com.bea.wli.config.transaction

Class TransactionalReference<T>

java.lang.Object

com.bea.wli.config.transaction.CopyOnWriteTransactionalOwner<com.bea.wli.config.transaction.ObjectWrapper<T>>

com.bea.wli.config.transaction.TransactionalReference<T>

All Implemented Interfaces:

Reference<T>, Transactional

public final class TransactionalReference<T>
extends CopyOnWriteTransactionalOwner<com.bea.wli.config.transaction.ObjectWrapper<T>>
implements Reference<T>

Field Summary

Fields inherited from class com.bea.wli.config.transaction.CopyOnWriteTransactionalOwner

coreState, debugName

Constructor Summary

Constructors

Constructor and Description
TransactionalReference(java.lang.String name, T data)

Method Summary

Modifier and Type	Method and Description
T	get() Get the value of this reference in the current transaction
com.bea.wli.config.transaction.ObjectWrapper<T>	getCopyOf(com.bea.wli.config.transaction.ObjectWrapper<T> objectWrapper) returns a copy of the core state object.
void	prepareForCommit() Called by transaction manager just before committing a transaction.
void	set(T data)

Methods inherited from class com.bea.wli.config.transaction.CopyOnWriteTransactionalOwner

commit, getName, getState, isModified, rollback

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransactionalReference

public TransactionalReference(java.lang.String name,
                              T data)

Method Detail

getCopyOf

public com.bea.wli.config.transaction.ObjectWrapper<T> getCopyOf(com.bea.wli.config.transaction.ObjectWrapper<T> objectWrapper)

Description copied from class: CopyOnWriteTransactionalOwner

returns a copy of the core state object. This is called just before the first write-access to the state. This should not be null;

Specified by:

getCopyOf in class CopyOnWriteTransactionalOwner<com.bea.wli.config.transaction.ObjectWrapper<T>>

set

public void set(T data)

Specified by:

set in interface Reference<T>

get

public T get()

Description copied from interface: Reference

Get the value of this reference in the current transaction

Specified by:

get in interface Reference<T>

Returns:

prepareForCommit

public void prepareForCommit()
                      throws java.lang.Exception

Description copied from interface: Transactional

Called by transaction manager just before committing a transaction. Any exception thrown by the implementations of this method causes the transaction to be rolled back. This can be viewed as the final point when a transactional entity can "veto" the transaction. The fact that this method is called does not guarantee that the transaction will be committed, since other transactional entities may veto the transaction after this call was made.

This method is invoked outside the TransactionManager lock.

Specified by:

prepareForCommit in interface Transactional

Throws:

java.lang.Exception