org.apache.activemq.pool
Class PooledConnection

java.lang.Object
  org.apache.activemq.pool.PooledConnection

All Implemented Interfaces:

Connection, QueueConnection, TopicConnection, Closeable, EnhancedConnection

public class PooledConnection
extends Object
implements TopicConnection, QueueConnection, EnhancedConnection

Represents a proxy Connection which is-a TopicConnection and QueueConnection which is pooled and on close() will return its reference to the ConnectionPool backing it. NOTE this implementation is only intended for use when sending messages. It does not deal with pooling of consumers; for that look at a library like Jencks such as in this example

Constructor Summary

PooledConnection(ConnectionPool pool)
Creates a new PooledConnection instance that uses the given ConnectionPool to create and manage its resources.

Method Summary

protected void	assertNotClosed()
protected void	cleanupAllLoanedSessions() The PooledSession tracks all Sessions that it created and now we close them.
protected void	cleanupConnectionTemporaryDestinations() Remove all of the temporary destinations created for this connection.
void	close() Closes a JMS object.
ConnectionConsumer	createConnectionConsumer(Destination destination, String selector, ServerSessionPool serverSessionPool, int maxMessages)
ConnectionConsumer	createConnectionConsumer(Queue queue, String selector, ServerSessionPool serverSessionPool, int maxMessages)
ConnectionConsumer	createConnectionConsumer(Topic topic, String s, ServerSessionPool serverSessionPool, int maxMessages)
ConnectionConsumer	createDurableConnectionConsumer(Topic topic, String selector, String s1, ServerSessionPool serverSessionPool, int i)
QueueSession	createQueueSession(boolean transacted, int ackMode)
Session	createSession(boolean transacted, int ackMode)
protected ActiveMQSession	createSession(SessionKey key)
TopicSession	createTopicSession(boolean transacted, int ackMode)
String	getClientID()
ActiveMQConnection	getConnection()
DestinationSource	getDestinationSource() Returns the DestinationSource object which can be used to listen to destinations being created or destroyed or to enquire about the current destinations available on the broker
ExceptionListener	getExceptionListener()
ConnectionMetaData	getMetaData()
int	getNumActiveSessions()
int	getNumSessions()
int	getNumtIdleSessions()
PooledConnection	newInstance() Factory method to create a new instance.
void	onSessionClosed(PooledSession session) Called when the PooledSession is closed.
void	onTemporaryQueueCreate(TemporaryQueue tempQueue) Called on successful creation of a new TemporaryQueue.
void	onTemporaryTopicCreate(TemporaryTopic tempTopic) Called on successful creation of a new TemporaryTopic.
void	setClientID(String clientID)
void	setExceptionListener(ExceptionListener exceptionListener)
void	start()
void	stop()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

PooledConnection

public PooledConnection(ConnectionPool pool)

Creates a new PooledConnection instance that uses the given ConnectionPool to create and manage its resources. The ConnectionPool instance can be shared amongst many PooledConnection instances.

Parameters:

pool - The connection and pool manager backing this proxy connection object.

Method Detail

newInstance

public PooledConnection newInstance()

Factory method to create a new instance.

close

public void close()
           throws JMSException

Description copied from interface: Closeable

Closes a JMS object.

Many JMS objects are closeable such as Connections, Sessions, Consumers and Producers.

Specified by:

close in interface Connection

Specified by:

close in interface Closeable

Throws:

JMSException - if the JMS provider fails to close the object due to some internal error.

start

public void start()
           throws JMSException

Specified by:

start in interface Connection

Throws:

JMSException

stop

public void stop()
          throws JMSException

Specified by:

stop in interface Connection

Throws:

JMSException

createConnectionConsumer

public ConnectionConsumer createConnectionConsumer(Destination destination,
                                                   String selector,
                                                   ServerSessionPool serverSessionPool,
                                                   int maxMessages)
                                            throws JMSException

Specified by:

createConnectionConsumer in interface Connection

Throws:

JMSException

createConnectionConsumer

public ConnectionConsumer createConnectionConsumer(Topic topic,
                                                   String s,
                                                   ServerSessionPool serverSessionPool,
                                                   int maxMessages)
                                            throws JMSException

Specified by:

createConnectionConsumer in interface TopicConnection

Throws:

