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WebLogicServerTransactionManagerFactoryBean (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.transaction.jta
Class WebLogicServerTransactionManagerFactoryBean

java.lang.Object
  org.springframework.transaction.jta.WebLogicServerTransactionManagerFactoryBean

All Implemented Interfaces:

FactoryBean

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public class WebLogicServerTransactionManagerFactoryBean
extends Object
implements FactoryBean

FactoryBean that retrieves the internal JTA TransactionManager of BEA's WebLogic version 7.0, which is required for proper transaction suspension support on that application server version.

Uses WebLogic TxHelper's static access methods to obtain the server's internal JTA TransactionManager.

This class doesn't need be used with WebLogic 8.1 or higher, since the regular JNDI lookup is sufficient there: it returns a JTA TransactionManager that can handle all transaction management tasks properly.

Note that as of Spring 1.2, this class is effectively superseded by WebLogicJtaTransactionManager's autodetection of WebLogic 7.0 or 8.1+. It is only kept as a way to explicitly expose the JTA TransactionManager on WebLogic 7.0, for non-Spring code that needs access to this facility.

For typical scenarios, use Spring's WebLogicJtaTransactionManager as-is and do not bother with setting up this FactoryBean.

Since:

1.1

Author:

Thomas Risberg, Juergen Hoeller

See Also:

WebLogicJtaTransactionManager, JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager), weblogic.transaction.TxHelper#getTransactionManager

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Field Summary
protected  Log	logger

 

Constructor Summary
WebLogicServerTransactionManagerFactoryBean()           This constructor retrieves the WebLogic TransactionManager factory class, so we can get access to the JTA TransactionManager.

 

Method Summary
Object	getObject()           Return an instance (possibly shared or independent) of the object managed by this factory.
Class	getObjectType()           Return the type of object that this FactoryBean creates, or null if not known in advance.
boolean	isSingleton()           Is the bean managed by this factory a singleton or a prototype?

 

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

 

Field Detail

logger

protected final Log logger

Constructor Detail

WebLogicServerTransactionManagerFactoryBean

public WebLogicServerTransactionManagerFactoryBean()
                                            throws TransactionSystemException

This constructor retrieves the WebLogic TransactionManager factory class, so we can get access to the JTA TransactionManager.

Throws:

TransactionSystemException

Method Detail

getObject

public Object getObject()

Description copied from interface: FactoryBean

Return an instance (possibly shared or independent) of the object managed by this factory. As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

If this method returns null, the factory will consider the FactoryBean as not fully initialized and throw a corresponding FactoryBeanNotInitializedException.

Specified by:

getObject in interface FactoryBean

Returns:

an instance of the bean (should not be null; a null value will be considered as an indication of incomplete initialization)

See Also:

FactoryBeanNotInitializedException

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getObjectType

public Class getObjectType()

Description copied from interface: FactoryBean

Return the type of object that this FactoryBean creates, or null if not known in advance. This allows to check for specific types of beans without instantiating objects, for example on autowiring.

For a singleton, this should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:

getObjectType in interface FactoryBean

Returns:

the type of object that this FactoryBean creates, or null if not known at the time of the call

See Also:

ListableBeanFactory.getBeansOfType(java.lang.Class)

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isSingleton

public boolean isSingleton()

Description copied from interface: FactoryBean

Is the bean managed by this factory a singleton or a prototype? That is, will getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

Specified by:

isSingleton in interface FactoryBean

Returns:

if this bean is a singleton

See Also:

FactoryBean.getObject()

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