org.springframework.validation.beanvalidation

Class BeanValidationPostProcessor

java.lang.Object

org.springframework.validation.beanvalidation.BeanValidationPostProcessor

All Implemented Interfaces:

BeanPostProcessor, InitializingBean

public class BeanValidationPostProcessor
extends Object
implements BeanPostProcessor, InitializingBean

Simple BeanPostProcessor that checks JSR-303 constraint annotations in Spring-managed beans, throwing an initialization exception in case of constraint violations right before calling the bean's init method (if any).

Since:

3.0

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor and Description
BeanValidationPostProcessor()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected void	doValidate(Object bean) Perform validation of the given bean.
Object	postProcessAfterInitialization(Object bean, String beanName) Apply this BeanPostProcessor to the given new bean instance after any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method).
Object	postProcessBeforeInitialization(Object bean, String beanName) Apply this BeanPostProcessor to the given new bean instance before any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method).
void	setAfterInitialization(boolean afterInitialization) Choose whether to perform validation after bean initialization (i.e.
void	setValidator(Validator validator) Set the JSR-303 Validator to delegate to for validating beans.
void	setValidatorFactory(ValidatorFactory validatorFactory) Set the JSR-303 ValidatorFactory to delegate to for validating beans, using its default Validator.

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanValidationPostProcessor

public BeanValidationPostProcessor()

Method Detail

setValidator

public void setValidator(Validator validator)

Set the JSR-303 Validator to delegate to for validating beans.

Default is the default ValidatorFactory's default Validator.

setValidatorFactory

public void setValidatorFactory(ValidatorFactory validatorFactory)

Set the JSR-303 ValidatorFactory to delegate to for validating beans, using its default Validator.

Default is the default ValidatorFactory's default Validator.

See Also:

ValidatorFactory.getValidator()

setAfterInitialization

public void setAfterInitialization(boolean afterInitialization)

Choose whether to perform validation after bean initialization (i.e. after init methods) instead of before (which is the default).

Default is "false" (before initialization). Switch this to "true" (after initialization) if you would like to give init methods a chance to populate constrained fields before they get validated.

afterPropertiesSet

public void afterPropertiesSet()

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

postProcessBeforeInitialization

public Object postProcessBeforeInitialization(Object bean,
                                              String beanName)
                                       throws BeansException

Description copied from interface: BeanPostProcessor

Apply this BeanPostProcessor to the given new bean instance before any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method). The bean will already be populated with property values. The returned bean instance may be a wrapper around the original.

The default implementation returns the given bean as-is.

Specified by:

postProcessBeforeInitialization in interface BeanPostProcessor

Parameters:

bean - the new bean instance

beanName - the name of the bean

Returns:

the bean instance to use, either the original or a wrapped one; if null, no subsequent BeanPostProcessors will be invoked

Throws:

BeansException - in case of errors

See Also:

InitializingBean.afterPropertiesSet()

postProcessAfterInitialization

public Object postProcessAfterInitialization(Object bean,
                                             String beanName)
                                      throws BeansException

Description copied from interface: BeanPostProcessor

Apply this BeanPostProcessor to the given new bean instance after any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method). The bean will already be populated with property values. The returned bean instance may be a wrapper around the original.

In case of a FactoryBean, this callback will be invoked for both the FactoryBean instance and the objects created by the FactoryBean (as of Spring 2.0). The post-processor can decide whether to apply to either the FactoryBean or created objects or both through corresponding bean instanceof FactoryBean checks.

This callback will also be invoked after a short-circuiting triggered by a InstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation(java.lang.Class<?>, java.lang.String) method, in contrast to all other BeanPostProcessor callbacks.

The default implementation returns the given bean as-is.

Specified by:

postProcessAfterInitialization in interface BeanPostProcessor

Parameters:

bean - the new bean instance

beanName - the name of the bean

Returns:

the bean instance to use, either the original or a wrapped one; if null, no subsequent BeanPostProcessors will be invoked

Throws:

BeansException - in case of errors

See Also:

InitializingBean.afterPropertiesSet(), FactoryBean

doValidate

protected void doValidate(Object bean)

Perform validation of the given bean.

Parameters:

bean - the bean instance to validate

See Also:

Validator.validate(T, java.lang.Class<?>...)