org.apache.commons.validator.routines

Class FloatValidator

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:

Since: Validator 1.3.0

Version: $Revision: 478334 $ $Date: 2006-11-22 21:31:54 +0000 (Wed, 22 Nov 2006) $

Field Summary
static FloatValidatorVALIDATOR
Constructor Summary
FloatValidator()
Construct a strict instance.
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).
Method Summary
static FloatValidatorgetInstance()
Return a singleton instance of this validator.
booleanisInRange(float value, float min, float max)
Check if the value is within a specified range.
booleanisInRange(Float value, float min, float max)
Check if the value is within a specified range.
booleanmaxValue(float value, float max)
Check if the value is less than or equal to a maximum.
booleanmaxValue(Float value, float max)
Check if the value is less than or equal to a maximum.
booleanminValue(float value, float min)
Check if the value is greater than or equal to a minimum.
booleanminValue(Float value, float min)
Check if the value is greater than or equal to a minimum.
protected ObjectprocessParsedValue(Object value, Format formatter)

Perform further validation and convert the Number to a Float.

Floatvalidate(String value)

Validate/convert a Float using the default Locale.

Floatvalidate(String value, String pattern)

Validate/convert a Float using the specified pattern.

Floatvalidate(String value, Locale locale)

Validate/convert a Float using the specified Locale.

Floatvalidate(String value, String pattern, Locale locale)

Validate/convert a Float using the specified pattern and/ or Locale.

Field Detail

VALIDATOR

private static final FloatValidator VALIDATOR

Constructor Detail

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:

Parameters: strict true if strict Format parsing should be used. formatType The NumberFormat type to create for validation, default is STANDARD_FORMAT.

Method Detail

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.

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, 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, 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, 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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