org.hswebframework.web.api.crud.entity

类 TreeUtils

java.lang.Object

org.hswebframework.web.api.crud.entity.TreeUtils

public class TreeUtils
extends Object

构造器概要

构造器

构造器和说明
TreeUtils()

方法概要

限定符和类型	方法和说明
static <N> void	flatTree(Collection<N> nodeList, java.util.function.Function<N,Collection<N>> children, java.util.function.Consumer<N> handler) 平铺树结构
static <N,PK> List<N>	list2tree(Collection<N> dataList, java.util.function.Function<N,PK> idGetter, java.util.function.Function<N,PK> parentIdGetter, java.util.function.BiConsumer<N,List<N>> childConsumer) 列表结构转为树结构,并返回根节点集合.
static <N,PK> List<N>	list2tree(Collection<N> dataList, java.util.function.Function<N,PK> idGetter, java.util.function.Function<N,PK> parentIdGetter, java.util.function.BiConsumer<N,List<N>> childConsumer, java.util.function.BiPredicate<TreeSupportEntity.TreeHelper<N,PK>,N> rootPredicate) 列表结构转为树结构,并返回根节点集合
static <N> List<N>	treeToList(Collection<N> nodeList, java.util.function.Function<N,Collection<N>> children) 树结构转为List

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

TreeUtils

public TreeUtils()

方法详细资料

treeToList

public static <N> List<N> treeToList(Collection<N> nodeList,
                                     java.util.function.Function<N,Collection<N>> children)

树结构转为List

类型参数:

N - 节点类型

参数:

nodeList - List

children - 子节点获取函数

返回:

List

flatTree

public static <N> void flatTree(Collection<N> nodeList,
                                java.util.function.Function<N,Collection<N>> children,
                                java.util.function.Consumer<N> handler)

平铺树结构

类型参数:

N - 节点类型

参数:

nodeList - 树结构list

children - 子节点获取函数

handler - 平铺节点接收函数

list2tree

public static <N,PK> List<N> list2tree(Collection<N> dataList,
                                       java.util.function.Function<N,PK> idGetter,
                                       java.util.function.Function<N,PK> parentIdGetter,
                                       java.util.function.BiConsumer<N,List<N>> childConsumer)

列表结构转为树结构,并返回根节点集合.

根节点判断逻辑: parentId为空或者对应的节点数据没有在list中

类型参数:

N - 元素类型

PK - 主键类型

参数:

dataList - 数据集合

childConsumer - 子节点消费接口,用于设置子节点

返回:

根节点集合

list2tree

public static <N,PK> List<N> list2tree(Collection<N> dataList,
                                       java.util.function.Function<N,PK> idGetter,
                                       java.util.function.Function<N,PK> parentIdGetter,
                                       java.util.function.BiConsumer<N,List<N>> childConsumer,
                                       java.util.function.BiPredicate<TreeSupportEntity.TreeHelper<N,PK>,N> rootPredicate)

列表结构转为树结构,并返回根节点集合

类型参数:

N - 元素类型

PK - 主键类型

参数:

dataList - 数据集合

childConsumer - 子节点消费接口,用于设置子节点

rootPredicate - 根节点判断函数,传入helper,获取一个判断是否为根节点的函数

返回:

根节点集合