JMSException

createDurableConnectionConsumer

public ConnectionConsumer createDurableConnectionConsumer(Topic topic,
                                                          String selector,
                                                          String s1,
                                                          ServerSessionPool serverSessionPool,
                                                          int i)
                                                   throws JMSException

Specified by:

createDurableConnectionConsumer in interface Connection

Specified by:

createDurableConnectionConsumer in interface TopicConnection

Throws:

JMSException

getClientID

public String getClientID()
                   throws JMSException

Specified by:

getClientID in interface Connection

Throws:

JMSException

getExceptionListener

public ExceptionListener getExceptionListener()
                                       throws JMSException

Specified by:

getExceptionListener in interface Connection

Throws:

JMSException

getMetaData

public ConnectionMetaData getMetaData()
                               throws JMSException

Specified by:

getMetaData in interface Connection

Throws:

JMSException

setExceptionListener

public void setExceptionListener(ExceptionListener exceptionListener)
                          throws JMSException

Specified by:

setExceptionListener in interface Connection

Throws:

JMSException

setClientID

public void setClientID(String clientID)
                 throws JMSException

Specified by:

setClientID in interface Connection

Throws:

JMSException

createConnectionConsumer

public ConnectionConsumer createConnectionConsumer(Queue queue,
                                                   String selector,
                                                   ServerSessionPool serverSessionPool,
                                                   int maxMessages)
                                            throws JMSException

Specified by:

createConnectionConsumer in interface QueueConnection

Throws:

JMSException

createQueueSession

public QueueSession createQueueSession(boolean transacted,
                                       int ackMode)
                                throws JMSException

Specified by:

createQueueSession in interface QueueConnection

Throws:

JMSException

createTopicSession

public TopicSession createTopicSession(boolean transacted,
                                       int ackMode)
                                throws JMSException

Specified by:

createTopicSession in interface TopicConnection

Throws:

JMSException

createSession

public Session createSession(boolean transacted,
                             int ackMode)
                      throws JMSException

Specified by:

createSession in interface Connection

Throws:

JMSException

getDestinationSource

public DestinationSource getDestinationSource()
                                       throws JMSException

Description copied from interface: EnhancedConnection

Returns the DestinationSource object which can be used to listen to destinations being created or destroyed or to enquire about the current destinations available on the broker

Specified by:

getDestinationSource in interface EnhancedConnection

Returns:

a lazily created destination source

Throws:

JMSException

onTemporaryQueueCreate

public void onTemporaryQueueCreate(TemporaryQueue tempQueue)

Called on successful creation of a new TemporaryQueue.

Parameters:

tempQueue - The TemporaryQueue just created.

onTemporaryTopicCreate

public void onTemporaryTopicCreate(TemporaryTopic tempTopic)

Called on successful creation of a new TemporaryTopic.

Parameters:

tempTopic - The TemporaryTopic just created.

onSessionClosed

public void onSessionClosed(PooledSession session)

Called when the PooledSession is closed.

Parameters:

session - The PooledSession that has been closed.

getConnection

public ActiveMQConnection getConnection()
                                 throws JMSException

Throws:

JMSException

assertNotClosed

protected void assertNotClosed()
                        throws AlreadyClosedException

Throws:

AlreadyClosedException

createSession

protected ActiveMQSession createSession(SessionKey key)
                                 throws JMSException

Throws:

JMSException

toString

public String toString()

Overrides:

toString in class Object

cleanupConnectionTemporaryDestinations

protected void cleanupConnectionTemporaryDestinations()

Remove all of the temporary destinations created for this connection. This is important since the underlying connection may be reused over a long period of time, accumulating all of the temporary destinations from each use. However, from the perspective of the lifecycle from the client's view, close() closes the connection and, therefore, deletes all of the temporary destinations created.

cleanupAllLoanedSessions

protected void cleanupAllLoanedSessions()

The PooledSession tracks all Sessions that it created and now we close them. Closing the PooledSession will return the internal Session to the Pool of Session after cleaning up all the resources that the Session had allocated for this PooledConnection.

getNumSessions

public int getNumSessions()

Returns:

the total number of Pooled session including idle sessions that are not currently loaned out to any client.

getNumActiveSessions

public int getNumActiveSessions()

Returns:

the number of Sessions that are currently checked out of this Connection's session pool.

getNumtIdleSessions

public int getNumtIdleSessions()

Returns:

the number of Sessions that are idle in this Connection's sessions pool.