public class JmsTransactionManager extends AbstractPlatformTransactionManager implements ResourceTransactionManager, 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
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 DataSourceTransactionManager,
which has stronger needs for synchronization.
ConnectionFactoryUtils.getTransactionalSession(javax.jms.ConnectionFactory, javax.jms.Connection, boolean),
TransactionAwareConnectionFactoryProxy,
JmsTemplate,
Serialized FormAbstractPlatformTransactionManager.SuspendedResourcesHolderlogger, SYNCHRONIZATION_ALWAYS, SYNCHRONIZATION_NEVER, SYNCHRONIZATION_ON_ACTUAL_TRANSACTION| Constructor and Description |
|---|
JmsTransactionManager()
Create a new JmsTransactionManager for bean-style usage.
|
JmsTransactionManager(ConnectionFactory connectionFactory)
Create a new JmsTransactionManager, given a ConnectionFactory.
|
| 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,
TransactionDefinition definition)
Begin a new transaction with semantics according to the given transaction
definition.
|
protected void |
doCleanupAfterCompletion(Object transaction)
Cleanup resources after transaction completion.
|
protected void |
doCommit(DefaultTransactionStatus status)
Perform an actual commit of the given transaction.
|
protected Object |
doGetTransaction()
Return a transaction object for the current transaction state.
|
protected void |
doResume(Object transaction,
Object suspendedResources)
Resume the resources of the current transaction.
|
protected void |
doRollback(DefaultTransactionStatus status)
Perform an actual rollback of the given transaction.
|
protected void |
doSetRollbackOnly(DefaultTransactionStatus status)
Set the given transaction rollback-only.
|
protected Object |
doSuspend(Object transaction)
Suspend the resources of the current transaction.
|
ConnectionFactory |
getConnectionFactory()
Return the JMS ConnectionFactory that this instance should manage transactions for.
|
Object |
getResourceFactory()
Return the resource factory that this transaction manager operates on,
e.g.
|
protected boolean |
isExistingTransaction(Object transaction)
Check if the given transaction object indicates an existing transaction
(that is, a transaction which has already started).
|
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). |
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, useSavepointForNestedTransactionclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitcommit, getTransaction, rollbackpublic JmsTransactionManager()
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.
public JmsTransactionManager(ConnectionFactory connectionFactory)
connectionFactory - the ConnectionFactory to obtain connections frompublic void setConnectionFactory(@Nullable ConnectionFactory cf)
@Nullable public ConnectionFactory getConnectionFactory()
protected final ConnectionFactory obtainConnectionFactory()
null)IllegalStateException - in case of no ConnectionFactory setpublic void setLazyResourceRetrieval(boolean lazyResourceRetrieval)
true).
By default, it will eagerly create a JMS Connection and Session at
transaction begin (false).JmsResourceHolder.getConnection(),
JmsResourceHolder.getSession()public void afterPropertiesSet()
afterPropertiesSet in interface InitializingBeanpublic Object getResourceFactory()
ResourceTransactionManagerThis target resource factory is usually used as resource key for
TransactionSynchronizationManager's resource bindings per thread.
getResourceFactory in interface ResourceTransactionManagernull)TransactionSynchronizationManager.bindResource(java.lang.Object, java.lang.Object),
TransactionSynchronizationManager.getResource(java.lang.Object)protected Object doGetTransaction()
AbstractPlatformTransactionManagerThe returned object will usually be specific to the concrete transaction manager implementation, carrying corresponding transaction state in a modifiable fashion. This object will be passed into the other template methods (e.g. doBegin and doCommit), either directly or as part of a DefaultTransactionStatus instance.
The returned object should contain information about any existing
transaction, that is, a transaction that has already started before the
current getTransaction call on the transaction manager.
