org.springframework.jms.connection

Class JmsTransactionManager

java.lang.Object

org.springframework.transaction.support.AbstractPlatformTransactionManager

org.springframework.jms.connection.JmsTransactionManager

All Implemented Interfaces:

Serializable, org.springframework.beans.factory.InitializingBean, org.springframework.transaction.PlatformTransactionManager, org.springframework.transaction.support.ResourceTransactionManager, org.springframework.transaction.TransactionManager

public class JmsTransactionManager
extends org.springframework.transaction.support.AbstractPlatformTransactionManager
implements org.springframework.transaction.support.ResourceTransactionManager, org.springframework.beans.factory.InitializingBean

PlatformTransactionManager implementation for a single JMS ConnectionFactory. Binds a JMS Connection/Session pair from the specified ConnectionFactory to the thread, potentially allowing for one thread-bound Session per ConnectionFactory.

This local strategy is an alternative to executing JMS operations within JTA transactions. Its advantage is that it is able to work in any environment, for example a standalone application or a test suite, with any message broker as target. However, this strategy is not able to provide XA transactions, for example in order to share transactions between messaging and database access. A full JTA/XA setup is required for XA transactions, typically using Spring's org.springframework.transaction.jta.JtaTransactionManager as strategy.

Application code is required to retrieve the transactional JMS Session via ConnectionFactoryUtils.getTransactionalSession(javax.jms.ConnectionFactory, javax.jms.Connection, boolean) instead of a standard Java EE-style ConnectionFactory.createConnection() call with subsequent Session creation. Spring's JmsTemplate will autodetect a thread-bound Session and automatically participate in it.

Alternatively, you can allow application code to work with the standard Java EE-style lookup pattern on a ConnectionFactory, for example for legacy code that is not aware of Spring at all. In that case, define a TransactionAwareConnectionFactoryProxy for your target ConnectionFactory, which will automatically participate in Spring-managed transactions.

The use of CachingConnectionFactory as a target for this transaction manager is strongly recommended. CachingConnectionFactory uses a single JMS Connection for all JMS access in order to avoid the overhead of repeated Connection creation, as well as maintaining a cache of Sessions. Each transaction will then share the same JMS Connection, while still using its own individual JMS Session.

The use of a raw target ConnectionFactory would not only be inefficient because of the lack of resource reuse. It might also lead to strange effects when your JMS driver doesn't accept MessageProducer.close() calls and/or MessageConsumer.close() calls before Session.commit(), with the latter supposed to commit all the messages that have been sent through the producer handle and received through the consumer handle. As a safe general solution, always pass in a CachingConnectionFactory into this transaction manager's "connectionFactory" property.

Transaction synchronization is turned off by default, as this manager might be used alongside a datastore-based Spring transaction manager such as the JDBC org.springframework.jdbc.datasource.DataSourceTransactionManager, which has stronger needs for synchronization.

Since:

1.1

Author:

Juergen Hoeller

See Also:

ConnectionFactoryUtils.getTransactionalSession(javax.jms.ConnectionFactory, javax.jms.Connection, boolean), TransactionAwareConnectionFactoryProxy, JmsTemplate, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager

org.springframework.transaction.support.AbstractPlatformTransactionManager.SuspendedResourcesHolder

Field Summary

Fields inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager

logger, SYNCHRONIZATION_ALWAYS, SYNCHRONIZATION_NEVER, SYNCHRONIZATION_ON_ACTUAL_TRANSACTION

Constructor Summary

Constructors

Constructor and Description
JmsTransactionManager() Create a new JmsTransactionManager for bean-style usage.
JmsTransactionManager(ConnectionFactory connectionFactory) Create a new JmsTransactionManager, given a ConnectionFactory.

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Make sure the ConnectionFactory has been set.
protected Connection	createConnection() Create a JMS Connection via this template's ConnectionFactory.
protected Session	createSession(Connection con) Create a JMS Session for the given Connection.
protected void	doBegin(Object transaction, org.springframework.transaction.TransactionDefinition definition)
protected void	doCleanupAfterCompletion(Object transaction)
protected void	doCommit(org.springframework.transaction.support.DefaultTransactionStatus status)
protected Object	doGetTransaction()
protected void	doResume(Object transaction, Object suspendedResources)
protected void	doRollback(org.springframework.transaction.support.DefaultTransactionStatus status)
protected void	doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus status)
protected Object	doSuspend(Object transaction)
ConnectionFactory	getConnectionFactory() Return the JMS ConnectionFactory that this instance should manage transactions for.
Object	getResourceFactory()
protected boolean	isExistingTransaction(Object transaction)
protected ConnectionFactory	obtainConnectionFactory() Obtain the ConnectionFactory for actual use.
void	setConnectionFactory(ConnectionFactory cf) Set the JMS ConnectionFactory that this instance should manage transactions for.
void	setLazyResourceRetrieval(boolean lazyResourceRetrieval) Specify whether this transaction manager should lazily retrieve a JMS Connection and Session on access within a transaction (true).

