Package org.apache.commons.validator.routines

Class FloatValidator

java.lang.Object

org.apache.commons.validator.routines.AbstractFormatValidator

org.apache.commons.validator.routines.AbstractNumberValidator

org.apache.commons.validator.routines.FloatValidator

All Implemented Interfaces:

java.io.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:

• using the default format for the default Locale
• using a specified pattern with the default Locale
• using the default format for a specified Locale
• using a specified pattern with a specified Locale

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 successfully converted the following methods can be used to perform minimum, maximum and range checks:

• minValue() checks whether the value is greater than or equal to a specified minimum.
• maxValue() checks whether the value is less than or equal to a specified maximum.
• isInRange() checks whether the value is within a specified range of values.

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:

• using the default format for the default Locale
• using a specified pattern with the default Locale
• using the default format for a specified Locale
• using a specified pattern with a specified Locale

Since:

Validator 1.3.0

Version:

$Revision: 1649191 $

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static long	serialVersionUID
private static FloatValidator	VALIDATOR

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

CURRENCY_FORMAT, PERCENT_FORMAT, STANDARD_FORMAT

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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(java.lang.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(java.lang.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(java.lang.Float value, float min)	Check if the value is greater than or equal to a minimum.
protected java.lang.Object	processParsedValue(java.lang.Object value, java.text.Format formatter)	Perform further validation and convert the Number to a Float.
java.lang.Float	validate(java.lang.String value)	Validate/convert a Float using the default Locale.
java.lang.Float	validate(java.lang.String value, java.lang.String pattern)	Validate/convert a Float using the specified pattern.
java.lang.Float	validate(java.lang.String value, java.lang.String pattern, java.util.Locale locale)	Validate/convert a Float using the specified pattern and/ or Locale.
java.lang.Float	validate(java.lang.String value, java.util.Locale locale)	Validate/convert a Float using the specified Locale.

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

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

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

format, format, format, format, format, isStrict, isValid, isValid, isValid, parse

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

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:

• 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 Detail

getInstance

public static FloatValidator getInstance()

Return a singleton instance of this validator.

Returns:

A singleton instance of the FloatValidator.

validate

public java.lang.Float validate(java.lang.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 java.lang.Float validate(java.lang.String value,
                                java.lang.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 java.lang.Float validate(java.lang.String value,
                                java.util.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 java.lang.Float validate(java.lang.String value,
                                java.lang.String pattern,
                                java.util.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.

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(java.lang.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.

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(java.lang.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.

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(java.lang.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.

processParsedValue

protected java.lang.Object processParsedValue(java.lang.Object value,
                                              java.text.Format formatter)

Perform further validation and convert the Number to a Float.

Specified by:

processParsedValue in class 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.