package com.dl.common.utils;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.lang.tree.Tree;
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import cn.hutool.core.lang.tree.TreeNodeConfig;
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import cn.hutool.core.lang.tree.TreeUtil;
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import cn.hutool.core.lang.tree.parser.NodeParser;
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import com.dl.common.utils.reflect.ReflectUtils;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import java.util.List;
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/**
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* 扩展 hutool TreeUtil 封装系统树构建
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*
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* @author Lion Li
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*/
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public class TreeBuildUtils extends TreeUtil {
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/**
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* 根据前端定制差异化字段
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*/
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public static final TreeNodeConfig DEFAULT_CONFIG = TreeNodeConfig.DEFAULT_CONFIG.setNameKey("label");
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public static <T, K> List<Tree<K>> build(List<T> list, NodeParser<T, K> nodeParser) {
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if (CollUtil.isEmpty(list)) {
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return null;
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}
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K k = ReflectUtils.invokeGetter(list.get(0), "parentId");
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return TreeUtil.build(list, k, DEFAULT_CONFIG, nodeParser);
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}
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}
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