com.vaadin.data
Interface Validator

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

AbstractStringValidator, AbstractValidator, BeanValidator, BigDecimalRangeValidator, BigIntegerRangeValidator, ByteRangeValidator, CompositeValidator, DateRangeValidator, DoubleRangeValidator, DoubleValidator, EmailValidator, FloatRangeValidator, IntegerRangeValidator, IntegerValidator, LongRangeValidator, NullValidator, RangeValidator, RegexpValidator, ShortRangeValidator, StringLengthValidator

public interface Validator
extends java.io.Serializable

Interface that implements a method for validating if an Object is valid or not.

Implementors of this class can be added to any Validatable implementor to verify its value.

validate(Object) can be used to check if a value is valid. An Validator.InvalidValueException with an appropriate validation error message is thrown if the value is not valid.

Validators must not have any side effects.

Since Vaadin 7, the method isValid(Object) does not exist in the interface - validate(Object) should be used instead, and the exception caught where applicable. Concrete classes implementing Validator can still internally implement and use isValid(Object) for convenience or to ease migration from earlier Vaadin versions.

Since:

3.0

Author:

Vaadin Ltd.

Nested Class Summary

static class	Validator.EmptyValueException A specific type of Validator.InvalidValueException that indicates that validation failed because the value was empty.
static class	Validator.InvalidValueException Exception that is thrown by a Validator when a value is invalid.

Method Summary

void	validate(java.lang.Object value) Checks the given value against this validator.

Method Detail

validate

void validate(java.lang.Object value)
              throws Validator.InvalidValueException

Checks the given value against this validator. If the value is valid the method does nothing. If the value is invalid, an Validator.InvalidValueException is thrown.

Parameters:

value - the value to check

Throws:

Validator.InvalidValueException - if the value is invalid