Class JTAJCATransactionImpl

java.lang.Object

org.datanucleus.transaction.TransactionImpl

org.datanucleus.transaction.jta.JTAJCATransactionImpl

All Implemented Interfaces:

Synchronization, Transaction

public class JTAJCATransactionImpl
extends TransactionImpl
implements Synchronization

A transaction that is synchronised with a Java Transaction Service (JTA) transaction with JCA. It is only used when using the JDO API within a JavaEE environment using the JCA adapter (i.e not for JPA).

Field Summary

Fields

Modifier and Type	Field	Description
private TransactionManager	jtaTM	JTA TransactionManager.
private Transaction	jtaTx	JTA transaction we currently are synchronized with.
private boolean	markedForRollback

Fields inherited from class TransactionImpl

active, closed, committing, ec, rollbackOnly, serializeRead, txnMgr

Fields inherited from interface Transaction

TRANSACTION_ISOLATION_OPTION

Constructor Summary

Constructors

Constructor	Description
JTAJCATransactionImpl(ExecutionContext ec, PropertyStore properties)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	afterCompletion(int status)	Called by the transaction manager after the transaction is committed or rolled back.
void	beforeCompletion()	Called by the transaction manager prior to the start of the two-phase transaction commit process.
boolean	getIsActive()	Similar to "isActive" except that it just returns the "active" flag whereas the isActive() method can also embody rejoining to underlying transactions.
boolean	isActive()	Accessor for whether the transaction is active.
private void	joinTransaction()	Synchronise our active state with that of the JTA transaction, if it exists.

Methods inherited from class TransactionImpl

addTransactionEventListener, begin, bindTransactionEventListener, close, commit, end, flush, getBeginTime, getNontransactionalRead, getNontransactionalWrite, getNontransactionalWriteAutoCommit, getOptimistic, getOptions, getRestoreValues, getRetainValues, getRollbackOnly, getSerializeRead, getSynchronization, internalBegin, internalCommit, internalPostCommit, internalPreCommit, internalPreRollback, internalRollback, isCommitting, preFlush, releaseSavepoint, removeTransactionEventListener, rollback, rollbackToSavepoint, setNontransactionalRead, setNontransactionalWrite, setNontransactionalWriteAutoCommit, setOptimistic, setOption, setOption, setOption, setOption, setProperties, setRestoreValues, setRetainValues, setRollbackOnly, setSavepoint, setSerializeRead, setSynchronization

Methods inherited from class Object

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

Field Details

jtaTM

private TransactionManager jtaTM

JTA TransactionManager.

jtaTx

private Transaction jtaTx

JTA transaction we currently are synchronized with. Null when there is no JTA transaction active or not yet detected.

markedForRollback

private boolean markedForRollback

Constructor Details

JTAJCATransactionImpl

public JTAJCATransactionImpl(ExecutionContext ec,
 PropertyStore properties)

Constructor.

Parameters:

ec - ExecutionContext

properties - Properties to use with the transaction

Method Details

getIsActive

public boolean getIsActive()

Description copied from class: TransactionImpl

Similar to "isActive" except that it just returns the "active" flag whereas the isActive() method can also embody rejoining to underlying transactions.

Specified by:

getIsActive in interface Transaction

Overrides:

getIsActive in class TransactionImpl

Returns:

The "active" flag

isActive

public boolean isActive()

Accessor for whether the transaction is active.

Specified by:

isActive in interface Transaction

Overrides:

isActive in class TransactionImpl

Returns:

Whether the transaction is active.

joinTransaction

private void joinTransaction()

Synchronise our active state with that of the JTA transaction, if it exists. Look for an active JTA transaction. If there is one, begin() ourselves and register synchronisation. We must poll because there is no way of getting notified of a newly begun transaction.

beforeCompletion

public void beforeCompletion()

Called by the transaction manager prior to the start of the two-phase transaction commit process.

Specified by:

beforeCompletion in interface Synchronization

afterCompletion

public void afterCompletion(int status)

Called by the transaction manager after the transaction is committed or rolled back. Must be synchronised because some callers expect to be owner of this object's monitor (internalPostCommit() calls closeSQLConnection() which calls notifyAll()).

Specified by:

afterCompletion in interface Synchronization

Parameters:

status - The status