org.springframework.jms.annotation

Class JmsListenerAnnotationBeanPostProcessor

java.lang.Object

org.springframework.jms.annotation.JmsListenerAnnotationBeanPostProcessor

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanPostProcessor, SmartInitializingSingleton, Ordered

public class JmsListenerAnnotationBeanPostProcessor
extends Object
implements BeanPostProcessor, Ordered, BeanFactoryAware, SmartInitializingSingleton

Bean post-processor that registers methods annotated with JmsListener to be invoked by a JMS message listener container created under the cover by a JmsListenerContainerFactory according to the attributes of the annotation.

Annotated methods can use flexible arguments as defined by JmsListener.

This post-processor is automatically registered by Spring's <jms:annotation-driven> XML element, and also by the EnableJms annotation.

Autodetects any JmsListenerConfigurer instances in the container, allowing for customization of the registry to be used, the default container factory or for fine-grained control over endpoints registration. See the EnableJms javadocs for complete usage details.

Since:

4.1

Author:

Stephane Nicoll, Juergen Hoeller

See Also:

JmsListener, EnableJms, JmsListenerConfigurer, JmsListenerEndpointRegistrar, JmsListenerEndpointRegistry, JmsListenerEndpoint, MethodJmsListenerEndpoint

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
JmsListenerAnnotationBeanPostProcessor()

Method Summary

Modifier and Type	Method and Description
void	afterSingletonsInstantiated() Invoked right at the end of the singleton pre-instantiation phase, with a guarantee that all regular singleton beans have been created already.
protected MethodJmsListenerEndpoint	createMethodJmsListenerEndpoint() Instantiate an empty MethodJmsListenerEndpoint for further configuration with provided parameters in processJmsListener(org.springframework.jms.annotation.JmsListener, java.lang.reflect.Method, java.lang.Object).
int	getOrder() Get the order value of this object.
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).
protected void	processJmsListener(JmsListener jmsListener, Method mostSpecificMethod, Object bean) Process the given JmsListener annotation on the given method, registering a corresponding endpoint for the given bean instance.
void	setBeanFactory(BeanFactory beanFactory) Making a BeanFactory available is optional; if not set, JmsListenerConfigurer beans won't get autodetected and an endpoint registry has to be explicitly configured.
void	setContainerFactoryBeanName(String containerFactoryBeanName) Set the name of the JmsListenerContainerFactory to use by default.
void	setEndpointRegistry(JmsListenerEndpointRegistry endpointRegistry) Set the JmsListenerEndpointRegistry that will hold the created endpoint and manage the lifecycle of the related listener container.
void	setMessageHandlerMethodFactory(MessageHandlerMethodFactory messageHandlerMethodFactory) Set the MessageHandlerMethodFactory to use to configure the message listener responsible to serve an endpoint detected by this processor.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Log logger

Constructor Detail

JmsListenerAnnotationBeanPostProcessor

public JmsListenerAnnotationBeanPostProcessor()

Method Detail

getOrder

public int getOrder()

Description copied from interface: Ordered

Get the order value of this object.

Higher values are interpreted as lower priority. As a consequence, the object with the lowest value has the highest priority (somewhat analogous to Servlet load-on-startup values).

Same order values will result in arbitrary sort positions for the affected objects.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE

setEndpointRegistry

public void setEndpointRegistry(JmsListenerEndpointRegistry endpointRegistry)

Set the JmsListenerEndpointRegistry that will hold the created endpoint and manage the lifecycle of the related listener container.

setContainerFactoryBeanName

public void setContainerFactoryBeanName(String containerFactoryBeanName)

Set the name of the JmsListenerContainerFactory to use by default.

If none is specified, "jmsListenerContainerFactory" is assumed to be defined.

setMessageHandlerMethodFactory

public void setMessageHandlerMethodFactory(MessageHandlerMethodFactory messageHandlerMethodFactory)

Set the MessageHandlerMethodFactory to use to configure the message listener responsible to serve an endpoint detected by this processor.

By default, DefaultMessageHandlerMethodFactory is used and it can be configured further to support additional method arguments or to customize conversion and validation support. See DefaultMessageHandlerMethodFactory Javadoc for more details.

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)

Making a BeanFactory available is optional; if not set, JmsListenerConfigurer beans won't get autodetected and an endpoint registry has to be explicitly configured.

Specified by:

setBeanFactory in interface BeanFactoryAware

Parameters:

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

See Also:

BeanInitializationException

afterSingletonsInstantiated

public void afterSingletonsInstantiated()

Description copied from interface: SmartInitializingSingleton

Invoked right at the end of the singleton pre-instantiation phase, with a guarantee that all regular singleton beans have been created already. ListableBeanFactory.getBeansOfType(java.lang.Class<T>) calls within this method won't trigger accidental side effects during bootstrap.

NOTE: This callback won't be triggered for singleton beans lazily initialized on demand after BeanFactory bootstrap, and not for any other bean scope either. Carefully use it for beans with the intended bootstrap semantics only.

Specified by:

afterSingletonsInstantiated in interface SmartInitializingSingleton

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.

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.

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

processJmsListener

protected void processJmsListener(JmsListener jmsListener,
                                  Method mostSpecificMethod,
                                  Object bean)

Process the given JmsListener annotation on the given method, registering a corresponding endpoint for the given bean instance.

Parameters:

jmsListener - the annotation to process

mostSpecificMethod - the annotated method

bean - the instance to invoke the method on

See Also:

createMethodJmsListenerEndpoint(), JmsListenerEndpointRegistrar.registerEndpoint(org.springframework.jms.config.JmsListenerEndpoint, org.springframework.jms.config.JmsListenerContainerFactory<?>)

createMethodJmsListenerEndpoint

protected MethodJmsListenerEndpoint createMethodJmsListenerEndpoint()

Instantiate an empty MethodJmsListenerEndpoint for further configuration with provided parameters in processJmsListener(org.springframework.jms.annotation.JmsListener, java.lang.reflect.Method, java.lang.Object).

Returns:

a new MethodJmsListenerEndpoint or subclass thereof

Since:

4.1.9

See Also:

MethodJmsListenerEndpoint.createMessageListenerInstance()