javax.faces.validator

Class RequiredValidator

java.lang.Object

javax.faces.validator.RequiredValidator

All Implemented Interfaces:

EventListener, Validator

public class RequiredValidator
extends 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

Fields

Modifier and Type	Field and Description
static 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

Constructors

Constructor and Description
RequiredValidator()

Method Summary

Modifier and Type	Method and Description
void	validate(FacesContext context, UIComponent component, 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 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,
                     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