org.codehaus.groovy.grails.validation
Class ScaleConstraint

java.lang.Object
  org.codehaus.groovy.grails.validation.AbstractConstraint
      org.codehaus.groovy.grails.validation.ScaleConstraint

All Implemented Interfaces:

Constraint, MessageSourceAware

public class ScaleConstraint
extends AbstractConstraint

A constraint to manage the scale for floating point numbers (i.e., the number of digits to the right of the decimal point). This constraint supports properties of the following types:

• java.lang.Float
• java.lang.Double
• java.math.BigDecimal (and its subclasses)

When applied, this constraint determines if the number includes more nonzero decimal places than the scale permits. If so, it rounds the number to the maximum number of decimal places allowed by the scale. The rounding behavior described above occurs automatically when the constraint is applied. This constraint does not generate validation errors.

Since:

0.4

Author:

Jason Rudolph

Field Summary

Fields inherited from class org.codehaus.groovy.grails.validation.AbstractConstraint

classShortName, constraintOwningClass, constraintParameter, constraintPropertyName, messageSource

Constructor Summary

ScaleConstraint()

Method Summary

String	getName()
int	getScale()
protected void	processValidate(Object target, Object propertyValue, Errors errors)
void	setParameter(Object constraintParameter) The parameter which the constraint is validated against
boolean	supports(Class type) Returns whether the constraint supports being applied against the specified type;

Methods inherited from class org.codehaus.groovy.grails.validation.AbstractConstraint

checkState, getDefaultMessage, getPropertyName, rejectValue, rejectValue, rejectValue, rejectValue, rejectValue, rejectValueWithDefaultMessage, setMessageSource, setOwningClass, setPropertyName, skipBlankValues, skipNullValues, toString, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

ScaleConstraint

public ScaleConstraint()

Method Detail

supports

public boolean supports(Class type)

Description copied from interface: Constraint

Returns whether the constraint supports being applied against the specified type;

Parameters:

type - The type to support

Returns:

True if the constraint can be applied against the specified type

getName

public String getName()

Returns:

The name of the constraint

getScale

public int getScale()

Returns:

the scale

setParameter

public void setParameter(Object constraintParameter)

Description copied from interface: Constraint

The parameter which the constraint is validated against

Specified by:

setParameter in interface Constraint

Overrides:

setParameter in class AbstractConstraint

Parameters:

constraintParameter - The constraintParameter to set.

processValidate

protected void processValidate(Object target,
                               Object propertyValue,
                               Errors errors)

Specified by:

processValidate in class AbstractConstraint

See Also:

AbstractConstraint.processValidate( java.lang.Object, java.lang.Object, org.springframework.validation.Errors)