org.castor.persist

Class LocalTransactionContext

java.lang.Object

org.castor.persist.AbstractTransactionContext

org.castor.persist.LocalTransactionContext

All Implemented Interfaces:

TransactionContext

public final class LocalTransactionContext
extends AbstractTransactionContext

A transaction context is required in order to perform operations against the database. The transaction context is mapped to Transaction for the ODMG API and into XAResource for XA databases. The only way to begin a new transaction is through the creation of a new transaction context. All database access must be performed through a transaction context.

Since:

1.0

Version:

$Revision: 8111 $ $Date: 2006-04-13 10:49:49 -0600 (Thu, 13 Apr 2006) $

Author:

Ralf Joachim

Constructor Summary

Constructors

Constructor and Description
LocalTransactionContext(Database db) Create a new transaction context.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	closeConnections() The derived class must implement this method and close all the connections used in this transaction.
protected void	commitConnections() The derived class must implement this method and commit all the connections used in this transaction.
protected Connection	createConnection(LockEngine engine)
protected void	rollbackConnections() The derived class must implement this method and rollback all the connections used in this transaction.

Methods inherited from class org.castor.persist.AbstractTransactionContext

addTxSynchronizable, clearConnections, close, commit, connectionsIterator, create, delete, expireCache, fetch, getClassLoader, getConnection, getConnectionInfo, getDatabase, getInstanceFactory, getLockTimeout, getNamedNativeQuery, getNamedQuery, getStatus, getTransactionTimeout, getWaitOnLock, isAutoStore, isCached, isCreated, isDeleted, isDeletedByOID, isDepended, isLocked, isOpen, isPersistent, isReadOnly, isRecorded, isUpdateCacheNeeded, isUpdatePersistNeeded, iterateReadWriteObjectsInTransaction, load, load, markCreate, markModified, markUpdate, prepare, query, removeTxSynchronizable, rollback, setAutoStore, setCallback, setInstanceFactory, setLockTimeout, setStatus, setTransactionTimeout, setWaitOnLock, trackObject, untrackObject, update, writeLock

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalTransactionContext

public LocalTransactionContext(Database db)

Create a new transaction context.

Parameters:

db - Database instance

Method Detail

createConnection

protected Connection createConnection(LockEngine engine)
                               throws ConnectionFailedException

Specified by:

createConnection in class AbstractTransactionContext

Throws:

ConnectionFailedException

See Also:

#createConnection(org.exolab.castor.persist.LockEngine)

commitConnections

protected void commitConnections()
                          throws TransactionAbortedException

The derived class must implement this method and commit all the connections used in this transaction. If the transaction could not commit fully or partially, this method will throw an TransactionAbortedException, causing a rollback to occur as the next step.

Specified by:

commitConnections in class AbstractTransactionContext

Throws:

TransactionAbortedException - The transaction could not commit fully or partially and should be rolled back.

See Also:

AbstractTransactionContext.commitConnections()

rollbackConnections

protected void rollbackConnections()

The derived class must implement this method and rollback all the connections used in this transaction. The connections may be closed, as they will not be reused in this transaction. This operation is guaranteed to succeed.

Specified by:

rollbackConnections in class AbstractTransactionContext

See Also:

AbstractTransactionContext.rollbackConnections()

closeConnections

protected void closeConnections()
                         throws TransactionAbortedException

The derived class must implement this method and close all the connections used in this transaction.

Specified by:

closeConnections in class AbstractTransactionContext

Throws:

TransactionAbortedException - The transaction could not close all the connections.

See Also:

AbstractTransactionContext.closeConnections()