org.springframework.dao.support

Class PersistenceExceptionTranslationInterceptor

java.lang.Object

org.springframework.dao.support.PersistenceExceptionTranslationInterceptor

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor, Aware, BeanFactoryAware, InitializingBean

public class PersistenceExceptionTranslationInterceptor
extends Object
implements MethodInterceptor, BeanFactoryAware, InitializingBean

AOP Alliance MethodInterceptor that provides persistence exception translation based on a given PersistenceExceptionTranslator.

Delegates to the given PersistenceExceptionTranslator to translate a RuntimeException thrown into Spring's DataAccessException hierarchy (if appropriate). If the RuntimeException in question is declared on the target method, it is always propagated as-is (with no translation applied).

Since:

2.0

Author:

Rod Johnson, Juergen Hoeller

See Also:

PersistenceExceptionTranslator

Constructor Summary

Constructors

Constructor and Description
PersistenceExceptionTranslationInterceptor() Create a new PersistenceExceptionTranslationInterceptor.
PersistenceExceptionTranslationInterceptor(ListableBeanFactory beanFactory) Create a new PersistenceExceptionTranslationInterceptor, autodetecting PersistenceExceptionTranslators in the given BeanFactory.
PersistenceExceptionTranslationInterceptor(PersistenceExceptionTranslator pet) Create a new PersistenceExceptionTranslationInterceptor for the given PersistenceExceptionTranslator.

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.
protected PersistenceExceptionTranslator	detectPersistenceExceptionTranslators(ListableBeanFactory bf) Detect all PersistenceExceptionTranslators in the given BeanFactory.
Object	invoke(MethodInvocation mi) Implement this method to perform extra treatments before and after the invocation.
void	setAlwaysTranslate(boolean alwaysTranslate) Specify whether to always translate the exception ("true"), or whether throw the raw exception when declared, i.e.
void	setBeanFactory(BeanFactory beanFactory) Callback that supplies the owning factory to a bean instance.
void	setPersistenceExceptionTranslator(PersistenceExceptionTranslator pet) Specify the PersistenceExceptionTranslator to use.

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistenceExceptionTranslationInterceptor

public PersistenceExceptionTranslationInterceptor()

Create a new PersistenceExceptionTranslationInterceptor. Needs to be configured with a PersistenceExceptionTranslator afterwards.

See Also:

setPersistenceExceptionTranslator(org.springframework.dao.support.PersistenceExceptionTranslator)

PersistenceExceptionTranslationInterceptor

public PersistenceExceptionTranslationInterceptor(PersistenceExceptionTranslator pet)

Create a new PersistenceExceptionTranslationInterceptor for the given PersistenceExceptionTranslator.

Parameters:

pet - the PersistenceExceptionTranslator to use

PersistenceExceptionTranslationInterceptor

public PersistenceExceptionTranslationInterceptor(ListableBeanFactory beanFactory)

Create a new PersistenceExceptionTranslationInterceptor, autodetecting PersistenceExceptionTranslators in the given BeanFactory.

Parameters:

beanFactory - the ListableBeanFactory to obtaining all PersistenceExceptionTranslators from

Method Detail

setPersistenceExceptionTranslator

public void setPersistenceExceptionTranslator(PersistenceExceptionTranslator pet)

Specify the PersistenceExceptionTranslator to use.

Default is to autodetect all PersistenceExceptionTranslators in the containing BeanFactory, using them in a chain.

See Also:

detectPersistenceExceptionTranslators(org.springframework.beans.factory.ListableBeanFactory)

setAlwaysTranslate

public void setAlwaysTranslate(boolean alwaysTranslate)

Specify whether to always translate the exception ("true"), or whether throw the raw exception when declared, i.e. when the originating method signature's exception declarations allow for the raw exception to be thrown ("false").

Default is "false". Switch this flag to "true" in order to always translate applicable exceptions, independent from the originating method signature.

Note that the originating method does not have to declare the specific exception. Any base class will do as well, even throws Exception: As long as the originating method does explicitly declare compatible exceptions, the raw exception will be rethrown. If you would like to avoid throwing raw exceptions in any case, switch this flag to "true".

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
                    throws BeansException

Description copied from interface: BeanFactoryAware

Callback that supplies the owning factory to a bean instance.

Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

Specified by:

setBeanFactory in interface BeanFactoryAware

Parameters:

beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

Throws:

BeansException - in case of initialization errors

See Also:

BeanInitializationException

afterPropertiesSet

public void afterPropertiesSet()

Description copied from interface: InitializingBean

Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

Specified by:

afterPropertiesSet in interface InitializingBean

invoke

public Object invoke(MethodInvocation mi)
              throws Throwable

Description copied from interface: MethodInterceptor

Implement this method to perform extra treatments before and after the invocation. Polite implementations would certainly like to invoke Joinpoint.proceed().

Specified by:

invoke in interface MethodInterceptor

Parameters:

mi - the method invocation joinpoint

Returns:

the result of the call to Joinpoint.proceed(); might be intercepted by the interceptor

Throws:

Throwable - if the interceptors or the target object throws an exception

detectPersistenceExceptionTranslators

protected PersistenceExceptionTranslator detectPersistenceExceptionTranslators(ListableBeanFactory bf)

Detect all PersistenceExceptionTranslators in the given BeanFactory.

Parameters:

bf - the ListableBeanFactory to obtain PersistenceExceptionTranslators from

Returns:

a chained PersistenceExceptionTranslator, combining all PersistenceExceptionTranslators found in the given bean factory

See Also:

ChainedPersistenceExceptionTranslator