Package jason.stdlib

Class fail_goal

java.lang.Object

jason.asSemantics.DefaultInternalAction

jason.stdlib.succeed_goal

jason.stdlib.fail_goal

All Implemented Interfaces:

InternalAction, Serializable

@Manual(literal=".fail_goal(goal)",
        hint="aborts referred goals in the agent circumstance as if a plan for such goal had failed",
        argsHint="the goals which the achieving attempts will be aborted",
        argsType="literal",
        examples=".fail_goal(go(1,3)): aborts an attempt to achieve goals such as !go(1,3) as if a plan for it had failed, generating event -!go(1,3)",
        seeAlso={"jason.stdlib.intend","jason.stdlib.desire","jason.stdlib.drop_all_desires","jason.stdlib.drop_all_events","jason.stdlib.drop_all_intentions","jason.stdlib.drop_intention","jason.stdlib.drop_desire","jason.stdlib.succeed_goal","jason.stdlib.fail_goal","jason.stdlib.intention","jason.stdlib.resume","jason.stdlib.suspend","jason.stdlib.suspended"})
public class fail_goal
extends succeed_goal

Internal action: .fail_goal(G).

Description: aborts goals G in the agent circumstance as if a plan for such goal had failed. An event -!G is generated. A literal G is a goal if there is a triggering event +!G in any plan within any intention; also note that intentions can be suspended hence appearing in sets E, PA, or PI of the agent's circumstance as well.
The meta-event ^!G[state(failed)] is produced.

Parameters:

• - goal (literal): the goals to be aborted.

Example:

• .fail_goal(go(1,3)): aborts an attempt to achieve goals such as !go(1,3) as if a plan for it had failed, the generated event is -!go(1,3).

(Note: this internal action was introduced in a DALT 2006 paper, where it was called .dropGoal(G,false).)

See Also:

• intend
• desire
• drop_all_desires
• drop_all_events
• drop_all_intentions
• drop_intention
• drop_desire
• succeed_goal
• intention
• suspend
• suspended
• resume
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
fail_goal()

Method Summary

Modifier and Type	Method	Description
protected void	addAnnotsToFailEvent(Event failEvent)
int	dropIntention(Intention i, IMCondition c, TransitionSystem ts, Unifier un)
Object	execute(TransitionSystem ts, Unifier un, Term[] args)	Executes the internal action.

Methods inherited from class jason.stdlib.succeed_goal

checkArguments, drop, drop, getMaxArgs, getMinArgs

Methods inherited from class jason.asSemantics.DefaultInternalAction

canBeUsedInContext, destroy, prepareArguments, suspendIntention

Methods inherited from class java.lang.Object

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

Constructor Details

fail_goal

public fail_goal()

Method Details

execute

public Object execute(TransitionSystem ts,
 Unifier un,
 Term[] args)
               throws Exception

Description copied from interface: InternalAction

Executes the internal action. It should return a Boolean or an Iterator. A true boolean return means that the IA was successfully executed. An Iterator result means that there is more than one answer for this IA (e.g. see member internal action).

Specified by:

execute in interface InternalAction

Overrides:

execute in class succeed_goal

Throws:

Exception

dropIntention

public int dropIntention(Intention i,
 IMCondition c,
 TransitionSystem ts,
 Unifier un)
                  throws JasonException

Overrides:

dropIntention in class succeed_goal

Throws:

JasonException

addAnnotsToFailEvent

protected void addAnnotsToFailEvent(Event failEvent)