Package jason.stdlib

Class belief

java.lang.Object

jason.asSemantics.DefaultInternalAction

jason.stdlib.belief

All Implemented Interfaces:

InternalAction, Serializable

public class belief
extends DefaultInternalAction

Internal action: .belief(Bel).

Description: gets beliefs in BB (excluding rules or inferred beliefs). Different from ordinary belief query that uses logical consequence to be verified, this internal action considers only the set of beliefs in the BB.

Parameters:

• +/- belief (literal): the belief to be searched.

See Also:

• asserta
• assertz
• relevant_rules
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
belief()

Method Summary

Modifier and Type	Method	Description
Object	execute(TransitionSystem ts, Unifier un, Term[] args)	Executes the internal action.
int	getMaxArgs()
int	getMinArgs()

Methods inherited from class jason.asSemantics.DefaultInternalAction

canBeUsedInContext, checkArguments, destroy, prepareArguments, suspendIntention

Methods inherited from class java.lang.Object

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

Constructor Details

belief

public belief()

Method Details

getMinArgs

public int getMinArgs()

Overrides:

getMinArgs in class DefaultInternalAction

getMaxArgs

public int getMaxArgs()

Overrides:

getMaxArgs in class DefaultInternalAction

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 DefaultInternalAction

Throws:

Exception