|
The Spring Framework | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.springframework.transaction.jta.WebLogicServerTransactionManagerFactoryBean
public class WebLogicServerTransactionManagerFactoryBean
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. This class is not relevant on WebLogic 8.1+!
Uses WebLogic TxHelper
's static access methods to obtain the
server's internal JTA TransactionManager. This 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Note that as of Spring 1.2, this class is effectively superseded by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
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.
WebLogicJtaTransactionManager
,
JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager)
,
weblogic.transaction.TxHelper#getTransactionManager
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 object managed by this factory a singleton? |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected final Log logger
Constructor Detail |
---|
public WebLogicServerTransactionManagerFactoryBean() throws TransactionSystemException
TransactionSystemException
Method Detail |
---|
public Object getObject()
FactoryBean
As with a BeanFactory
, this allows support for both the
Singleton and Prototype design pattern.
If this FactoryBean is not fully initialized yet at the time of
the call (for example because it is involved in a circular reference),
throw a corresponding FactoryBeanNotInitializedException
.
As of Spring 2.0, FactoryBeans are allowed to return null
objects. The factory will consider this as normal value to be used; it
will not throw a FactoryBeanNotInitializedException in this case anymore.
FactoryBean implementations are encouraged to throw
FactoryBeanNotInitializedException themselves now, as appropriate.
getObject
in interface FactoryBean
null
)FactoryBeanNotInitializedException
public Class getObjectType()
FactoryBean
null
if not known in advance.
This allows one to check for specific types of beans without instantiating objects, for example on autowiring.
In the case of implementations that are creating a singleton object, this method 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.
getObjectType
in interface FactoryBean
null
if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class)
public boolean isSingleton()
FactoryBean
FactoryBean.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.
NOTE: This method returning false
does not
necessarily indicate that returned objects are independent instances.
An implementation of the extended SmartFactoryBean
interface
may explicitly indicate independent instances through its
SmartFactoryBean.isPrototype()
method. Plain FactoryBean
implementations which do not implement this extended interface are
simply assumed to always return independent instances if the
isSingleton()
implementation returns false
.
isSingleton
in interface FactoryBean
FactoryBean.getObject()
,
SmartFactoryBean.isPrototype()
|
The Spring Framework | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |