org.apache.commons.validator.routines

Class IntegerValidator

java.lang.Object

org.apache.commons.validator.routines.AbstractFormatValidator

org.apache.commons.validator.routines.AbstractNumberValidator

org.apache.commons.validator.routines.IntegerValidator

All Implemented Interfaces:

Serializable

public class IntegerValidator
extends AbstractNumberValidator

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

This validator provides a number of methods for validating/converting a String value to a Integer 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 Integer 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:

$Revision$

See Also:

Serialized Form

Field Summary

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

CURRENCY_FORMAT, PERCENT_FORMAT, STANDARD_FORMAT

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
static IntegerValidator	getInstance() Return a singleton instance of this validator.
boolean	isInRange(Integer value, int min, int max) Check if the value is within a specified range.
boolean	isInRange(int value, int min, int max) Check if the value is within a specified range.
boolean	maxValue(Integer value, int max) Check if the value is less than or equal to a maximum.
boolean	maxValue(int value, int max) Check if the value is less than or equal to a maximum.
boolean	minValue(Integer value, int min) Check if the value is greater than or equal to a minimum.
boolean	minValue(int value, int 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 an Integer.
Integer	validate(String value) Validate/convert an Integer using the default Locale.
Integer	validate(String value, Locale locale) Validate/convert an Integer using the specified Locale.
Integer	validate(String value, String pattern) Validate/convert an Integer using the specified pattern.
Integer	validate(String value, String pattern, Locale locale) Validate/convert a Integer 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

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

Constructor Detail

IntegerValidator

public IntegerValidator()

Construct a strict instance.

IntegerValidator

public IntegerValidator(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 IntegerValidator getInstance()

Return a singleton instance of this validator.

Returns:

A singleton instance of the IntegerValidator.

validate

public Integer validate(String value)

Validate/convert an Integer using the default Locale.

Parameters:

value - The value validation is being performed on.

Returns:

The parsed Integer if valid or null if invalid.

validate

public Integer validate(String value,
                        String pattern)

Validate/convert an Integer 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 Integer if valid or null if invalid.

validate

public Integer validate(String value,
                        Locale locale)

Validate/convert an Integer 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 Integer if valid or null if invalid.

validate

public Integer validate(String value,
                        String pattern,
                        Locale locale)

Validate/convert a Integer 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 Integer if valid or null if invalid.

isInRange

public boolean isInRange(int value,
                         int min,
                         int 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(Integer value,
                         int min,
                         int 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(int value,
                        int 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(Integer value,
                        int 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(int value,
                        int 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(Integer value,
                        int 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 Object processParsedValue(Object value,
                                    Format formatter)

Perform further validation and convert the Number to an Integer.

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 an Integer if valid or null if invalid.