org.springframework.transaction.jta
Class WebLogicServerTransactionManagerFactoryBean

java.lang.Object
  extended by org.springframework.transaction.jta.WebLogicServerTransactionManagerFactoryBean
All Implemented Interfaces:
FactoryBean

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Note that as of Spring 1.2, this class is effectively superseded by WebLogicJtaTransactionManager's autodetection of WebLogic 7.0 or 8.1+.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

Field Summary
protected  org.apache.commons.logging.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 org.apache.commons.logging.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

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)

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()


Copyright (c) 2002-2006 The Spring Framework Project.