Package org.springframework.data.keyvalue.core

Class PropertyPathComparator<T>

java.lang.Object

org.springframework.data.keyvalue.core.PropertyPathComparator<T>

All Implemented Interfaces:

Comparator<T>

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

Comparator implementation to compare objects based on a PropertyPath. This comparator obtains the value at PropertyPath from the given comparison objects and then performs the comparison.

Since:

3.1.10

Author:

Christoph Strobl, Mark Paluch

Constructor Summary

Constructors

Constructor	Description
PropertyPathComparator(String path)

Method Summary

Modifier and Type	Method	Description
PropertyPathComparator<T>	asc()	Sort ascending.
int	compare(T o1, T o2)
PropertyPathComparator<T>	desc()	Sort descending.
protected <T> Object	getCompareValue(T object, PropertyPath propertyPath)
PropertyPathComparator<T>	nullsFirst()	Sort null values first.
PropertyPathComparator<T>	nullsLast()	Sort null values last.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

PropertyPathComparator

public PropertyPathComparator(String path)

Method Details

compare

public int compare(@Nullable
 T o1,
 @Nullable
 T o2)

Specified by:

compare in interface Comparator<T>

getCompareValue

protected <T> Object getCompareValue(T object,
 PropertyPath propertyPath)

asc

public PropertyPathComparator<T> asc()

Sort ascending.

Returns:

desc

public PropertyPathComparator<T> desc()

Sort descending.

Returns:

nullsFirst

public PropertyPathComparator<T> nullsFirst()

Sort null values first.

Returns:

nullsLast

public PropertyPathComparator<T> nullsLast()

Sort null values last.

Returns: