org.springframework.jms.connection

Class ConnectionFactoryUtils

java.lang.Object

org.springframework.jms.connection.ConnectionFactoryUtils

public abstract class ConnectionFactoryUtils
extends java.lang.Object

Helper class for managing a JMS javax.jms.ConnectionFactory, in particular for obtaining transactional JMS resources for a given ConnectionFactory.

Mainly for internal use within the framework. Used by JmsTemplate as well as DefaultMessageListenerContainer.

Since:

2.0

Author:

Juergen Hoeller

See Also:

SmartConnectionFactory

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	ConnectionFactoryUtils.JmsResourceSynchronization Callback for resource cleanup at the end of a non-native JMS transaction (e.g.
static interface	ConnectionFactoryUtils.ResourceFactory Callback interface for resource creation.

Field Summary

Fields

Modifier and Type	Field and Description
private static Log	logger

Constructor Summary

Constructors

Constructor and Description
ConnectionFactoryUtils()

Method Summary

Modifier and Type	Method and Description
static Session	doGetTransactionalSession(ConnectionFactory connectionFactory, ConnectionFactoryUtils.ResourceFactory resourceFactory) Obtain a JMS Session that is synchronized with the current transaction, if any.
static Session	doGetTransactionalSession(ConnectionFactory connectionFactory, ConnectionFactoryUtils.ResourceFactory resourceFactory, boolean startConnection) Obtain a JMS Session that is synchronized with the current transaction, if any.
static Session	getTargetSession(Session session) Return the innermost target Session of the given Session.
static QueueSession	getTransactionalQueueSession(QueueConnectionFactory cf, QueueConnection existingCon, boolean synchedLocalTransactionAllowed) Obtain a JMS QueueSession that is synchronized with the current transaction, if any.
static Session	getTransactionalSession(ConnectionFactory cf, Connection existingCon, boolean synchedLocalTransactionAllowed) Obtain a JMS Session that is synchronized with the current transaction, if any.
static TopicSession	getTransactionalTopicSession(TopicConnectionFactory cf, TopicConnection existingCon, boolean synchedLocalTransactionAllowed) Obtain a JMS TopicSession that is synchronized with the current transaction, if any.
static boolean	isSessionTransactional(Session session, ConnectionFactory cf) Determine whether the given JMS Session is transactional, that is, bound to the current thread by Spring's transaction facilities.
static void	releaseConnection(Connection con, ConnectionFactory cf, boolean started) Release the given Connection, stopping it (if necessary) and eventually closing it.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final Log logger

Constructor Detail

ConnectionFactoryUtils

public ConnectionFactoryUtils()

Method Detail

releaseConnection

public static void releaseConnection(Connection con,
                                     ConnectionFactory cf,
                                     boolean started)

Release the given Connection, stopping it (if necessary) and eventually closing it.

Checks SmartConnectionFactory.shouldStop(Connection), if available. This is essentially a more sophisticated version of JmsUtils.closeConnection(Connection).

Parameters:

con - the Connection to release (if this is null, the call will be ignored)

cf - the ConnectionFactory that the Connection was obtained from (may be null)

started - whether the Connection might have been started by the application

See Also:

SmartConnectionFactory.shouldStop(Connection), JmsUtils.closeConnection(Connection)

getTargetSession

public static Session getTargetSession(Session session)

Return the innermost target Session of the given Session. If the given Session is a proxy, it will be unwrapped until a non-proxy Session is found. Otherwise, the passed-in Session will be returned as-is.

Parameters:

session - the Session proxy to unwrap

Returns:

the innermost target Session, or the passed-in one if no proxy

See Also:

SessionProxy.getTargetSession()

isSessionTransactional

public static boolean isSessionTransactional(Session session,
                                             ConnectionFactory cf)

Determine whether the given JMS Session is transactional, that is, bound to the current thread by Spring's transaction facilities.

Parameters:

session - the JMS Session to check

cf - the JMS ConnectionFactory that the Session originated from

Returns:

whether the Session is transactional

getTransactionalSession

public static Session getTransactionalSession(ConnectionFactory cf,
                                              Connection existingCon,
                                              boolean synchedLocalTransactionAllowed)
                                       throws JMSException

Obtain a JMS Session that is synchronized with the current transaction, if any.

