org.jboss.ejb.client

Class EJBClientTransactionContext

java.lang.Object

org.jboss.ejb.client.Attachable

org.jboss.ejb.client.EJBClientTransactionContext

Direct Known Subclasses:

EJBClientManagedTransactionContext, EJBClientUserTransactionContext

public abstract class EJBClientTransactionContext
extends Attachable

The transaction context for an EJB client.

Author:

David M. Lloyd

Constructor Summary

Constructors

Constructor and Description
EJBClientTransactionContext()

Method Summary

Modifier and Type	Method and Description
static EJBClientTransactionContext	create(TransactionManager transactionManager, TransactionSynchronizationRegistry synchronizationRegistry) Create a transaction context which is controlled by an actual transaction manager.
static EJBClientTransactionContext	createLocal() Create a local client transaction context which is controlled directly via UserTransaction methods.
protected abstract TransactionID	getAssociatedTransactionID(EJBClientInvocationContext invocationContext) Get the transaction ID to associate with the invocation.
static EJBClientTransactionContext	getCurrent() Get the current client transaction context.
protected abstract String	getTransactionNode() Get the node to which this transaction is pinned, if any.
protected UserTransaction	getUserTransaction(String nodeName) Get a UserTransaction instance affiliated with a specific remote node to control the transaction state.
static EJBClientTransactionContext	requireCurrent() Get the current client transaction context, throwing an exception if one is not available.
static void	setGlobalContext(EJBClientTransactionContext context) Set the singleton, global transaction context.
static void	setSelector(ContextSelector<EJBClientTransactionContext> selector) Set the client transaction context selector.

Methods inherited from class org.jboss.ejb.client.Attachable

getAttachment, getAttachments, putAttachment, putAttachmentIfAbsent, removeAttachment, removeAttachment, replaceAttachment, replaceAttachment

Methods inherited from class java.lang.Object

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

Constructor Detail

EJBClientTransactionContext

public EJBClientTransactionContext()

Method Detail

getAssociatedTransactionID

protected abstract TransactionID getAssociatedTransactionID(EJBClientInvocationContext invocationContext)
                                                     throws Exception

Get the transaction ID to associate with the invocation. The transaction ID typically comes from the current thread's transaction context.

Parameters:

invocationContext - the invocation context

Returns:

the transaction ID to associate, or null for none

Throws:

Exception - if an exception occurs

getTransactionNode

protected abstract String getTransactionNode()

Get the node to which this transaction is pinned, if any.

Returns:

the node name or null if the transaction is not pinned

setSelector

public static void setSelector(ContextSelector<EJBClientTransactionContext> selector)
                        throws SecurityException

Set the client transaction context selector.

Parameters:

selector - the selector to set

Throws:

SecurityException - if a security manager is installed and you do not have the setClientTransactionContextSelector RuntimePermission

setGlobalContext

public static void setGlobalContext(EJBClientTransactionContext context)
                             throws SecurityException

Set the singleton, global transaction context. Replaces any selector which was set via setSelector(ContextSelector).

Parameters:

context - the context to set

Throws:

SecurityException - if a security manager is installed and you do not have the setClientTransactionContextSelector RuntimePermission

requireCurrent

public static EJBClientTransactionContext requireCurrent()
                                                  throws IllegalStateException

Get the current client transaction context, throwing an exception if one is not available.

Returns:

the transaction context

Throws:

IllegalStateException - if no context is available

getCurrent

public static EJBClientTransactionContext getCurrent()

Get the current client transaction context.

Returns:

the current client transaction context

createLocal

public static EJBClientTransactionContext createLocal()

Create a local client transaction context which is controlled directly via UserTransaction methods.

Returns:

the local transaction context

create

public static EJBClientTransactionContext create(TransactionManager transactionManager,
                                                 TransactionSynchronizationRegistry synchronizationRegistry)

Create a transaction context which is controlled by an actual transaction manager.

Parameters:

transactionManager - the transaction manager

synchronizationRegistry - the transaction synchronization registry

Returns:

the transaction context

getUserTransaction

protected UserTransaction getUserTransaction(String nodeName)

Get a UserTransaction instance affiliated with a specific remote node to control the transaction state. The instance is only usable while there is an active connection with the given peer.

Parameters:

nodeName - the remote node name

Returns:

the user transaction instance