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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  voidafterPropertiesSet()
    
protected  MessagecreateResponseMessage(Message requestMessage, Session session, RemoteInvocationResult result)
     Create the invocation result response message.
protected  RemoteInvocationonInvalidRequest(Message requestMessage)
     Callback that is invoked by JmsInvokerServiceExporter.readRemoteInvocation when it encounters an invalid request message.
public  voidonMessage(Message requestMessage, Session session)
    
protected  RemoteInvocationreadRemoteInvocation(Message requestMessage)
     Read a RemoteInvocation from the given JMS message.
public  voidsetIgnoreInvalidRequests(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  voidsetMessageConverter(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  voidwriteRemoteInvocationResult(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 (typicallynull 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 nullin 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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