Consequently, a doGetTransaction implementation will usually
look for an existing transaction and store corresponding state in the
returned transaction object.
doGetTransaction in class AbstractPlatformTransactionManagerAbstractPlatformTransactionManager.doBegin(java.lang.Object, org.springframework.transaction.TransactionDefinition),
AbstractPlatformTransactionManager.doCommit(org.springframework.transaction.support.DefaultTransactionStatus),
AbstractPlatformTransactionManager.doRollback(org.springframework.transaction.support.DefaultTransactionStatus),
DefaultTransactionStatus.getTransaction()protected boolean isExistingTransaction(Object transaction)
AbstractPlatformTransactionManagerThe result will be evaluated according to the specified propagation behavior for the new transaction. An existing transaction might get suspended (in case of PROPAGATION_REQUIRES_NEW), or the new transaction might participate in the existing one (in case of PROPAGATION_REQUIRED).
The default implementation returns false, assuming that
participating in existing transactions is generally not supported.
Subclasses are of course encouraged to provide such support.
isExistingTransaction in class AbstractPlatformTransactionManagertransaction - transaction object returned by doGetTransactionAbstractPlatformTransactionManager.doGetTransaction()protected void doBegin(Object transaction, TransactionDefinition definition)
AbstractPlatformTransactionManagerThis method gets called when the transaction manager has decided to actually start a new transaction. Either there wasn't any transaction before, or the previous transaction has been suspended.
A special scenario is a nested transaction without savepoint: If
useSavepointForNestedTransaction() returns "false", this method
will be called to start a nested transaction when necessary. In such a context,
there will be an active transaction: The implementation of this method has
to detect this and start an appropriate nested transaction.
doBegin in class AbstractPlatformTransactionManagertransaction - transaction object returned by doGetTransactiondefinition - a TransactionDefinition instance, describing propagation
behavior, isolation level, read-only flag, timeout, and transaction nameprotected Object doSuspend(Object transaction)
AbstractPlatformTransactionManagerThe default implementation throws a TransactionSuspensionNotSupportedException, assuming that transaction suspension is generally not supported.
doSuspend in class AbstractPlatformTransactionManagertransaction - transaction object returned by doGetTransactionAbstractPlatformTransactionManager.doResume(java.lang.Object, java.lang.Object)protected void doResume(@Nullable Object transaction, Object suspendedResources)
AbstractPlatformTransactionManagerThe default implementation throws a TransactionSuspensionNotSupportedException, assuming that transaction suspension is generally not supported.
doResume in class AbstractPlatformTransactionManagertransaction - transaction object returned by doGetTransactionsuspendedResources - the object that holds suspended resources,
as returned by doSuspendAbstractPlatformTransactionManager.doSuspend(java.lang.Object)protected void doCommit(DefaultTransactionStatus status)
AbstractPlatformTransactionManagerAn implementation does not need to check the "new transaction" flag or the rollback-only flag; this will already have been handled before. Usually, a straight commit will be performed on the transaction object contained in the passed-in status.
doCommit in class AbstractPlatformTransactionManagerstatus - the status representation of the transactionDefaultTransactionStatus.getTransaction()protected void doRollback(DefaultTransactionStatus status)
AbstractPlatformTransactionManagerAn implementation does not need to check the "new transaction" flag; this will already have been handled before. Usually, a straight rollback will be performed on the transaction object contained in the passed-in status.
doRollback in class AbstractPlatformTransactionManagerstatus - the status representation of the transactionDefaultTransactionStatus.getTransaction()protected void doSetRollbackOnly(DefaultTransactionStatus status)
AbstractPlatformTransactionManagerThe default implementation throws an IllegalTransactionStateException, assuming that participating in existing transactions is generally not supported. Subclasses are of course encouraged to provide such support.
doSetRollbackOnly in class AbstractPlatformTransactionManagerstatus - the status representation of the transactionprotected void doCleanupAfterCompletion(Object transaction)
AbstractPlatformTransactionManagerCalled after doCommit and doRollback execution,
on any outcome. The default implementation does nothing.
Should not throw any exceptions but just issue warnings on errors.
doCleanupAfterCompletion in class AbstractPlatformTransactionManagertransaction - transaction object returned by doGetTransactionprotected Connection createConnection() throws JMSException
This implementation uses JMS 1.1 API.
JMSException - if thrown by JMS API methodsprotected Session createSession(Connection con) throws JMSException
This implementation uses JMS 1.1 API.
con - the JMS Connection to create a Session forJMSException - if thrown by JMS API methods