io.druid.java.util.common.guava

Class Comparators

java.lang.Object

io.druid.java.util.common.guava.Comparators

public class Comparators
extends Object

Constructor Summary

Constructors

Constructor and Description
Comparators()

Method Summary

Modifier and Type	Method and Description
static <T> com.google.common.collect.Ordering<T>	alwaysEqual()
static <T extends Comparable> Comparator<T>	comparable() Deprecated.
static Comparator<org.joda.time.Interval>	intervals() Deprecated.
static Comparator<org.joda.time.Interval>	intervalsByEndThenStart()
static Comparator<org.joda.time.Interval>	intervalsByStartThenEnd()
static <T> Comparator<T>	inverse(Comparator<T> baseComp) This is a "reverse" comparator.
static <T extends Comparable<? super T>> com.google.common.collect.Ordering<T>	naturalNullsFirst()

Methods inherited from class java.lang.Object

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

Constructor Detail

Comparators

public Comparators()

Method Detail

alwaysEqual

public static <T> com.google.common.collect.Ordering<T> alwaysEqual()

naturalNullsFirst

public static <T extends Comparable<? super T>> com.google.common.collect.Ordering<T> naturalNullsFirst()

inverse

public static <T> Comparator<T> inverse(Comparator<T> baseComp)

This is a "reverse" comparator. Positive becomes negative, negative becomes positive and 0 (equal) stays the same. This was poorly named as "inverse" as it's not really inverting a true/false relationship

Type Parameters:

T -

Parameters:

baseComp -

Returns:

comparable

@Deprecated
public static <T extends Comparable> Comparator<T> comparable()

Deprecated.

Use Guava Ordering.natural() instead

Type Parameters:

T -

Returns:

intervals

@Deprecated
public static Comparator<org.joda.time.Interval> intervals()

Deprecated.

intervalsByStartThenEnd

public static Comparator<org.joda.time.Interval> intervalsByStartThenEnd()

intervalsByEndThenStart

public static Comparator<org.joda.time.Interval> intervalsByEndThenStart()