com.viaoa.util.converter

Class OAConverterNumber

java.lang.Object

com.viaoa.util.converter.OAConverterNumber

All Implemented Interfaces:

OAConverterInterface

Direct Known Subclasses:

OAConverterBigDecimal

public class OAConverterNumber
extends Object
implements OAConverterInterface

Convert to/from a Number value.
Converting the following to a Number

• null returns a number with value = 0
• Any type of Number
• String, using an optional format.
• Color
• Character
• Boolean
• Rectangle by encoding x,y,w,h in 16bit positions (64 bits required).
• All others value will return null.

Converting a Number to any of the following

• String, using an optional format.

Format String Symbol Meaning (same as DecimalFormat)

    0      a digit, if no digit exists, then '0' will be used. 
                ex: '000' for 38 = '038'
    #      a digit, zero shows as absent
                ex: '#' for 8204 = '8204'
    .      placeholder for decimal separator
    ,      placeholder for grouping separator.
    ;      separates formats.
    -      default negative prefix.
    %      multiply by 100 and show as percentage
    (‰) � multiply by 1000 and show as per mille
    (¤) � currency sign; replaced by currency symbol; if
            doubled, replaced by international currency symbol.
            If present in a pattern, the monetary decimal separator
            is used instead of the decimal separator.
    X      any other characters can be used in the prefix or suffix
    '      used to quote special characters in a prefix or suffix.
    
    Examples:
    IntegerFormat     = #,###
    DecimalFormat     = #,##0.00
    MoneyFormat       = ¤#,##0.00
    BooleanFormat     = true;false;null
    
    ALSO** support for OAString.format 
    
    

NOTE: this also does rounding when digits are truncated.

See Also:

OAConverter, OAString.format(double, String)

Field Summary

Fields

Modifier and Type	Field and Description
protected Vector	vec

Constructor Summary

Constructors

Constructor and Description
OAConverterNumber()

Method Summary

Modifier and Type	Method and Description
Object	convert(Class clazz, Object value, String fmt) Convert to/from a Number value.
protected Object	convertFromNumber(Class toClass, Number numValue, String fmt)
protected Number	convertToNumber(Class clazz, Object value, String fmt) Returns Number subclass to match clazz parameter, 0 if value is null, or null if it can not be parsed.
protected com.viaoa.util.converter.OAConverterNumber.FormatPool	getFormatter(String fmt)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Field Detail

vec

protected Vector vec

Constructor Detail

OAConverterNumber

public OAConverterNumber()

Method Detail

convert

public Object convert(Class clazz,
                      Object value,
                      String fmt)

Convert to/from a Number value.

Specified by:

convert in interface OAConverterInterface

Returns:

Object of type clazz if conversion can be done, else null.

convertToNumber

protected Number convertToNumber(Class clazz,
                                 Object value,
                                 String fmt)

Returns Number subclass to match clazz parameter, 0 if value is null, or null if it can not be parsed.

getFormatter

protected com.viaoa.util.converter.OAConverterNumber.FormatPool getFormatter(String fmt)

convertFromNumber

protected Object convertFromNumber(Class toClass,
                                   Number numValue,
                                   String fmt)

main

public static void main(String[] args)