gr.demokritos.iit.jinsect.distributed
Class MobileAgent

java.lang.Object
  jade.core.Agent
      gr.demokritos.iit.jinsect.distributed.MobileAgent

All Implemented Interfaces:

jade.core.TimerListener, java.io.Serializable, java.lang.Runnable

Direct Known Subclasses:

NGramDocumentComparatorAgent

public class MobileAgent
extends jade.core.Agent

This is an example of mobile agent. This class contains the resources used by the agent behaviours: the counter, the flag cntEnabled, and the list of visited locations. At the setup it creates a gui and adds behaviours to: get the list of available locations from AMS, serve the incoming messages, and to increment the counter. In particular, notice the usage of the two methods beforeMove() and afterMove() to execute some application-specific tasks just before and just after the agent migration takes effect. Because this agent has a GUI, it extends the class GuiAgent that, in turn, extends the class Agent. Being the GUI a different thread, the communication between the agent and its GUI is based on event passing.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class jade.core.Agent

jade.core.Agent.Interrupted

Field Summary

static int	CLONE_EVENT
static int	CONTINUE_EVENT
static int	EXIT
protected java.util.ArrayList	Locations
static int	MOVE_EVENT
static int	REFRESH_EVENT
static int	STOP_EVENT

Fields inherited from class jade.core.Agent

AP_ACTIVE, AP_DELETED, AP_IDLE, AP_INITIATED, AP_MAX, AP_MIN, AP_SUSPENDED, AP_WAITING, D_ACTIVE, D_MAX, D_MIN, D_RETIRED, D_SUSPENDED, D_UNKNOWN

Constructor Summary

MobileAgent()

Method Summary

void	afterLoad()
protected void	afterMove() This method is executed as soon as the agent arrives to the new destination.
void	afterReload()
void	afterThaw()
void	beforeFreeze()
protected void	beforeMove() This method is executed just before moving the agent to another location.
void	beforeReload()
void	setup()
void	updateLocations(java.util.Iterator iLocationIterator)

Methods inherited from class jade.core.Agent

addBehaviour, afterClone, beforeClone, blockingReceive, blockingReceive, blockingReceive, blockingReceive, changeStateTo, clean, doActivate, doClone, doDelete, doMove, doSuspend, doTimeOut, doWait, doWait, doWake, getAgentState, getAID, getAMS, getArguments, getContainerController, getContentManager, getCurQueueSize, getDefaultDF, getHap, getHelper, getLocalName, getName, getO2AObject, getProperty, getQueueSize, getState, here, join, notifyChangeBehaviourState, notifyRestarted, postMessage, putBack, putO2AObject, receive, receive, removeBehaviour, restartLater, restore, restoreBufferedState, run, send, setArguments, setEnabledO2ACommunication, setGenerateBehaviourEvents, setQueueSize, takeDown, waitUntilStarted, write

Methods inherited from class java.lang.Object

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

Field Detail

Locations

protected transient java.util.ArrayList Locations

EXIT

public static final int EXIT

See Also:

Constant Field Values

MOVE_EVENT

public static final int MOVE_EVENT

See Also:

Constant Field Values

STOP_EVENT

public static final int STOP_EVENT

See Also:

Constant Field Values

CONTINUE_EVENT

public static final int CONTINUE_EVENT

See Also:

Constant Field Values

REFRESH_EVENT

public static final int REFRESH_EVENT

See Also:

Constant Field Values

CLONE_EVENT

public static final int CLONE_EVENT

See Also:

Constant Field Values

Constructor Detail

MobileAgent

public MobileAgent()

Method Detail

setup

public void setup()

Overrides:

setup in class jade.core.Agent

beforeMove

protected void beforeMove()

This method is executed just before moving the agent to another location. It is automatically called by the JADE framework. It disposes the GUI and prints a bye message on the standard output.

Overrides:

beforeMove in class jade.core.Agent

afterMove

protected void afterMove()

This method is executed as soon as the agent arrives to the new destination. It registers the communication prerequisites.

Overrides:

afterMove in class jade.core.Agent

afterLoad

public void afterLoad()

beforeFreeze

public void beforeFreeze()

afterThaw

public void afterThaw()

beforeReload

public void beforeReload()

afterReload

public void afterReload()

updateLocations

public void updateLocations(java.util.Iterator iLocationIterator)