js.converter

Class NumbersConverter

java.lang.Object

js.converter.NumbersConverter

All Implemented Interfaces:

Converter

final class NumbersConverter
extends Object
implements Converter

Numerical values converter. Convert numbers to string and vice versa. Number string representation is that described by JSON specifications as it is generic enough to cover all practical needs.

Version:

final

Author:

Iulian Rotaru

Constructor Summary

Constructors

Constructor and Description
NumbersConverter() Package default converter.

Method Summary

Modifier and Type	Method and Description
<T> T	asObject(String string, Class<T> valueType) Convert a string to a number of given type.
String	asString(Object object) Get number string representation.
private Number	parseNumber(String string) Parse numeric string value to a number.

Methods inherited from class java.lang.Object

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

Constructor Detail

NumbersConverter

NumbersConverter()

Package default converter.

Method Detail

asObject

public <T> T asObject(String string,
                      Class<T> valueType)
               throws BugError

Convert a string to a number of given type. If given string can't be stored into required type silent rounding is applied. If given string is empty return 0 since it is considered as an optional numeric input.

Specified by:

asObject in interface Converter

Type Parameters:

T - instance type.

Parameters:

string - instance string representation, possible null or empty,

valueType - expected value type, null not accepted.

Returns:

newly created instance of requested type, null if string argument is null.

Throws:

BugError - if value type is not supported.

parseNumber

private Number parseNumber(String string)

Parse numeric string value to a number.

Parameters:

string - numeric string value.

Returns:

number instance.

asString

public String asString(Object object)

Get number string representation.

Specified by:

asString in interface Converter

Parameters:

object - value type instance, possible null.

Returns:

string representation of given value type instance or null.