org.springframework.data.hazelcast.repository.query

Class HazelcastPropertyComparator

java.lang.Object

org.springframework.data.hazelcast.repository.query.HazelcastPropertyComparator

All Implemented Interfaces:

Serializable, Comparator<Map.Entry<?,?>>

public class HazelcastPropertyComparator
extends Object
implements Comparator<Map.Entry<?,?>>, Serializable

Implement a limited form of custom comparison between entries. The fields used for the comparison and the ascending/descending can be specified at run time.

Author:

Neil Stevenson

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
HazelcastPropertyComparator(String attributeName, boolean ascending)

Method Summary

Modifier and Type	Method and Description
int	compare(Map.Entry<?,?> o1, Map.Entry<?,?> o2) Use Hazelcast's ReflectionHelper to extract a field in an entry, and use this is in the comparison.

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

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

Constructor Detail

HazelcastPropertyComparator

public HazelcastPropertyComparator(String attributeName,
                                   boolean ascending)

Method Detail

compare

public int compare(Map.Entry<?,?> o1,
                   Map.Entry<?,?> o2)

Use Hazelcast's ReflectionHelper to extract a field in an entry, and use this is in the comparison.

Specified by:

compare in interface Comparator<Map.Entry<?,?>>

Parameters:

o1 - An entry in a map

o2 - Another entry in the map

Returns:

Comparison result