From c82a66b59c1c77415b4c850c64607596b34d0826 Mon Sep 17 00:00:00 2001
From: Juergen Hoeller <jhoeller@vmware.com>
Date: Mon, 23 Mar 2009 11:19:25 +0000
Subject: [PATCH] SessionAwareMessageListener supports generic declaration of
 concrete JMS Message type

---
 .../jms/listener/SessionAwareMessageListener.java           | 6 +++---
 .../jms/listener/adapter/MessageListenerAdapter.java        | 4 +++-
 .../jms/remoting/JmsInvokerServiceExporter.java             | 4 ++--
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/org.springframework.jms/src/main/java/org/springframework/jms/listener/SessionAwareMessageListener.java b/org.springframework.jms/src/main/java/org/springframework/jms/listener/SessionAwareMessageListener.java
index 1b9e8f3a80..1ebd320c1d 100644
--- a/org.springframework.jms/src/main/java/org/springframework/jms/listener/SessionAwareMessageListener.java
+++ b/org.springframework.jms/src/main/java/org/springframework/jms/listener/SessionAwareMessageListener.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008 the original author or authors.
+ * Copyright 2002-2009 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ import javax.jms.Session;
  * @see org.springframework.jms.listener.endpoint.JmsMessageEndpointManager
  * @see javax.jms.MessageListener
  */
-public interface SessionAwareMessageListener {
+public interface SessionAwareMessageListener<M extends Message> {
 
 	/**
 	 * Callback for processing a received JMS message.
@@ -51,6 +51,6 @@ public interface SessionAwareMessageListener {
 	 * @param session the underlying JMS Session (never <code>null</code>)
 	 * @throws JMSException if thrown by JMS methods
 	 */
-	void onMessage(Message message, Session session) throws JMSException;
+	void onMessage(M message, Session session) throws JMSException;
 
 }
diff --git a/org.springframework.jms/src/main/java/org/springframework/jms/listener/adapter/MessageListenerAdapter.java b/org.springframework.jms/src/main/java/org/springframework/jms/listener/adapter/MessageListenerAdapter.java
index 5125d9f0ad..9f070eb9f4 100644
--- a/org.springframework.jms/src/main/java/org/springframework/jms/listener/adapter/MessageListenerAdapter.java
+++ b/org.springframework.jms/src/main/java/org/springframework/jms/listener/adapter/MessageListenerAdapter.java
@@ -128,7 +128,8 @@ import org.springframework.util.ObjectUtils;
  * @see org.springframework.jms.listener.SessionAwareMessageListener
  * @see org.springframework.jms.listener.AbstractMessageListenerContainer#setMessageListener
  */
-public class MessageListenerAdapter implements MessageListener, SessionAwareMessageListener, SubscriptionNameProvider {
+public class MessageListenerAdapter
+		implements MessageListener, SessionAwareMessageListener<Message>, SubscriptionNameProvider {
 
 	/**
 	 * Out-of-the-box value for the default listener method: "handleMessage".
@@ -318,6 +319,7 @@ public class MessageListenerAdapter implements MessageListener, SessionAwareMess
 	 * @param session the JMS session to operate on
 	 * @throws JMSException if thrown by JMS API methods
 	 */
+	@SuppressWarnings("unchecked")
 	public void onMessage(Message message, Session session) throws JMSException {
 		// Check whether the delegate is a MessageListener impl itself.
 		// In that case, the adapter will simply act as a pass-through.
diff --git a/org.springframework.jms/src/main/java/org/springframework/jms/remoting/JmsInvokerServiceExporter.java b/org.springframework.jms/src/main/java/org/springframework/jms/remoting/JmsInvokerServiceExporter.java
index d73ca8ced3..dd42794609 100644
--- a/org.springframework.jms/src/main/java/org/springframework/jms/remoting/JmsInvokerServiceExporter.java
+++ b/org.springframework.jms/src/main/java/org/springframework/jms/remoting/JmsInvokerServiceExporter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008 the original author or authors.
+ * Copyright 2002-2009 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -52,7 +52,7 @@ import org.springframework.remoting.support.RemoteInvocationResult;
  * @see JmsInvokerProxyFactoryBean
  */
 public class JmsInvokerServiceExporter extends RemoteInvocationBasedExporter
-		implements SessionAwareMessageListener, InitializingBean {
+		implements SessionAwareMessageListener<Message>, InitializingBean {
 
 	private MessageConverter messageConverter = new SimpleMessageConverter();