org.springframework.jdbc.datasource

Class DataSourceUtils.ConnectionSynchronization

java.lang.Object

org.springframework.transaction.support.TransactionSynchronizationAdapter

org.springframework.jdbc.datasource.DataSourceUtils.ConnectionSynchronization

All Implemented Interfaces:

Ordered, TransactionSynchronization

Enclosing class:

DataSourceUtils

private static class DataSourceUtils.ConnectionSynchronization
extends TransactionSynchronizationAdapter

Callback for resource cleanup at the end of a non-native JDBC transaction (e.g. when participating in a JtaTransactionManager transaction).

See Also:

JtaTransactionManager

Field Summary

Fields

Modifier and Type	Field and Description
private ConnectionHolder	connectionHolder
private javax.sql.DataSource	dataSource
private boolean	holderActive
private int	order

Fields inherited from interface org.springframework.transaction.support.TransactionSynchronization

STATUS_COMMITTED, STATUS_ROLLED_BACK, STATUS_UNKNOWN

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
DataSourceUtils.ConnectionSynchronization(ConnectionHolder connectionHolder, javax.sql.DataSource dataSource)

Method Summary

Methods

Modifier and Type	Method and Description
void	afterCompletion(int status) Invoked after transaction commit/rollback.
void	beforeCompletion() Invoked before transaction commit/rollback.
int	getOrder() Return the order value of this object, with a higher value meaning greater in terms of sorting.
void	resume() Resume this synchronization.
void	suspend() Suspend this synchronization.

Methods inherited from class org.springframework.transaction.support.TransactionSynchronizationAdapter

afterCommit, beforeCommit, flush

Methods inherited from class java.lang.Object

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

Field Detail

connectionHolder

private final ConnectionHolder connectionHolder

dataSource

private final javax.sql.DataSource dataSource

order

private int order

holderActive

private boolean holderActive

Constructor Detail

DataSourceUtils.ConnectionSynchronization

public DataSourceUtils.ConnectionSynchronization(ConnectionHolder connectionHolder,
                                         javax.sql.DataSource dataSource)

Method Detail

getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, with a higher value meaning greater in terms of sorting.

Normally starting with 0, with Integer.MAX_VALUE indicating the greatest value. Same order values will result in arbitrary positions for the affected objects.

Higher values can be interpreted as lower priority. As a consequence, the object with the lowest value has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Specified by:

getOrder in interface Ordered

Overrides:

getOrder in class TransactionSynchronizationAdapter

Returns:

the order value

suspend

public void suspend()

Description copied from interface: TransactionSynchronization

Suspend this synchronization. Supposed to unbind resources from TransactionSynchronizationManager if managing any.

Specified by:

suspend in interface TransactionSynchronization

Overrides:

suspend in class TransactionSynchronizationAdapter

See Also:

TransactionSynchronizationManager.unbindResource(java.lang.Object)

resume

public void resume()

Description copied from interface: TransactionSynchronization

Resume this synchronization. Supposed to rebind resources to TransactionSynchronizationManager if managing any.

Specified by:

resume in interface TransactionSynchronization

Overrides:

resume in class TransactionSynchronizationAdapter

See Also:

TransactionSynchronizationManager.bindResource(java.lang.Object, java.lang.Object)

beforeCompletion

public void beforeCompletion()

Description copied from interface: TransactionSynchronization

Invoked before transaction commit/rollback. Can perform resource cleanup before transaction completion.

This method will be invoked after beforeCommit, even when beforeCommit threw an exception. This callback allows for closing resources before transaction completion, for any outcome.

Specified by:

beforeCompletion in interface TransactionSynchronization

Overrides:

beforeCompletion in class TransactionSynchronizationAdapter

See Also:

TransactionSynchronization.beforeCommit(boolean), TransactionSynchronization.afterCompletion(int)

afterCompletion

public void afterCompletion(int status)

Description copied from interface: TransactionSynchronization

Invoked after transaction commit/rollback. Can perform resource cleanup after transaction completion.

NOTE: The transaction will have been committed or rolled back already, but the transactional resources might still be active and accessible. As a consequence, any data access code triggered at this point will still "participate" in the original transaction, allowing to perform some cleanup (with no commit following anymore!), unless it explicitly declares that it needs to run in a separate transaction. Hence: Use PROPAGATION_REQUIRES_NEW for any transactional operation that is called from here.

Specified by:

afterCompletion in interface TransactionSynchronization

Overrides:

afterCompletion in class TransactionSynchronizationAdapter

Parameters:

status - completion status according to the STATUS_* constants

See Also:

TransactionSynchronization.STATUS_COMMITTED, TransactionSynchronization.STATUS_ROLLED_BACK, TransactionSynchronization.STATUS_UNKNOWN, TransactionSynchronization.beforeCompletion()