org.springframework.jms.listener.adapter

Class AbstractAdaptableMessageListener

java.lang.Object

org.springframework.jms.listener.adapter.AbstractAdaptableMessageListener

All Implemented Interfaces:

MessageListener, SessionAwareMessageListener<Message>

Direct Known Subclasses:

MessageListenerAdapter, MessagingMessageListenerAdapter

public abstract class AbstractAdaptableMessageListener
extends Object
implements MessageListener, SessionAwareMessageListener<Message>

An abstract JMS MessageListener adapter providing the necessary infrastructure to extract the payload of a JMS Message.

Since:

4.1

Author:

Juergen Hoeller, Stephane Nicoll

See Also:

MessageListener, SessionAwareMessageListener

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
AbstractAdaptableMessageListener()

Method Summary

Modifier and Type	Method and Description
protected Message	buildMessage(Session session, Object result) Build a JMS message to be sent as response based on the given result object.
protected Object	extractMessage(Message message) Extract the message body from the given JMS message.
protected DestinationResolver	getDestinationResolver() Return the DestinationResolver for this adapter.
protected MessageConverter	getMessageConverter() Return the converter that will convert incoming JMS messages to listener method arguments, and objects returned from listener methods back to JMS messages.
protected MessagingMessageConverter	getMessagingMessageConverter() Return the MessagingMessageConverter for this listener, being able to convert Message.
protected Destination	getResponseDestination(Message request, Message response, Session session) Determine a response destination for the given message.
protected void	handleListenerException(Throwable ex) Handle the given exception that arose during listener execution.
protected void	handleResult(Object result, Message request, Session session) Handle the given result object returned from the listener method, sending a response message back.
void	onMessage(Message message) Standard JMS MessageListener entry point.
protected void	postProcessProducer(MessageProducer producer, Message response) Post-process the given message producer before using it to send the response.
protected void	postProcessResponse(Message request, Message response) Post-process the given response message before it will be sent.
protected Destination	resolveDefaultResponseDestination(Session session) Resolve the default response destination into a JMS Destination, using this accessor's DestinationResolver in case of a destination name.
protected void	sendResponse(Session session, Destination destination, Message response) Send the given response message to the given destination.
void	setDefaultResponseDestination(Destination destination) Set the default destination to send response messages to.
void	setDefaultResponseQueueName(String destinationName) Set the name of the default response queue to send response messages to.
void	setDefaultResponseTopicName(String destinationName) Set the name of the default response topic to send response messages to.
void	setDestinationResolver(DestinationResolver destinationResolver) Set the DestinationResolver that should be used to resolve response destination names for this adapter.
void	setHeaderMapper(JmsHeaderMapper headerMapper) Set the JmsHeaderMapper implementation to use to map the standard JMS headers.
void	setMessageConverter(MessageConverter messageConverter) Set the converter that will convert incoming JMS messages to listener method arguments, and objects returned from listener methods back to JMS messages.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.jms.listener.SessionAwareMessageListener

onMessage

Field Detail

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

AbstractAdaptableMessageListener

public AbstractAdaptableMessageListener()

Method Detail

setDefaultResponseDestination

public void setDefaultResponseDestination(Destination destination)

Set the default destination to send response messages to. This will be applied in case of a request message that does not carry a "JMSReplyTo" field.

Response destinations are only relevant for listener methods that return result objects, which will be wrapped in a response message and sent to a response destination.

Alternatively, specify a "defaultResponseQueueName" or "defaultResponseTopicName", to be dynamically resolved via the DestinationResolver.

See Also:

setDefaultResponseQueueName(String), setDefaultResponseTopicName(String), getResponseDestination(javax.jms.Message, javax.jms.Message, javax.jms.Session)

setDefaultResponseQueueName

public void setDefaultResponseQueueName(String destinationName)

Set the name of the default response queue to send response messages to. This will be applied in case of a request message that does not carry a "JMSReplyTo" field.

Alternatively, specify a JMS Destination object as "defaultResponseDestination".

See Also:

setDestinationResolver(org.springframework.jms.support.destination.DestinationResolver), setDefaultResponseDestination(javax.jms.Destination)

setDefaultResponseTopicName

public void setDefaultResponseTopicName(String destinationName)

Set the name of the default response topic to send response messages to. This will be applied in case of a request message that does not carry a "JMSReplyTo" field.

Alternatively, specify a JMS Destination object as "defaultResponseDestination".

See Also:

setDestinationResolver(org.springframework.jms.support.destination.DestinationResolver), setDefaultResponseDestination(javax.jms.Destination)

setDestinationResolver

public void setDestinationResolver(DestinationResolver destinationResolver)

Set the DestinationResolver that should be used to resolve response destination names for this adapter.

The default resolver is a DynamicDestinationResolver. Specify a JndiDestinationResolver for resolving destination names as JNDI locations.

See Also:

DynamicDestinationResolver, JndiDestinationResolver

getDestinationResolver

protected DestinationResolver getDestinationResolver()

Return the DestinationResolver for this adapter.

setMessageConverter

public void setMessageConverter(MessageConverter messageConverter)

Set the converter that will convert incoming JMS messages to listener method arguments, and objects returned from listener methods back to JMS messages.

