org.apache.commons.validator.routines

Class FloatValidator

Implemented Interfaces:
Serializable

public class FloatValidator
extends AbstractNumberValidator

Float Validation and Conversion routines (java.lang.Float).

This validator provides a number of methods for validating/converting a String value to a Float using java.text.NumberFormat to parse either:

Use one of the isValid() methods to just validate or one of the validate() methods to validate and receive a converted Float value.

Once a value has been sucessfully converted the following methods can be used to perform minimum, maximum and range checks:

So that the same mechanism used for parsing an input value for validation can be used to format output, corresponding format() methods are also provided. That is you can format either:

Version:
$Revision: 386637 $ $Date: 2006-03-17 13:22:26 +0000 (Fri, 17 Mar 2006) $
Since:
Validator 1.3.0

Field Summary

private static FloatValidator
VALIDATOR

Fields inherited from class org.apache.commons.validator.routines.AbstractNumberValidator

CURRENCY_FORMAT, PERCENT_FORMAT, STANDARD_FORMAT, allowFractions, formatType

Fields inherited from class org.apache.commons.validator.routines.AbstractFormatValidator

strict

Constructor Summary

FloatValidator()
Construct a strict instance.
FloatValidator(boolean strict, int formatType)
Construct an instance with the specified strict setting and format type.

Method Summary

static FloatValidator
getInstance()
Return a singleton instance of this validator.
boolean
isInRange(Float value, float min, float max)
Check if the value is within a specified range.
boolean
isInRange(float value, float min, float max)
Check if the value is within a specified range.
boolean
maxValue(Float value, float max)
Check if the value is less than or equal to a maximum.
boolean
maxValue(float value, float max)
Check if the value is less than or equal to a maximum.
boolean
minValue(Float value, float min)
Check if the value is greater than or equal to a minimum.
boolean
minValue(float value, float min)
Check if the value is greater than or equal to a minimum.
protected Object
processParsedValue(Object value, Format formatter)
Perform further validation and convert the Number to a Float.
Float
validate(String value)
Validate/convert a Float using the default Locale.
Float
validate(String value, Locale locale)
Validate/convert a Float using the specified Locale.
Float
validate(String value, String pattern)
Validate/convert a Float using the specified pattern.
Float
validate(String value, String pattern, Locale locale)
Validate/convert a Float using the specified pattern and/ or Locale.

Methods inherited from class org.apache.commons.validator.routines.AbstractNumberValidator

determineScale, getFormat, getFormat, getFormatType, isAllowFractions, isInRange, isValid, maxValue, minValue, parse, processParsedValue

Methods inherited from class org.apache.commons.validator.routines.AbstractFormatValidator

format, format, format, format, format, getFormat, isStrict, isValid, isValid, isValid, isValid, parse, processParsedValue

Field Details

VALIDATOR

private static final FloatValidator VALIDATOR

Constructor Details

FloatValidator

public FloatValidator()
Construct a strict instance.

FloatValidator

public FloatValidator(boolean strict,
                      int formatType)
Construct an instance with the specified strict setting and format type.

The formatType specified what type of NumberFormat is created - valid types are:

  • AbstractNumberValidator.STANDARD_FORMAT -to create standard number formats (the default).
  • AbstractNumberValidator.CURRENCY_FORMAT -to create currency number formats.
  • AbstractNumberValidator.PERCENT_FORMAT -to create percent number formats (the default).
Parameters:
strict - true if strict Format parsing should be used.
formatType - The NumberFormat type to create for validation, default is STANDARD_FORMAT.

Method Details

getInstance

public static FloatValidator getInstance()
Return a singleton instance of this validator.
Returns:
A singleton instance of the FloatValidator.

isInRange

public boolean isInRange(Float value,
                         float min,
                         float max)
Check if the value is within a specified range.
Parameters:
value - The Number value to check.
min - The minimum value of the range.
max - The maximum value of the range.
Returns:
true if the value is within the specified range.

isInRange

public boolean isInRange(float value,
                         float min,
                         float max)
Check if the value is within a specified range.
Parameters:
value - The Number value to check.
min - The minimum value of the range.
max - The maximum value of the range.
Returns:
true if the value is within the specified range.

maxValue

public boolean maxValue(Float value,
                        float max)
Check if the value is less than or equal to a maximum.
Parameters:
value - The value validation is being performed on.
max - The maximum value.
Returns:
true if the value is less than or equal to the maximum.

maxValue

public boolean maxValue(float value,
                        float max)
Check if the value is less than or equal to a maximum.
Parameters:
value - The value validation is being performed on.
max - The maximum value.
Returns:
true if the value is less than or equal to the maximum.

minValue

public boolean minValue(Float value,
                        float min)
Check if the value is greater than or equal to a minimum.
Parameters:
value - The value validation is being performed on.
min - The minimum value.
Returns:
true if the value is greater than or equal to the minimum.

minValue

public boolean minValue(float value,
                        float min)
Check if the value is greater than or equal to a minimum.
Parameters:
value - The value validation is being performed on.
min - The minimum value.
Returns:
true if the value is greater than or equal to the minimum.

processParsedValue

protected Object processParsedValue(Object value,
                                    Format formatter)
Perform further validation and convert the Number to a Float.
Overrides:
processParsedValue in interface AbstractNumberValidator
Parameters:
value - The parsed Number object created.
formatter - The Format used to parse the value with.
Returns:
The parsed Number converted to a Float if valid or null if invalid.

validate

public Float validate(String value)
Validate/convert a Float using the default Locale.
Parameters:
value - The value validation is being performed on.
Returns:
The parsed Float if valid or null if invalid.

validate

public Float validate(String value,
                      Locale locale)
Validate/convert a Float using the specified Locale.
Parameters:
value - The value validation is being performed on.
locale - The locale to use for the number format, system default if null.
Returns:
The parsed Float if valid or null if invalid.

validate

public Float validate(String value,
                      String pattern)
Validate/convert a Float using the specified pattern.
Parameters:
value - The value validation is being performed on.
pattern - The pattern used to validate the value against.
Returns:
The parsed Float if valid or null if invalid.

validate

public Float validate(String value,
                      String pattern,
                      Locale locale)
Validate/convert a Float using the specified pattern and/ or Locale.
Parameters:
value - The value validation is being performed on.
pattern - The pattern used to validate the value against, or the default for the Locale if null.
locale - The locale to use for the date format, system default if null.
Returns:
The parsed Float if valid or null if invalid.

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