PooledConnection obtaind from PooledConnectionFactory overwrites 
ExceptionListener
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                 Key: AMQ-2225
                 URL: https://issues.apache.org/activemq/browse/AMQ-2225
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.2.0
            Reporter: Lukasz Zielinski
            Priority: Critical


When multiple connections are obtained from PooledConnectionFactory and 
ExceptionListeners are set for them only one ExceptionListener will be notified 
about connection problems. Issue is caused by overwriting listeners in shared 
connection.

Test case based on 
http://svn.apache.org/viewvc/activemq/trunk/activemq-pool/src/test/java/org/apache/activemq/pool/PooledTopicPublisherTest.java?view=markup

public void testSetGetExceptionListener2() throws Exception {
        PooledConnectionFactory pcf = new PooledConnectionFactory();
        pcf.setConnectionFactory(new ActiveMQConnectionFactory("vm://test"));

        TopicConnection conn1 = (TopicConnection) pcf.createConnection();
        ExceptionListener list1 = new ExceptionListener() {
            public void onException(JMSException exception) {
            }
        };
        conn1.setExceptionListener(list1);

        TopicConnection conn2 = (TopicConnection) pcf.createConnection();
        ExceptionListener list2 = new ExceptionListener() {
            public void onException(JMSException exception) {
            }
        };
        conn2.setExceptionListener(list2);

        assertEquals(list1, conn1.getExceptionListener());//this assertion will 
fail
        assertEquals(list2, conn2.getExceptionListener());//this assertion will 
pass

        assertEquals(list2, conn1.getExceptionListener());// THE PROBLEM
} 

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