Spring Framework

org.springframework.validation.beanvalidation
Class BeanValidationPostProcessor

java.lang.Object
  extended by org.springframework.validation.beanvalidation.BeanValidationPostProcessor
All Implemented Interfaces:
BeanPostProcessor, InitializingBean

public class BeanValidationPostProcessor
extends java.lang.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
BeanValidationPostProcessor()
           
 
Method Summary
 void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected  void doValidate(java.lang.Object bean)
          Perform validation of the given bean.
 java.lang.Object postProcessAfterInitialization(java.lang.Object bean, java.lang.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).
 java.lang.Object postProcessBeforeInitialization(java.lang.Object bean, java.lang.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(javax.validation.Validator validator)
          Set the JSR-303 Validator to delegate to for validating beans.
 void setValidatorFactory(javax.validation.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(javax.validation.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(javax.validation.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 java.lang.Object postProcessBeforeInitialization(java.lang.Object bean,
                                                        java.lang.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.

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 java.lang.Object postProcessAfterInitialization(java.lang.Object bean,
                                                       java.lang.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.

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(java.lang.Object bean)
Perform validation of the given bean.

Parameters:
bean - the bean instance to validate
See Also:
Validator.validate(T, java.lang.Class...)

Spring Framework