org.apache.tinkerpop.gremlin.util

Class NumberHelper

java.lang.Object

org.apache.tinkerpop.gremlin.util.NumberHelper

public final class NumberHelper
extends Object

Author:

Daniel Kuppitz (http://gremlin.guru)

Field Summary

Fields

Modifier and Type	Field and Description
BiFunction<Number,Number,Number>	add
BiFunction<Number,Number,Integer>	cmp
BiFunction<Number,Number,Number>	div
BiFunction<Number,Number,Number>	max
BiFunction<Number,Number,Number>	min
BiFunction<Number,Number,Number>	mul
BiFunction<Number,Number,Number>	sub

Method Summary

Modifier and Type	Method and Description
static Number	add(Number a, Number b) Adds two numbers returning the highest common number class between them.
static Integer	compare(Number a, Number b) Compares two numbers.
static Number	div(Number a, Number b) Divides two numbers returning the highest common number class between them calling div(Number, Number, boolean) with a false.
static Number	div(Number a, Number b, boolean forceFloatingPoint) Divides two numbers returning the highest common number class between them.
static Class<? extends Number>	getHighestCommonNumberClass(boolean forceFloatingPoint, Number... numbers)
static Class<? extends Number>	getHighestCommonNumberClass(Number... numbers)
static Comparable	max(Comparable a, Comparable b) Gets the larger number of the two provided returning the highest common number class between them.
static Number	max(Number a, Number b) Gets the larger number of the two provided returning the highest common number class between them.
static Comparable	min(Comparable a, Comparable b) Gets the smaller number of the two provided returning the highest common number class between them.
static Number	min(Number a, Number b) Gets the smaller number of the two provided returning the highest common number class between them.
static Number	mul(Number a, Number b) Multiplies two numbers returning the highest common number class between them.
static Number	sub(Number a, Number b) Subtracts two numbers returning the highest common number class between them.

Methods inherited from class java.lang.Object

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

Field Detail

add

public final BiFunction<Number,Number,Number> add

sub

public final BiFunction<Number,Number,Number> sub

mul

public final BiFunction<Number,Number,Number> mul

div

public final BiFunction<Number,Number,Number> div

min

public final BiFunction<Number,Number,Number> min

max

public final BiFunction<Number,Number,Number> max

cmp

public final BiFunction<Number,Number,Integer> cmp

Method Detail

getHighestCommonNumberClass

public static Class<? extends Number> getHighestCommonNumberClass(Number... numbers)

getHighestCommonNumberClass

public static Class<? extends Number> getHighestCommonNumberClass(boolean forceFloatingPoint,
                                                                  Number... numbers)

add

public static Number add(Number a,
                         Number b)

Adds two numbers returning the highest common number class between them.

     a = 1, b = 1 -> 2
     a = null, b = 1 -> null
     a = 1, b = null -> 1
     a = null, b = null -> null
 

Parameters:

a - should be thought of as the seed to be modified by b

b - the modifier to {code a}

sub

public static Number sub(Number a,
                         Number b)

Subtracts two numbers returning the highest common number class between them.

     a = 1, b = 1 -> 0
     a = null, b = 1 -> null
     a = 1, b = null -> 1
     a = null, b = null -> null
 

Parameters:

a - should be thought of as the seed to be modified by b

b - the modifier to {code a}

mul

public static Number mul(Number a,
                         Number b)

Multiplies two numbers returning the highest common number class between them.

     a = 1, b = 2 -> 2
     a = null, b = 1 -> null
     a = 1, b = null -> 1
     a = null, b = null -> null
 

Parameters:

a - should be thought of as the seed to be modified by b

b - the modifier to {code a}

div

public static Number div(Number a,
                         Number b)

Divides two numbers returning the highest common number class between them calling div(Number, Number, boolean) with a false.

div

public static Number div(Number a,
                         Number b,
                         boolean forceFloatingPoint)

Divides two numbers returning the highest common number class between them.

     a = 4, b = 2 -> 2
     a = null, b = 1 -> null
     a = 1, b = null -> 1
     a = null, b = null -> null
 

Parameters:

a - should be thought of as the seed to be modified by b

b - the modifier to {code a}

forceFloatingPoint - when set to true ensures that the return value is the highest common floating number class

min

public static Number min(Number a,
                         Number b)

Gets the smaller number of the two provided returning the highest common number class between them.

     a = 4, b = 2 -> 2
     a = null, b = 1 -> 1
     a = 1, b = null -> 1
     a = null, b = null -> null
 

min

public static Comparable min(Comparable a,
                             Comparable b)

Gets the smaller number of the two provided returning the highest common number class between them.

     a = 4, b = 2 -> 2
     a = null, b = 1 -> 1
     a = 1, b = null -> 1
     a = null, b = null -> null
 

max

public static Number max(Number a,
                         Number b)

Gets the larger number of the two provided returning the highest common number class between them.

     a = 4, b = 2 -> 4
     a = null, b = 1 -> 1
     a = 1, b = null -> 1
     a = null, b = null -> null
 

max

public static Comparable max(Comparable a,
                             Comparable b)

Gets the larger number of the two provided returning the highest common number class between them.

     a = 4, b = 2 -> 4
     a = null, b = 1 -> 1
     a = 1, b = null -> 1
     a = null, b = null -> null
 

compare

public static Integer compare(Number a,
                              Number b)

Compares two numbers.

     a = 4, b = 2 -> 1
     a = 2, b = 4 -> -1
     a = null, b = 1 -> -1
     a = 1, b = null -> 1
     a = null, b = null -> 0