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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.jms.remoting

Source Cross Reference Class Diagram Java Document (Java Doc)

org.springframework.remoting.support .RemoteInvocationBasedExporter

org.springframework.jms.remoting .JmsInvokerServiceExporter

JmsInvokerServiceExporter

public class JmsInvokerServiceExporter extends RemoteInvocationBasedExporter implements SessionAwareMessageListener,InitializingBean(Code)

JMS message listener that exports the specified service bean as a JMS service endpoint, accessible via a JMS invoker proxy.

Note that this class implements Spring's org.springframework.jms.listener.SessionAwareMessageListener interface, since it requires access to the active JMS Session. Hence, this class can only be used with message listener containers which support the SessionAwareMessageListener interface (e.g. Spring's org.springframework.jms.listener.DefaultMessageListenerContainer ).

Thanks to James Strachan for the original prototype that this JMS invoker mechanism was inspired by!
author:
   Juergen Hoeller
author:
   James Strachan
since:
   2.0
See Also:   JmsInvokerClientInterceptor
See Also:   JmsInvokerProxyFactoryBean

Method Summary
public void	afterPropertiesSet()
protected Message	createResponseMessage(Message requestMessage, Session session, RemoteInvocationResult result) Create the invocation result response message.
protected RemoteInvocation	onInvalidRequest(Message requestMessage) Callback that is invoked by JmsInvokerServiceExporter.readRemoteInvocation when it encounters an invalid request message.
public void	onMessage(Message requestMessage, Session session)
protected RemoteInvocation	readRemoteInvocation(Message requestMessage) Read a RemoteInvocation from the given JMS message.
public void	setIgnoreInvalidRequests(boolean ignoreInvalidRequests) Set whether invalidly formatted messages should be discarded. Default is "true". Switch this flag to "false" to throw an exception back to the listener container.
public void	setMessageConverter(MessageConverter messageConverter) Specify the MessageConverter to use for turning request messages into org.springframework.remoting.support.RemoteInvocation objects, as well as org.springframework.remoting.support.RemoteInvocationResult objects into response messages.
protected void	writeRemoteInvocationResult(Message requestMessage, Session session, RemoteInvocationResult result) Send the given RemoteInvocationResult as a JMS message to the originator.

Method Detail

afterPropertiesSet
public void afterPropertiesSet()(Code)

createResponseMessage
protected Message createResponseMessage(Message requestMessage, Session session, RemoteInvocationResult result) throws JMSException(Code)
	Create the invocation result response message. The default implementation creates a JMS ObjectMessage for the given RemoteInvocationResult object. Parameters: requestMessage - the original request message Parameters: session - the JMS session to use Parameters: result - the invocation result the message response to send throws: javax.jms.JMSException - if creating the messsage failed

onInvalidRequest
protected RemoteInvocation onInvalidRequest(Message requestMessage) throws JMSException(Code)
	Callback that is invoked by JmsInvokerServiceExporter.readRemoteInvocation when it encounters an invalid request message. The default implementation either discards the invalid message or throws a MessageFormatException - according to the "ignoreInvalidRequests" flag, which is set to "true" (that is, discard invalid messages) by default. Parameters: requestMessage - the invalid request message the RemoteInvocation to expose for the invalid request (typically`null` in case of an invalid message that will simply be ignored) throws: javax.jms.JMSException - in case of the invalid request supposedto lead to an exception (instead of ignoring it) See Also: JmsInvokerServiceExporter.readRemoteInvocation See Also: JmsInvokerServiceExporter.setIgnoreInvalidRequests

onMessage
public void onMessage(Message requestMessage, Session session) throws JMSException(Code)

readRemoteInvocation
protected RemoteInvocation readRemoteInvocation(Message requestMessage) throws JMSException(Code)
	Read a RemoteInvocation from the given JMS message. Parameters: requestMessage - current request message the RemoteInvocation object (or `null`in case of an invalid message that will simply be ignored) throws: javax.jms.JMSException - in case of message access failure

setIgnoreInvalidRequests
public void setIgnoreInvalidRequests(boolean ignoreInvalidRequests)(Code)
	Set whether invalidly formatted messages should be discarded. Default is "true". Switch this flag to "false" to throw an exception back to the listener container. This will typically lead to redelivery of the message, which is usually undesirable - since the message content will be the same (that is, still invalid).

setMessageConverter

public void setMessageConverter(MessageConverter messageConverter)(Code)

Specify the MessageConverter to use for turning request messages into org.springframework.remoting.support.RemoteInvocation objects, as well as org.springframework.remoting.support.RemoteInvocationResult objects into response messages.

Default is a org.springframework.jms.support.converter.SimpleMessageConverter , using a standard JMS javax.jms.ObjectMessage for each invocation / invocation result object.

Custom implementations may generally adapt Serializables into special kinds of messages, or might be specifically tailored for translating RemoteInvocation(Result)s into specific kinds of messages.

writeRemoteInvocationResult
protected void writeRemoteInvocationResult(Message requestMessage, Session session, RemoteInvocationResult result) throws JMSException(Code)
	Send the given RemoteInvocationResult as a JMS message to the originator. Parameters: requestMessage - current request message Parameters: session - the JMS Session to use Parameters: result - the RemoteInvocationResult object throws: javax.jms.JMSException - if thrown by trying to send the message

Methods inherited from org.springframework.remoting.support.RemoteInvocationBasedExporter

public RemoteInvocationExecutor getRemoteInvocationExecutor()(Code)(Java Doc)
protected Object invoke(RemoteInvocation invocation, Object targetObject) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException(Code)(Java Doc)
protected RemoteInvocationResult invokeAndCreateResult(RemoteInvocation invocation, Object targetObject)(Code)(Java Doc)
public void setRemoteInvocationExecutor(RemoteInvocationExecutor remoteInvocationExecutor)(Code)(Java Doc)

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