oracle.adfinternal.model.adapter.toplink
Class JTATransactionBroker

java.lang.Object
  oracle.adfinternal.model.adapter.toplink.TransactionBroker
      oracle.adfinternal.model.adapter.toplink.JTATransactionBroker

public class JTATransactionBroker
extends TransactionBroker

This class describes a TransactionBroker that uses a JTA-shared transaction model. Instead of acquiring a UnitOfWork from the Sesssion and using isolated transaction space, this TransactionBroker always delagates to the Session to use the JTA transaction. This type of TransactionBroker is employed when the given Session indicates a shared, JTA transaction. Using a shared, JTA transaction is useful when the data control is one of many services used in a shared transaction application.

Field Summary

Fields inherited from class oracle.adfinternal.model.adapter.toplink.TransactionBroker

CLIENT_SESSION_BROKER_TYPE, CLIENT_SESSION_TYPE, ISOLATED_DATABASE_SESSION_TYPE, SHARED_DATABASE_SESSION_TYPE, SHARED_SESSION_BROKER_TYPE, shouldPerformDeletesFirst

Constructor Summary

JTATransactionBroker(oracle.toplink.sessions.Session session, int brokerType, boolean shouldPerformDeletesFirst, boolean shouldSequenceOnCreate)
Creates a new TransactionBroker instance.

Method Summary

oracle.toplink.sessions.UnitOfWork	getUnitOfWork() Returns the JTA UnitOfWork from the Session.
protected void	releaseUnitOfWork() Releases the shared UnitOfWork indicated by the Session.
protected void	resetUnitOfWork() Only releases the shared UnitOfWork.

Methods inherited from class oracle.adfinternal.model.adapter.toplink.TransactionBroker

commitTransaction, createEntity, createEntity, deleteEntity, executeQuery, executeQuery, getSession, initialize, isQuery, isTransactionDirty, registerEntity, registerNewEntity, registerNewEntity, release, releaseSession, resetState, resetTransaction, rollbackTransaction

Methods inherited from class java.lang.Object

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

Constructor Detail

JTATransactionBroker

public JTATransactionBroker(oracle.toplink.sessions.Session session,
                            int brokerType,
                            boolean shouldPerformDeletesFirst,
                            boolean shouldSequenceOnCreate)

Creates a new TransactionBroker instance.

Parameters:

applicationBindingContext - - BindingContext unique to this application instance.

session - - TopLink Session for this application instance.

brokerType - - describes the mode of operation with regards to the underlying TL Session.

shouldPerformDeletesFirst - - determines whether the UnitOfWork in this TransactionBroker should perform deletes first pn commit.

Method Detail

getUnitOfWork

public oracle.toplink.sessions.UnitOfWork getUnitOfWork()

Returns the JTA UnitOfWork from the Session.

Specified by:

getUnitOfWork in class TransactionBroker

resetUnitOfWork

protected void resetUnitOfWork()

Only releases the shared UnitOfWork.

Specified by:

resetUnitOfWork in class TransactionBroker

releaseUnitOfWork

protected void releaseUnitOfWork()

Releases the shared UnitOfWork indicated by the Session.

Specified by:

releaseUnitOfWork in class TransactionBroker