Package org.springframework.jms.listener.endpoint

Class DefaultJmsActivationSpecFactory

java.lang.Object

org.springframework.jms.listener.endpoint.StandardJmsActivationSpecFactory

org.springframework.jms.listener.endpoint.DefaultJmsActivationSpecFactory

All Implemented Interfaces:

JmsActivationSpecFactory

public class DefaultJmsActivationSpecFactory
extends StandardJmsActivationSpecFactory

Default implementation of the JmsActivationSpecFactory interface. Supports the standard JMS properties as defined by the JCA 1.5 specification, as well as Spring's extended "maxConcurrency" and "prefetchSize" settings through autodetection of well-known vendor-specific provider properties.

An ActivationSpec factory is effectively dependent on the concrete JMS provider, e.g. on ActiveMQ. This default implementation simply guesses the ActivationSpec class name from the provider's class name ("ActiveMQResourceAdapter" → "ActiveMQActivationSpec" in the same package, or "ActivationSpecImpl" in the same package as the ResourceAdapter class), and populates the ActivationSpec properties as suggested by the JCA 1.5 specification (Appendix B). Specify the 'activationSpecClass' property explicitly if these default naming rules do not apply.

Note: ActiveMQ, JORAM and WebSphere are supported in terms of extended settings (through the detection of their bean property naming conventions). The default ActivationSpec class detection rules may apply to other JMS providers as well.

Thanks to Agim Emruli and Laurie Chan for pointing out WebSphere MQ settings and contributing corresponding tests!

Since:

2.5

Author:

Juergen Hoeller

See Also:

• StandardJmsActivationSpecFactory.setActivationSpecClass(java.lang.Class<?>)

Field Summary

Fields

Modifier and Type	Field	Description
protected final Log	logger	Logger available to subclasses.

Constructor Summary

Constructors

Constructor	Description
DefaultJmsActivationSpecFactory()

Method Summary

Modifier and Type	Method	Description
protected void	applyAcknowledgeMode(BeanWrapper bw, int ackMode)	This implementation maps SESSION_TRANSACTED onto an ActivationSpec property named "useRAManagedTransaction", if available (following ActiveMQ's naming conventions).
protected Class<?>	determineActivationSpecClass(ResourceAdapter adapter)	This implementation guesses the ActivationSpec class name from the provider's class name: e.g.
protected void	populateActivationSpecProperties(BeanWrapper bw, JmsActivationSpecConfig config)	This implementation supports Spring's extended "maxConcurrency" and "prefetchSize" settings through detecting corresponding ActivationSpec properties: "maxSessions"/"maxNumberOfWorks" and "maxMessagesPerSessions"/"maxMessages", respectively (following ActiveMQ's and JORAM's naming conventions).

Methods inherited from class org.springframework.jms.listener.endpoint.StandardJmsActivationSpecFactory

createActivationSpec, getDestinationResolver, setActivationSpecClass, setDefaultProperties, setDestinationResolver

Methods inherited from class java.lang.Object

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

Field Details

logger

protected final Log logger

Logger available to subclasses.

Constructor Details

DefaultJmsActivationSpecFactory

public DefaultJmsActivationSpecFactory()

Method Details

determineActivationSpecClass

protected Class<?> determineActivationSpecClass(ResourceAdapter adapter)

This implementation guesses the ActivationSpec class name from the provider's class name: e.g. "ActiveMQResourceAdapter" → "ActiveMQActivationSpec" in the same package, or a class named "ActivationSpecImpl" in the same package as the ResourceAdapter class.

Overrides:

determineActivationSpecClass in class StandardJmsActivationSpecFactory

Parameters:

adapter - the ResourceAdapter to check

Returns:

the corresponding ActivationSpec class, or null if not determinable

See Also:

• StandardJmsActivationSpecFactory.setActivationSpecClass(java.lang.Class<?>)

populateActivationSpecProperties

protected void populateActivationSpecProperties(BeanWrapper bw,
 JmsActivationSpecConfig config)

This implementation supports Spring's extended "maxConcurrency" and "prefetchSize" settings through detecting corresponding ActivationSpec properties: "maxSessions"/"maxNumberOfWorks" and "maxMessagesPerSessions"/"maxMessages", respectively (following ActiveMQ's and JORAM's naming conventions).

Overrides:

populateActivationSpecProperties in class StandardJmsActivationSpecFactory

Parameters:

bw - the BeanWrapper wrapping the ActivationSpec object

config - the configured object holding common JMS settings

applyAcknowledgeMode

protected void applyAcknowledgeMode(BeanWrapper bw,
 int ackMode)

This implementation maps SESSION_TRANSACTED onto an ActivationSpec property named "useRAManagedTransaction", if available (following ActiveMQ's naming conventions).

Overrides:

applyAcknowledgeMode in class StandardJmsActivationSpecFactory

Parameters:

bw - the BeanWrapper wrapping the ActivationSpec object

ackMode - the configured acknowledgment mode (according to the constants in Session)

See Also:

• Session.AUTO_ACKNOWLEDGE
• Session.DUPS_OK_ACKNOWLEDGE
• Session.CLIENT_ACKNOWLEDGE
• Session.SESSION_TRANSACTED