net.hasor.dataql.runtime.operator

类 OperatorUtils

java.lang.Object

net.hasor.dataql.runtime.operator.OperatorUtils

public class OperatorUtils
extends Object

数学计算处理工具，提供：加、减、乘、除、整除、求余 尽量考虑在保证性能的前提下不产生精度丢失问题。

版本:

: 2017-03-23

作者:

赵永春 (zyc@hasor.net)

构造器概要

构造器

构造器和说明
OperatorUtils()

方法概要

限定符和类型	方法和说明
static Number	add(Number obj1, Number obj2) 加
static Number	aliquot(Number obj1, Number obj2) 整除
static Number	and(Number obj1, Number obj2) 与
static Number	divide(Number obj1, Number obj2, int precision, RoundingEnum roundingEnum) 除
static boolean	eq(Number obj1, Number obj2) 相等
static Number	fixNumberWidth(Number valNumber, String decimalWidth, String integerWidth)
static int	getNumericType(Object value)
static boolean	gt(Number obj1, Number obj2) 大于
static boolean	gteq(Number obj1, Number obj2) 大于等于
static boolean	isBoolean(Object object)
static boolean	isByteNumber(Object number)
static boolean	isCharacter(Object number)
static boolean	isDecimal(Number tester) 测试是否为一个小数
static boolean	isDoubleNumber(Object number)
static boolean	isFloatNumber(Object number)
static boolean	isIntegerNumber(Object number)
static boolean	isLongNumber(Object number)
static boolean	isNumber(Object object)
static boolean	isShortNumber(Object number)
static boolean	lt(Number obj1, Number obj2) 小于
static boolean	lteq(Number obj1, Number obj2) 小于等于
static Number	mod(Number obj1, Number obj2) 求余
static Number	multiply(Number obj1, Number obj2) 乘
static Number	negate(Number obj) 取反，相当于：value * -1
static Number	or(Number obj1, Number obj2) 或
static Number	shiftLeft(Number obj1, Number obj2) 左位移
static Number	shiftRight(Number obj1, Number obj2) 右位移
static Number	shiftRightWithUnsigned(Number obj1, Number obj2) 无符号右位移
static Number	subtract(Number obj1, Number obj2) 减
static Number	xor(Number obj1, Number obj2) 异或

从类继承的方法 java.lang.Object

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

构造器详细资料

OperatorUtils

public OperatorUtils()

方法详细资料

isNumber

public static boolean isNumber(Object object)

isBoolean

public static boolean isBoolean(Object object)

isByteNumber

public static boolean isByteNumber(Object number)

isShortNumber

public static boolean isShortNumber(Object number)

isIntegerNumber

public static boolean isIntegerNumber(Object number)

isCharacter

public static boolean isCharacter(Object number)

isLongNumber

public static boolean isLongNumber(Object number)

isFloatNumber

public static boolean isFloatNumber(Object number)

isDoubleNumber

public static boolean isDoubleNumber(Object number)

fixNumberWidth

public static Number fixNumberWidth(Number valNumber,
                                    String decimalWidth,
                                    String integerWidth)

getNumericType

public static int getNumericType(Object value)

add

public static Number add(Number obj1,
                         Number obj2)

加

subtract

public static Number subtract(Number obj1,
                              Number obj2)

减

multiply

public static Number multiply(Number obj1,
                              Number obj2)

乘

divide

public static Number divide(Number obj1,
                            Number obj2,
                            int precision,
                            RoundingEnum roundingEnum)

除

aliquot

public static Number aliquot(Number obj1,
                             Number obj2)

整除

mod

public static Number mod(Number obj1,
                         Number obj2)

求余

negate

public static Number negate(Number obj)

取反，相当于：value * -1

isDecimal

public static boolean isDecimal(Number tester)

测试是否为一个小数

eq

public static boolean eq(Number obj1,
                         Number obj2)

相等

gt

public static boolean gt(Number obj1,
                         Number obj2)

大于

gteq

public static boolean gteq(Number obj1,
                           Number obj2)

大于等于

lt

public static boolean lt(Number obj1,
                         Number obj2)

小于

lteq

public static boolean lteq(Number obj1,
                           Number obj2)

小于等于

and

public static Number and(Number obj1,
                         Number obj2)

与

or

public static Number or(Number obj1,
                        Number obj2)

或

xor

public static Number xor(Number obj1,
                         Number obj2)

异或

shiftLeft

public static Number shiftLeft(Number obj1,
                               Number obj2)

左位移

shiftRight

public static Number shiftRight(Number obj1,
                                Number obj2)

右位移

shiftRightWithUnsigned

public static Number shiftRightWithUnsigned(Number obj1,
                                            Number obj2)

无符号右位移