com.ibm.mq.spring.boot

Class MQConfigurationListenerDefault

java.lang.Object

com.ibm.mq.spring.boot.MQConfigurationListenerDefault

All Implemented Interfaces:

java.util.EventListener, org.springframework.context.ApplicationListener<org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent>

@ConditionalOnClass(value={org.springframework.boot.autoconfigure.jms.JmsProperties.Listener.class,org.springframework.jms.annotation.JmsListener.class})
 @ConditionalOnMissingBean(value=org.springframework.jms.annotation.JmsListener.class)
public class MQConfigurationListenerDefault
extends java.lang.Object
implements org.springframework.context.ApplicationListener<org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent>

The default Spring configuration for a JMS Listener sets the receive timeout (a polling loop timer) too low for a cost-effective solution with IBM MQ. See this article for more information. This class will override that default value if it is not explicitly set in the application properties. The application still has control though. If the app sets the value via a call to the listener.setReceiveTimeout method, then that still will be honoured as it comes after the creation and initial attribute setting of the listener object. This method is invoked early in the cycle, once the application environment has been loaded. We then get the opportunity to inspect and add to the environment that will be used later on by the JMS Listener initialisers. This allows the MQ JMS listener to have a different effective default than other JMS providers. Support for this property within Spring Boot itself was added in version 2.2.0

Constructor Summary

Constructors

Constructor and Description
MQConfigurationListenerDefault()

Method Summary

Modifier and Type	Method and Description
void	onApplicationEvent(org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent event)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.context.ApplicationListener

forPayload

Constructor Detail

MQConfigurationListenerDefault

public MQConfigurationListenerDefault()

Method Detail

onApplicationEvent

@Bean
 @Lazy(value=false)
public void onApplicationEvent(org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent event)

Specified by:

onApplicationEvent in interface org.springframework.context.ApplicationListener<org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent>