weka.experiment

Class RemoteEngine

java.lang.Object

java.rmi.server.RemoteObject

java.rmi.server.RemoteServer

java.rmi.server.UnicastRemoteObject

weka.experiment.RemoteEngine

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote, RevisionHandler, Compute

public class RemoteEngine
extends java.rmi.server.UnicastRemoteObject
implements Compute, RevisionHandler

A general purpose server for executing Task objects sent via RMI.

Version:

$Revision: 11247 $

Author:

Mark Hall (mhall@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RemoteEngine(java.lang.String hostName) Constructor

Method Summary

Modifier and Type	Method and Description
java.lang.Object	checkStatus(java.lang.Object taskId) Returns status information on a particular task
java.lang.Object	executeTask(Task t) Takes a task object and queues it for execution
java.lang.String	getRevision() Returns the revision string.
static void	main(java.lang.String[] args) Main method.

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RemoteEngine

public RemoteEngine(java.lang.String hostName)
             throws java.rmi.RemoteException

Constructor

Parameters:

hostName - name of the host

Throws:

java.rmi.RemoteException - if something goes wrong

Method Detail

executeTask

public java.lang.Object executeTask(Task t)
                             throws java.rmi.RemoteException

Takes a task object and queues it for execution

Specified by:

executeTask in interface Compute

Parameters:

t - the Task object to execute

Returns:

an identifier for the Task that can be used when querying Task status

Throws:

java.rmi.RemoteException - if something goes wrong.

checkStatus

public java.lang.Object checkStatus(java.lang.Object taskId)
                             throws java.lang.Exception

Returns status information on a particular task

Specified by:

checkStatus in interface Compute

Parameters:

taskId - the ID of the task to check

Returns:

a TaskStatusInfo encapsulating task status info

Throws:

java.lang.Exception - if an error occurs

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

public static void main(java.lang.String[] args)

Main method. Gets address of the local host, creates a remote engine object and binds it in the RMI registry. If there is no RMI registry, then it tries to create one with default port 1099.

Parameters:

args -