public interface ManagedTask
ManagedScheduledExecutorService can optionally implement this
interface to provide identifying information about the task, to provide
ManagedTaskListener to get notification of lifecycle events of
the task, or to provide additional execution properties.
|Modifier and Type
|Field and Description
Constant for the "SUSPEND" value of the TRANSACTION execution property.
Constant for the "USE_TRANSACTION_OF_EXECUTION_THREAD" value of the TRANSACTION execution property.
static final String LONGRUNNING_HINT
to provide hint about whether the task could take a long time to complete.
Jakarta™ EE Product Providers may make use of this hint value to
decide how to allocate thread resource for running this task.
Valid values are "true" or "false".
static final String TRANSACTION
to inform the Jakarta EE Product Provider under which transaction
should the task or proxy method of contextual proxy object be executed
Valid values are:
"SUSPEND" (the default if unspecified) - Any transaction that is currently
active on the thread will be suspended and a
UserTransaction (accessible in the local
JNDI namespace as "java:comp/UserTransaction") will be available. The
original transaction, if any was active on the thread, will be resumed
when the task or contextual proxy object method returns.
"USE_TRANSACTION_OF_EXECUTION_THREAD" - The contextual proxy object method
will run within the transaction (if any) of the execution thread. A
UserTransaction will only be available if it is
also available in the execution thread (for example, when the proxy method
is invoked from a Servlet or Bean Managed Transaction). When there is
no existing transaction on the execution thread, such as when running tasks
that are submitted to a
ManagedExecutorService or a
UserTransaction will be available.
static final String SUSPEND
static final String USE_TRANSACTION_OF_EXECUTION_THREAD
static final String IDENTITY_NAME
to provide a String that identifies the task. It may be the name or ID that
allow management facilities to inspect the task to determine the intent
of the task and its state. Implementations should not depend upon
any thread execution context and should typically return only
readily-available instance data to identify the task.
ManagedTaskListener to receive notification of lifecycle
events of this task.
ManagedTaskListener to receive notification of
lifecycle events of this task, or null if it is not necessary to get
notified of such events.
ManagedScheduledExecutorService when executing this task.
Some standard property keys are defined in this class. Custom property keys may be defined but must not begin with "javax.enterprise.concurrent.".
Copyright © 2019 Eclipse Foundation.
Use is subject to license terms.