Methods inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager

commit, determineTimeout, getDefaultTimeout, getTransaction, getTransactionSynchronization, invokeAfterCompletion, isFailEarlyOnGlobalRollbackOnly, isGlobalRollbackOnParticipationFailure, isNestedTransactionAllowed, isRollbackOnCommitFailure, isValidateExistingTransaction, newTransactionStatus, prepareForCommit, prepareSynchronization, prepareTransactionStatus, registerAfterCompletionWithExistingTransaction, resume, rollback, setDefaultTimeout, setFailEarlyOnGlobalRollbackOnly, setGlobalRollbackOnParticipationFailure, setNestedTransactionAllowed, setRollbackOnCommitFailure, setTransactionSynchronization, setTransactionSynchronizationName, setValidateExistingTransaction, shouldCommitOnGlobalRollbackOnly, suspend, triggerBeforeCommit, triggerBeforeCompletion, useSavepointForNestedTransaction

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.transaction.PlatformTransactionManager

commit, getTransaction, rollback

Constructor Detail

JmsTransactionManager

public JmsTransactionManager()

Create a new JmsTransactionManager for bean-style usage.

Note: The ConnectionFactory has to be set before using the instance. This constructor can be used to prepare a JmsTemplate via a BeanFactory, typically setting the ConnectionFactory via setConnectionFactory.

Turns off transaction synchronization by default, as this manager might be used alongside a datastore-based Spring transaction manager like DataSourceTransactionManager, which has stronger needs for synchronization. Only one manager is allowed to drive synchronization at any point of time.

See Also:

setConnectionFactory(javax.jms.ConnectionFactory), AbstractPlatformTransactionManager.setTransactionSynchronization(int)

JmsTransactionManager

public JmsTransactionManager(ConnectionFactory connectionFactory)

Create a new JmsTransactionManager, given a ConnectionFactory.

Parameters:

connectionFactory - the ConnectionFactory to obtain connections from

Method Detail

setConnectionFactory

public void setConnectionFactory(@Nullable
                                 ConnectionFactory cf)

Set the JMS ConnectionFactory that this instance should manage transactions for.

getConnectionFactory

@Nullable
public ConnectionFactory getConnectionFactory()

Return the JMS ConnectionFactory that this instance should manage transactions for.

obtainConnectionFactory

protected final ConnectionFactory obtainConnectionFactory()

Obtain the ConnectionFactory for actual use.

Returns:

the ConnectionFactory (never null)

Throws:

IllegalStateException - in case of no ConnectionFactory set

Since:

5.0

setLazyResourceRetrieval

public void setLazyResourceRetrieval(boolean lazyResourceRetrieval)

Specify whether this transaction manager should lazily retrieve a JMS Connection and Session on access within a transaction (true). By default, it will eagerly create a JMS Connection and Session at transaction begin (false).

Since:

5.1.6

See Also:

JmsResourceHolder.getConnection(), JmsResourceHolder.getSession()

afterPropertiesSet

public void afterPropertiesSet()

Make sure the ConnectionFactory has been set.

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

getResourceFactory

public Object getResourceFactory()

Specified by:

getResourceFactory in interface org.springframework.transaction.support.ResourceTransactionManager

doGetTransaction

protected Object doGetTransaction()

Specified by:

doGetTransaction in class org.springframework.transaction.support.AbstractPlatformTransactionManager

isExistingTransaction

protected boolean isExistingTransaction(Object transaction)

Overrides:

isExistingTransaction in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doBegin

protected void doBegin(Object transaction,
                       org.springframework.transaction.TransactionDefinition definition)

Specified by:

doBegin in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doSuspend

protected Object doSuspend(Object transaction)

Overrides:

doSuspend in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doResume

protected void doResume(@Nullable
                        Object transaction,
                        Object suspendedResources)

Overrides:

doResume in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doCommit

protected void doCommit(org.springframework.transaction.support.DefaultTransactionStatus status)

Specified by:

doCommit in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doRollback

protected void doRollback(org.springframework.transaction.support.DefaultTransactionStatus status)

Specified by:

doRollback in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doSetRollbackOnly

protected void doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus status)

Overrides:

doSetRollbackOnly in class org.springframework.transaction.support.AbstractPlatformTransactionManager

doCleanupAfterCompletion

protected void doCleanupAfterCompletion(Object transaction)

Overrides:

doCleanupAfterCompletion in class org.springframework.transaction.support.AbstractPlatformTransactionManager

createConnection

protected Connection createConnection()
                               throws JMSException

Create a JMS Connection via this template's ConnectionFactory.

This implementation uses JMS 1.1 API.

Returns:

the new JMS Connection

Throws:

JMSException - if thrown by JMS API methods

createSession

protected Session createSession(Connection con)
                         throws JMSException

Create a JMS Session for the given Connection.

This implementation uses JMS 1.1 API.

Parameters:

con - the JMS Connection to create a Session for

Returns:

the new JMS Session

Throws:

JMSException - if thrown by JMS API methods