public class PercentValidator extends BigDecimalValidator
Percentage Validation and Conversion routines (java.math.BigDecimal
).
This is one implementation of a percent validator that has the following features:
java.math.BigDecimal
However any of the number validators can be used for percent validation.
For example, if you wanted a percent validator that converts to a
java.lang.Float
then you can simply instantiate an
FloatValidator
with the appropriate format type:
... = new FloatValidator(false, FloatValidator.PERCENT_FORMAT);
Pick the appropriate validator, depending on the type (i.e Float, Double or BigDecimal)
you want the percent converted to. Please note, it makes no sense to use
one of the validators that doesn't handle fractions (i.e. byte, short, integer, long
and BigInteger) since percentages are converted to fractions (i.e 50%
is
converted to 0.5
).
Modifier and Type | Field | Description |
---|---|---|
private static char |
PERCENT_SYMBOL |
DecimalFormat's percent (thousand multiplier) symbol
|
private static java.math.BigDecimal |
POINT_ZERO_ONE |
|
private static PercentValidator |
VALIDATOR |
CURRENCY_FORMAT, PERCENT_FORMAT, STANDARD_FORMAT
Constructor | Description |
---|---|
PercentValidator() |
Construct a strict instance.
|
PercentValidator(boolean strict) |
Construct an instance with the specified strict setting.
|
Modifier and Type | Method | Description |
---|---|---|
static BigDecimalValidator |
getInstance() |
Return a singleton instance of this validator.
|
protected java.lang.Object |
parse(java.lang.String value,
java.text.Format formatter) |
Parse the value with the specified
Format . |
format, format, format, format, format, isStrict, isValid, isValid, isValid
determineScale, getFormat, getFormat, getFormatType, isAllowFractions, isInRange, isValid, maxValue, minValue, parse
isInRange, maxValue, minValue, processParsedValue, validate, validate, validate, validate
private static final PercentValidator VALIDATOR
private static final char PERCENT_SYMBOL
private static final java.math.BigDecimal POINT_ZERO_ONE
public PercentValidator()
public PercentValidator(boolean strict)
strict
- true
if strict
Format
parsing should be used.public static BigDecimalValidator getInstance()
protected java.lang.Object parse(java.lang.String value, java.text.Format formatter)
Parse the value with the specified Format
.
This implementation is lenient whether the currency symbol
is present or not. The default NumberFormat
behaviour is for the parsing to "fail" if the currency
symbol is missing. This method re-parses with a format
without the currency symbol if it fails initially.
parse
in class AbstractFormatValidator
value
- The value to be parsed.formatter
- The Format to parse the value with.null
if invalid.Copyright (c) 2001-2004 Apache Software Foundation