dk.deepthought.sidious.planner
Class PlannerEngine

java.lang.Object
  dk.deepthought.sidious.planner.PlannerEngine

All Implemented Interfaces:

Planner

public final class PlannerEngine
extends java.lang.Object
implements Planner

This class constitutes a Blackboard for the planner. Works as a liaison class between the GraphFactory and Pathfinder.

This class holds three SidiousQueue queues for calculating a plan:

1. extracting state and generating the graph
2. for processing the pathfinding
3. for plan generation

Author:

Deepthought

Field Summary

private SidiousQueue<Goal>	graphFactoryQueue Queue to facilitate generation of the graph.
private java.util.HashMap<SuperLinkID,Pathfinder>	idToPathfinder Mapping between id and pathfinder
private static Planner	INSTANCE private singleton instance.
private static org.apache.commons.logging.Log	logger Logger for this class.
private SidiousQueue<Graph>	pathfinderQueue Queue to facilitate the path finding.
private SidiousQueue<Graph>	planGeneratorQueue Queue to handle the generation of a plan from a searched graph.

Constructor Summary

private

PlannerEngine() Private constructor, to facilitate singleton.

Method Summary

private void	deliverPlan(Plan plan) Delivers the finished plan to the blackboard.
static java.util.Collection<Adjustable>	getAdjustables(SuperLinkID requester) Returns the adjustables of the specified requester.
static Planner	getInstance() Returns the singleton instance.
void	requestPlan(Goal goal) Requests this planner for a plan to the specified goal.
void	stop(SuperLinkID id) Stops generating a plan for the given id.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.apache.commons.logging.Log logger

Logger for this class.

idToPathfinder

private final java.util.HashMap<SuperLinkID,Pathfinder> idToPathfinder

Mapping between id and pathfinder

INSTANCE

private static final Planner INSTANCE

private singleton instance.

graphFactoryQueue

private SidiousQueue<Goal> graphFactoryQueue

Queue to facilitate generation of the graph.

pathfinderQueue

private SidiousQueue<Graph> pathfinderQueue

Queue to facilitate the path finding.

planGeneratorQueue

private SidiousQueue<Graph> planGeneratorQueue

Queue to handle the generation of a plan from a searched graph.

Constructor Detail

PlannerEngine

private PlannerEngine()

Private constructor, to facilitate singleton.

Method Detail

deliverPlan

private void deliverPlan(Plan plan)

Delivers the finished plan to the blackboard.

Parameters:

plan - the finished plan

getAdjustables

public static java.util.Collection<Adjustable> getAdjustables(SuperLinkID requester)

Returns the adjustables of the specified requester.

Parameters:

requester - the requester

Returns:

the adjustables of the requester

stop

public void stop(SuperLinkID id)

Description copied from interface: Planner

Stops generating a plan for the given id.

Specified by:

stop in interface Planner

Parameters:

id - the id

requestPlan

public void requestPlan(Goal goal)

Description copied from interface: Planner

Requests this planner for a plan to the specified goal.

Specified by:

requestPlan in interface Planner

Parameters:

goal - the goal to search with respect to

getInstance

public static Planner getInstance()

Returns the singleton instance.

Returns:

the singleton instance