controller

Class Agenda

java.lang.Object

controller.Agenda

public class Agenda
extends java.lang.Object

Class that represents an agenda like data structure. The agenda is made up of a list of pending goals (those goals that haven't been explored yet), a list of preempted goals (those goals that have been suspended due to a discrepancy) and a list of reached goals (those goals that have been completed). Also, it stores the current goal, which is the one that the agent is trying to achieve at the moment.

The lists of pending goals and preempted goals are sorted by priority. See PDDLSingleGoal to get more information.

Author:

Vladislav Nikolov Vasilev

Constructor Summary

Constructors

Constructor and Description
Agenda(java.util.LinkedList<PDDLSingleGoal> goals) Class constructor.

Method Summary

Modifier and Type	Method and Description
PDDLSingleGoal	containedPredicateInPendingGoals(java.lang.String predicate) Method that allows to check whether a predicate is contained in the pending goals list.
PDDLSingleGoal	containedPredicateInPreemptedGoals(java.lang.String predicate) Method that allows to check whether a predicate is contained in the preempted goals list.
PDDLSingleGoal	getCurrentGoal()
java.util.LinkedList<PDDLSingleGoal>	getPendingGoals()
java.util.LinkedList<PDDLSingleGoal>	getPreemptedGoals()
java.util.LinkedList<PDDLSingleGoal>	getReachedGoals()
void	haltCurrentGoal() Method that allows to halt the current goal in case some discrepancy is found.
boolean	setCurrentGoal() Method that sets the current goal.
void	setReachedFromPending(PDDLSingleGoal goal) Method that allows to move a goal instance from the pending goals list to the reached goals list.
void	setReachedFromPreempted(PDDLSingleGoal goal) Method that allows to move a goal instance from the preempted goals list to the reached goals list.
java.lang.String	toString()
void	updateReachedGoals() Method that allows to update the reached goals list.

Methods inherited from class java.lang.Object

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

Constructor Detail

Agenda

public Agenda(java.util.LinkedList<PDDLSingleGoal> goals)

Class constructor.

Parameters:

goals - List of goals

Method Detail

getPendingGoals

public java.util.LinkedList<PDDLSingleGoal> getPendingGoals()

getPreemptedGoals

public java.util.LinkedList<PDDLSingleGoal> getPreemptedGoals()

getReachedGoals

public java.util.LinkedList<PDDLSingleGoal> getReachedGoals()

getCurrentGoal

public PDDLSingleGoal getCurrentGoal()

setCurrentGoal

public boolean setCurrentGoal()

Method that sets the current goal. It chooses between the first goal of the pending goals list and the first one of the preempted goals list. The goal's priority is considered when choosing between them.

Returns:

Returns true if the goal has been set successfully or false otherwise.

haltCurrentGoal

public void haltCurrentGoal()

Method that allows to halt the current goal in case some discrepancy is found.

updateReachedGoals

public void updateReachedGoals()

Method that allows to update the reached goals list. It should be called when the current goal has been reached successfully.

containedPredicateInPendingGoals

public PDDLSingleGoal containedPredicateInPendingGoals(java.lang.String predicate)

Method that allows to check whether a predicate is contained in the pending goals list.

Parameters:

predicate - Predicate to be searched.

Returns:

Returns a PDDLSingleGoal instance containing the predicate if it is found and null otherwise.

containedPredicateInPreemptedGoals

public PDDLSingleGoal containedPredicateInPreemptedGoals(java.lang.String predicate)

Method that allows to check whether a predicate is contained in the preempted goals list.

Parameters:

predicate - Predicate to be searched.

Returns:

Returns a PDDLSingleGoal instance containing the predicate if it is found and null otherwise.

setReachedFromPending

public void setReachedFromPending(PDDLSingleGoal goal)

Method that allows to move a goal instance from the pending goals list to the reached goals list.

Parameters:

goal - PDDLSingleGoal instance to be moved.

setReachedFromPreempted

public void setReachedFromPreempted(PDDLSingleGoal goal)

Method that allows to move a goal instance from the preempted goals list to the reached goals list.

Parameters:

goal - PDDLSingleGoal instance to be moved.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object