fengshuonan
+     * @since 2024/8/30 17:03
+     */
+    public static void updateParentIdStringList(String tableName, String pidsFieldName,
+                                                PidSettable oldItem, PidSettable newItem, PidGetterService pidGetterService) {
+
+        if (oldItem == null || newItem == null) {
+            return;
+        }
+
+        // 如果新旧pid都一样，则不需要更新
+        if (oldItem.getParentId().equals(newItem.getParentId())) {
+            return;
+        }
+
+        // 计算出来新的parentIdListString，并填充到新Item上
+        fillParentIds(newItem, pidGetterService);
+
+        // 计算出被更新的pids
+        String oldPids = oldItem.getParentIdListString();
+        oldPids = oldPids + SymbolConstant.COMMA + SymbolConstant.LEFT_SQUARE_BRACKETS + oldItem.getCurrentId() + SymbolConstant.RIGHT_SQUARE_BRACKETS;
+
+        // 将pids更改为新的pids
+        String newParentIds = newItem.getParentIdListString() + SymbolConstant.COMMA + SymbolConstant.LEFT_SQUARE_BRACKETS + newItem.getCurrentId() + SymbolConstant.RIGHT_SQUARE_BRACKETS;
+
+        // 更新pids结构
+        DbOperatorApi dbOperatorApi = SpringUtil.getBean(DbOperatorApi.class);
+        dbOperatorApi.updateSubParentIdListString(tableName, pidsFieldName, oldPids, newParentIds);
+    }
+
 }

kernel-d-tree/src/main/java/cn/stylefeng/roses/kernel/rule/pidset/ParentIdParseUtil.java

@@ -1,4 +1,4 @@
-package cn.stylefeng.roses.kernel.rule.tree.buildpids;
+package cn.stylefeng.roses.kernel.rule.pidset;
 
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.util.StrUtil;
@@ -12,7 +12,7 @@ import java.util.List;
  * @author fengshuonan
  * @since 2024/8/30 11:10
  */
-public class PidParseUtil {
+public class ParentIdParseUtil {
 
     /**
      * 将字符串类型的pid结构，解析成Long类型List

kernel-d-tree/src/main/java/cn/stylefeng/roses/kernel/rule/pidset/callback/PidSettable.java

@@ -8,6 +8,14 @@ package cn.stylefeng.roses.kernel.rule.pidset.callback;
  */
 public interface PidSettable {
 
+    /**
+     * 获取当前节点的本身的id
+     *
+     * @author fengshuonan
+     * @since 2024/8/30 17:16
+     */
+    Long getCurrentId();
+
     /**
      * 获取当前节点的上级id
      *
@@ -17,11 +25,19 @@ public interface PidSettable {
     Long getParentId();
 
     /**
-     * 填充pid string的值
+     * 填充pids的值
      *
      * @author fengshuonan
      * @since 2024/8/30 13:47
      */
     void setParentIdListString(String parentIdListString);
 
+    /**
+     * 获取当前节点的pids值
+     *
+     * @author fengshuonan
+     * @since 2024/8/30 17:14
+     */
+    String getParentIdListString();
+
 }

pom.xml

@@ -76,6 +76,9 @@
         <!--定时任务模块-->
         <module>kernel-d-timer</module>
 
+        <!--树节点操作-->
+        <module>kernel-d-tree</module>
+
         <!--参数校验模块-->
         <module>kernel-d-validator</module>