cn.crane4j.core.support

类 Crane4jGlobalSorter

java.lang.Object

cn.crane4j.core.support.Crane4jGlobalSorter

所有已实现的接口:

Comparator<Object>

public final class Crane4jGlobalSorter
extends Object
implements Comparator<Object>

An global sorter.

作者:

huangchengxing

字段概要

字段

限定符和类型	字段和说明
static Crane4jGlobalSorter	INSTANCE Default global singleton.
List<Function<Object,Integer>>	keyExtractors key extractor chain.

构造器概要

构造器

构造器和说明
Crane4jGlobalSorter()

方法概要

限定符和类型	方法和说明
void	addCompareValueExtractor(Function<Object,Integer> compareValueExtractor) Add comparator.
static <T> Comparator<T>	comparator() Get comparator instance.
int	compare(Object o1, Object o2) Compare instance.
int	getSortValue(Object target, int defVal) Get sort value.

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

字段详细资料

INSTANCE

public static final Crane4jGlobalSorter INSTANCE

Default global singleton.

keyExtractors

public List<Function<Object,Integer>> keyExtractors

key extractor chain.

构造器详细资料

Crane4jGlobalSorter

public Crane4jGlobalSorter()

方法详细资料

comparator

public static <T> Comparator<T> comparator()

Get comparator instance.

返回:

comparator

addCompareValueExtractor

public void addCompareValueExtractor(Function<Object,Integer> compareValueExtractor)

Add comparator.

参数:

compareValueExtractor - instance

compare

public int compare(Object o1,
                   Object o2)

Compare instance.

指定者:

compare 在接口中 Comparator<Object>

参数:

o1 - the first object to be compared.

o2 - the second object to be compared.

返回:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

抛出:

NullPointerException - if an argument is null and this comparator does not permit null arguments

ClassCastException - if the arguments' types prevent them from being compared by this comparator.

getSortValue

public int getSortValue(Object target,
                        int defVal)

Get sort value.

参数:

target - target

defVal - default value if cannot extract sort value from target

返回:

sort value