com.opensymphony.xwork2.validator.validators
Class RequiredFieldValidator

java.lang.Object
  com.opensymphony.xwork2.validator.validators.ValidatorSupport
      com.opensymphony.xwork2.validator.validators.FieldValidatorSupport
          com.opensymphony.xwork2.validator.validators.RequiredFieldValidator

All Implemented Interfaces:

FieldValidator, ShortCircuitableValidator, Validator

public class RequiredFieldValidator
extends FieldValidatorSupport

RequiredFieldValidator checks if the specified field is not null.

• fieldName - field name if plain-validator syntax is used, not needed if field-validator syntax is used

 
           <validators>
 
         <!-- Plain Validator Syntax -->
         <validator type="required">
             <param name="fieldName">username</param>
             <message>username must not be null</message>
         </validator>
 
 
         <!-- Field Validator Syntax -->
         <field name="username">
             <field-validator type="required">
                   <message>username must not be null</message>
             </field-validator>
         </field>
 
     </validators>
 
 

Version:

$Revision: 1063 $

Author:

rainerh

Field Summary

Fields inherited from class com.opensymphony.xwork2.validator.validators.ValidatorSupport

defaultMessage, log, messageKey

Constructor Summary

RequiredFieldValidator()

Method Summary

void	validate(Object object) The validation implementation must guarantee that setValidatorContext will be called with a non-null ValidatorContext before validate is called.

Methods inherited from class com.opensymphony.xwork2.validator.validators.FieldValidatorSupport

getFieldName, getValidatorType, setFieldName, setValidatorType

Methods inherited from class com.opensymphony.xwork2.validator.validators.ValidatorSupport

addActionError, addFieldError, conditionalParse, getDefaultMessage, getFieldValue, getMessage, getMessageKey, getParse, getValidatorContext, isShortCircuit, setDefaultMessage, setMessageKey, setParse, setShortCircuit, setValidatorContext, setValueStack

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.opensymphony.xwork2.validator.Validator

getDefaultMessage, getMessage, getMessageKey, getValidatorContext, setDefaultMessage, setMessageKey, setValidatorContext, setValueStack

Constructor Detail

RequiredFieldValidator

public RequiredFieldValidator()

Method Detail

validate

public void validate(Object object)
              throws ValidationException

Description copied from interface: Validator

The validation implementation must guarantee that setValidatorContext will be called with a non-null ValidatorContext before validate is called.

Parameters:

object - the object to be validated.

Throws:

ValidationException - is thrown if there is validation error(s).