javax.faces.validator
Class RequiredValidator

java.lang.Object
  javax.faces.validator.RequiredValidator

All Implemented Interfaces:

java.util.EventListener, Validator

public class RequiredValidator
extends java.lang.Object
implements Validator

A Validator that checks for an empty value in the same way that UIInput checks for a value. In fact, this validator is equivalent to setting the required attribute on the input component to true.

Since:

2.0

Field Summary

static java.lang.String

VALIDATOR_ID The standard converter id for this converter.

Fields inherited from interface javax.faces.validator.Validator

NOT_IN_RANGE_MESSAGE_ID

Constructor Summary

RequiredValidator()

Method Summary

void	validate(FacesContext context, UIComponent component, java.lang.Object value) Verify that the converted object value is not null.

Methods inherited from class java.lang.Object

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

Field Detail

VALIDATOR_ID

public static final java.lang.String VALIDATOR_ID

The standard converter id for this converter.

See Also:

Constant Field Values

Constructor Detail

RequiredValidator

public RequiredValidator()

Method Detail

validate

public void validate(FacesContext context,
                     UIComponent component,
                     java.lang.Object value)

Verify that the converted object value is not null.

Specified by:

validate in interface Validator

Parameters:

context - FacesContext for the request we are processing

component - UIComponent we are checking for correctness

value - the value to validate

Throws:

ValidatorException - if validation fails