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WebLogicJtaTransactionManager (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版

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org.springframework.transaction.jta
Class WebLogicJtaTransactionManager

java.lang.Object
  org.springframework.transaction.support.AbstractPlatformTransactionManager
      org.springframework.transaction.jta.JtaTransactionManager
          org.springframework.transaction.jta.WebLogicJtaTransactionManager

All Implemented Interfaces:

Serializable, InitializingBean, PlatformTransactionManager

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public class WebLogicJtaTransactionManager
extends JtaTransactionManager

Special JtaTransactionManager variant for BEA WebLogic (7.0, 8.1 and higher). Supports the full power of Spring's transaction definitions on WebLogic's transaction coordinator, beyond standard JTA: transaction names, per-transaction isolation levels, and proper resuming of transactions in all cases.

Uses WebLogic's special begin(name) method to start a JTA transaction, in order to make Spring-driven transactions visible in WebLogic's transaction monitor. In case of Spring's declarative transactions, the exposed name will (by default) be the fully-qualified class name + "." + method name.

Supports a per-transaction isolation level through WebLogic's corresponding JTA transaction property "ISOLATION LEVEL". This will apply the specified isolation level (e.g. ISOLATION_SERIALIZABLE) to all JDBC Connections that participate in the given transaction.

Invokes WebLogic's special forceResume method if standard JTA resume failed, to also resume if the target transaction was marked rollback-only. If you're not relying on this feature of transaction suspension in the first place, Spring's standard JtaTransactionManager will behave properly too.

Automatically detects WebLogic Server 7.0 or 8.1+ and adapts accordingly. Usage on a WebLogic client is also supported, although with restricted functionality: transaction names cannot be applied there.

By default, the JTA UserTransaction and TransactionManager handles are fetched directly from WebLogic's TransactionHelper (on 8.1+) or TxHelper (on 7.0). This can be overridden by specifying "userTransaction"/"userTransactionName" and "transactionManager"/"transactionManagerName", passing in existing handles or specifying corresponding JNDI locations to look up.

Since:

1.1

Author:

Juergen Hoeller

See Also:

TransactionDefinition.getName(), TransactionDefinition.getIsolationLevel(), weblogic.transaction.UserTransaction#begin(String), weblogic.transaction.Transaction#setProperty, weblogic.transaction.TransactionManager#forceResume, weblogic.transaction.TransactionHelper, weblogic.transaction.TxHelper, Serialized Form

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Nested Class Summary

 

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

 

Field Summary

 

Fields inherited from class org.springframework.transaction.jta.JtaTransactionManager
DEFAULT_USER_TRANSACTION_NAME, FALLBACK_TRANSACTION_MANAGER_NAMES

 

Fields inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager
logger, SYNCHRONIZATION_ALWAYS, SYNCHRONIZATION_NEVER, SYNCHRONIZATION_ON_ACTUAL_TRANSACTION

 

Constructor Summary
WebLogicJtaTransactionManager()

 

Method Summary
void	afterPropertiesSet()           Initialize the UserTransaction as well as the TransactionManager handle.
protected  void	doJtaBegin(JtaTransactionObject txObject, TransactionDefinition definition)           Perform a JTA begin on the JTA UserTransaction or TransactionManager.
protected  void	doJtaResume(JtaTransactionObject txObject, Object suspendedTransaction)           Perform a JTA resume on the JTA TransactionManager.
protected  TransactionManager	retrieveTransactionManager()           Allows subclasses to retrieve the JTA TransactionManager in a vendor-specific manner.
protected  UserTransaction	retrieveUserTransaction()           Allows subclasses to retrieve the JTA UserTransaction in a vendor-specific manner.

 

Methods inherited from class org.springframework.transaction.jta.JtaTransactionManager

applyIsolationLevel, applyTimeout, buildUserTransaction, doBegin, doCommit, doGetJtaTransaction, doGetTransaction, doJtaSuspend, doRegisterAfterCompletionWithJtaTransaction, doResume, doRollback, doSetRollbackOnly, doSuspend, findTransactionManager, findUserTransaction, getJndiEnvironment, getJndiTemplate, getTransactionManager, getUserTransaction, initUserTransactionAndTransactionManager, isExistingTransaction, lookupTransactionManager, lookupUserTransaction, registerAfterCompletionWithExistingTransaction, setAllowCustomIsolationLevels, setAutodetectTransactionManager, setAutodetectUserTransaction, setCacheUserTransaction, setJndiEnvironment, setJndiTemplate, setTransactionManager, setTransactionManagerName, setUserTransaction, setUserTransactionName, shouldCommitOnGlobalRollbackOnly, useSavepointForNestedTransaction

