server
Class GLTMonitor

java.lang.Object
  java.util.Observable
      server.GLTMonitor

public class GLTMonitor

extends java.util.Observable

The driver class for GLTMon server application. This class contains the main program that controls all the DeviceThreads, which perform the actual attribute polling.

This class contains a number of methods that work with each DeviceThread to start it and notify it that changes have occurred.

Version:

0.1

Author:

gswalters

See Also:

DeviceThread

Constructor Summary

GLTMonitor(Conf config)
Construct a GLTMonitor object that establishes a database connection.

Method Summary

static void	main(java.lang.String[] args) Main
void	monitorChanges() Monitor changes occuring in the database, and notify the appropriate DeviceThread.
void	shutdown() Invoke a clean shutdown of each DeviceThread
void	startDeviceThreads() Fire up the threads to control the polling of each monitored Device.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

GLTMonitor

public GLTMonitor(Conf config)
           throws server.GLTMonitor.GLTMonitorCreateException

Construct a GLTMonitor object that establishes a database connection.

Method Detail

monitorChanges

public void monitorChanges()
                    throws server.GLTMonitor.GLTMonitorDatabaseException

Monitor changes occuring in the database, and notify the appropriate DeviceThread. Periodically check the Changes table for new records.Each record indicates an action to take and the Device, DeviceInterface, or Attribute on which the change takes place.

Throws:

server.GLTMonitor.GLTMonitorDatabaseException

startDeviceThreads

public void startDeviceThreads()
                        throws server.GLTMonitor.GLTMonitorDatabaseException

Fire up the threads to control the polling of each monitored Device. Retrieves the monitored Device array, creates the array of DeviceThreads, and starts each thread.

Throws:

server.GLTMonitor.GLTMonitorDatabaseException

shutdown

public void shutdown()

Invoke a clean shutdown of each DeviceThread

main

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

Main