org.hibernate.engine.jdbc.spi

Interface JdbcCoordinator

All Superinterfaces:

JdbcResourceTransactionAccess, Serializable, TransactionCoordinatorOwner

All Known Implementing Classes:

JdbcCoordinatorImpl

public interface JdbcCoordinator
extends Serializable, TransactionCoordinatorOwner, JdbcResourceTransactionAccess

Coordinates JDBC-related activities.

Author:

Steve Ebersole, Brett Meyer

Method Summary

Modifier and Type	Method and Description
void	abortBatch() Abort the currently managed batch (if any)
void	afterStatementExecution() Used to signify that a statement has completed execution which may indicate that this logical connection need to perform an aggressive release of its physical connection.
void	afterTransaction() Signals the end of transaction.
void	cancelLastQuery() Attempt to cancel the last query sent to the JDBC driver.
Connection	close() Close this coordinator and release and resources.
<T> T	coordinateWork(WorkExecutorVisitable<T> work) Perform the requested work handling exceptions, coordinating and handling return processing.
int	determineRemainingTransactionTimeOutPeriod() Calculate the amount of time, in seconds, still remaining before transaction timeout occurs.
void	disableReleases() Disable connection releases
void	enableReleases() Enable connection releases
void	executeBatch() Execute the currently managed batch (if any)
void	flushBeginning() Callback to let us know that a flush is beginning.
void	flushEnding() Callback to let us know that a flush is ending.
Batch	getBatch(BatchKey key) Get a batch instance.
ConnectionReleaseMode	getConnectionReleaseMode() The release mode under which this logical connection is operating.
LogicalConnectionImplementor	getLogicalConnection() Retrieves the logical connection associated with this JDBC coordinator.
ResourceRegistry	getResourceRegistry()
ResultSetReturn	getResultSetReturn() Obtain the resultset extractor associated with this JDBC coordinator.
StatementPreparer	getStatementPreparer() Obtain the statement preparer associated with this JDBC coordinator.
boolean	isReadyForSerialization() Can this coordinator be serialized?
void	registerLastQuery(Statement statement) Register a query statement as being able to be cancelled.

Methods inherited from interface org.hibernate.resource.transaction.spi.TransactionCoordinatorOwner

afterTransactionBegin, afterTransactionCompletion, beforeTransactionCompletion, flushBeforeTransactionCompletion, getJdbcSessionOwner, isActive, setTransactionTimeOut

Methods inherited from interface org.hibernate.resource.transaction.backend.jdbc.spi.JdbcResourceTransactionAccess

getResourceLocalTransaction

Method Detail

getLogicalConnection

LogicalConnectionImplementor getLogicalConnection()

Retrieves the logical connection associated with this JDBC coordinator.

Returns:

The logical connection

getBatch

Batch getBatch(BatchKey key)

Get a batch instance.

Parameters:

key - The unique batch key.

Returns:

The batch

executeBatch

void executeBatch()

Execute the currently managed batch (if any)

abortBatch

void abortBatch()

Abort the currently managed batch (if any)

getStatementPreparer

StatementPreparer getStatementPreparer()

Obtain the statement preparer associated with this JDBC coordinator.

Returns:

This coordinator's statement preparer

getResultSetReturn

ResultSetReturn getResultSetReturn()

Obtain the resultset extractor associated with this JDBC coordinator.

Returns:

This coordinator's resultset extractor

flushBeginning

void flushBeginning()

Callback to let us know that a flush is beginning. We use this fact to temporarily circumvent aggressive connection releasing until after the flush cycle is complete flushEnding()

flushEnding

void flushEnding()

Callback to let us know that a flush is ending. We use this fact to stop circumventing aggressive releasing connections.

close

Connection close()

Close this coordinator and release and resources.

Returns:

The Connection associated with the managed logical connection

See Also:

LogicalConnection.close()

afterTransaction

void afterTransaction()

Signals the end of transaction.

Intended for use from the transaction coordinator, after local transaction completion. Used to conditionally release the JDBC connection aggressively if the configured release mode indicates.

afterStatementExecution

void afterStatementExecution()

Used to signify that a statement has completed execution which may indicate that this logical connection need to perform an aggressive release of its physical connection.

coordinateWork

<T> T coordinateWork(WorkExecutorVisitable<T> work)

Perform the requested work handling exceptions, coordinating and handling return processing.

Type Parameters:

T - The result type.

Parameters:

work - The work to be performed.

Returns:

The work result.

cancelLastQuery

void cancelLastQuery()

Attempt to cancel the last query sent to the JDBC driver.

determineRemainingTransactionTimeOutPeriod

int determineRemainingTransactionTimeOutPeriod()

Calculate the amount of time, in seconds, still remaining before transaction timeout occurs.

Returns:

The number of seconds remaining until until a transaction timeout occurs. A negative value indicates no timeout was requested.

Throws:

TransactionException - Indicates the time out period has already been exceeded.

enableReleases

void enableReleases()

Enable connection releases

disableReleases

void disableReleases()

Disable connection releases

registerLastQuery

void registerLastQuery(Statement statement)

Register a query statement as being able to be cancelled.

Parameters:

statement - The cancel-able query statement.

isReadyForSerialization

boolean isReadyForSerialization()

Can this coordinator be serialized?

Returns:

true indicates the coordinator can be serialized.

getConnectionReleaseMode

ConnectionReleaseMode getConnectionReleaseMode()

The release mode under which this logical connection is operating.

Returns:

the release mode.

getResourceRegistry

ResourceRegistry getResourceRegistry()