Package org.springframework.webflow.validation

Class ValidationHelper

java.lang.Object

org.springframework.webflow.validation.ValidationHelper

public class ValidationHelper
extends Object

A helper class the encapsulates conventions to invoke validation logic.

Author:

Scott Andrews, Canny Duck, Jeremy Grelle

Constructor Summary

Constructors

Constructor	Description
ValidationHelper(Object model, RequestContext requestContext, String eventId, String modelName, ExpressionParser expressionParser, org.springframework.validation.MessageCodesResolver messageCodesResolver, MappingResults mappingResults)	An alternative constructor that creates an instance of BeanValidationHintResolver.
ValidationHelper(Object model, RequestContext requestContext, String eventId, String modelName, ExpressionParser expressionParser, org.springframework.validation.MessageCodesResolver messageCodesResolver, MappingResults mappingResults, ValidationHintResolver hintResolver)	Create a throwaway validation helper object.

Method Summary

Modifier and Type	Method	Description
void	setValidationHints(Object[] validationHints)	Provide validation hints (e.g.
void	setValidator(org.springframework.validation.Validator validator)	Configure a Validator to apply to the model.
void	validate()	Invoke the validators available by convention.

Methods inherited from class java.lang.Object

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

Constructor Details

ValidationHelper

public ValidationHelper(Object model,
 RequestContext requestContext,
 String eventId,
 String modelName,
 ExpressionParser expressionParser,
 org.springframework.validation.MessageCodesResolver messageCodesResolver,
 MappingResults mappingResults,
 ValidationHintResolver hintResolver)

Create a throwaway validation helper object. Validation is invoked by the validate() method.

Validation methods invoked include a validation method on the model object or a validator bean. The method name on either object is in the form of validate[viewStateId]. A ValidationContext is passed in the method signature along with the model object for validator beans. A MessageContext can be substituted for the ValidationContext.

For example: model.validateEnterBookingDetails(VaticationContext) or context.getBean("modelValidator").validateEnterBookingDetails(model, VaticationContext)

Parameters:

model - the object to validate

requestContext - the context for the request

eventId - the event triggering validation

modelName - the name of the model object

expressionParser - the expression parser

mappingResults - object mapping results

ValidationHelper

public ValidationHelper(Object model,
 RequestContext requestContext,
 String eventId,
 String modelName,
 ExpressionParser expressionParser,
 org.springframework.validation.MessageCodesResolver messageCodesResolver,
 MappingResults mappingResults)

An alternative constructor that creates an instance of BeanValidationHintResolver.

Method Details

setValidator

public void setValidator(org.springframework.validation.Validator validator)

Configure a Validator to apply to the model.

setValidationHints

public void setValidationHints(Object[] validationHints)

Provide validation hints (e.g. JSR-303 validation groups). Note that the constructor automatically detects validation hints specified on a view state or a transition. Therefore use of this method should not be needed.

validate

public void validate()

Invoke the validators available by convention.