org.springframework.util.comparator

类 CompoundComparator<T>

java.lang.Object

org.springframework.util.comparator.CompoundComparator<T>

所有已实现的接口:

Serializable, Comparator<T>

已过时。

as of Spring Framework 5.0, in favor of the standard JDK 8 Comparator.thenComparing(Comparator)

@Deprecated
public class CompoundComparator<T>
extends Object
implements Comparator<T>, Serializable

A comparator that chains a sequence of one or more Comparators.

A compound comparator calls each Comparator in sequence until a single Comparator returns a non-zero result, or the comparators are exhausted and zero is returned.

This facilitates in-memory sorting similar to multi-column sorting in SQL. The order of any single Comparator in the list can also be reversed.

从以下版本开始:

1.2.2

作者:

Keith Donald, Juergen Hoeller

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
CompoundComparator() 已过时。 Construct a CompoundComparator with initially no Comparators.
CompoundComparator(Comparator... comparators) 已过时。 Construct a CompoundComparator from the Comparators in the provided array.

方法概要

限定符和类型	方法和说明
void	addComparator(Comparator<? extends T> comparator) 已过时。 Add a Comparator to the end of the chain.
void	addComparator(Comparator<? extends T> comparator, boolean ascending) 已过时。 Add a Comparator to the end of the chain using the provided sort order.
int	compare(T o1, T o2) 已过时。
boolean	equals(Object other) 已过时。
int	getComparatorCount() 已过时。 Returns the number of aggregated comparators.
int	hashCode() 已过时。
void	invertOrder() 已过时。 Invert the sort order of each sort definition contained by this compound comparator.
void	invertOrder(int index) 已过时。 Invert the sort order of the sort definition at the specified index.
void	setAscendingOrder(int index) 已过时。 Change the sort order at the given index to ascending.
void	setComparator(int index, Comparator<? extends T> comparator) 已过时。 Replace the Comparator at the given index.
void	setComparator(int index, Comparator<T> comparator, boolean ascending) 已过时。 Replace the Comparator at the given index using the given sort order.
void	setDescendingOrder(int index) 已过时。 Change the sort order at the given index to descending sort.
String	toString() 已过时。

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 java.util.Comparator

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

构造器详细资料

CompoundComparator

public CompoundComparator()

已过时。

Construct a CompoundComparator with initially no Comparators. Clients must add at least one Comparator before calling the compare method or an IllegalStateException is thrown.

CompoundComparator

public CompoundComparator(Comparator... comparators)

已过时。

Construct a CompoundComparator from the Comparators in the provided array.

All Comparators will default to ascending sort order, unless they are InvertibleComparators.

参数:

comparators - the comparators to build into a compound comparator

另请参阅:

InvertibleComparator

方法详细资料

addComparator

public void addComparator(Comparator<? extends T> comparator)

已过时。

Add a Comparator to the end of the chain.

The Comparator will default to ascending sort order, unless it is a InvertibleComparator.

参数:

comparator - the Comparator to add to the end of the chain

另请参阅:

InvertibleComparator

addComparator

public void addComparator(Comparator<? extends T> comparator,
                          boolean ascending)

已过时。

Add a Comparator to the end of the chain using the provided sort order.

参数:

comparator - the Comparator to add to the end of the chain

ascending - the sort order: ascending (true) or descending (false)

setComparator

public void setComparator(int index,
                          Comparator<? extends T> comparator)

已过时。

Replace the Comparator at the given index.

The Comparator will default to ascending sort order, unless it is a InvertibleComparator.

参数:

index - the index of the Comparator to replace

comparator - the Comparator to place at the given index

另请参阅:

InvertibleComparator

setComparator

public void setComparator(int index,
                          Comparator<T> comparator,
                          boolean ascending)

已过时。

Replace the Comparator at the given index using the given sort order.

参数:

index - the index of the Comparator to replace

comparator - the Comparator to place at the given index

ascending - the sort order: ascending (true) or descending (false)

invertOrder

public void invertOrder()

已过时。

Invert the sort order of each sort definition contained by this compound comparator.

invertOrder

public void invertOrder(int index)

已过时。

Invert the sort order of the sort definition at the specified index.

参数:

index - the index of the comparator to invert

setAscendingOrder

public void setAscendingOrder(int index)

已过时。

Change the sort order at the given index to ascending.

参数:

index - the index of the comparator to change

setDescendingOrder

public void setDescendingOrder(int index)

已过时。

Change the sort order at the given index to descending sort.

参数:

index - the index of the comparator to change

getComparatorCount

public int getComparatorCount()

已过时。

Returns the number of aggregated comparators.

compare

public int compare(T o1,
                   T o2)

已过时。

指定者:

compare 在接口中 Comparator<T>

equals

public boolean equals(Object other)

已过时。

指定者:

equals 在接口中 Comparator<T>

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

已过时。

覆盖:

hashCode 在类中 Object

toString

public String toString()

已过时。

覆盖:

toString 在类中 Object