com.sun.jini.mahalo
Class CommitJob
java.lang.Object
com.sun.jini.mahalo.Job
com.sun.jini.mahalo.CommitJob
- All Implemented Interfaces:
- TransactionConstants
public class CommitJob
- extends Job
- implements TransactionConstants
An implementation of a Job
which interacts with
a set of TransactionParticipant
s to inform them
to roll forward changes associated with a given Transaction
.
- Author:
- Sun Microsystems, Inc.
- See Also:
Job
,
ParticipantTask
,
Transaction
,
TransactionParticipant
Method Summary |
(package private) Object |
computeResult()
Gathers partial results submitted by tasks and produces
a single outcome. |
(package private) TaskManager.Task[] |
createTasks()
Creates the TaskManager.Task s necessary to
inform participants to roll-back. |
(package private) Object |
doWork(TaskManager.Task who,
Object param)
The work to be performed by each TaskManager.Task
is provided by the Job that creates it. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
tr
ServerTransaction tr
log
ClientLog log
handles
ParticipantHandle[] handles
maxtries
int maxtries
logger
static final Logger logger
CommitJob
public CommitJob(Transaction tr,
TaskManager pool,
WakeupManager wm,
ClientLog log,
ParticipantHandle[] handles)
- Constructs an
CommitJob
- Parameters:
tr
- The Transaction
whose participants
will be instructed to roll-forward.pool
- The TaskManager
which provides the
threads used for interacting with participants.log
- The ClientLog
used for recording
recovery data.handles
- The array of participants which will be contacted
and informed to roll-forward.- See Also:
TaskManager
,
ClientLog
,
TransactionParticipant
doWork
Object doWork(TaskManager.Task who,
Object param)
- The work to be performed by each
TaskManager.Task
is provided by the Job
that creates it.
The work performed by a task belonging to the CommitJob
contacts a participant, instructs it to roll-forward and
log appropriately.
- Specified by:
doWork
in class Job
- Parameters:
who
- The task performing the workparam
- A parameter, of the task's choosing, useful
in performing work.- See Also:
Job
,
TaskManager.Task
createTasks
TaskManager.Task[] createTasks()
- Creates the
TaskManager.Task
s necessary to
inform participants to roll-back.
- Specified by:
createTasks
in class Job
computeResult
Object computeResult()
throws JobException
- Gathers partial results submitted by tasks and produces
a single outcome.
- Specified by:
computeResult
in class Job
- Throws:
JobException
- See Also:
Job
Copyright 2007-2010, multiple authors.
Licensed under the Apache License, Version 2.0, see the NOTICE file for attributions.