org.fopps.model
Class MinMaxValidator

java.lang.Object
  |
  +--org.fopps.model.MinMaxValidator

All Implemented Interfaces:

Validator

public class MinMaxValidator

extends java.lang.Object

implements Validator

Validator which check aginst min/max range.

Author:

Oliver Wieland

Field Summary

static java.lang.Class[]

COMPARE_TO_PARAMETERS

Constructor Summary

MinMaxValidator(java.lang.Class pClass)
Creates a new min/max validator by a class instance.

MinMaxValidator(java.lang.Number min, java.lang.Number max)
Creates a new min/max validator.

Method Summary

boolean	check(java.lang.Number pNumber) Checks given value agaisnt the validator's rules.
static int	compareTo(java.lang.Number a, java.lang.Number b) Invokes compareTo on two numbers.
java.lang.Number	firstValue() Returns the first valid number of the validator.
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

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

Field Detail

COMPARE_TO_PARAMETERS

public static java.lang.Class[] COMPARE_TO_PARAMETERS

Constructor Detail

MinMaxValidator

public MinMaxValidator(java.lang.Number min,
                       java.lang.Number max)
                throws ValidatorException

Creates a new min/max validator. Both values must have same type. Minimum or maximum may be null, but not both.

MinMaxValidator

public MinMaxValidator(java.lang.Class pClass)
                throws ValidatorException

Creates a new min/max validator by a class instance. Min/max corresponds to the domain ranges of the given class.

Example: new MinMaxValidator(Byte.class) is equal to new MinMaxValidator(new Byte(Byte.MIN_VALUE), new Byte(Byte.MAX_VALUE)))

Parameters:

pClass - Class to use for min/max. Must be a subclass of Number.

Throws:

ValidatorException, - if argument does not denote a valid class

ValidatorException

Method Detail

check

public boolean check(java.lang.Number pNumber)
              throws ValidatorException

Checks given value agaisnt the validator's rules.

Specified by:

check in interface Validator

Throws:

ValidatorException, - if value is invalid

ValidatorException

firstValue

public java.lang.Number firstValue()

Returns the first valid number of the validator. This is useful to set an initial value.

Specified by:

firstValue in interface Validator

compareTo

public static int compareTo(java.lang.Number a,
                            java.lang.Number b)
                     throws java.lang.Exception

Invokes compareTo on two numbers. This is necessary since Number does not implement Comparable

Returns:

0, if one or both instances are null or the result of a.compareTo(b).

java.lang.Exception

See Also:

Comparable.compareTo(Object)

main

public static void main(java.lang.String[] args)