org.springframework.beans.support

类 PropertyComparator<T>

java.lang.Object

org.springframework.beans.support.PropertyComparator<T>

所有已实现的接口:

Comparator<T>

public class PropertyComparator<T>
extends Object
implements Comparator<T>

PropertyComparator performs a comparison of two beans, evaluating the specified bean property via a BeanWrapper.

从以下版本开始:

19.05.2003

作者:

Juergen Hoeller, Jean-Pierre Pawlak

另请参阅:

BeanWrapper

字段概要

字段

限定符和类型	字段和说明
protected Log	logger

构造器概要

构造器

构造器和说明
PropertyComparator(SortDefinition sortDefinition) Create a new PropertyComparator for the given SortDefinition.
PropertyComparator(String property, boolean ignoreCase, boolean ascending) Create a PropertyComparator for the given settings.

方法概要

限定符和类型	方法和说明
int	compare(T o1, T o2)
SortDefinition	getSortDefinition() Return the SortDefinition that this comparator uses.
static void	sort(List<?> source, SortDefinition sortDefinition) Sort the given List according to the given sort definition.
static void	sort(Object[] source, SortDefinition sortDefinition) Sort the given source according to the given sort definition.

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

logger

protected final Log logger

构造器详细资料

PropertyComparator

public PropertyComparator(SortDefinition sortDefinition)

Create a new PropertyComparator for the given SortDefinition.

另请参阅:

MutableSortDefinition

PropertyComparator

public PropertyComparator(String property,
                          boolean ignoreCase,
                          boolean ascending)

Create a PropertyComparator for the given settings.

参数:

property - the property to compare

ignoreCase - whether upper and lower case in String values should be ignored

ascending - whether to sort ascending (true) or descending (false)

方法详细资料

getSortDefinition

public final SortDefinition getSortDefinition()

Return the SortDefinition that this comparator uses.

compare

public int compare(T o1,
                   T o2)

指定者:

compare 在接口中 Comparator<T>

sort

public static void sort(List<?> source,
                        SortDefinition sortDefinition)
                 throws BeansException

Sort the given List according to the given sort definition.

Note: Contained objects have to provide the given property in the form of a bean property, i.e. a getXXX method.

参数:

source - the input List

sortDefinition - the parameters to sort by

抛出:

IllegalArgumentException - in case of a missing propertyName

BeansException

sort

public static void sort(Object[] source,
                        SortDefinition sortDefinition)
                 throws BeansException

Sort the given source according to the given sort definition.

Note: Contained objects have to provide the given property in the form of a bean property, i.e. a getXXX method.

参数:

source - input source

sortDefinition - the parameters to sort by

抛出:

IllegalArgumentException - in case of a missing propertyName

BeansException