 

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

commit, determineTimeout, doCleanupAfterCompletion, getDefaultTimeout, getTransaction, getTransactionSynchronization, invokeAfterCompletion, isFailEarlyOnGlobalRollbackOnly, isGlobalRollbackOnParticipationFailure, isNestedTransactionAllowed, isRollbackOnCommitFailure, newTransactionStatus, resume, rollback, setDefaultTimeout, setFailEarlyOnGlobalRollbackOnly, setGlobalRollbackOnParticipationFailure, setNestedTransactionAllowed, setRollbackOnCommitFailure, setTransactionSynchronization, setTransactionSynchronizationName, suspend, triggerBeforeCommit, triggerBeforeCompletion

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

WebLogicJtaTransactionManager

public WebLogicJtaTransactionManager()

Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws TransactionSystemException

Description copied from class: JtaTransactionManager

Initialize the UserTransaction as well as the TransactionManager handle.

Specified by:

afterPropertiesSet in interface InitializingBean

Overrides:

afterPropertiesSet in class JtaTransactionManager

Throws:

TransactionSystemException

See Also:

JtaTransactionManager.initUserTransactionAndTransactionManager()

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retrieveUserTransaction

protected UserTransaction retrieveUserTransaction()
                                           throws TransactionSystemException

Description copied from class: JtaTransactionManager

Allows subclasses to retrieve the JTA UserTransaction in a vendor-specific manner. Only called if no "userTransaction" or "userTransactionName" specified.

The default implementation simply returns null.

Overrides:

retrieveUserTransaction in class JtaTransactionManager

Returns:

the JTA UserTransaction handle to use, or null if none found

Throws:

TransactionSystemException - in case of errors

See Also:

JtaTransactionManager.setUserTransaction(javax.transaction.UserTransaction), JtaTransactionManager.setUserTransactionName(java.lang.String)

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retrieveTransactionManager

protected TransactionManager retrieveTransactionManager()
                                                 throws TransactionSystemException

Description copied from class: JtaTransactionManager

Allows subclasses to retrieve the JTA TransactionManager in a vendor-specific manner. Only called if no "transactionManager" or "transactionManagerName" specified.

The default implementation simply returns null.

Overrides:

retrieveTransactionManager in class JtaTransactionManager

Returns:

the JTA TransactionManager handle to use, or null if none found

Throws:

TransactionSystemException - in case of errors

See Also:

JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager), JtaTransactionManager.setTransactionManagerName(java.lang.String)

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doJtaBegin

protected void doJtaBegin(JtaTransactionObject txObject,
                          TransactionDefinition definition)
                   throws NotSupportedException,
                          SystemException

Description copied from class: JtaTransactionManager

Perform a JTA begin on the JTA UserTransaction or TransactionManager.

This implementation only supports standard JTA functionality: that is, no per-transaction isolation levels and no transaction names. Can be overridden in subclasses, for specific JTA implementations.

Calls applyIsolationLevel and applyTimeout before invoking the UserTransaction's begin method.

Overrides:

doJtaBegin in class JtaTransactionManager

Parameters:

txObject - the JtaTransactionObject containing the UserTransaction

definition - TransactionDefinition instance, describing propagation behavior, isolation level, read-only flag, timeout, and transaction name

Throws:

NotSupportedException - if thrown by JTA methods

SystemException - if thrown by JTA methods

See Also:

JtaTransactionManager.getUserTransaction(), JtaTransactionManager.getTransactionManager(), JtaTransactionManager.applyIsolationLevel(org.springframework.transaction.jta.JtaTransactionObject, int), JtaTransactionManager.applyTimeout(org.springframework.transaction.jta.JtaTransactionObject, int), JtaTransactionObject.getUserTransaction(), UserTransaction.setTransactionTimeout(int), UserTransaction.begin()

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doJtaResume

protected void doJtaResume(JtaTransactionObject txObject,
                           Object suspendedTransaction)
                    throws InvalidTransactionException,
                           SystemException

Description copied from class: JtaTransactionManager

Perform a JTA resume on the JTA TransactionManager.

Can be overridden in subclasses, for specific JTA implementations.

Overrides:

doJtaResume in class JtaTransactionManager

Parameters:

txObject - the JtaTransactionObject containing the UserTransaction

suspendedTransaction - the suspended JTA Transaction object

Throws:

InvalidTransactionException - if thrown by JTA methods

SystemException - if thrown by JTA methods

See Also:

JtaTransactionManager.getTransactionManager(), TransactionManager.resume(javax.transaction.Transaction)

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