The default converter is a SimpleMessageConverter, which is able to handle BytesMessages, TextMessages and ObjectMessages.

getMessageConverter

protected MessageConverter getMessageConverter()

Return the converter that will convert incoming JMS messages to listener method arguments, and objects returned from listener methods back to JMS messages.

setHeaderMapper

public void setHeaderMapper(JmsHeaderMapper headerMapper)

Set the JmsHeaderMapper implementation to use to map the standard JMS headers. By default, a SimpleJmsHeaderMapper is used.

See Also:

SimpleJmsHeaderMapper

getMessagingMessageConverter

protected final MessagingMessageConverter getMessagingMessageConverter()

Return the MessagingMessageConverter for this listener, being able to convert Message.

onMessage

public void onMessage(Message message)

Standard JMS MessageListener entry point.

Delegates the message to the target listener method, with appropriate conversion of the message argument. In case of an exception, the handleListenerException(Throwable) method will be invoked.

Note: Does not support sending response messages based on result objects returned from listener methods. Use the SessionAwareMessageListener entry point (typically through a Spring message listener container) for handling result objects as well.

Specified by:

onMessage in interface MessageListener

Parameters:

message - the incoming JMS message

See Also:

handleListenerException(java.lang.Throwable), SessionAwareMessageListener.onMessage(javax.jms.Message, javax.jms.Session)

handleListenerException

protected void handleListenerException(Throwable ex)

Handle the given exception that arose during listener execution. The default implementation logs the exception at error level.

This method only applies when used as standard JMS MessageListener. In case of the Spring SessionAwareMessageListener mechanism, exceptions get handled by the caller instead.

Parameters:

ex - the exception to handle

See Also:

onMessage(javax.jms.Message)

extractMessage

protected Object extractMessage(Message message)

Extract the message body from the given JMS message.

Parameters:

message - the JMS Message

Returns:

the content of the message, to be passed into the listener method as an argument

Throws:

MessageConversionException - if the message could not be extracted

handleResult

protected void handleResult(Object result,
                            Message request,
                            Session session)

Handle the given result object returned from the listener method, sending a response message back.

Parameters:

result - the result object to handle (never null)

request - the original request message

session - the JMS Session to operate on (may be null)

Throws:

ReplyFailureException - if the response message could not be sent

See Also:

buildMessage(javax.jms.Session, java.lang.Object), postProcessResponse(javax.jms.Message, javax.jms.Message), getResponseDestination(javax.jms.Message, javax.jms.Message, javax.jms.Session), sendResponse(javax.jms.Session, javax.jms.Destination, javax.jms.Message)

buildMessage

protected Message buildMessage(Session session,
                               Object result)
                        throws JMSException

Build a JMS message to be sent as response based on the given result object.

Parameters:

session - the JMS Session to operate on

result - the content of the message, as returned from the listener method

Returns:

the JMS Message (never null)

Throws:

JMSException - if thrown by JMS API methods

See Also:

setMessageConverter(org.springframework.jms.support.converter.MessageConverter)

postProcessResponse

protected void postProcessResponse(Message request,
                                   Message response)
                            throws JMSException

Post-process the given response message before it will be sent.

The default implementation sets the response's correlation id to the request message's correlation id, if any; otherwise to the request message id.

Parameters:

request - the original incoming JMS message

response - the outgoing JMS message about to be sent

Throws:

JMSException - if thrown by JMS API methods

See Also:

Message.setJMSCorrelationID(java.lang.String)

getResponseDestination

protected Destination getResponseDestination(Message request,
                                             Message response,
                                             Session session)
                                      throws JMSException

Determine a response destination for the given message.

The default implementation first checks the JMS Reply-To Destination of the supplied request; if that is not null it is returned; if it is null, then the configured default response destination is returned; if this too is null, then an InvalidDestinationException is thrown.

Parameters:

request - the original incoming JMS message

response - the outgoing JMS message about to be sent

session - the JMS Session to operate on

Returns:

the response destination (never null)

Throws:

JMSException - if thrown by JMS API methods

InvalidDestinationException - if no Destination can be determined

See Also:

setDefaultResponseDestination(javax.jms.Destination), Message.getJMSReplyTo()

resolveDefaultResponseDestination

protected Destination resolveDefaultResponseDestination(Session session)
                                                 throws JMSException

Resolve the default response destination into a JMS Destination, using this accessor's DestinationResolver in case of a destination name.

Returns:

the located Destination

Throws:

JMSException - if resolution failed

See Also:

setDefaultResponseDestination(javax.jms.Destination), setDefaultResponseQueueName(java.lang.String), setDefaultResponseTopicName(java.lang.String), setDestinationResolver(org.springframework.jms.support.destination.DestinationResolver)

sendResponse

protected void sendResponse(Session session,
                            Destination destination,
                            Message response)
                     throws JMSException

Send the given response message to the given destination.

Parameters:

response - the JMS message to send

destination - the JMS destination to send to

session - the JMS session to operate on

Throws:

JMSException - if thrown by JMS API methods

See Also:

postProcessProducer(javax.jms.MessageProducer, javax.jms.Message), Session.createProducer(javax.jms.Destination), MessageProducer.send(javax.jms.Message)

postProcessProducer

protected void postProcessProducer(MessageProducer producer,
                                   Message response)
                            throws JMSException

Post-process the given message producer before using it to send the response.

The default implementation is empty.

Parameters:

producer - the JMS message producer that will be used to send the message

response - the outgoing JMS message about to be sent

Throws:

JMSException - if thrown by JMS API methods