org.hibernate.context.internal

Class JTASessionContext

java.lang.Object

org.hibernate.context.spi.AbstractCurrentSessionContext

org.hibernate.context.internal.JTASessionContext

All Implemented Interfaces:

Serializable, CurrentSessionContext

public class JTASessionContext
extends AbstractCurrentSessionContext

An implementation of CurrentSessionContext which scopes the notion of a current session to a JTA transaction. Because JTA gives us a nice tie-in to clean up after ourselves, this implementation will generate Sessions as needed provided a JTA transaction is in effect. If a session is not already associated with the current JTA transaction at the time currentSession() is called, a new session will be opened and it will be associated with that JTA transaction. Note that the sessions returned from this method are automatically configured with both the auto-flush and auto-close attributes set to true, meaning that the Session will be automatically flushed and closed as part of the lifecycle for the JTA transaction to which it is associated. Additionally, it will also be configured to aggressively release JDBC connections after each statement is executed. These settings are governed by the isAutoFlushEnabled(), isAutoCloseEnabled(), and getConnectionReleaseMode() methods; these are provided (along with the buildOrObtainSession() method) for easier subclassing for custom JTA-based session tracking logic (like maybe long-session semantics).

Author:

Steve Ebersole

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	JTASessionContext.CleanupSync JTA transaction sync used for cleanup of the internal session map.

Constructor Summary

Constructors

Constructor and Description
JTASessionContext(SessionFactoryImplementor factory) Constructs a JTASessionContext

Method Summary

Modifier and Type	Method and Description
protected Session	buildOrObtainSession() Strictly provided for subclassing purposes; specifically to allow long-session support.
Session	currentSession() Retrieve the current session according to the scoping defined by this implementation.
protected ConnectionReleaseMode	getConnectionReleaseMode() Mainly for subclass usage.
protected boolean	isAutoCloseEnabled() Mainly for subclass usage.
protected boolean	isAutoFlushEnabled() Mainly for subclass usage.

Methods inherited from class org.hibernate.context.spi.AbstractCurrentSessionContext

baseSessionBuilder, factory, validateExistingSession

Methods inherited from class java.lang.Object

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

Constructor Detail

JTASessionContext

public JTASessionContext(SessionFactoryImplementor factory)

Constructs a JTASessionContext

Parameters:

factory - The factory this context will service

Method Detail

currentSession

public Session currentSession()
                       throws HibernateException

Description copied from interface: CurrentSessionContext

Retrieve the current session according to the scoping defined by this implementation.

Returns:

The current session.

Throws:

HibernateException - Typically indicates an issue locating or creating the current session.

buildOrObtainSession

protected Session buildOrObtainSession()

Strictly provided for subclassing purposes; specifically to allow long-session support. This implementation always just opens a new session.

Returns:

the built or (re)obtained session.

isAutoCloseEnabled

protected boolean isAutoCloseEnabled()

Mainly for subclass usage. This impl always returns true.

Returns:

Whether or not the the session should be closed by transaction completion.

isAutoFlushEnabled

protected boolean isAutoFlushEnabled()

Mainly for subclass usage. This impl always returns true.

Returns:

Whether or not the the session should be flushed prior transaction completion.

getConnectionReleaseMode

protected ConnectionReleaseMode getConnectionReleaseMode()

Mainly for subclass usage. This impl always returns after_statement.

Returns:

The connection release mode for any built sessions.