Parameters:

cf - the ConnectionFactory to obtain a Session for

existingCon - the existing JMS Connection to obtain a Session for (may be null)

synchedLocalTransactionAllowed - whether to allow for a local JMS transaction that is synchronized with a Spring-managed transaction (where the main transaction might be a JDBC-based one for a specific DataSource, for example), with the JMS transaction committing right after the main transaction. If not allowed, the given ConnectionFactory needs to handle transaction enlistment underneath the covers.

Returns:

the transactional Session, or null if none found

Throws:

JMSException - in case of JMS failure

getTransactionalQueueSession

public static QueueSession getTransactionalQueueSession(QueueConnectionFactory cf,
                                                        QueueConnection existingCon,
                                                        boolean synchedLocalTransactionAllowed)
                                                 throws JMSException

Obtain a JMS QueueSession that is synchronized with the current transaction, if any.

Mainly intended for use with the JMS 1.0.2 API.

Parameters:

cf - the ConnectionFactory to obtain a Session for

existingCon - the existing JMS Connection to obtain a Session for (may be null)

synchedLocalTransactionAllowed - whether to allow for a local JMS transaction that is synchronized with a Spring-managed transaction (where the main transaction might be a JDBC-based one for a specific DataSource, for example), with the JMS transaction committing right after the main transaction. If not allowed, the given ConnectionFactory needs to handle transaction enlistment underneath the covers.

Returns:

the transactional Session, or null if none found

Throws:

JMSException - in case of JMS failure

getTransactionalTopicSession

public static TopicSession getTransactionalTopicSession(TopicConnectionFactory cf,
                                                        TopicConnection existingCon,
                                                        boolean synchedLocalTransactionAllowed)
                                                 throws JMSException

Obtain a JMS TopicSession that is synchronized with the current transaction, if any.

Mainly intended for use with the JMS 1.0.2 API.

Parameters:

cf - the ConnectionFactory to obtain a Session for

existingCon - the existing JMS Connection to obtain a Session for (may be null)

synchedLocalTransactionAllowed - whether to allow for a local JMS transaction that is synchronized with a Spring-managed transaction (where the main transaction might be a JDBC-based one for a specific DataSource, for example), with the JMS transaction committing right after the main transaction. If not allowed, the given ConnectionFactory needs to handle transaction enlistment underneath the covers.

Returns:

the transactional Session, or null if none found

Throws:

JMSException - in case of JMS failure

doGetTransactionalSession

public static Session doGetTransactionalSession(ConnectionFactory connectionFactory,
                                                ConnectionFactoryUtils.ResourceFactory resourceFactory)
                                         throws JMSException

Obtain a JMS Session that is synchronized with the current transaction, if any.

This doGetTransactionalSession variant always starts the underlying JMS Connection, assuming that the Session will be used for receiving messages.

Parameters:

connectionFactory - the JMS ConnectionFactory to bind for (used as TransactionSynchronizationManager key)

resourceFactory - the ResourceFactory to use for extracting or creating JMS resources

Returns:

the transactional Session, or null if none found

Throws:

JMSException - in case of JMS failure

See Also:

#doGetTransactionalSession(javax.jms.ConnectionFactory, ResourceFactory, boolean)

doGetTransactionalSession

public static Session doGetTransactionalSession(ConnectionFactory connectionFactory,
                                                ConnectionFactoryUtils.ResourceFactory resourceFactory,
                                                boolean startConnection)
                                         throws JMSException

Obtain a JMS Session that is synchronized with the current transaction, if any.

Parameters:

connectionFactory - the JMS ConnectionFactory to bind for (used as TransactionSynchronizationManager key)

resourceFactory - the ResourceFactory to use for extracting or creating JMS resources

startConnection - whether the underlying JMS Connection approach should be started in order to allow for receiving messages. Note that a reused Connection may already have been started before, even if this flag is false.

Returns:

the transactional Session, or null if none found

Throws:

JMSException - in case of JMS failure