Package org.apache.qpid.server.query.engine.parsing.converter

Class NumberConverter

java.lang.Object

org.apache.qpid.server.query.engine.parsing.converter.NumberConverter

public final class NumberConverter
extends Object

Utility class for numeric conversions

Method Summary

Modifier and Type	Method	Description
static boolean	isNumber(String source)	Checks if string is a number
static Number	narrow(Number number)	Converts Number to the strictest numeric type available in following order: Integer, Long, Double, BigDecimal
static <R> R	narrow(BigDecimal bigDecimal)	Converts BigDecimal to the strictest numeric type available in following order: Integer, Long, Double, BigDecimal
static Double	toDouble(Object value)	Converts object to double
static Long	toLong(Object value)	Converts object to long

Methods inherited from class java.lang.Object

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

Method Detail

toLong

public static Long toLong(Object value)

Converts object to long

Parameters:

value - Object to convert

Returns:

Long instance

toDouble

public static Double toDouble(Object value)

Converts object to double

Parameters:

value - Object to convert

Returns:

Double instance

narrow

public static <R> R narrow(BigDecimal bigDecimal)

Converts BigDecimal to the strictest numeric type available in following order: Integer, Long, Double, BigDecimal

Type Parameters:

R - Return parameter value

Parameters:

bigDecimal - BigDecimal instance

Returns:

Converted value

narrow

public static Number narrow(Number number)

Converts Number to the strictest numeric type available in following order: Integer, Long, Double, BigDecimal

Parameters:

number - Number instance

Returns:

Converted value

isNumber

public static boolean isNumber(String source)

Checks if string is a number

Parameters:

source - String to check

Returns:

True or false